Scroll compressor and refrigeration equipment having the same

Abstract

The present invention belongs to the technical field of compressors, and in particular relates to a scroll compressor and a refrigeration device having the same. The scroll compressor includes: a housing; a fixed scroll, which is fixedly connected to the housing and is provided with a first contact surface and a first scroll sheet; an orbiting scroll, which is movably connected to the housing and is provided with a second contact surface and a second scroll sheet, the second scroll sheet and the first scroll sheet engage with each other to form a compression chamber, and the second contact surface contacts the first contact surface; an oil groove is provided on the first contact surface, the oil groove surrounds the first scroll sheet, the oil groove includes a continuous oil supply area, and an oil supply hole is provided on the second contact surface, the oil supply hole and the continuous oil supply area are connected within a predetermined time range in a movement cycle of the orbiting scroll relative to the stationary scroll. The application of this technical solution solves the problem that the contact surface between the orbiting scroll and the stationary scroll of the existing scroll compressor is prone to abnormal wear.

Description

Technical Field

[0001] The present invention belongs to the technical field of compressors, and in particular relates to a scroll compressor and a refrigeration device having the same. Background Art

[0002] Scroll compressors are high-tech products requiring extremely high precision in design, processing, and assembly. Due to their high volumetric efficiency, compact size, low vibration, and low noise, they are increasingly used in HVAC, refrigeration, heat pumps, and automotive applications.

[0003] A scroll compressor is primarily composed of a stationary scroll, an orbiting scroll, a cross ring, a crankshaft, and a housing. The scroll blades of the orbiting and stationary scrolls are installed at 180° relative to each other, and a certain eccentricity is designed between the orbiting and stationary scrolls, thus forming a compression chamber. During the operation of the compressor, the scroll blades of the two opposing scrolls divide the chamber into multiple pairs of crescent-shaped chambers. When the orbiting scroll rotates linearly with the crankshaft (the orbiting scroll does not rotate on its own), the volume of the crescent-shaped chambers gradually decreases, completing the suction, compression, and exhaust. Since both scrolls are made of metal, sufficient lubrication is required between the orbiting and stationary scrolls to ensure the reliability of the compressor operation. The oil supply method of a scroll compressor mostly adopts a coupling method of centrifugal and pressure difference. An oil supply hole is set on the orbiting scroll, and an oil groove is set on the stationary scroll. The oil groove on the existing stationary scroll is set as a number of arc-shaped grooves with equal spacing. During the operation of the orbiting scroll, the oil supply hole and the oil groove are periodically connected. This oil supply method will change with the changes in speed and working conditions. At high speeds or in some harsh working conditions, it is easy to cause insufficient oil supply between the moving and static scrolls of the scroll compressor, resulting in abnormal wear of the contact surface between the moving and static scrolls. Summary of the Invention

[0004] The object of the present invention is to provide a scroll compressor and a refrigeration device having the same, aiming to solve the problem that the contact surface between the orbiting scroll and the fixed scroll of the existing scroll compressor is prone to abnormal wear.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a scroll compressor, comprising: a shell, the shell is provided with an installation inner cavity; a static scroll plate, the static scroll plate is fixedly connected to the installation inner cavity, the static scroll plate is provided with a first contact surface and a first scroll sheet connected to the first contact surface; a movable scroll plate, the movable scroll plate is movably connected to the installation inner cavity, the movable scroll plate is provided with a second contact surface and a second scroll sheet connected to the second contact surface, the second scroll sheet and the first scroll sheet are engaged with each other to form a compression chamber, and the edge area of ​​the second contact surface is in contact with the edge area of ​​the first contact surface; an oil groove is provided on the first contact surface, the oil groove surrounds the first scroll sheet, the oil groove includes a continuous oil supply area, an oil supply hole is provided on the second contact surface, and the oil supply hole and the continuous oil supply area are connected within a predetermined time range in a movement cycle of the movable scroll plate relative to the static scroll plate.

[0006] Optionally, the continuous oil supply area is close to the air inlet of the compression chamber.

[0007] Optionally, the oil groove is fan-shaped and surrounds the first scroll sheet.

[0008] Optionally, the oil groove is arranged to surround the first scroll sheet, and two groove ends of the oil groove are staggered and not connected.

[0009] Optionally, the continuous oil supply area is provided at one end of the oil tank.

[0010] Optionally, the width of the oil groove is gradually widened in a direction from the continuous oil supply area to the other end of the oil groove.

[0011] Optionally, the continuous oil supply area is provided between the two ends of the oil tank.

[0012] Optionally, the width of the oil groove is gradually widened in the direction from the continuous oil supply area to one end of the oil groove; and the width of the oil groove is also gradually widened in the direction from the continuous oil supply area to the other end of the oil groove.

[0013] Optionally, the contour shape of the continuous oil supply area is any one of an arc, a broken line, an L-shape, a triangle, a rectangle, a circle, an ellipse, a regular polygon and a ring.

[0014] According to another aspect of the present invention, a refrigeration device is provided, specifically comprising the scroll compressor as described above.

[0015] The present invention has at least the following beneficial effects:

[0016] The scroll compressor provided by the present invention is used to compress refrigerant. Since the oil groove on the first contact surface is provided with a continuous oil supply area, and within a predetermined time range in a cycle of rotation of the movable scroll relative to the stationary scroll plane, the oil supply hole is continuously connected to the continuous oil supply area, so that sufficient oil can flow from the oil supply hole into the continuous oil supply area, and then the oil flows along the oil groove. Under the driving effect of the movement of the movable scroll relative to the stationary scroll, sufficient oil will always be evenly distributed between the first contact surface and the second contact surface, thereby improving the lubrication condition between the first contact surface and the second contact surface, and can ensure effective lubrication even under harsh working conditions, prevent abnormal wear, and ensure the normal operation of the scroll compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 is a cross-sectional view of a scroll compressor according to a first embodiment of the present invention;

[0019] Figure 2 Schematic diagram of the structure of the movable scroll of the scroll compressor according to the first embodiment of the present invention;

[0020] Figure 3 Schematic diagram of the structure of the fixed scroll of the scroll compressor according to the first embodiment of the present invention;

[0021] Figure 4 Schematic diagram of the structure of the fixed scroll of the scroll compressor according to the first embodiment of the present invention, showing the motion trajectory of the oil supply hole during the translation of the orbiting scroll relative to the fixed scroll;

[0022] Figure 4-1 for Figure 4 Enlarged view of point A in the middle;

[0023] Figure 5 Schematic diagram of the structure of the fixed scroll of the scroll compressor according to the second embodiment of the present invention;

[0024] Figure 6 Schematic diagram of the structure of the fixed scroll of the scroll compressor according to the third embodiment of the present invention, showing the motion trajectory of the oil supply hole during the translation of the orbiting scroll relative to the fixed scroll;

[0025] Figure 6-1 for Figure 6 Enlarged view of point B in the middle;

[0026] Figure 7 Schematic diagram of the structure of the fixed scroll of the scroll compressor according to the fourth embodiment of the present invention, showing the motion trajectory of the oil supply hole during the translation of the orbiting scroll relative to the fixed scroll;

[0027] Figure 7-1 for Figure 7 Enlarged view of point C in the middle;

[0028] Figure 8 This is a schematic structural diagram of the fixed scroll of the scroll compressor according to the fifth embodiment of the present invention.

[0029] Among them, the reference numerals in the figures are:

[0030] 10. Housing; 11. Mounting inner cavity; 20. Stationary scroll; 21. First contact surface; 22. First scroll plate; 23. Oil groove; 231. Continuous oil supply area; 30. Orbital scroll; 31. Second contact surface; 32. Second scroll plate; 33. Oil supply hole; 34. Orbital disk oil channel; 35. Motion trajectory; 42. Oil storage space; 43. Crankshaft; 44. Crankshaft oil channel; 45. Oiling plate; 46. Immersed end; 50. Motor. DETAILED DESCRIPTION

[0031] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0033] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified with "first," "second," etc., may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0034] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0035] Example 1:

[0036] like Figures 1 to 4 As shown, the scroll compressor of the first embodiment of the present invention includes a housing 10, a fixed scroll 20 and a movable scroll 30. The housing 10 is provided with an installation cavity 11. The fixed scroll 20 is fixedly connected to the housing 10 and is located in the installation cavity 11. The fixed scroll 20 is provided with a first contact surface 21 and a first scroll plate 22. The first scroll plate 22 is vertically formed on the first contact surface 21. The movable scroll 30 is movably connected to the housing 10 and is located in the installation cavity 11. The movable scroll 30 is provided with a second contact surface 31 and a second scroll plate 32. The second scroll plate 32 is vertically formed on the second contact surface 31. The second scroll plate 32 and the first scroll plate 22 are engaged with each other to form a compression chamber, and the edge area of ​​the second contact surface 31 is in contact with the edge area of ​​the first contact surface 21. Figure 1 As shown, the mounting inner cavity 11 of the housing 10 is also equipped with a motor 50 and a crankshaft 43, and the motor 50 drives the crankshaft 43 to rotate, wherein the crankshaft 43 has an eccentric end, and the eccentric end is connected to the movable scroll 30. The motor 50 drives the crankshaft 43 to rotate, and the eccentric end drives the movable scroll 30 to rotate in a fixed plane relative to the fixed scroll 20, and the multiple pairs of crescent-shaped compression chambers formed by the first scroll sheet 22 and the second scroll sheet 32 ​​realize the working process of suction, compression and exhaust.

[0037] During the movement of the orbiting scroll 30 relative to the fixed scroll 20, the first contact surface 21 and the second contact surface 31 contact each other and there is friction. Therefore, lubrication is required between the first contact surface 21 and the second contact surface 31 to prevent dry friction wear between the first contact surface 21 and the second contact surface 31, especially to prevent abnormal wear caused by insufficient oil supply between the orbiting scroll 30 and the fixed scroll 20 under some harsh working conditions. Therefore, an oil groove 23 is provided on the first contact surface 21, and the oil groove 23 surrounds the first scroll sheet 22. The oil groove 23 includes a continuous oil supply area 231. An oil supply hole 33 is provided on the second contact surface 31. The oil supply hole 33 and the continuous oil supply area 231 are connected within a predetermined time range in a movement cycle of the orbiting scroll 30 relative to the fixed scroll 20, such as Figure 4-1As shown, it is ensured that there is enough oil in the oil groove 23 to lubricate the first contact surface 21 and the second contact surface 31.

[0038] A crankshaft oil passage 44 is provided in the crankshaft 43. Figure 1 and Figure 2 As shown, the crankshaft oil passage 44 is connected to the movable plate oil passage 34 opened in the movable scroll 30, and an oiling plate 45 is installed at the lower end of the crankshaft 43. The immersed end 46 of the oiling plate 45 extends into the oil in the oil storage space 42 at the bottom of the shell 10. When the motor 50 is started, under the action of the centrifugal suction of the oiling plate 45 and the pressure difference generated by the upper and lower ends of the crankshaft 43, the oil flows along the oiling plate 45, the crankshaft oil passage 44 and the movable plate oil passage 34 to reach the oil supply hole 33. Since the oil supply hole 33 is continuously connected to the continuous oil supply area 231 within a predetermined time range during a cycle of the movable scroll 30 rotating relative to the fixed scroll 20, as shown in FIG. Figure 4-1 As shown, sufficient oil can flow from the oil supply hole 33 into the continuous oil supply area 231, and then the oil flows along the oil groove 23. Driven by the movement of the orbiting scroll 30 relative to the fixed scroll 20, sufficient oil will always be evenly distributed between the first contact surface 21 and the second contact surface 31, thereby improving the lubrication condition between the first contact surface 21 and the second contact surface 31. Even under harsh working conditions, effective lubrication can be guaranteed at all times to prevent abnormal wear and ensure the normal operation of the scroll compressor.

[0039] like Figure 3 and Figure 4 As shown, the oil groove 23 is fan-shaped and surrounds the first scroll plate 22. In other words, the two ends of the oil groove 23 are not connected. Furthermore, generally, the distance between the two ends of the oil groove 23 corresponds to the low-pressure intake area of ​​the fixed scroll 20. Although there is no oil groove 23 to supply oil to this low-pressure area, the high-speed movement of the orbiting scroll 30 relative to the fixed scroll 20 allows oil to penetrate this low-pressure area and lubricate the first contact surface 21 and the second contact surface 31. This ensures that all locations between the first contact surface 21 and the second contact surface 31 are always lubricated with oil, ensuring effective lubrication even under harsh operating conditions and preventing abnormal wear.

[0040] In the first embodiment, the continuous oil supply area 231 is disposed at one end of the oil groove 23. That is, the continuous oil supply area 231 is also located within the low-pressure area of ​​the intake air near the compression chamber (i.e., the continuous oil supply area 231 is close to the intake air of the compression chamber). This ensures that the pressure difference between the upper and lower ends of the crankshaft oil passage 44 is substantially stable, thereby ensuring that the oil can rise along the crankshaft oil passage 44, enter the orbiting plate oil passage 34, and be transported from the oil supply hole 33 to the continuous oil supply area 231. The oil then flows along the oil groove 23 to the other end, and during the relative motion of the orbiting scroll 30 and the fixed scroll 20, the oil seeps into various locations on the first contact surface 21 and the second contact surface 31 for lubrication.

[0041] In order to reduce the flow resistance of the oil flowing in the oil groove 23, thereby ensuring that the oil can flow along the oil groove 23 to the entire oil groove 23, and ensuring that the first contact surface 21 and the second contact surface 31 can be effectively lubricated under any working conditions within the operating range of the scroll compressor, therefore, Figure 3 As shown, the width of the oil groove 23 gradually widens from the continuous oil supply area 231 to the other end of the oil groove 23, that is, δ3>δ2>δ1. Thus, after the oil enters the continuous oil supply area 231 from the oil supply hole 33, the oil flows from the continuous oil supply area 231 to the other end of the oil groove 23. As the width of the oil groove 23 gradually increases, the flow resistance of the oil is reduced, ensuring that the oil can always flow and fill the entire oil groove 23 under all operating conditions, thereby effectively lubricating the first contact surface 21 and the second contact surface 31.

[0042] In the first embodiment, the outline of the continuous oil supply area 231 is semicircular, such as Figure 4-1 As shown, during the process of the crankshaft 43 driving the movable scroll 30 to rotate in a plane relative to the fixed scroll 20, nearly half of the movement trajectory 35 of the oil supply hole 33 overlaps with the continuous oil supply area 231. Therefore, during the movement time of this overlapping trajectory, the oil supply hole 33 is continuously connected to the continuous oil supply area 231, and the oil is continuously input into the continuous oil supply area 231. Compared with the existing scroll compressor, the scroll compressor provided in this embodiment extends the oil supply time and increases the oil supply amount, thereby improving the stable operation of the scroll compressor under various working conditions within the operating range, thereby improving the operating reliability of the scroll compressor.

[0043] In some other feasible embodiments, the contour shape of the continuous oil supply area 231 is any one of an arc, a broken line, an L-shape, a triangle, a rectangle, an ellipse, and a regular polygon. It is only necessary to ensure that the oil supply hole 33 and the continuous oil supply area 231 can be continuously connected within a predetermined time range in a movement cycle of the movable scroll 30 relative to the fixed scroll 20 to provide continuous oil supply. This is sufficient, and therefore no limitation is made here.

[0044] Example 2:

[0045] The scroll compressor provided in the second embodiment has the following differences compared to the scroll compressor provided in the first embodiment:

[0046] like Figure 5 As shown, the oil groove 23 is arranged to surround the first scroll plate 22, and the two ends of the oil groove 23 are staggered and not connected. In the second embodiment, corresponding positions of the oil groove 23 are located between the edge areas of the first contact surface 21 and the edge areas of the second contact surface 31 (that is, oil can flow into the oil grooves 23 corresponding to these positions). During the process of oil flowing from the continuous oil supply area 231 to each position of the oil groove 23, the orbiting scroll 30 rotates in a plane relative to the fixed scroll 20 as the crankshaft 43 rotates. The oil is driven to penetrate between the first contact surface 21 and the second contact surface 31 to lubricate the first contact surface 21 and the second contact surface 31.

[0047] The scroll compressor provided in the second embodiment is compared with the scroll compressor provided in the first embodiment. Except for the above-mentioned structural differences, the remaining structures are the same, and thus will not be described in detail here.

[0048] Example 3:

[0049] The scroll compressor provided in the third embodiment has the following differences compared with the scroll compressors provided in the first and second embodiments.

[0050] like Figure 6 and Figure 6-1 As shown in FIG, the contour of the continuous oil supply area 231 is annular. Moreover, during the plane rotation of the orbiting scroll 30 relative to the fixed scroll 20, the motion trajectory 35 of the oil supply hole 33 completely overlaps with the annular continuous oil supply area 231, as shown in FIG. Figure 6-1 That is, during the planar rotation of the orbiting scroll 30 relative to the fixed scroll 20, the oil supply hole 33 is always connected to the continuous oil supply area 231. That is, the oil supply hole 33 always works toward the continuous oil supply area 231, ensuring sufficient oil delivery to the oil groove 23 and lubricating the first contact surface 21 and the second contact surface 31.

[0051] The scroll compressor provided in the third embodiment is compared with the scroll compressor provided in the first and second embodiments. Except for the above-mentioned structural differences, the remaining structures are the same, and thus will not be described in detail here.

[0052] Example 4:

[0053] The scroll compressor provided in the fourth embodiment has the following differences compared to the scroll compressors provided in the first, second, and third embodiments:

[0054] like Figure 7 and Figure 7-1 As shown, the outline of the continuous oil supply area 231 is circular. When the orbiting scroll 30 rotates relative to the fixed scroll 20, the movement trajectory 35 of the oil supply hole 33 is completely located in the continuous oil supply area 231. Figure 7-1 That is, during the planar rotation of the orbiting scroll 30 relative to the fixed scroll 20, the oil supply hole 33 is always connected to the continuous oil supply area 231. That is, the oil supply hole 33 always works toward the continuous oil supply area 231, ensuring sufficient oil delivery to the oil groove 23 and lubricating the first contact surface 21 and the second contact surface 31.

[0055] The scroll compressor provided in the fourth embodiment is compared with the scroll compressor provided in the first, second and third embodiments. Except for the above-mentioned structural differences, the remaining structures are the same, and thus will not be described in detail here.

[0056] Embodiment 5:

[0057] The scroll compressor provided in the fifth embodiment has the following differences compared to the scroll compressors provided in the first, second, third, and fourth embodiments:

[0058] like Figure 8 As shown, the continuous oil supply area 231 is provided between the two ends of the oil groove 23. At this time, after the oil supply hole 33 inputs oil into the continuous oil supply area 231, the oil flows along the oil groove 23 from the continuous oil supply area 231 to the two ends of the oil groove 23.

[0059] Furthermore, in the fifth embodiment, the width of the oil groove 23 is gradually widened in the direction from the continuous oil supply area 231 to one end of the oil groove 23, that is, Figure 8 δ3>δ2>δ1; and, in the direction from the continuous oil supply area 231 to the other end of the oil groove 23, the width of the oil groove 23 is also gradually widened, that is, Figure 8 δ3′>δ2′>δ1′. Thus, as the oil flows along the oil groove 23 from the continuous oil supply area 231 to the two ends of the oil groove 23, the flow resistance of the oil in the oil groove 23 can be reduced, thereby ensuring that the oil can flow along the oil groove 23 to the entire oil groove 23, ensuring that the first contact surface 21 and the second contact surface 31 can be effectively lubricated under any operating conditions within the operating range of the scroll compressor.

[0060] The scroll compressor provided in the fifth embodiment is compared with the scroll compressor provided in the first, second, third and fourth embodiments. Except for the above-mentioned structural differences, the remaining structures are the same, and thus will not be described in detail here.

[0061] According to another aspect of the present invention, a refrigeration device is provided, specifically comprising the aforementioned scroll compressor. The scroll compressor provided by the present invention is assembled to form the refrigeration equipment. The scroll compressor compresses the refrigerant to realize heat conduction for refrigeration. Moreover, during the operation of the scroll compressor, since the oil groove 23 on the first contact surface 21 of the fixed scroll plate 20 is provided with a continuous oil supply area 231, and within a predetermined time range in a cycle of rotation of the movable scroll plate 30 relative to the plane of the fixed scroll plate 20, the oil supply hole 33 on the movable scroll plate 30 is continuously connected to the continuous oil supply area 231, so that sufficient oil can flow from the oil supply hole 33 into the continuous oil supply area 231, and then the oil flows along the oil groove 23. Moreover, under the driving action of the movement of the movable scroll plate 30 relative to the fixed scroll plate 20, sufficient oil will always be evenly distributed between the first contact surface 21 and the second contact surface 31, thereby improving the lubrication condition between the first contact surface 21 and the second contact surface 31, and ensuring effective lubrication even under harsh working conditions, preventing abnormal wear, and ensuring the normal operation of the scroll compressor.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A scroll compressor comprising: A housing, wherein the housing is provided with an installation inner cavity; a fixed scroll, the fixed scroll being fixedly connected to the mounting inner cavity, the fixed scroll being provided with a first contact surface and a first scroll sheet connected to the first contact surface; an orbiting scroll movably connected to the mounting inner cavity, the orbiting scroll being provided with a second contact surface and a second scroll sheet connected to the second contact surface, the second scroll sheet and the first scroll sheet being engaged with each other to form a compression cavity, and an edge region of the second contact surface being in contact with an edge region of the first contact surface; It is characterized by: An oil groove is formed on the first contact surface, the oil groove surrounds the first scroll plate, and the oil groove includes a continuous oil supply area; an oil supply hole is formed on the second contact surface, and the oil supply hole is always connected to the continuous oil supply area; The continuous oil supply area is close to the air inlet of the compression chamber, so that the pressure difference between the upper and lower ends of the crankshaft oil channel is stable.

2. The scroll compressor according to claim 1, wherein: The oil groove surrounds the first scroll sheet in a fan shape.

3. The scroll compressor according to claim 1, wherein: The oil groove is arranged to surround the first scroll plate, and two groove ends of the oil groove are staggered and not connected.

4. The scroll compressor according to claim 2 or 3, characterized in that: The continuous oil supply area is arranged at one end of the oil tank.

5. The scroll compressor according to claim 4, wherein: The width of the oil groove is gradually widened in a direction from the continuous oil supply area to the other end of the oil groove.

6. The scroll compressor according to claim 2 or 3, characterized in that: The continuous oil supply area is arranged between the two ends of the oil tank.

7. The scroll compressor according to claim 6, characterized in that The width of the oil groove is gradually widened in the direction from the continuous oil supply area to one end of the oil groove; and the width of the oil groove is also gradually widened in the direction from the continuous oil supply area to the other end of the oil groove.

8. The scroll compressor according to claim 1, wherein: The contour shape of the continuous oil supply area is any one of an arc, a broken line, an L-shape, a triangle, a rectangle, a circle, an ellipse, a regular polygon and a ring.

9. A refrigeration device, characterized in that: The refrigeration device comprises the scroll compressor according to any one of claims 1 to 8.

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