Scroll compressor

Abstract

This invention provides a scroll compressor, comprising: a compression mechanism adapted to compress a working fluid and including a moving scroll, the moving scroll including a moving scroll end plate having a contact surface; and a main bearing housing including a thrust plate having a thrust surface in contact with the contact surface and adapted to support the compression mechanism. An oil delivery passage is provided in at least one of the moving scroll end plate and the thrust plate, configured to supply lubricating oil from a lubricating oil source to the space between the contact surface and the thrust surface, and includes an oil delivery groove disposed at the contact surface and / or the thrust surface. The oil delivery passage further includes an oil distribution member arranged in the oil delivery groove to form an oil distribution channel adapted to distribute lubricating oil in the oil delivery groove to the space between the contact surface and the thrust surface. The scroll compressor according to the invention can adequately and uniformly distribute lubricating oil between the contact surface and the thrust surface, particularly to the entire thrust surface, to provide improved oil supply and lubrication performance.

Description

Technical Field

[0001] This invention relates to a scroll compressor, and more specifically, to a scroll compressor that improves the oil supply and lubrication between the moving scroll end plate of the moving scroll and the thrust surface of the main bearing housing (thrust plate). Background Technology

[0002] This section provides background information related to the present invention, which does not necessarily constitute prior art.

[0003] Compressors (e.g., scroll compressors) can be used in, for example, refrigeration systems, air conditioning systems, and heat pump systems. A scroll compressor includes: a compression mechanism for compressing a working fluid (e.g., refrigerant), the compression mechanism comprising a moving scroll and a stationary scroll; a thrust plate (of the main bearing housing) located on one side of the end plate of the moving scroll, the thrust surface of which maintains surface contact with the contact end face of the end plate of the moving scroll to support the moving scroll and maintain stable engagement between the moving scroll and the stationary scroll; and a lubricating oil source storing and supplying lubricating oil to the various moving parts for lubrication. During operation, the scroll compressor undergoes a revolving relative motion with respect to the stationary scroll, and also a revolving relative motion with respect to the thrust plate. Therefore, there is relative frictional motion between the end face of the moving scroll's end plate and the thrust surface of the thrust plate. To reduce wear and power consumption, lubrication (e.g., supplying lubricating oil) is required between the end face of the moving scroll's end plate and the thrust surface of the thrust plate to mitigate frictional losses.

[0004] In existing technologies, lubrication between the thrust surface of the thrust plate and the contact end face of the moving volute is achieved by utilizing the volute's overturning mechanism to deliver lubricating oil from the main bearing housing cavity to lubricate the thrust surface and end face. However, this lubrication method is limited by the volute design and the amount of oil within the cavity. Existing technologies also utilize oil supply channels within the main bearing housing to lubricate the thrust surface and end face, but the lubricating oil rarely reaches the entire thrust surface and is limited by the amount of oil below the main bearing housing. Furthermore, existing technologies also use annular oil grooves on the moving volute end plate for thrust surface lubrication; however, this still suffers from uneven lubrication across the entire thrust surface (the lubricating oil in the annular groove rarely reaches areas of the thrust surface far from the oil inlet, or the amount reaching those areas is minimal).

[0005] To alleviate the problems of increased friction loss and high power consumption, it is desirable to ensure that sufficient lubricating oil is evenly supplied between the end face of the moving vortex and the thrust surface of the thrust plate under any operating conditions, thereby greatly reducing wear and power consumption.

[0006] Therefore, there is a need for a scroll compressor that improves the oil supply and lubrication between the end face and thrust face of the moving scroll. Summary of the Invention

[0007] This section provides a general overview of the invention, rather than a full disclosure of the invention's complete scope or all its features.

[0008] The present invention provides a scroll compressor having a structure in which an oil distribution component is provided in the oil tank to form an oil distribution channel, so that lubricating oil can be fully and evenly distributed to the thrust surface, especially to the entire thrust surface, thereby significantly improving the oil supply and lubrication performance.

[0009] According to one aspect of the present invention, a scroll compressor is provided, comprising: a compression mechanism adapted to compress a working fluid and including a moving scroll, the moving scroll including a moving scroll end plate having a contact surface; and a main bearing housing including a thrust plate having a thrust surface in contact with the contact surface to support the compression mechanism, wherein an oil delivery passage is provided in at least one of the moving scroll end plate and the thrust plate, the oil delivery passage being configured to supply lubricating oil from a lubricating oil source to between the contact surface and the thrust surface, the oil delivery passage including an oil delivery groove disposed at the contact surface and / or the thrust surface, and an oil distribution member disposed in the oil delivery groove to form an oil distribution channel adapted to distribute lubricating oil in the oil delivery groove to the area between the contact surface and the thrust surface.

[0010] Advantageously, the oil delivery trough is annular, and the oil distribution component is annular.

[0011] Advantageously, the oil distribution member is arranged to be spaced apart from the base surface of the oil delivery tank to form an oil storage space between the oil distribution member and the base surface.

[0012] Advantageously, the oil delivery trough and the oil distribution member are configured such that the number and size of the formed oil distribution channels allow lubricating oil to be stored in each portion of the oil storage space in the circumferential direction.

[0013] Advantageously, the oil distribution channel is formed in at least one of the following ways: the oil distribution member includes one or more slits extending axially through the oil distribution member, the one or more slits forming the oil distribution channel; the oil distribution member includes one or more outer recesses extending axially through the oil distribution member and disposed on a radially outer surface, the one or more outer recesses cooperating with the radially outer wall of the oil delivery groove to form the oil distribution channel; the oil distribution member includes one or more inner recesses extending axially through the oil distribution member and disposed on a radially inner surface, the one or more inner recesses cooperating with the radially inner wall of the oil delivery groove to form the oil distribution channel.

[0014] Advantageously, the outer recess is recessed to a depth of 0.1 mm to 3 mm relative to the radially outer surface, and / or the inner recess is recessed to a depth of 0.1 mm to 3 mm relative to the radially inner surface.

[0015] Advantageously, the depth of the outer recess relative to the radially outer surface is indented in a ratio of 3% to 50% of the width of the oil channel, and / or, the depth of the inner recess relative to the radially inner surface is indented in a ratio of 3% to 50% of the width of the oil channel.

[0016] Advantageously, the oil distribution channel includes a plurality of oil distribution channels, wherein: the plurality of oil distribution channels are uniformly distributed in the circumferential direction and have a consistent size; or, the plurality of oil distribution channels are non-uniformly distributed in the circumferential direction and / or the plurality of oil distribution channels have non-consistent sizes.

[0017] Advantageously, the oil supply tank includes an inlet for supplying lubricating oil from the lubricating oil source into the oil supply tank, and the cross-sectional area of ​​the oil distribution channel farther from the inlet among the plurality of oil distribution channels is greater than or equal to the cross-sectional area of ​​the oil distribution channel closer to the inlet among the plurality of oil distribution channels.

[0018] Advantageously, the oil separating component is a component manufactured by machining, stamping, powder metallurgy or injection molding.

[0019] Advantageously, the oil delivery channel is disposed in the moving vortex end plate and further includes an interconnected oil inlet channel and an intermediate channel disposed in the moving vortex end plate, wherein the oil inlet channel is connected to the lubricating oil source and the intermediate channel is connected to the oil delivery groove.

[0020] Advantageously, the moving vortex includes a hub that defines an inner space, and the oil inlet channel opens into the inner space; and / or, the main bearing housing defines a main bearing housing cavity, and the oil inlet channel opens into the main bearing housing cavity.

[0021] In summary, the scroll compressor according to the present invention provides at least the following beneficial effects: by constructing an oil distribution channel by providing an oil distribution component in the oil supply tank, the lubricating oil can be fully and evenly distributed to the thrust surface, thereby achieving improved lubrication. More specifically, for the entire thrust surface, the above-mentioned structure acts as a "dam" for storing and distributing the lubricating oil, preventing the lubricating oil from leaking too quickly at local locations in the oil supply path (e.g., near the oil inlet) and failing to distribute evenly to locations away from the oil inlet, thus achieving full and even distribution of the lubricating oil across the entire thrust surface. Attached Figure Description

[0022] The foregoing and other features and characteristics of the invention will become clearer from the following detailed description with reference to the accompanying drawings, which are by way of example only and are not necessarily drawn to scale. The same reference numerals are used in the drawings to indicate the same or similar parts, in which:

[0023] Figure 1 A longitudinal cross-sectional view of a scroll compressor according to the present invention is shown, in which the arrangement of the thrust plate of the main bearing housing and the moving scroll is shown.

[0024] Figure 2 It shows Figure 1 A three-dimensional view of a moving vortex with an oil delivery channel and an oil distribution component (in a decomposed state) on the end plate of the moving vortex, wherein the oil delivery channel and the oil distribution component are in a schematic decomposed state.

[0025] Figure 3 It shows Figure 2 A bottom view of the moving vortex, in which the oil distribution component is set in the oil delivery tank.

[0026] Figure 3A It shows Figure 3 A magnified view of detail X in the image, showing the outer recess on the radial outer surface of the oil distribution member, which serves as an oil distribution channel.

[0027] Figure 4 It shows Figure 3 A cross-sectional view of the moving vortex along line AA, showing the oil transport channel.

[0028] Figure 4A It shows Figure 4 The enlarged view of detail Y in the image shows a cross-sectional view of the oil distribution channel and the oil storage space.

[0029] Figure 5 A bottom view of a scroll compressor with a modified oil distribution channel according to the present invention is shown.

[0030] Figure 5A It shows Figure 5 A magnified view of detail Z in the image, showing the inner recess on the radial inner surface of the oil distribution member, which serves as a modified oil distribution channel.

[0031] Figure 6 It shows Figure 5 A cross-sectional view of the moving vortex along the BB line, showing the oil transport channel.

[0032] Figure 6A It shows Figure 6 The enlarged view of detail K in the image shows a cross-sectional view of the modified oil separation channel.

[0033] Figure 7A bottom view of a scroll compressor according to the invention, showing a moving scroll with a modified oil distribution channel, is shown.

[0034] Figure 7A It shows Figure 7 The enlarged view of detail M shows the slit extending axially through the oil distribution member as a modified oil distribution channel.

[0035] Figure 8 It shows Figure 7 A cross-sectional view of the moving vortex along the CC line, showing the oil transport channel.

[0036] Figure 8A It shows Figure 8 The enlarged view of detail N in the image shows a cross-sectional view of the modified oil separation channel.

[0037] Figures 9 to 11 The modified oil inlet channel of the moving scroll of the scroll compressor according to the present invention is shown as a further aspect of the oil delivery passage, wherein, Figure 9 The oil inlet channel is shown to be configured to lead to the cavity of the main bearing housing; Figure 10 The oil inlet channel is shown to be configured to open toward the central compression chamber; Figure 11 The oil inlet channel leads to the air intake chamber. Detailed Implementation

[0038] Preferred embodiments of the invention will now be described in detail with reference to the accompanying drawings. The following description is exemplary in nature and is not intended to limit the invention or its application or use.

[0039] In the exemplary embodiments described below, the scroll compressor is exemplarily shown as a vertical scroll compressor. However, the scroll compressor according to the invention is not limited to this type, but can be any type of scroll compressor such as a horizontal scroll compressor.

[0040] Figure 1 A longitudinal cross-sectional view of a scroll compressor according to the present invention is shown. First, referring to... Figure 1 The overall structure of the scroll compressor according to the present invention is described in summary.

[0041] like Figure 1As shown, the scroll compressor 1 may include a generally cylindrical housing 12, an electric motor (including a stator 14 and a rotor 15), a drive shaft 16, a main bearing housing 18, a moving scroll 34, and a fixed scroll 22. The moving scroll 34 and the fixed scroll 22 constitute a compression mechanism CM suitable for compressing a working fluid (e.g., a refrigerant), wherein the fixed scroll 22 includes a fixed scroll end plate, a fixed scroll scroll, and an exhaust port located at the center of the fixed scroll; the moving scroll 34 includes a moving scroll end plate 341, a hub 340 extending from a first side P1 of the moving scroll end plate 341, and a moving scroll scroll extending from a second side P2 of the moving scroll end plate 341. An open intake chamber in fluid communication with the intake port (not shown) of the compression mechanism CM is defined within the compression mechanism CM, and a closed compression chamber for compressing the working fluid is formed by the engagement of the fixed scroll scroll and the moving scroll scroll.

[0042] A cover 26 located at the top of the housing 12 and a base 28 located at the bottom of the housing 12 can be installed onto the housing 12, thereby defining the internal volume of the scroll compressor 1. For example, lubricating oil can be stored in an oil sump O in the bottom of the housing 12 for lubricating various components of the scroll compressor 1 (e.g., the moving scroll 34, the stationary scroll 22, and the thrust plate 181 of the main bearing housing 18, etc.). Here, it should be noted that the oil sump O serves as the overall lubricating oil source according to the present invention.

[0043] The electric motor includes a stator 14 and a rotor 15. The rotor 15 drives a drive shaft 16 to rotate the drive shaft 16 about its axis of rotation relative to the housing 12. The drive shaft 16 may include an eccentric pin, which is mounted to or integrally formed with the first end (top) of the drive shaft 16.

[0044] The drive shaft 16 may include a central bore 52 and an eccentric bore 56 (only a portion of the eccentric bore 56 is shown in the figure). The central bore 52 is formed at the second end (bottom end) of the drive shaft 16, and the eccentric bore 56 extends upward from the central bore 52 to the end surface of the eccentric pin. The end (lower end) of the central bore 52 can be immersed in an oil sump O at the bottom of the housing 12 of the scroll compressor 1, thereby allowing lubricating oil to be delivered from the oil sump O at the bottom of the housing 12 under the action of centrifugal force generated by the rotation of the drive shaft 16, for example, and allowing the lubricating oil to flow upward through the central bore 52 and the eccentric bore 56 and out from the end surface of the eccentric pin.

[0045] Lubricating oil flowing from the end surface of the eccentric pin can flow to, for example, a lubricating oil supply area formed between the eccentric pin and the moving scroll 34, and between the main bearing housing 18 and the moving scroll 34. The lubricating oil in this lubricating oil supply area can lubricate, for example, the rotating joints and sliding surfaces between the eccentric pin and the moving scroll 34, and between the main bearing housing 18 and the moving scroll 34.

[0046] The moving vortex 34 is axially supported by the thrust plate 181 of the main bearing housing 18 and is supported so as to be able to rotate. Figure 1 The thrust plate 181 is integrally formed with the main bearing housing 18. In other embodiments, the thrust plate 181 may be a separate part relative to the main bearing housing 18. The hub 340 of the moving scroll 34 may be rotatably connected to the eccentric pin. Alternatively, the hub 340 may be rotatably connected to the eccentric pin via a sleeve or bearing. As described above, lubricating oil supplied to the eccentric pin and flowing out of the eccentric pin through the above exemplary eccentric oil supply scheme can then enter the space within the hub 340. After lubricating the hub 340, the eccentric pin, or the bearing, the lubricating oil accumulates in the cavity 182 of the main bearing housing 18 (see [link to documentation]). Figure 9 In the rotating agitation of a hub 340, such as a moving vortex and / or a counterweight (not shown), the lubricating oil in the main bearing housing cavity 182 of the main bearing housing 18 adheres in the form of an oil mist to the moving vortex end plate and the thrust plate of the main bearing housing, thereby providing lubrication.

[0047] The fixed scroll 22 is mounted to the main bearing housing 18, for example, using mechanical fasteners. The moving scroll 34 is driven by an electric motor via a drive shaft 16 (specifically, an eccentric pin), thereby enabling it to perform translational rotation relative to the fixed scroll 22—that is, circumferential rotation (i.e., the axis of the moving scroll 34 revolves relative to the axis of the fixed scroll 22, but neither the moving scroll 34 nor the fixed scroll 22 rotates about their respective axes). Thus, as the cavities defined by the fixed and moving scrolls move from the radially outer to the radially inner side, the unclosed intake chamber transforms into a series of closed compression chambers: from the outer low-pressure compression chamber to the middle intermediate compression chamber and then to the high-pressure compression chamber at the center (with the highest pressure), and the volume of the cavities gradually decreases. In this way, the pressure in the cavity gradually increases, so that the working fluid (e.g., refrigerant) in the cavity (compression chamber) is compressed and eventually discharged from the exhaust port located at the radial center of the end plate of the fixed scroll 22 and then discharged to the outside of the casing 12 of the scroll compressor 1 via the discharge fitting, thereby realizing the working cycle of working fluid intake, compression and discharge.

[0048] The following will refer to Figures 1 to 11 A scroll compressor with an improved lubricating oil delivery channel according to the present invention is described in detail.

[0049] See attached document Figures 1 to 4AThe first side surface P1 of the moving scroll end plate 341 of the moving scroll 34 serves as the contact surface, and the thrust surface 111 of the thrust plate 181 of the main bearing housing 18 contacts the first side surface (contact surface) P1 of the moving scroll end plate, thereby adapting it to support the compression mechanism CM. An oil supply channel 13 is provided in the moving scroll end plate 341, and the oil supply channel is configured to supply lubricating oil from the lubricating oil source to the space between the contact surface P1 and the thrust surface 111.

[0050] Specifically, the oil delivery channel 13 includes an oil delivery groove 100 disposed at the contact surface P1 of the moving vortex end plate 341. The oil delivery channel 13 also includes an oil distribution member 200, which is arranged in the oil delivery groove 100 to form an oil distribution channel DP suitable for distributing the lubricating oil in the oil delivery groove to the contact surface and the thrust surface. By setting the oil distribution member in the oil delivery groove to form an oil distribution channel, the lubricating oil can be fully and evenly distributed to the thrust surface to achieve an improved lubrication effect. More specifically, for the entire thrust surface, the above structure acts like a "dam" to store and distribute the lubricating oil, preventing the lubricating oil from leaking too quickly at local locations in the oil supply path (e.g., near the oil inlet) and failing to reach locations far from the oil inlet, thereby achieving full and even distribution of the lubricating oil across the entire thrust surface.

[0051] The accompanying drawings show that the oil delivery channel 13 is disposed in the moving vortex end plate, while in other embodiments, the oil delivery channel 13 may also be disposed in the corresponding thrust plate 181 that contacts the moving vortex end plate.

[0052] In the example shown in the accompanying drawings, the oil channel 100 is annular around the hub 340, and the oil distribution member 200 is also annular, as is the thrust surface 111. The annular shape of the oil channel 100 facilitates the rapid and uniform distribution of lubricating oil delivered to the thrust surface across the entire surface. However, those skilled in the art will appreciate that the oil channel 100 can be formed in any suitable form to supply lubricating oil to the entire area of ​​the thrust surface, thereby providing more uniform lubrication. Depending on the application, the oil channel can extend longitudinally along the first side surface (contact surface) P1 in a straight, zigzag, wavy, arc-shaped, annular, or spiral shape, and the cross-section of the oil channel can be rectangular, V-shaped, U-shaped, or irregular.

[0053] See Figures 3 to 4AThe oil supply channel 13 also includes an interconnected oil inlet channel 131A and an intermediate channel 130 disposed in the moving scroll end plate 341. The oil supply tank 100 includes an oil inlet 132 for supplying lubricating oil from a lubricant source into the oil supply tank. The intermediate channel 130 communicates with the oil supply tank 100 through the oil inlet 132. The hub 340 of the moving scroll 34 defines an inner hub space IH, and the oil inlet channel 131A opens into the inner hub space IH, thereby using the inner hub space IH as a lubricating oil source. Figure 2 and Figure 4A The oil distribution member 200 includes a first surface 210 that can contact the thrust surface 111 and a second surface 220 facing the base surface 101 of the oil tank 100. The second surface 220 of the oil distribution member 200 is arranged to be spaced apart from the base surface 101 of the oil tank to form an oil storage space OA between the oil distribution member and the base surface.

[0054] See Figures 2 to 3A The oil distribution member 200 includes a radially outer surface 230 and a radially inner surface 240. A plurality of outer recesses 231, axially penetrating the oil distribution member, are provided on the radially outer surface 230. These outer recesses 231 are uniformly distributed along the circumferential direction (the circumferential direction with respect to the drive shaft of the scroll compressor) and have consistent dimensions. The plurality of outer recesses 231 cooperate with the radially outer wall of the oil delivery groove 100 to form an oil distribution channel DP. In one aspect of the invention, a single outer recess 231, axially penetrating the oil distribution member, may be provided on the radially outer surface 230, and this single outer recess 231 cooperates with the radially outer wall of the oil delivery groove 100 to form the oil distribution channel DP.

[0055] The flow path of the lubricating oil will now be described, combined with... Figure 1 , Figure 4 and Figure 4A The lubricating oil in the inner space IH of the hub, which serves as the source of lubricating oil, enters the intermediate channel 130 through the oil inlet 131A. Then, the lubricating oil in the intermediate channel 130 enters the oil storage space OA through the oil inlet 132. The lubricating oil in the oil storage space OA is then distributed between the contact surface P1 and the thrust surface 111 through multiple outer recesses 231, so that the lubricating oil can be fully and evenly distributed to the entire thrust surface.

[0056] As a variation example of the oil distribution channel DP, see [link to relevant documentation]. Figures 5 to 6A The oil distribution channel DP can be a plurality of inner recesses 241 axially penetrating the oil distribution member 200 and disposed on the radial inner surface 240 of the oil distribution member 200. These inner recesses 241 cooperate with the radial inner wall of the oil delivery groove 100 to form the oil distribution channel. As another variation of the oil distribution channel DP, see [reference needed]. Figures 7 to 8AThe oil distribution channel DP can be multiple slits 201 extending axially through the oil distribution member 200. Of course, those skilled in the art will realize that the number of inner recesses 241 or slits 201 can be set to one as needed. Furthermore, those skilled in the art will also realize that multiple recesses can be provided circumferentially on the radially inner or radially outer sidewall of the oil channel 100 to cooperate with the corresponding radially inner surface (inner circumferential surface) or radially outer surface (outer circumferential surface) of the oil distribution member to form an oil distribution channel. Other oil distribution channel structures are also possible, as long as the formed oil distribution channel distributes the lubricating oil in the oil storage space to the thrust surface.

[0057] Although in the example above shown in the accompanying drawings, the oil distribution channels DP are depicted as a plurality of inner recesses, a plurality of outer recesses, or a plurality of slits uniformly arranged in the circumferential direction and of uniform size, those skilled in the art can make various modifications as needed, provided that the oil delivery channel 100 and the oil distribution member 200 are configured such that the number and size of the formed oil distribution channels DP allow lubricating oil to be stored in all portions of the oil storage space OA in the circumferential direction. For example, near the oil inlet, the number or size of the recesses or slits serving as oil distribution channels DP can be reduced to avoid premature leakage of lubricating oil that fails to adequately reach locations away from the oil inlet.

[0058] In one aspect of the invention, the plurality of oil distribution channels may be non-uniformly distributed in the circumferential direction and / or have non-uniform dimensions. Advantageously, the flow cross-sectional area of ​​the oil distribution channel farther from the oil inlet 132 of the oil delivery trough 100 is larger than that of the oil distribution channel closer to the oil inlet 132 of the oil delivery trough, thereby ensuring that the lubricating oil can sufficiently reach the location far from the oil inlet to achieve uniform lubrication across the entire thrust surface. In one aspect of the embodiment, the flow cross-sectional area of ​​the oil distribution channel farther from the oil inlet 132 of the oil delivery trough 100 may be equal to that of the oil distribution channel closer to the oil inlet 132 of the oil delivery trough.

[0059] Advantageously, Figure 3 The depth of the outer recess 231 of the oil separator 200 recessed relative to the radially outer surface 230 can be from 0.1 mm to 3 mm. Additionally or alternatively, the ratio of the depth of the outer recess 231 of the oil separator 200 recessed relative to the radially outer surface 230 to the width of the oil channel 100 can be 3%-50%. And / or, Figure 5The depth of the inner recess 241 of the oil separator 200 recessed relative to the radial inner surface 240 can be from 0.1 mm to 3 mm. Alternatively, the ratio of the depth of the inner recess 241 of the oil separator 200 recessed relative to the radial inner surface 240 to the width of the oil channel 100 can be 3%-50%.

[0060] Advantageously, the aforementioned oil separation component can be a component manufactured by machining, stamping, powder metallurgy, or injection molding.

[0061] Figure 4 In the example shown, the oil inlet channel 131A opens into the inner space IH of the hub, thereby using the inner space of the hub as a source of lubricating oil. According to other aspects of the invention, different lubricating oil sources can be achieved through different arrangements of the oil inlet channel 131. See also... Figure 9 The oil inlet channel 131B opens into the main bearing housing cavity 182, thereby serving as a source of lubricating oil. (See also...) Figure 10 The oil inlet channel 131C opens into an intermediate compression chamber with a pressure between the pressure of the intake chamber and the exhaust chamber. This intermediate compression chamber serves as a lubricating oil source. The positive pressure difference between the pressure in the intermediate compression chamber and the pressure at the thrust surface allows the oil delivery channel to actively supply lubricating oil from the compression chamber to the thrust surface 111, significantly increasing the lubricating oil supply. Furthermore, the lubricating oil sprayed onto the thrust surface 111 rapidly expands to all areas of the thrust surface 111 upon pressure release, thereby significantly improving lubrication and / or sealing performance. See also... Figure 11 The oil inlet channel 131D opens to the air intake chamber, which is used as a source of lubricating oil.

[0062] Although exemplary embodiments of the scroll compressor according to the present invention have been described in the foregoing embodiments, the present invention is not limited thereto, and various modifications, substitutions and combinations can be made without departing from the scope of protection of the present invention.

[0063] It is evident that by combining or modifying different implementation methods and various technical features in different ways, various different implementation methods can be designed.

[0064] The scroll compressor according to a preferred embodiment of the present invention has been described above with reference to specific embodiments. It is understood that the above description is merely exemplary and not restrictive, and various modifications and variations can be conceived by those skilled in the art with reference to the above description without departing from the scope of the invention. These modifications and variations are also included within the scope of protection of the present invention.

Claims

1. A scroll compressor (1) comprising: a compression mechanism (CM) adapted to compress a working fluid and comprising an orbiting scroll (34) comprising an orbiting scroll end plate (341) having a contact surface (P1); and a main bearing housing (18) comprising a thrust plate (181) having a thrust surface (111) in contact with the contact surface (P1) so as to be adapted to support the compression mechanism, wherein an oil feeding passage (13) is provided in at least one of the orbiting scroll end plate (341) and the thrust plate (181), the oil feeding passage (13) being configured to feed lubricating oil from a lubricating oil source to between the contact surface (P1) and the thrust surface (111), the oil feeding passage (13) comprising an oil feeding groove (100) provided at the contact surface (P1) and / or the thrust surface (111), characterized in that a oil distribution member is arranged in the oil feeding groove to form an oil distribution passage (DP) adapted to distribute the lubricating oil in the oil feeding groove to between the contact surface and the thrust surface, the oil distribution member (200) being arranged spaced apart from a base surface (101) of the oil feeding groove to form an oil accumulation space (OA) between the oil distribution member and the base surface, the oil distribution passage (DP) extending from the oil accumulation space (OA) to between the contact surface and the thrust surface.

2. The scroll compressor of claim 1, wherein, The oil feeding groove (100) is annular, and the oil distribution member (200) is an annular member.

3. The scroll compressor of claim 1 or 2, wherein, The oil distribution passage (DP) is formed by at least one of: The oil distribution member (200) comprises one or more slits (201) axially through the oil distribution member, the one or more slits (201) forming the oil distribution passage; The oil distribution member (200) comprises one or more outer side recesses (231) axially through the oil distribution member provided at a radially outer side surface (230), the one or more outer side recesses cooperating with a radially outer side wall of the oil feeding groove to form the oil distribution passage; The oil distribution member (200) comprises one or more inner side recesses (241) axially through the oil distribution member provided at a radially inner side surface (240), the one or more inner side recesses cooperating with a radially inner side wall of the oil feeding groove to form the oil distribution passage.

4. The scroll compressor of claim 3, wherein, A depth of the outer side recess (231) recessed relative to the radially outer side surface (230) is 0.1 mm to 3 mm, and / or a depth of the inner side recess (241) recessed relative to the radially inner side surface (240) is 0.1 mm to 3 mm.

5. The scroll compressor of claim 3, wherein, A ratio of the depth of the outer side recess (231) recessed relative to the radially outer side surface (230) relative to a groove width of the oil feeding groove (100) is 3%-50%, and / or a ratio of the depth of the inner side recess (241) recessed relative to the radially inner side surface (240) relative to a groove width of the oil feeding groove (100) is 3%-50%.

6. The scroll compressor of claim 1 or 2, wherein, The oil distribution passage (DP) includes a plurality of oil distribution passages, and wherein: the plurality of oil distribution passages are non-uniformly distributed in a circumferential direction and / or the plurality of oil distribution passages have non-uniform sizes.

7. The scroll compressor of claim 6, wherein, The oil distribution passage (DP) includes a plurality of oil distribution passages, and wherein: the plurality of oil distribution passages are non-uniformly distributed in a circumferential direction and / or the plurality of oil distribution passages have non-uniform sizes.

8. The scroll compressor of claim 1 or 2, wherein, The oil distribution member is a member manufactured by machining, stamping, powder metallurgy, or injection molding.

9. The scroll compressor of claim 1 or 2, wherein, The oil distribution passage (DP) includes a plurality of oil distribution passages, and wherein: the plurality of oil distribution passages are non-uniformly distributed in a circumferential direction and / or the plurality of oil distribution passages have non-uniform sizes.

10. The scroll compressor of claim 9, wherein, The oil distribution passage (DP) includes a plurality of oil distribution passages, and wherein: the plurality of oil distribution passages are non-uniformly distributed in a circumferential direction and / or the plurality of oil distribution passages have non-uniform sizes. The oil distribution passage (DP) includes a plurality of oil distribution passages, and wherein: the plurality of oil distribution passages are non-uniformly distributed in a circumferential direction and / or the plurality of oil distribution passages have non-uniform sizes.

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