Scroll compressor and refrigeration device

Abstract

A stationary oil groove (80) is provided on the opposing surface of the stationary scroll plate (60) opposite to the moving scroll plate (70). The stationary oil groove (80) has a stationary circumferential groove (81). The wide portion (84) is wider in the radial direction than the arc portion of the stationary circumferential groove (81). A moving oil groove (85) is provided on the opposing surface of the moving scroll plate (70) opposite to the stationary scroll plate (60). Within a defined range of the angular range in which the moving scroll plate (70) rotates, when viewed axially, a portion of the radial groove (87) of the moving oil groove (85) overlaps with the wide portion (84).

Description

Technical Field

[0001] This disclosure relates to a scroll compressor and a refrigeration device. Background Technology

[0002] Patent document 1 discloses a scroll compressor in which a stationary oil groove is formed at the end of the outer peripheral wall of the stationary scroll plate and a moving oil groove is formed on the end plate of the moving scroll plate.

[0003] In the scroll compressor of Patent Document 1, high-pressure lubricating oil is supplied to the stationary oil sump. The moving scroll rotates, thereby connecting the moving oil sump with the stationary oil sump, and the lubricating oil in the stationary oil sump is supplied to the moving oil sump. This lubricating oil is used for lubrication of the opposing surfaces (thrust surfaces) between the outer peripheral wall of the stationary scroll and the end plate of the moving scroll.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Publication No. 2012-202221 Summary of the Invention

[0007] -The technical problem the invention aims to solve-

[0008] In the scroll compressor of Patent Document 1, within a specific angular range when the moving scroll plate rotates, the moving side oil groove becomes disconnected from the stationary side oil groove, preventing the lubricating oil in the stationary side oil groove from being supplied to the moving side oil groove. Even in this state, oil continues to be supplied to the opposite side due to residual pressure, but to improve lubrication, it is desirable to further increase the amount of lubricating oil supplied to the opposite side.

[0009] The purpose of this disclosure is to increase the supply of lubricating oil to the opposing surfaces between the stationary and moving scroll plates.

[0010] - Technical solutions used to solve technical problems -

[0011] This disclosure relates to a scroll compressor comprising a stationary scroll 60 and a moving scroll 70. On the opposing surface of the stationary scroll 60 opposite the moving scroll 70, a stationary oil groove 80 is provided, having a stationary circumferential groove 81 extending circumferentially. The stationary circumferential groove 81 has a wide portion 84 that is radially wider than the groove width of the circumferentially extending arcuate portion. On the opposing surface of the moving scroll 70 opposite the stationary scroll 60, a moving oil groove 85 is provided, having a moving circumferential groove 86 extending circumferentially and a radial groove 87 extending radially and communicating with the moving circumferential groove 86. Within a defined range of the angular range in which the moving scroll 70 rotates, when viewed axially, a portion of the radial groove 87 overlaps with the wide portion 84.

[0012] In this disclosure, by conveying lubricating oil through the wide section 84, the angular range of communication between the stationary oil groove 80 and the moving oil groove 85 can be expanded, thereby increasing the amount of oil supplied to the opposing surfaces between the stationary scroll plate 60 and the moving scroll plate 70.

[0013] In this disclosure, the stationary circumferential groove 81 has a first arc portion 82 and a second arc portion 83, a first end of the first arc portion 82 on the side of the second arc portion 83 is connected to a second end of the second arc portion 83 on the side of the first arc portion 82, and the wide portion 84 is provided at the connection position between the first end of the first arc portion 82 and the second end of the second arc portion 83.

[0014] In this disclosure, a wide portion 84 is provided at the connection position between the first arc portion 82 and the second arc portion 83 to deliver lubricating oil, making it easy to distribute the lubricating oil to the stationary side oil groove 80 and the moving side oil groove 85.

[0015] In this disclosure, the first end of the first arc portion 82 and the second end of the second arc portion 83 are arranged radially and a portion thereof overlaps.

[0016] In this disclosure, the first arc portion 82 and the second arc portion 83 are radially offset and their ends are connected to each other, thereby enabling the formation of a wide portion 84 at the connection position.

[0017] In this disclosure, the wide portion 84 extends radially outward more than the arcuate portion of the stationary circumferential groove portion 81.

[0018] In this disclosure, the angular range of communication between the stationary side oil tank 80 and the moving side oil tank 85 can be expanded.

[0019] This disclosure relates to a scroll compressor comprising a stationary scroll 60 and a moving scroll 70. The stationary scroll 60 has a vortex-shaped stationary scroll 62 and an intake 64 opening near the winding end of the stationary scroll 62. The moving scroll 70 has a vortex-shaped moving scroll 72. On the opposing surface of the stationary scroll 60 opposite to the moving scroll 70, a circumferentially extending stationary oil groove 80 is provided. On the opposing surface of the moving scroll 70 opposite to the stationary scroll 60, a moving oil groove 85 is provided. The moving oil groove 85 has a circumferentially extending moving circumferential groove 86 and a radially extending radial groove 87 communicating with the moving circumferential groove 86. The end of the stationary oil groove 80 in the winding end direction of the stationary scroll 62 extends to a position closer to the intake 64 than the end of the moving circumferential groove 86 in the winding end direction of the moving scroll 72.

[0020] In this disclosure, the amount of lubricating oil supplied can be increased by supplying lubricating oil from both the stationary oil groove 80 and the moving oil groove 85 to the periphery of the end of the stationary oil groove 80 on the opposing surface between the stationary scroll plate 60 and the moving scroll plate 70.

[0021] In this disclosure, within a defined range of the angular range in which the moving scroll plate 70 rotates, when viewed from the axial direction, a portion of the moving side circumferential groove 86 overlaps with the stationary side oil groove 80.

[0022] In this disclosure, when the moving scroll plate 70 rotates, the moving side circumferential groove 86 of the moving side oil groove 85 overlaps with the stationary side oil groove 80, thereby enabling smooth delivery of lubricating oil from the stationary side oil groove 80 to the moving side oil groove 85.

[0023] This disclosure relates to a refrigeration apparatus including the scroll compressor 10 and a refrigerant circuit 1a for supplying refrigerant that has been compressed in the scroll compressor 10.

[0024] In this disclosure, a refrigeration apparatus including a scroll compressor 10 can be provided. Attached Figure Description

[0025] Figure 1 This is a refrigerant circuit diagram showing the configuration of the refrigeration device according to this embodiment;

[0026] Figure 2 This is a longitudinal sectional view showing the configuration of a scroll compressor;

[0027] Figure 3 This is a bottom view showing the structure of the stationary vortex disk;

[0028] Figure 4 This is a top view showing the structure of the moving scroll disk;

[0029] Figure 5 This is a diagram showing the positional relationship between the stationary side oil tank and the moving side oil tank in the first state;

[0030] Figure 6 This is a diagram showing the positional relationship between the stationary side oil tank and the moving side oil tank in the second state;

[0031] Figure 7 This is a diagram showing the positional relationship between the stationary side oil tank and the moving side oil tank in the third state;

[0032] Figure 8 This is a diagram showing the positional relationship between the stationary side oil tank and the moving side oil tank in the fourth state. Detailed Implementation

[0033] like Figure 1 As shown, a scroll compressor 10 is installed in a refrigeration unit 1. The refrigeration unit 1 has a refrigerant circuit 1a filled with refrigerant. The refrigerant circuit 1a includes the scroll compressor 10, a radiator 3, a pressure reducing mechanism 4, and an evaporator 5. The pressure reducing mechanism 4 is, for example, an expansion valve. The refrigerant circuit 1a performs a vapor compression refrigeration cycle.

[0034] Refrigeration unit 1 is an air conditioning unit. The air conditioning unit can also be a dedicated refrigeration unit, a dedicated heating unit, or an air conditioning unit that can switch between refrigeration and heating. In this case, the air conditioning unit has a switching mechanism (e.g., a four-way reversing valve) to switch the refrigerant circulation direction. Refrigeration unit 1 can also be a water heater, a chiller unit, a cooling device for cooling the air inside the storage area, etc. The cooling device cools the air inside the cold storage, freezer, container, etc.

[0035] like Figure 2 As shown, the scroll compressor 10 includes a housing 20, an electric motor 30, and a compression mechanism 40. The housing 20 is formed into a vertically elongated cylindrical shape and is configured as a closed dome. The electric motor 30 and the compression mechanism 40 are housed inside the housing 20.

[0036] The electric motor 30 has a stator 31 and a rotor 32. The stator 31 is fixed to the inner circumferential surface of the housing 20. The rotor 32 is arranged inside the stator 31. The drive shaft 11 passes through the rotor 32. The rotor 32 is fixed to the drive shaft 11.

[0037] At the bottom of the housing 20, there is an oil reservoir 21. The oil reservoir 21 stores lubricating oil. At the top of the housing 20, a suction pipe 12 is connected. At the body of the housing 20, a discharge pipe 13 is connected.

[0038] A cover 50 is fixed to the housing 20. The cover 50 is fixed inside the housing 20, for example, by a shrink fitting. The cover 50 is arranged above the motor 30. The compression mechanism 40 is arranged above the cover 50. The inlet end of the ejector pipe 13 is located between the motor 30 and the cover 50.

[0039] A recess 53 is formed on the cover portion 50. The recess 53 is formed by recessing a portion of the upper surface of the cover portion 50. An upper bearing 51 is provided on the lower side of the recess 53.

[0040] The drive shaft 11 extends vertically along the central axis of the housing 20. The drive shaft 11 has a main shaft portion 14 and an eccentric portion 15.

[0041] An eccentric portion 15 is provided at the upper end of the main shaft portion 14. The lower part of the main shaft portion 14 is supported by a lower bearing 22 and is rotatable. The lower bearing 22 is fixed to the inner circumferential surface of the housing 20. For example, a positive displacement pump 25 is provided on the lower bearing 22. The upper part of the main shaft portion 14 passes through the cover portion 50 and is supported by an upper bearing 51 of the cover portion 50 and is rotatable.

[0042] The compression mechanism 40 includes a stationary scroll plate 60 and a moving scroll plate 70. The stationary scroll plate 60 is fixed to the upper surface of the cover 50. The moving scroll plate 70 is arranged between the stationary scroll plate 60 and the cover 50.

[0043] The stationary vortex disk 60 has a stationary end plate 61, a stationary vortex 62, and an outer peripheral wall 63. The outer peripheral wall 63 is formed into an approximately cylindrical shape. The outer peripheral wall 63 is erected on the front side of the stationary end plate 61. Figure 2 On the outer edge of the lower surface of the middle.

[0044] The stationary volute 62 is formed in a vortex shape. The stationary volute 62 is erected on the stationary end plate 61 at a position inside the outer peripheral wall 63.

[0045] The stationary end plate 61 is located on the outer periphery and is continuously formed with the stationary scroll 62. The top surface of the stationary scroll 62 is substantially flush with the top surface of the outer peripheral wall 63. The stationary scroll disk 60 is fixed to the cover portion 50.

[0046] The moving scroll 70 has a moving side end plate 71, a moving side scroll 72, and a flange 73. The moving side scroll 72 is formed in a vortex shape. The moving side scroll 72 is formed on the upper surface of the moving side end plate 71. The moving side scroll 72 meshes with the stationary side scroll 62.

[0047] A flange portion 73 is formed at the center of the lower surface of the moving end plate 71. An eccentric portion 15 of the drive shaft 11 is inserted into the flange portion 73, and the drive shaft 11 is connected to the flange portion 73.

[0048] A cross-slider coupling 45 is provided on the upper part of the cover 50. The cross-slider coupling 45 prevents the movable scroll plate 70 from rotating. A key 46 is provided on the cross-slider coupling 45. The key 46 protrudes towards the lower surface of the movable side end plate 71 of the movable scroll plate 70. A keyway 47 is formed on the lower surface of the movable side end plate 71 of the movable scroll plate 70. The key 46 of the cross-slider coupling 45 is slidably engaged with the keyway 47.

[0049] It should be noted that a key is also provided on the side of the cover portion 50 of the cross slider coupling 45, and the key on the side of the cover portion 50 can be slidably engaged with the keyway (not shown) of the cover portion 50.

[0050] The compression mechanism 40 has a fluid chamber S for refrigerant to flow into. The fluid chamber S is formed between a stationary scroll 60 and a moving scroll 70. The moving scroll 70 is configured such that its moving-side scroll 72 meshes with the stationary scroll 62 of the stationary scroll 60. Here, the lower surface of the outer peripheral wall 63 of the stationary scroll 60 is the opposing surface to the moving scroll 70. The upper surface of the moving-side end plate 71 of the moving scroll 70 is the opposing surface to the stationary scroll 60.

[0051] An intake port 64 is formed on the outer peripheral wall 63 of the stationary vortex disk 60. The intake port 64 opens near the end of the winding of the stationary vortex 62. The intake port 64 is connected to the downstream end of the intake pipe 12.

[0052] An outlet 65 is formed at the center of the stationary end plate 61 of the stationary vortex disk 60. The outlet 65 is located on the upper surface of the stationary end plate 61 of the stationary vortex disk 60. The high-pressure gaseous refrigerant ejected from the outlet 65 flows out into the lower space 24 through a passage (not shown) formed in the shroud 50.

[0053] An oil supply passage 16 is formed inside the drive shaft 11. The oil supply passage 16 extends vertically from the lower end to the upper end of the drive shaft 11. The lower end of the drive shaft 11 is connected to a pump 25. The lower end of the pump 25 is immersed in an oil reservoir 21. As the drive shaft 11 rotates, the pump 25 draws lubricating oil from the oil reservoir 21 and delivers it to the oil supply passage 16. The oil supply passage 16 supplies the lubricating oil in the oil reservoir 21 to the sliding surfaces between the lower bearing 22 and the drive shaft 11, and between the upper bearing 51 and the drive shaft 11, and also to the sliding surface between the flange 73 and the drive shaft 11. The oil supply passage 16 opens at the upper end face of the drive shaft 11 and supplies lubricating oil to the upper part of the drive shaft 11.

[0054] The recess 53 of the cover 50 is connected to the oil supply passage 16 of the drive shaft 11 through the interior of the flange 73 of the moving scroll 70. By supplying high-pressure lubricating oil to the recess 53, the high pressure, equivalent to the ejection pressure of the compression mechanism 40, acts on the recess 53. The moving scroll 70 is squeezed onto the stationary scroll 60 by the high pressure of the recess 53 and the intermediate pressure of the intermediate pressure section 43 (described later).

[0055] An oil passage 55 is formed inside the cover 50 and the stationary scroll plate 60. The inflow end of the oil passage 55 communicates with the recess 53 of the cover 50. The outflow end of the oil passage 55 opens on the opposite surface of the stationary scroll plate 60. The oil passage 55 supplies high-pressure lubricating oil from the recess 53 to the opposite surface between the moving side end plate 71 of the moving scroll plate 70 and the outer peripheral wall 63 of the stationary scroll plate 60.

[0056] On the lower surface of the outer peripheral wall 63 of the stationary vortex disk 60, a primary side passage 48 is formed (see reference). Figure 5The inner end of the primary side passage 48 opens on the inner circumferential surface of the outer peripheral wall 63 and communicates with the fluid chamber S under medium pressure.

[0057] A secondary side passage 49 is formed on the outer periphery of the moving side end plate 71 of the moving scroll disk 70 (see reference). Figure 5 The secondary side passage 49 is formed by a through hole that penetrates the moving side end plate 71 in the vertical direction. The upper end of the secondary side passage 49 is intermittently connected to the outer end of the primary side passage 48, and its lower end is connected to the intermediate pressure section 43 between the moving scroll plate 70 and the cover 50. That is, intermediate pressure refrigerant is intermittently supplied from the fluid chamber S in the intermediate pressure state to the intermediate pressure section 43, so that the intermediate pressure section 43 reaches the specified intermediate pressure.

[0058] Composition of the stationary side oil tank and the moving side oil tank

[0059] like Figure 3 As shown, the opposite surface of the outer peripheral wall 63 of the stationary scroll 60 and the moving side end plate 71 of the moving scroll 70 is ( Figure 2 On the lower surface of the middle, a static side oil groove 80 is formed.

[0060] The stationary side oil groove 80 has a stationary side circumferential groove 81. The stationary side circumferential groove 81 extends circumferentially along the inner circumferential surface of the outer peripheral wall 63 of the stationary volute 60. The stationary side circumferential groove 81 is connected to the oil passage 55, and lubricating oil is supplied from the oil passage 55 to the stationary side circumferential groove 81.

[0061] The stationary circumferential groove 81 has a first arcuate portion 82, a second arcuate portion 83, and a wide portion 84. The first end of the first arcuate portion 82 on the side adjacent to the second arcuate portion 83 ( Figure 3 The middle part is the end in the clockwise direction) and the second end of the second arc portion 83 on the side of the first arc portion 82 ( Figure 3 The ends (in the counterclockwise direction) are arranged radially and partially overlap and connected. The wide portion 84 is provided at the connection position between the first end of the first arc portion 82 and the second end of the second arc portion 83. The wide portion 84 is formed to be wider in the radial direction than the grooves of the first arc portion 82 and the second arc portion 83.

[0062] like Figure 4 As shown, a moving-side oil groove 85 is provided on the opposing surface of the moving scroll 70, opposite to the stationary scroll 60. The moving-side oil groove 85 has a moving-side circumferential groove 86 and a radial groove 87. The moving-side circumferential groove 86 extends circumferentially along the outer circumferential surface of the moving-side scroll 72. The radial groove 87 extends radially and connects with one end of the moving-side circumferential groove 86. Figure 4 The clockwise end is connected.

[0063] The radial groove 87 extends from one end of the moving side circumferential groove 86 toward the center of the moving scroll plate 70. That is, the radial groove 87 extends radially inward on the moving side end plate 71 of the moving scroll plate 70, and its inner end can communicate with the fluid chamber S.

[0064] like Figure 5 As shown, within a defined range of the angular range in which the moving scroll 70 rotates, when viewed from the axial side, a portion of the radial groove 87 overlaps with the wide portion 84. The end of the stationary oil groove 80 in the winding end direction of the stationary scroll 62 is located closer to the suction port 64 than the end of the moving circumferential groove 86 of the moving oil groove 85 in the winding end direction of the moving scroll 72.

[0065] This allows for a longer length of the stationary oil groove 80, which is always connected to the oil passage 55, thereby increasing the range of lubricant supply. As a result, the high-pressure area on the opposing surfaces of the stationary scroll plate 60 and the moving scroll plate 70 can be increased, thus enabling a sufficient oil film to be formed between the stationary scroll plate 60 and the moving scroll plate 70.

[0066] -Operating Mode-

[0067] The basic operating mode of the scroll compressor 10 is explained below. Figure 2 When the motor 30 is turned on, the drive shaft 11, on which the rotor 32 is fixed, will be driven to rotate. In addition, the moving scroll plate 70 is prevented from rotating by the cross slider coupling 45, so it rotates around the axis of the drive shaft 11.

[0068] When the rotating scroll 70 rotates, the refrigerant is compressed in the fluid chamber S. The high-pressure gaseous refrigerant compressed in the fluid chamber S is ejected from the nozzle 65 and flows into the lower space 24 through a passage (not shown) formed in the shroud 50. The high-pressure gaseous refrigerant in the lower space 24 is then ejected to the outside of the housing 20 through the ejector pipe 13.

[0069] As the drive shaft 11 rotates, the high-pressure lubricating oil in the oil reservoir 21 is drawn up by the pump 25 and flows upward in the oil supply passage 16 of the drive shaft 11, and flows from the opening at the upper end of the eccentric part 15 of the drive shaft 11 into the interior of the flange part 73 of the moving scroll 70.

[0070] The lubricating oil supplied to the flange portion 73 flows through the gap between the eccentric portion 15 of the drive shaft 11 and the flange portion 73 to the recess 53 of the cover portion 50. In this way, the recess 53 of the cover portion 50 reaches a high pressure equivalent to the ejection pressure of the compression mechanism 40. The moving scroll plate 70 is squeezed onto the stationary scroll plate 60 due to the high pressure of the recess 53 and the intermediate pressure of the intermediate pressure portion 43.

[0071] The high-pressure lubricating oil accumulated in the recess 53 flows through the oil passage 55 to the stationary side oil groove 80. In this way, high-pressure lubricating oil equivalent to the ejection pressure of the compression mechanism 40 is supplied to the stationary side oil groove 80.

[0072] In the compression mechanism 40, the high-pressure lubricating oil in the static side oil sump 80 is switched between four states when it is supplied to a designated part. That is, in the compression mechanism 40, during the rotation of the moving scroll plate 70, it switches to each state sequentially, such as the first state, the second state, the third state, the fourth state, the first state, the second state, and so on.

[0073] <First State>

[0074] For example, the moving scroll disk 70 reaches Figure 5 After the eccentric angle position, it changes to the first state. In the first state, the wide portion 84 of the stationary oil groove 80 is connected to one end (the radially inner end) of the radial groove portion 87 of the moving oil groove 85. Furthermore, in the first state, the end of the stationary circumferential groove portion 81 of the stationary oil groove 80 and the end of the moving circumferential groove portion 86 of the moving oil groove 85 ( Figure 5 The ends (in the clockwise direction) overlap and connect.

[0075] In this way, the high-pressure lubricating oil flowing in the stationary side oil groove 80 flows into the moving side oil groove 85 from the ends of the radial groove 87 and the moving side circumferential groove 86. As a result, the moving side oil groove 85, including the radial groove 87 and the moving side circumferential groove 86, is filled with high-pressure lubricating oil. In the first state, the moving side oil groove 85 is isolated from the fluid chamber S. Therefore, the high-pressure lubricating oil in the moving side oil groove 85 is used to lubricate its surrounding opposing surfaces.

[0076] <Second State>

[0077] When located Figure 5 The eccentrically positioned vortex disk 70 further rotates, for example, reaching... Figure 6 When the eccentric angle position is reached, it changes to the second state. In the second state, the wide portion 84 of the stationary oil groove 80 communicates with the radial groove portion 87 of the moving oil groove 85. Furthermore, the stationary circumferential groove portion 81 of the stationary oil groove 80 overlaps and communicates with the moving circumferential groove portion 86 of the moving oil groove 85. In this way, lubricating oil can be smoothly delivered from the stationary oil groove 80 to the moving oil groove 85. Moreover, in the second state, one end of the radial groove portion 87 of the moving oil groove 85 is also simultaneously communicated with the fluid chamber S.

[0078] In the second state, the moving side oil groove 85 is connected to both the fluid chamber S and the stationary side oil groove 80. In this way, in the second state, the stationary side oil groove 80 is connected to the fluid chamber S through the radial groove 87, and the high-pressure lubricating oil flowing in the moving side oil groove 85 and the stationary side oil groove 80 can be adequately supplied to the fluid chamber S.

[0079] Furthermore, because the radial groove 87 of the moving side oil groove 85 is connected to the fluid chamber S connected to the suction port 64, the pressure difference between the lubricating oil in the moving side oil groove 85 and the stationary side oil groove 80 and the pressure of the refrigerant in the fluid chamber S is large, which can supply sufficient lubricating oil to the fluid chamber S.

[0080] <Third State>

[0081] When located Figure 6 The eccentrically positioned vortex disk 70 further rotates, for example, reaching... Figure 7 When the eccentric angle position is reached, it changes to the third state. In the third state, the radial groove 87 of the moving side oil groove 85 is separated from the fluid chamber S. However, in the third state, after the second state, the moving side oil groove 85 and the stationary side oil groove 80 continue to be connected.

[0082] In this way, if the moving side oil groove 85 and the stationary side oil groove 80 remain in communication, high pressure will be maintained in the moving side oil groove 85. Therefore, even in the third state, the lubricating oil in the moving side oil groove 85 can be supplied to the surrounding opposite surface.

[0083] In this way, by supplying lubricating oil from both the stationary oil groove 80 and the moving oil groove 85 to the periphery of the end of the stationary oil groove 80 on the opposite surface between the stationary scroll plate 60 and the moving scroll plate 70, the amount of lubricating oil supplied can be increased.

[0084] <Fourth State>

[0085] When located Figure 7 The eccentrically positioned vortex disk 70 further rotates, for example, reaching... Figure 8 When the eccentric angle position is reached, it changes to the fourth state. In the fourth state, the moving side oil groove 85 is isolated from the fluid chamber S and the stationary side oil groove 80. This interrupts the supply of high-pressure lubricating oil from the stationary side oil groove 80 to the moving side oil groove 85.

[0086] In other words, during the 360° rotation of the moving scroll plate 70 in the compression mechanism 40, the supply of lubricating oil from the stationary side oil tank 80 to the fluid chamber S is intermittently interrupted. This prevents the continuous excessive supply of lubricating oil from the stationary side oil tank 80 to the fluid chamber S.

[0087] After the fourth state, it switches back to the first state, and then switches to the second, third and fourth states in sequence.

[0088] -Effects of the implementation method-

[0089] According to the features of this embodiment, the stationary oil groove 80 is provided on the opposing surface of the stationary scroll plate 60 opposite to the moving scroll plate 70. The stationary oil groove 80 has a stationary circumferential groove portion 81. The wide portion 84 is wider in the radial direction than the groove width of the arc portion of the stationary circumferential groove portion 81. The moving oil groove 85 is provided on the opposing surface of the moving scroll plate 70 opposite to the stationary scroll plate 60. Within a predetermined range of the angle range in which the moving scroll plate 70 rotates, when viewed from the axial direction, a portion of the radial groove portion 87 of the moving oil groove 85 overlaps with the wide portion 84.

[0090] In this way, by supplying lubricating oil through the wide section 84, the angular range of communication between the stationary oil groove 80 and the moving oil groove 85 can be expanded, thereby increasing the amount of oil supplied to the opposing surfaces between the stationary scroll plate 60 and the moving scroll plate 70.

[0091] Within a specified angular range during the rotation of the moving scroll plate 70, the stationary oil groove 80 begins to connect with the moving oil groove 85. Here, either the moving circumferential groove 86 or the radial groove 87 of the moving oil groove 85 may also initially connect with the stationary oil groove 80.

[0092] According to the features of this embodiment, a wide portion 84 is provided at the connection position between the first arc portion 82 and the second arc portion 83 to deliver lubricating oil, thereby making it easy to distribute the lubricating oil to the stationary side oil groove 80 and the moving side oil groove 85.

[0093] According to the features of this embodiment, the first arc portion 82 and the second arc portion 83 are radially offset and their ends are connected to each other, thereby enabling the formation of a wide portion 84 at the connection position.

[0094] According to the features of this embodiment, the angular range of communication between the stationary side oil tank 80 and the moving side oil tank 85 can be expanded.

[0095] According to the features of this embodiment, the stationary oil groove 80 is provided on the opposing surface of the stationary scroll 60 opposite to the moving scroll 70. The moving oil groove 85 is provided on the opposing surface of the moving scroll 70 opposite to the stationary scroll 60. The end of the stationary oil groove 80 in the winding end direction of the stationary scroll 62 extends to a position closer to the suction port 64 than the end of the moving circumferential groove portion 86 of the moving oil groove 85 in the winding end direction of the moving scroll 72.

[0096] Within a specified angular range during the rotation of the moving scroll plate 70, the stationary oil groove 80 begins to connect with the moving oil groove 85. Here, either the moving circumferential groove 86 or the radial groove 87 of the moving oil groove 85 may also initially connect with the stationary oil groove 80.

[0097] In this way, by supplying lubricating oil from both the stationary oil groove 80 and the moving oil groove 85 to the periphery of the end of the stationary oil groove 80 on the opposite surface between the stationary scroll plate 60 and the moving scroll plate 70, the amount of lubricating oil supplied can be increased.

[0098] According to the features of this embodiment, when the moving scroll plate 70 rotates, the moving side circumferential groove 86 of the moving side oil groove 85 overlaps with the stationary side oil groove 80, thereby enabling smooth delivery of lubricating oil from the stationary side oil groove 80 to the moving side oil groove 85.

[0099] According to the features of this embodiment, it includes a scroll compressor 10 and a refrigerant circuit 1a for supplying refrigerant that has been compressed in the scroll compressor 10. Thus, a refrigeration apparatus including a scroll compressor 10 can be provided.

[0100] (Other implementation methods)

[0101] The implementation method may also adopt the following configuration.

[0102] In this embodiment, the first end of the first arc portion 82 of the stationary side circumferential groove portion 81 and the second end of the second arc portion 83 are arranged radially side by side and partially overlapped and connected, thereby providing a wide portion 84 at the connection position between the first arc portion 82 and the second arc portion 83, but it is not limited to this method.

[0103] For example, a wide portion 84 can be provided midway along an arc extending circumferentially. Furthermore, in this case, the wide portion 84 can be made wider radially outward than the arc of the stationary circumferential groove 81. This expands the angular range of communication between the radial groove 87 of the moving side oil groove 85 and the wide portion 84.

[0104] The embodiments and variations have been described above; however, it should be understood that various changes can be made to the manner and specific details without departing from the spirit and scope of the claims. The embodiments and variations described above can also be appropriately combined or substituted, provided that the function of the object of this disclosure is not affected. The terms "first," "second," "third," etc., in the specification and claims are used to distinguish statements containing these terms and do not limit the number or order of such statements.

[0105] -Industry Applicability-

[0106] In summary, this disclosure is very useful for scroll compressors.

[0107] - Symbol Explanation -

[0108] 1. Refrigeration unit

[0109] 1a Refrigerant circuit

[0110] 10. Scroll compressor

[0111] 60 Static Vortex Disk

[0112] 62 Static Side Scroll

[0113] 64 suction port

[0114] 70 Moving Scroll Disk

[0115] 72 Moving Side Scroll

[0116] 80 Static side oil tank

[0117] 81. Static side circumferential groove

[0118] 82 First arc section

[0119] 83 Second arc section

[0120] 84 Wide section

[0121] 85. Moving side oil tank

[0122] 86. Moving side circumferential groove

[0123] 87 Radial groove

Claims

1. A scroll compressor comprising a stationary scroll plate (60) and a moving scroll plate (70), characterized in that: On the opposing surface of the stationary scroll plate (60) opposite to the moving scroll plate (70), a stationary oil groove (80) is provided, having a stationary circumferential groove (81) extending in the circumferential direction. The stationary circumferential groove (81) has a wide portion (84) that is wider in the radial direction than the groove width of the arc portion extending circumferentially. On the opposing surface of the moving scroll plate (70) opposite to the stationary scroll plate (60), there is a moving side oil groove (85). The moving side oil groove (85) has a moving side circumferential groove (86) extending in the circumferential direction and a radial groove (87) extending in the radial direction and communicating with the moving side circumferential groove (86). Within a defined range of the angular range in which the moving scroll plate (70) rotates, when viewed axially, a portion of the radial groove (87) overlaps with the wide portion (84). The stationary circumferential groove (81) has a first arc portion (82) and a second arc portion (83). The first end of the first arc portion (82) on the side of the second arc portion (83) is connected to the second end of the second arc portion (83) on the side of the first arc portion (82). The wide portion (84) is located at the connection position between the first end of the first arc portion (82) and the second end of the second arc portion (83).

2. The scroll compressor according to claim 1, characterized in that: The first end of the first arc portion (82) and the second end of the second arc portion (83) are arranged radially and a portion of them overlap.

3. The scroll compressor according to claim 1 or 2, characterized in that: The wide portion (84) extends radially outward more than the arc portion of the stationary circumferential groove (81).

4. The scroll compressor according to any one of claims 1 to 3, characterized in that: The stationary vortex disk (60) has a vortex-shaped stationary vortex (62) and the inlet (64) opens near the end of the winding of the stationary vortex (62). The moving vortex disk (70) has a vortex-shaped moving side vortex (72). The end of the stationary side oil groove (80) in the winding end direction of the stationary side volute (62) extends closer to the suction port (64) than the end of the moving side circumferential groove (86) in the winding end direction of the moving side volute (72).

5. The scroll compressor according to claim 4, characterized in that: Within a specified range of the angular range in which the moving scroll plate (70) rotates, when viewed from the axial direction, a portion of the moving side circumferential groove (86) overlaps with the stationary side oil groove (80).

6. A refrigeration device, characterized in that: The refrigeration device includes a scroll compressor (10) as described in any one of claims 1 to 5, and a refrigerant circuit (1a) for the flow of refrigerant that has been compressed in the scroll compressor (10).

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