Scroll compressor

Abstract

A scroll compressor is disclosed. The scroll compressor comprises: a housing; a frame fixed to the inside of the housing; a fixed scroll coupled to the frame to be fixed to the inside of the housing; an orbiting scroll provided to perform an orbiting motion with respect to the fixed scroll and including a boss portion; an eccentric portion inserted into the boss portion to transmit rotational force to the boss portion; a shaft including an oil flow path; a bearing member coupled to the shaft to rotate together with the shaft and including a boss receiving groove into which the boss portion is inserted; a first bearing provided between the frame and the bearing member to rotatably support the bearing member; a second bearing provided between the boss portion and the eccentric portion to rotatably support the eccentric portion, the second bearing being disposed to at least partially overlap the first bearing in the radial direction of the first bearing; a first bearing flow path for supplying oil from the oil flow path to the first bearing; and a second bearing flow path for supplying oil from the oil flow path to the second bearing.

Description

Scroll compressor

[0001] The present invention relates to a scroll compressor used in air conditioners, etc.

[0002] A scroll compressor is a compressor that includes a fixed scroll having a fixed wrap and a rotary scroll having a rotary wrap corresponding to the wrap of the fixed scroll, and forms a compression chamber that moves continuously between the fixed wrap and the rotary wrap while the rotary scroll rotates relative to the fixed scroll to suck in and compress refrigerant.

[0003] Since these scroll compressors perform suction, compression, and discharge continuously, they have superior advantages over other types of compressors in terms of vibration and noise generated during operation.

[0004] Scroll compressors can be used in various technical fields and products. For example, scroll compressors can be used as compressors in air conditioners.

[0005] One aspect of the present disclosure provides a scroll compressor with improved efficiency by reducing flow loss caused by oil contacting a rotating structure.

[0006] One aspect of the present disclosure provides a scroll compressor with improved efficiency by improving the oil supply path.

[0007] The technical problems to be solved in this document are not limited to those mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art to which this invention belongs from the description below.

[0008] A scroll compressor according to the present disclosure comprises a housing, a frame fixed to the inside of the housing, a fixed scroll coupled to the frame so as to be fixed to the inside of the housing, a pivoting scroll arranged to pivot relative to the fixed scroll and including a boss portion, an eccentric portion arranged to be inserted into the boss portion and to transmit rotational force to the boss portion, a shaft including an oil passage, a bearing member coupled to the shaft to rotate together with the shaft and including a boss receiving groove into which the boss portion is inserted, a first bearing arranged between the frame and the bearing member to rotatably support the bearing member, and a second bearing arranged between the boss portion and the eccentric portion to rotatably support the eccentric portion, wherein the second bearing is arranged such that at least a portion overlaps with the first bearing in the radial direction of the first bearing, a first bearing passage supplying oil from the oil passage to the first bearing, and a second bearing passage supplying oil from the oil passage to the second bearing.

[0009] A scroll compressor according to the present disclosure comprises a housing, a frame fixed to the inside of the housing, a fixed scroll coupled to the frame so as to be fixed to the inside of the housing, a pivoting scroll arranged to pivot relative to the fixed scroll and including a boss portion, an eccentric portion arranged to be inserted into the boss portion and to transmit rotational force to the boss portion, a shaft including an oil passage, a bearing member coupled to the shaft to rotate together with the shaft and including a boss receiving groove into which the boss portion is inserted, a first bearing arranged between the frame and the bearing member to rotatably support the bearing member, and a second bearing arranged between the boss portion and the eccentric portion to rotatably support the eccentric portion, wherein the second bearing is arranged such that at least a portion overlaps with the first bearing in the radial direction of the first bearing, a first oil supply passage arranged to be connected to the first bearing by bypassing the second bearing from the oil passage, and a second oil supply passage arranged to supply oil from the oil passage to the first bearing via the second bearing.

[0010] FIG. 1 is a perspective view of a scroll compressor according to one embodiment.

[0011] FIG. 2 is a cross-sectional view of a scroll compressor according to one embodiment.

[0012] Figure 3 illustrates an enlarged view of A in Figure 2.

[0013] FIG. 4 illustrates a disassembled view of a part of a scroll compressor according to one embodiment.

[0014] FIG. 5 illustrates a partial configuration of a scroll compressor according to one embodiment.

[0015] FIG. 6 illustrates an enlarged view of the area corresponding to B in FIG. 3 in a scroll compressor according to one embodiment.

[0016] Figure 7 is a rear perspective view of a part of the configuration of Figure 6.

[0017] FIG. 8 illustrates an enlarged view of the area corresponding to B in FIG. 3 in a scroll compressor according to one embodiment.

[0018] Fig. 9 is a perspective view of a part of the configuration of Fig. 8.

[0019] FIG. 10 illustrates an enlarged view of the area corresponding to B in FIG. 3 in a scroll compressor according to one embodiment.

[0020] FIG. 11 is a front perspective view of a part of FIG. 10.

[0021] The embodiments described in this specification and the configurations illustrated in the drawings are merely preferred examples of the disclosed invention, and various modifications that may replace the embodiments and drawings of this specification may exist at the time of filing this application.

[0022] Additionally, the same reference numerals or symbols presented in each drawing of this specification represent parts or components that perform substantially the same function.

[0023] Additionally, the singular form of the noun corresponding to the item may include one or multiple items, unless the relevant context clearly indicates otherwise.

[0024] Additionally, in this document, each of the phrases such as "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "at least one of A, B, or C" may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof.

[0025] Additionally, the terms "part," "module," and "component" may be implemented in hardware or software. Depending on the embodiments, a plurality of "parts," "modules," and "components" may be implemented as a single component, or a single "part," "module," or "component" may include a plurality of components.

[0026] Furthermore, the terms used in this specification are for describing embodiments and are not intended to limit or / or restrict the disclosed invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and do not preclude the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0027] Additionally, terms including ordinal numbers, such as "first," "second," etc., used herein may be used to describe various components, but said components are not limited by said terms, and said terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. The term "and / or" includes a combination of a plurality of related described items or any one of a plurality of related described items.

[0028] Where any (e.g., 1st) component is referred to as "coupled" or "connected" to another (e.g., 2nd) component, with or without the terms "functionally" or "communicationly," it means that said any component may be connected to said other component directly (e.g., via a wire), wirelessly, or through a third component.

[0029] When it is said that a component is "connected," "combined," "supported," or "in contact" with another component, this includes not only cases where the components are directly connected, combined, supported, or in contact, but also cases where they are indirectly connected, combined, supported, or in contact through a third component.

[0030] When it is said that a component is located "on" another component, this includes not only cases where one component is in contact with the other, but also cases where another component exists between the two components.

[0031] Meanwhile, terms such as "up / down direction" and "front / back direction" used in the following description are defined based on the drawings, and the shape and position of each component are not limited by these terms. For example, the terms "front" and "rear" below may refer to the +X direction and -X direction, respectively, as depicted in the drawings. The terms "up" and "down" below may refer to the +Z direction and -Z direction, respectively, as depicted in the drawings. The terms "left direction" and "right direction" below may refer to the +Y direction and -Y direction, respectively, as depicted in the drawings. The term "vertical direction" below may refer to the Z direction, respectively, as depicted in the drawings, and the term "horizontal direction" below may refer to the Y direction, respectively, as depicted in the drawings. However, in some drawings, the +X direction may be referred to as "up" and the -X direction may be referred to as "down."

[0032] Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

[0033] FIG. 1 is a perspective view of a scroll compressor according to one embodiment.

[0034] Referring to FIG. 1, the scroll compressor (1) may include a housing (10). The housing (10) may form the exterior of the scroll compressor (1). The housing (10) may be referred to by other terms such as casing, case, or body.

[0035] The housing (10) may form a sealed space inside. The housing (10) may be formed as a sealed container. The housing (10) may include a refrigerant inlet into which a refrigerant inlet pipe (14) is inserted or connected. The housing (10) may include a refrigerant outlet into which a refrigerant outlet pipe (15) is inserted or connected. Refrigerant may flow into the housing (10) through the refrigerant inlet pipe (14). Refrigerant inside the housing (10) may be discharged to the outside of the housing (10) through the refrigerant outlet pipe (15).

[0036] According to one embodiment, a scroll compressor (1) may be installed in an outdoor unit of an air conditioner. The scroll compressor (1) may form a refrigeration cycle together with a condenser, an expansion valve, and an evaporator. A refrigerant inlet pipe (14) may be connected to an evaporator, and a refrigerant outlet pipe (15) may be connected to a condenser.

[0037] The housing (10) may include a cylindrical main body (11) with an open top and bottom surface, and an upper cap (12) and a lower cap (13) mounted respectively on the upper and lower parts of the main body (11) to seal the interior of the main body (11). The connection between the main body (11), the upper cap (12), and the lower cap (13) may be sealed so that the interior of the housing (10) is sealed.

[0038] Low temperature and low pressure refrigerant can be introduced through the refrigerant inlet pipe (14). The refrigerant can be introduced into the housing (10) through the refrigerant inlet pipe (14).

[0039] High-temperature and high-pressure refrigerant compressed by the compression part of the scroll compressor (1) can be discharged through the refrigerant discharge pipe (15). The refrigerant can be discharged outside the housing (10) through the refrigerant discharge pipe (15).

[0040] A base (16) supporting the housing (10) may be provided at the bottom of the housing (10). The base (16) may be coupled to the lower cap (13). The scroll compressor (1) may be installed vertically with respect to the bottom surface or support surface by means of the base (16).

[0041] FIG. 2 is a cross-sectional view of a scroll compressor according to one embodiment. FIG. 3 is an enlarged view of A in FIG. 2. FIG. 4 shows a disassembled view of a part of the configuration of a scroll compressor according to one embodiment.

[0042] Referring to FIGS. 2 to 4, a scroll compressor (1) according to one embodiment may include a housing (10), a frame (20), a fixed scroll (30), a pivot scroll (40), a shaft (50), and a driving motor (70).

[0043] The housing (10) forms the exterior of the scroll compressor (1) and may be a sealed container with a roughly cylindrical shape. A refrigerant inlet pipe (14) and a refrigerant outlet pipe (15) may each be connected to the housing (10).

[0044] The housing (10) can be formed by combining a main body (11), an upper cap (12), and a lower cap (13). Except for the inflow and outflow of refrigerant through the refrigerant inflow pipe (14) and the refrigerant outflow pipe (15), the interior of the housing (10) can be sealed. In other words, the interior of the housing (10) is sealed so that refrigerant can be introduced into the housing (10) only through the refrigerant inflow pipe (14) and refrigerant can be discharged outside the housing (10) only through the refrigerant outflow pipe (15).

[0045] A sump (17) for storing oil may be formed in the lower part of the housing (10). The sump (17) may refer to at least a portion of the lower space inside the housing (10). The oil stored in the sump (17) may be supplied to each bearing through the oil passage (53) described later.

[0046] The frame (20) may be installed inside the housing (10). The frame (20) may be installed to be fixed inside the housing (10). The frame (20) may be provided to support a fixed scroll (30) and a pivot scroll (40). The frame (20) may support the fixed scroll (30) so that the fixed scroll (30) is fixed inside the housing (10). The frame (20) may support the pivot scroll (40) so that the pivot scroll (40) can pivot relative to the frame (20) and the fixed scroll (30). A frame hole (21) may be formed in the frame (20) to allow a bearing member (60) to be inserted. The frame hole (21) may be formed by penetrating the center of the frame (20) in a vertical direction. The frame (20) may rotatably support the bearing member (60) so that the bearing member (60) rotates within the frame hole (21).

[0047] The fixed scroll (30) can be installed to be fixed inside the housing (10). The fixed scroll (30) can be fixed inside the housing (10) by being coupled to the frame (20). In other words, after the frame (20) is installed to be fixed inside the housing (10), the fixed scroll (30) can be coupled to the frame (20) fixed inside the housing (10). Through this, the fixed scroll (30) can be fixed inside the housing (10).

[0048] A fixed scroll (30) may be installed on the upper side of the frame (20). When the fixed scroll (30) is coupled to the frame (20), the lower surface of the fixed scroll (30) may be positioned to contact the upper surface of the frame (20). The fixed scroll (30) may be coupled to the frame (20) through a fastening member. For example, the fixed scroll (30) may be coupled to the frame (20) through a plurality of bolts spaced apart along the circumferential direction of the fixed scroll (30).

[0049] The fixed scroll (30) may include a wrap receiving portion (31), a flange portion (32) protruding radially along the perimeter of the wrap receiving portion (31), and a fixed wrap (34) provided in the internal space (33) of the wrap receiving portion (31). The wrap receiving portion (31) may have a container shape with at least a portion of its lower surface open. The internal space (33) may refer to the space inside the open lower surface of the wrap receiving portion (31).

[0050] The fixed wrap (34) may be formed by extending vertically downward from the upper surface (33a) of the internal space (33) of the wrap receiving portion (31). The fixed wrap (34) may be formed to have a spiral shape when viewed from below the fixed scroll (30). The height of the fixed wrap (34) may be provided at a constant level along the spiral shape. The height of the fixed wrap (34) may refer to the length in the vertical direction of the fixed wrap (34). The fixed wrap (34) may form a compression chamber (35) together with the pivot wrap (42) to be described later.

[0051] The pivot scroll (40) may be positioned below the fixed scroll (30). The pivot scroll (40) may be positioned above the frame (20). The pivot scroll (40) may be positioned in the space formed between the frame (20) and the fixed scroll (30). The pivot scroll (40) may be arranged to pivot relative to the frame (20) and the fixed scroll (30). The pivot scroll (40) may be supported by the thrust surface (22) of the frame (20).

[0052] The rotating scroll (40) may include a disc-shaped plate (41), a rotating wrap (42) formed protruding from one side of the plate (41), and a boss portion (43) formed protruding from the other side of the plate (41).

[0053] The plate (41) may be formed in the shape of a disc. The upper surface of the plate (41), which is provided to contact the fixed wrap (34) of the fixed scroll (30), may be formed as a mirror surface to minimize friction with the fixed wrap (34).

[0054] The pivot wrap (42) may be formed by extending vertically upward from the upper surface of the plate (41) or protruding upward. The pivot wrap (42) may be formed in a spiral shape. The pivot wrap (42) may be formed to have a spiral shape when viewed from above the pivot scroll (40). The height of the pivot wrap (42) may be provided at a constant level along the spiral shape. The height of the pivot wrap (42) may refer to the length in the vertical direction of the pivot wrap (42). The pivot wrap (42) may be formed to interlock with the fixed wrap (34). The upper surface of the plate (41), the pivot wrap (42), the fixed wrap (34), and the internal space (33) of the fixed scroll (30) may form a compression chamber (35). The plate (41) forming the compression chamber (35), the pivoting wrap (42), the fixed wrap (34), and the internal space (33) are collectively referred to as the compression section.

[0055] The fixed wrap (34) and the rotating wrap (42) can be accommodated in the wrap receiving portion (31) of the fixed scroll (30). In the internal space (33) of the wrap receiving portion (31), the fixed wrap (34) of the fixed scroll (30) and the rotating wrap (42) of the rotating scroll (40) can be engaged to form a compression chamber (35). The compression chamber (35) can be configured so that its volume gradually decreases due to the rotating movement of the rotating scroll (40). As a result, the refrigerant introduced into the compression chamber (35) can be compressed by the rotating movement of the rotating scroll (40).

[0056] The boss portion (43) may be formed by extending vertically downward from the lower surface of the plate (41) or protruding. The boss portion (43) may be formed at the center of the lower surface of the plate (41). A shaft (50) may be inserted into the internal space (43a) of the boss portion (43). More specifically, an eccentric portion (52) of the shaft (50) may be inserted into the internal space (43a) of the boss portion (43).

[0057] The lower surface of the plate (41) on which the boss portion (43) is formed can be supported by the thrust surface (22) of the frame (20). The lower surface of the plate (41) supported by the thrust surface (22) of the frame (20) can be formed as a mirror surface to minimize friction with the thrust surface (22).

[0058] The interlocked fixed wrap (34) and the pivoting wrap (42) can form a plurality of compression pockets. When the pivoting scroll (40) pivots, the plurality of compression pockets move toward the center of the wrap receiving portion (31), compressing the refrigerant introduced into the inlet of the fixed scroll (30) and discharging it through the outlet of the fixed scroll (30).

[0059] An Oldham ring (44) may be provided between the rotating scroll (40) and the frame (20) to prevent the rotating scroll (40) from rotating. The Oldham ring (44) prevents the rotating scroll (40) from rotating, thereby allowing the rotating scroll (40) to rotate relative to the frame (20) without rotating.

[0060] The pivot scroll (40) can pivot by means of a shaft (50). An eccentric portion (52) formed at the upper end of the shaft (50) can be coupled to a boss portion (43) of the pivot scroll (40). As the shaft (50) rotates by means of a drive motor (70), the pivot scroll (40) can pivot.

[0061] The drive motor (70) may include a stator (71) and a rotor (72). The stator (71) may be fixed to the inner surface of the housing (10). The rotor (72) may be rotatably provided inside the stator (71).

[0062] The shaft (50) can be inserted into the hollow of the rotor (72) such that at least a portion of the shaft (50) penetrates the rotor (72). The shaft (50) can be coupled to the rotor (72) to rotate together with the rotor (72). When the rotor (72) rotates by operating the drive motor (70), the shaft (50) can rotate together with the rotor (72).

[0063] The shaft (50) may include a main shaft (51) that is fitted into the rotor (72) and an eccentric part (52) provided on the upper part of the main shaft (51). The main shaft (51) of the shaft (50) may be fitted into the rotor (72) to rotate together with the rotor (72). The central axis of the main shaft (51) and the central axis of the eccentric part (52) may be spaced apart from each other. The central axis of the eccentric part (52) may be spaced horizontally from the central axis of the main shaft (51).

[0064] A bearing member (60) may be inserted into the main shaft (51) of the shaft (50). The bearing member (60) may be coupled to the upper side of the main shaft (51). The bearing member (60) may be coupled to the main shaft (51) of the shaft (50) so as to rotate together with the shaft (50).

[0065] The bearing member (60) may be provided to be rotatable inside the frame hole (21). A first bearing (73) that rotatably supports the bearing member (60) may be provided inside the frame hole (21). The first bearing (73) may be installed inside the frame hole (21) to rotatably support the bearing member (60). By means of the first bearing (73), the bearing member (60) and the shaft (50) may rotate relative to the frame (20) inside the frame hole (21). For example, the first bearing (73) may include bearing metal.

[0066] The bearing member (60) may include a boss receiving groove (61) provided to accommodate a boss portion (43). Within the boss receiving groove (61), the boss portion (43) of the pivot scroll (40) may pivot together with the eccentric portion (52) of the shaft (50). The boss receiving groove (61) may accommodate oil. The boss receiving groove (61) may be provided to accommodate oil supplied through an oil passage (53) provided in the shaft (50). The boss receiving groove (61) may be referred to as an oil pocket.

[0067] The eccentric portion (52) may form the upper portion of the shaft (50). The eccentric portion (52) may be formed by protruding vertically upward from the upper surface of the main shaft (51). The eccentric portion (52) may be inserted into the boss portion (43) of the pivot scroll (40). A second bearing (74) may be installed between the eccentric portion (52) of the shaft (50) and the boss portion (43) of the pivot scroll (40). The second bearing (74) may be provided between the eccentric portion (52) and the boss portion (43) to rotatably support the eccentric portion (52). The second bearing (74) may support the eccentric portion (52) to rotate relative to the boss portion (43) inside the boss portion (43). For example, the second bearing (74) may include bearing metal.

[0068] The lower portion of the main shaft (51) can be rotatably supported by a lower frame (76) installed in the housing (10). The lower frame (76) can be fixed to the lower part inside the housing (10). The lower frame (76) can be spaced apart from the frame (20) in an up-and-down or vertical direction. The lower frame (76) can be positioned below the frame (20) so as to be spaced apart from the frame (20).

[0069] A lower frame hole (76a) may be formed in the lower frame (76) to allow the main shaft (51) of the shaft (50) to be inserted. The lower frame hole (76a) may be formed by penetrating the center of the lower frame (76) in a vertical direction. A third bearing (75) may be provided inside the lower frame hole (76a) to rotatably support the lower part of the main shaft (51). The third bearing (75) may rotatably support the main shaft (51) so that the main shaft (51) rotates relative to the lower frame (76) within the lower frame hole (76a). For example, the third bearing (75) may include bearing metal.

[0070] The upper part of the shaft (50) can be supported by the frame (20), and the lower part of the shaft (50) can be supported by the lower frame (76). More specifically, the bearing member (60) coupled to the upper part of the main shaft (51) can be rotatably supported by a first bearing (73) provided inside the frame hole (21), and the lower part of the main shaft (51) can be rotatably supported by a third bearing (75) provided inside the lower frame hole (76a).

[0071] The shaft (50) may include an oil passage (53) that supplies oil from the sump (17) to at least one of the first bearing (73), the second bearing (74), and the third bearing (75). The oil passage (53) may be formed by penetrating the shaft (50) in the direction in which the shaft (50) extends. The direction in which the shaft (50) extends may point in the up-down direction, the vertical direction, or the direction of the rotation axis of the shaft (50).

[0072] The oil passage (53) can be formed by penetrating the main shaft (51) and the eccentric portion (52) of the shaft (50). An outlet (54) of the oil passage (53) can be formed on the top or upper surface of the eccentric portion (52). An inlet (55) of the oil passage (53) can be formed on the bottom or lower surface of the main shaft (51).

[0073] In the oil channel (53), oil can move from bottom to top due to a pressure difference. Thus, oil from the sump (17) can flow into the oil channel (53) through an inlet (55) located at the bottom of the oil channel (53), move upward, and then be discharged through an outlet (54) located at the top of the oil channel (53).

[0074] A portion of the oil moving upward along the oil passage (53) can be supplied to the third bearing (75). The shaft (50) may include a third bearing passage (53c) that supplies at least a portion of the oil from the oil passage (53) to the third bearing (75).

[0075] The third bearing passage (53c) can connect the oil passage (53) and the side of the main shaft (51) located inside the third bearing (75). Through the third bearing passage (53c), a portion of the oil in the oil passage (53) can be discharged to the side of the main shaft (51) located inside the third bearing (75). Accordingly, oil can be supplied to the third bearing (75).

[0076] A portion of the oil moving upward along the oil passage (53) may be supplied to the second bearing (74). The shaft (50) may include a second bearing passage (53b) that supplies at least a portion of the oil of the oil passage (53) to the second bearing (74).

[0077] The second bearing passage (53b) can connect the oil passage (53) and the side of the eccentric portion (52) located on the inner side of the second bearing (74). Accordingly, the second bearing passage (53b) may include a second through hole (52a, FIG. 5) formed on the side of the eccentric portion (52). Through the second bearing passage (53b), a portion of the oil in the oil passage (53) can be discharged to the side of the eccentric portion (52) located on the inner side of the second bearing (74). Accordingly, oil can be supplied to the second bearing (74).

[0078] FIG. 5 illustrates a partial configuration of a scroll compressor according to one embodiment.

[0079] Referring to FIG. 5, a bearing member (60) can be coupled to the upper side of a shaft (50). The bearing member (60) can be coupled to the main axis (51) of the shaft (50) to rotate together with the shaft (50). The bearing member (60) can be provided to have a tolerance with the main axis (51) of the shaft (50). The bearing member (60) can be coupled to the main axis (51) of the shaft (50) by a press fitting or welding method. In this case, when the bearing member (60) is pressed into the main axis (51) of the shaft (50), a thermal press fitting or press fitting method may be used.

[0080] Deformation may occur in the bearing member (60) during the process of welding or press-fitting the bearing member (60). For example, the press-fit part (63) may form a press-fit surface (63a, FIG. 6) with the main shaft (51) during the process of press-fitting into the shaft (50). As the press-fit surface (63a, FIG. 6) is formed, the tolerance between the inner surface of the press-fit part (63) and the outer surface of the main shaft (51) may be eliminated. That is, the inner surface of the press-fit part (63) or the outer surface of the main shaft (51) may be deformed. Accordingly, the bearing member (60) may separately provide a press-fit part (63) for coupling with the shaft (50) and a bearing part (62) supported by the bearing.

[0081] The bearing member (60) may include a bearing portion (62), a boss receiving groove (61), a press-fit portion (63), and a counterweight (64). The bearing portion (62) may be provided separately from the press-fit portion (63) to reduce the effect of deformation occurring during the press-fitting process of the bearing member (60). For example, the bearing portion (62) and the press-fit portion (63) may be provided spaced apart in the vertical direction.

[0082] The bearing portion (62) may be provided on the upper part of the main shaft (51). The bearing portion (62) may be provided in a shape that protrudes vertically upward relative to the upper surface of the main shaft (51). The protruding length of the bearing portion (62) may be close to the protruding length of the eccentric portion (52). The protruding length of the bearing portion (62) may refer to the protruding length from the upper surface of the main shaft (51). That is, it may refer to the height of the inner surface of the bearing portion (62) forming the boss receiving groove (61).

[0083] The protruding length of the bearing portion (62) can be arranged to be slightly smaller than the protruding length of the eccentric portion (52). Accordingly, the eccentric portion (52) and the bearing portion (62) can be arranged to overlap by the protruding length of the bearing portion (62) in the radial direction of the shaft (50). Accordingly, the second bearing (74, FIG. 6) that rotatably supports the eccentric portion (52) and the first bearing (73, FIG. 6) that rotatably supports the bearing portion (62) can be positioned to overlap by the protruding length of the bearing portion (62) in the radial direction of the shaft (50). That is, the first bearing (73, FIG. 6) and the second bearing (74, FIG. 6) can have a portion of the first bearing (73, FIG. 6) and the second bearing (74, FIG. 6) overlap in the radial direction of the shaft (50). Accordingly, the oil passage for supplying oil to the first bearing (73, FIG. 6) provided in the eccentric portion (52) of the shaft (50) may be provided to pass through the second bearing (74, FIG. 6).

[0084] The bearing portion (62) may be provided such that the thickness of the outer surface is greater than the thickness of the inner surface. That is, the lower end of the outer surface of the bearing portion (62) may be located below the upper surface of the main shaft (51). Accordingly, the first bearing passage (53a) may be provided below the upper surface of the main shaft (51) to supply oil to the first bearing (73). In other words, the passage for supplying oil to the first bearing (73, FIG. 6) provided on the main shaft (51) of the shaft (50) may be provided so as not to pass through the second bearing (74, FIG. 6). That is, it may be provided to bypass the second bearing (74, FIG. 6). In other words, it may be directly connected to the first bearing (73, FIG. 6). A detailed description regarding the shape of the passage for supplying oil to the first bearing (73, FIG. 6) will be provided later through other drawings below.

[0085] One side of the bearing portion (62) is supported by the first bearing (73), and a boss receiving groove (61) may be formed on the other side. The side of the bearing portion (62) supported by the first bearing (73) may be the outer surface of the bearing portion (62). That is, the bearing member (60) may include a boss receiving groove (61) formed on the inner side of the bearing portion (62).

[0086] The boss receiving groove (61) may be provided on the upper surface of the main shaft (51). The boss receiving groove (61) may be provided between the eccentric part (52) and the bearing part (62). That is, the boss receiving groove (61) may be formed by being surrounded by the upper surface of the main shaft (51), the outer surface of the eccentric part (52), and the inner surface of the bearing part (62).

[0087] The boss receiving groove (61) can store oil supplied through the oil passage (53). The bearing portion (62) may be provided with a third through hole (62a) penetrating the side of the bearing portion (62) so that the oil stored in the boss receiving groove (61) can be supplied to the first bearing (73) on the outside of the bearing portion (62). The third through hole (62a) may be provided at a position having a predetermined height from the upper surface of the main shaft (51). That is, the oil stored in the boss receiving groove (61) can be supplied to the first bearing (73) through the third through hole (62a) after a certain amount has been stored. The third through hole (62a) and the boss receiving groove (61) can form a first bearing supply passage (61a).

[0088] A D-cut portion (79) may be formed on the outer surface of the bearing portion (62). The D-cut portion (79) may be formed by the outer surface of the bearing portion (62) being recessed. For example, the D-cut portion (79) may be formed by cutting the outer surface of the bearing portion (62). The D-cut portion (79) may be provided at one end of the third through hole (62a). That is, the D-cut portion (79) may be located between the third through hole (62a) and the inner surface of the first bearing (73). Oil flowing from the boss receiving groove (61) into the third through hole (62a) may be stored in the D-cut portion (79). The oil stored in the D-cut portion (79) may be supplied between the inner surface of the first bearing (73) and the outer surface of the bearing portion (62). The boss receiving groove (61) and the third through hole (62a) may form a part of the first bearing passage (53a, FIG. 6). That is, the first bearing passage (53a, FIG. 6) may include a first bearing supply passage (61a). However, the relationship between the first bearing passage (53a, FIG. 6) and the first bearing supply passage (61a) is not limited to this embodiment and may be provided separately to supply oil to the first bearing.

[0089] A counterweight (64) may be provided between the bearing portion (62) and the press-fit portion (63). The counterweight (64) may be provided to compensate for the eccentricity of the center axis of the shaft (50) caused by the eccentric portion (52) provided on the upper part of the shaft (50). That is, the counterweight (64) may be positioned on the opposite side of the direction in which the eccentric portion (52) is eccentric. Accordingly, vibrations generated during the rotation of the shaft (50) may be reduced.

[0090] An eccentric portion (52) may be provided on the upper part of the shaft (50). In other words, the eccentric portion (52) may be provided on the upper surface of the main shaft (51). An oil passage (53) may extend to the upper end of the eccentric portion (52). That is, an outlet (54) of the oil passage (53) may be formed on the upper surface of the eccentric portion (52).

[0091] Oil that has moved upward along the oil passage (53) can be discharged through the outlet (54). A portion of the oil that has moved upward along the oil passage (53) can be supplied to the second bearing (74). The eccentric portion (52) may include a second bearing passage (53b, FIG. 3) that supplies at least a portion of the oil from the oil passage (53) to the second bearing (74).

[0092] The eccentric portion (52) may include a second through hole (52a) formed to penetrate the side of the eccentric portion (52) so that oil moving upward from the oil passage (53) can be supplied to the second bearing (74). The second through hole (52a) may be provided on the side of the eccentric portion (52) and may be provided at a height corresponding to half the protruding length of the eccentric portion (52). That is, the second through hole (52a) may be provided at the midpoint of the second bearing (74). Accordingly, the oil supplied through the second through hole (52a) is supplied to the midpoint of the inner surface of the second bearing (74), moves upward and downward, and can be supplied to the second bearing (74).

[0093] A D-cut portion (79) may be formed on the outer surface of the eccentric portion (52). The D-cut portion (79) may be formed by the outer surface of the eccentric portion (52) being recessed. For example, the D-cut portion (79) may be formed by cutting the outer surface of the eccentric portion (52). The D-cut portion (79) may be provided at one end of the second through hole (52a). That is, the D-cut portion (79) may be located between the second through hole (52a) and the inner surface of the second bearing (74). Oil flowing from the oil passage (53) into the second through hole (52a) may be stored in the D-cut portion (79). The oil stored in the D-cut portion (79) may be supplied between the inner surface of the second bearing (74) and the outer surface of the eccentric portion (52). Accordingly, the second bearing passage (53b) may include a second through hole (52a).

[0094] Meanwhile, the oil supplied to the second bearing (74) can form an oil film between the eccentric portion (52) and the second bearing (74) to support the load applied to the second bearing (74). A portion of the oil forming the oil film can be discharged into a boss receiving groove (61) provided on the lower side of the second bearing (74). In other words, a portion of the oil supplied to the second bearing (74) can be received in the boss receiving groove (61) and then supplied to the first bearing (73). Accordingly, the first through hole (50a) can form a part of the first bearing passage (53a). A detailed description of the first bearing passage (53a, FIG. 6), the first bearing supply passage (61a), and the second bearing passage (53b, FIG. 3) will be described later through other drawings below.

[0095] FIG. 6 illustrates an enlarged view of the area corresponding to B in FIG. 3 in a scroll compressor according to one embodiment. FIG. 7 is a rear perspective view of a part of FIG. 6. FIG. 8 illustrates an enlarged view of the area corresponding to B in FIG. 3 in a scroll compressor according to one embodiment. FIG. 9 is a perspective view of a part of FIG. 8.

[0096] In the following description, for the convenience of explanation, configurations that are substantially identical or similar to those described with reference to FIG. 5 may be omitted or briefly described.

[0097] Referring to FIGS. 5 through 9, the first bearing passage (53a) can supply oil stored in the boss receiving groove (61) to the first bearing through the third through hole (62a). At this time, the oil stored in the boss receiving groove (61) may include oil introduced through the first through hole (50a) and the second through hole (52a). In other words, the boss receiving groove (61) can accommodate at least a portion of the oil supplied to the second bearing (74) and oil supplied directly from the oil passage (53) that is not supplied to the second bearing (74). That is, the boss receiving groove (61) can accommodate a portion of the oil introduced through the second bearing passage (53b) and oil introduced through the first bearing passage (53a). Accordingly, the amount of oil passing through the first bearing passage (53a) can increase as it passes through the boss receiving groove (61). In other words, the boss receiving groove (61) can store a sufficient amount of oil to be supplied to the first bearing (73).

[0098] The first bearing passage (53a) may include a first through hole (50a), an oil groove (59), a boss receiving groove (61), and a third through hole (62a).

[0099] The first through hole (50a) may be formed to penetrate the side of the main axis (51) of the shaft (50). The first through hole (50a) may be provided to be connected to the bearing member (60). At this time, the first through hole (50a) may be provided at an approximate mid-height position of the bearing member (60). In other words, the first through hole (50a) may be formed between the upper part of the bearing member (60) where the bearing portion (62) is formed and the lower part of the bearing member (60) where the press-fit portion (63) is formed. Accordingly, the first through hole (50a) may be formed at a position higher than the position where the press-fit surface (63a) is formed on the main axis (51) of the shaft (50). However, it is not limited to this embodiment, and the first through hole (50a) may be provided on the press-fit surface (63a).

[0100] An oil groove (59) may be formed at one end of the first through hole (50a). The oil groove (59) may be provided between the main shaft (51) of the shaft (50) and the bearing member (60). Accordingly, oil flowing from the oil passage (53) into the first through hole (50a) can flow between the main shaft (51) of the shaft (50) and the bearing member (60). That is, oil flowing into the first through hole (50a) can be stored in the oil groove (59).

[0101] The oil groove (59) may be provided to extend axially along the side of the shaft (50). The oil groove (59) may be provided such that one axial side is open and the other axial side is closed. Accordingly, the oil received in the oil groove (59) can form a flow supplied in one direction.

[0102] The oil groove (59) can be extended upward and connected to the boss receiving groove (61). In other words, the oil groove (59) can be provided so that its upper side is open, and an opening of the oil groove (59) can be provided on the lower surface of the boss receiving groove (61). Accordingly, oil flowing into the first through hole (50a) can be supplied to the boss receiving groove (61) along the oil groove (59) provided between the shaft (50) and the bearing member (60). In other words, the first through hole (50a) and the oil groove (59) can form a part of the first bearing passage.

[0103] The oil groove (59) may be formed in the shape of a groove extending in the axial direction. The oil groove (59) may be formed on the inner surface of the bearing member (60). For example, the oil groove (59) may be formed by recessing the inner surface of the bearing member (60). In this case, the oil groove (59) may be formed by cutting away the inner surface of the bearing member (60). However, the shape of the oil groove (59) is not limited to this embodiment.

[0104] The oil groove (59) may be formed on the outer surface of the main shaft (51) of the shaft (50). For example, the oil groove (59) may be formed by recessing the outer surface of the shaft (50). In this case, the oil groove (59) may be formed by cutting the outer surface of the shaft (50). However, in addition to this embodiment, the oil groove (59) may be provided in various shapes that form a gap between the shaft (50) and the bearing member (60) to receive oil introduced through the first through hole (50a) and guide the received oil to the boss receiving groove (61).

[0105] The oil flowing into the boss receiving groove (61) through the oil groove (59) can be mixed with the oil flowing into the boss receiving groove (61) through the second bearing passage (53b). At this time, the amount of oil flowing into the boss receiving groove (61) through the oil groove (59) can be arranged to be greater than the amount of oil flowing into the boss receiving groove (61) through the second bearing passage (53b).

[0106] A through hole may be formed in the shaft (50) to form a first bearing passage (53a) and a second bearing passage (53b), respectively. A first through hole (50a) included in the first bearing passage (53a) and a second through hole (52a) included in the second bearing passage (53b) may be formed in the shaft (50). The first through hole (50a) may be formed on the side of the main shaft (51), and the second through hole (52a) may be formed on the side of the eccentric part (52). In other words, the first through hole (50a) may be formed by penetrating the main shaft (51) of the shaft (50) in a radial direction, and the second through hole (52a) may be formed by penetrating the eccentric part (52) in a radial direction. At this time, the direction in which the first through hole (50a) is formed and the direction in which the second through hole (52a) is formed may be arranged to be different from each other.

[0107] FIG. 10 shows an enlarged view of the area corresponding to B in FIG. 3 in a scroll compressor according to one embodiment. FIG. 11 is a front perspective view of a part of FIG. 10.

[0108] In the following description, for the convenience of explanation, configurations that are substantially identical or similar to those described with reference to FIG. 5 may be omitted or briefly described.

[0109] Referring to FIGS. 5, 10, and 11, the first bearing passage (53a) can supply oil flowing in the oil passage (53) to the first bearing (73) through the first through hole (50a). At this time, the first through hole (50a) may be provided on the lower side of the boss receiving groove (61). In other words, the first through hole (50a) may be provided separately from the boss receiving groove (61). That is, only oil introduced through the second bearing passage (53b) can be stored in the boss receiving groove (61).

[0110] The first bearing passage (53a) may include a first through hole (50a). The first through hole (50a) may be extended to communicate with the bearing member (60). In other words, the first through hole (50a) may be formed by penetrating the shaft (50) and the bearing member (60).

[0111] The first bearing passage (53a) supplies oil from the oil passage (53) to the first bearing (73) through the first through hole (50a) formed in the radial direction of the shaft (50), and accordingly, the position where the first through hole (50a) is formed can be arranged to pass through the first bearing (73) when extended radially from the inlet of the first through hole (50a). In other words, the position of the first through hole (50a) can be positioned higher than the bottom of the first bearing (73). That is, when the first through hole (50a) is formed below the boss receiving groove (61), it can be arranged to be close to the lower surface of the boss receiving groove (61).

[0112] The first through hole (50a) can be connected to the lower part of the first bearing (73). Accordingly, oil passing through the first bearing passage (53a) can be supplied to the lower part of the first bearing (73). However, the oil supplied through the bearing passage (53a) can be stored in the D-cut section (79) provided between the first bearing (73) and the bearing section (62) and supplied evenly to the entire first bearing (73).

[0113] Multiple oil passages may be provided for supplying oil to the first bearing (73). A first bearing supply passage (61a) may be provided above the first bearing passage (53a). The first bearing supply passage (61a) may include a boss receiving groove (61) and a third through hole (62a).

[0114] The first bearing supply path (61a) can supply oil stored in the boss receiving groove (61) to the first bearing (73). At this time, the oil stored in the boss receiving groove (61) may include oil discharged to the lower side of the second bearing (74). That is, the oil received in the boss receiving groove (61) may include at least a portion of the oil introduced from the oil path (53) through the second bearing path (53b). The oil received in the boss receiving groove (61) may include oil supplied to the second bearing (74).

[0115] Accordingly, oil introduced through the first bearing passage (53a) and the first bearing supply passage (61a) can be supplied to the first bearing (73), respectively. The first bearing passage (53a) and the first bearing supply passage (61a) can be provided separately. In this case, the amount of oil supplied through the first bearing passage (53a) may be greater than the amount of oil supplied through the first bearing supply passage (61a).

[0116] The first bearing passage (53a) may include a first through hole (50a), and the first bearing supply passage (61a) may include a third through hole (62a). In this case, the first through hole (50a) and the third through hole (62a) may be arranged to have the same direction.

[0117] Accordingly, in the D-cut portion (79) formed on the outer surface of the bearing portion (62), the first through hole (50a) and the third through hole (62a) may be formed spaced apart in the vertical direction. Oil introduced through the first through hole (50a) and the third through hole (62a) into the D-cut portion (79) can be stored and supplied to the first bearing.

[0118] Meanwhile, the oil path can be defined based on the oil supplied to the first bearing (73). Referring to FIGS. 5 to 11, the scroll compressor (1) may include a second supply path through which oil is supplied to the first bearing via the second bearing, and a first supply path through which oil is supplied directly to the first bearing without passing through the second bearing.

[0119] At this time, the first bearing passage (53a) may be referred to as the first supply passage. Also, the second bearing passage (53b) and the first bearing supply passage (61a) may be collectively referred to as the second supply passage.

[0120] Accordingly, for the description of the first supply path and the second supply path, refer to the description of the first bearing path (53a), the second bearing path (53b), and the first bearing supply path (61a).

[0121] A scroll compressor (1) according to one embodiment comprises a housing (10), a frame (20) fixed to the inside of the housing (10), a fixed scroll (30) coupled to the frame (20) to be fixed to the inside of the housing (10), a pivoting scroll (40) provided to pivot relative to the fixed scroll (30) and including a boss portion (43), an eccentric portion (52) provided to be inserted into the boss portion (43) to transmit rotational force to the boss portion (43), a shaft (50) including an oil passage (53), a bearing member (60) coupled to the shaft (50) to rotate together with the shaft (50) and including a boss receiving groove (61) into which the boss portion (43) is inserted, a first bearing (73) provided between the frame (20) and the bearing member (60) to rotatably support the bearing member (60), and the boss portion (43) and the A second bearing (74) provided between the eccentric portions (52) to rotatably support the eccentric portions (52), comprising a second bearing (74) arranged such that at least a portion overlaps with the first bearing (73) in the radial direction of the first bearing (73), a first bearing passage (53a) that supplies oil from the oil passage (53) to the first bearing (73), and a second bearing passage (53b) that supplies oil from the oil passage (53) to the second bearing (74).

[0122] The first bearing passage (53a) can supply oil stored in the boss receiving groove (61) to the first bearing (73).

[0123] The first bearing passage (53a) supplies oil from the oil passage (53) to the boss receiving groove (61), and the boss receiving groove (61) may be provided to receive oil supplied to the second bearing (74) through the second bearing passage (53b) and oil introduced through the first bearing passage (53a).

[0124] The second bearing passage (53b) includes a second through hole (52a) that penetrates the eccentric portion (52) in a radial direction, and oil passing through the second through hole (52a) is supplied between the eccentric portion (52) and the second bearing (74), and a portion of the oil supplied to the second bearing (74) can be discharged into the boss receiving groove (61).

[0125] The oil flowing into the first bearing passage (53a) can be arranged to pass between the shaft (50) and the bearing member (60) and be guided to the boss receiving groove (61).

[0126] The first bearing passage (53a) may include a first through hole (50a) that penetrates the side of the shaft (50) in a radial direction and an oil groove (59) connected to one end of the first through hole (50a) and provided between the shaft (50) and the bearing member (60).

[0127] The oil groove (59) may be opened upward so that oil introduced through the first through hole (50a) is guided to the boss receiving groove (61).

[0128] The above oil groove (59) can be formed by indenting the inner surface of the bearing member (60).

[0129] The above oil groove (59) can be formed by indenting the outer surface of the shaft (50).

[0130] The first bearing passage (53a) can supply oil from the oil passage (53) through the shaft (50) and the bearing member (60) to the first bearing (73).

[0131] The first bearing passage (53a) may include a third through hole (62a) that passes under the boss receiving groove (61) and penetrates the shaft (50) and the bearing member (60).

[0132] It further includes a first bearing supply channel (61a) arranged to supply oil stored in the boss receiving groove (61) to the first bearing (73), and the first bearing supply channel (61a) may be arranged so that oil discharged to the lower side of the second bearing (74) is supplied to the first bearing (73).

[0133] The bearing member (60) includes a D-cut portion (79) formed by cutting the outer surface, and the second supply passage may be connected to the D-cut portion (79) to communicate with the first bearing (73) and the oil passage (53).

[0134] The bearing member (60) includes a D-cut portion (79) formed by cutting the outer surface, and the first bearing passage (53a) and the first bearing supply passage (61a) may each be extended to the D-cut portion (79) to communicate with the first bearing (73) and the oil passage (53).

[0135] The first bearing passage (53a) may be configured to supply a larger amount of oil to the first bearing (73) than the first bearing supply passage (61a).

[0136] A scroll compressor (1) according to one embodiment comprises a housing (10), a frame (20) fixed to the inside of the housing (10), a fixed scroll (30) coupled to the frame (20) to be fixed to the inside of the housing (10), a pivoting scroll (40) provided to pivot relative to the fixed scroll (30) and including a boss portion (43), an eccentric portion (52) provided to be inserted into the boss portion (43) to transmit rotational force to the boss portion (43), a shaft (50) including an oil passage (53), a bearing member (60) coupled to the shaft (50) to rotate together with the shaft (50) and including a boss receiving groove (61) into which the boss portion (43) is inserted, a first bearing (73) provided between the frame (20) and the bearing member (60) to rotatably support the bearing member (60), and the boss portion (43) and the A second bearing (74) provided between the eccentric portions (52) to rotatably support the eccentric portions (52), comprising: a second bearing (74) arranged such that at least a portion overlaps with the first bearing (73) in the radial direction of the first bearing (73); a first oil supply passage provided to be connected to the first bearing (73) by bypassing the second bearing (74) from the oil passage (53); and a second oil supply passage provided to supply oil from the oil passage (53) to the first bearing (73) via the second bearing (74).

[0137] The second oil supply path is provided to be guided through the second bearing (74) to the boss receiving groove (61), and the first oil supply path can be provided to be guided through the space between the shaft (50) and the bearing member (60) to the boss receiving groove (61).

[0138] The oil flowing into the second oil supply channel and the oil flowing into the first oil supply channel are mixed in the boss receiving groove (61), and in the boss receiving groove (61), the first oil supply channel is integrated into the second oil supply channel, and the second oil supply channel can be arranged so that the oil stored in the boss receiving groove (61) is supplied to the first bearing (73).

[0139] The second oil supply path is provided so that oil stored in the boss receiving groove (61) is guided to the first bearing (73), and the first oil supply path can be provided to supply oil to the first bearing (73) by passing through the shaft (50) and the bearing member (60) and passing under the boss receiving groove (61).

[0140] The second oil supply path and the first oil supply path may be arranged to supply oil to the first bearing (73) through separate paths.

[0141] According to the concept of the present invention, an additional oil passage is formed to supply oil to the first bearing of a scroll compressor, thereby satisfying the required oil supply amount of the first bearing.

[0142] According to the concept of the present invention, the amount of oil supplied to the first bearing can be increased while maintaining the shape of the bearing member of the scroll compressor.

[0143] According to the concept of the present invention, the amount of lubrication supplied to the first bearing of the scroll compressor is increased, and the load-bearing capacity of the first bearing can be improved.

[0144] Specific embodiments have been illustrated and described above. However, the invention is not limited to the embodiments described above, and those skilled in the art may make various modifications without departing from the essence of the technical concept of the invention as described in the following claims.

Claims

1. Housing; A frame fixed to the inside of the above housing; A fixed scroll coupled to the frame so as to be fixed to the inside of the housing; A pivot scroll arranged to pivot relative to the above fixed scroll and including a boss portion; A shaft including an eccentric portion inserted into the boss portion and configured to transmit rotational force to the boss portion, and an oil passage; A bearing member coupled to the shaft to rotate together with the shaft, and comprising a boss receiving groove into which the boss portion is inserted; A first bearing provided between the frame and the bearing member to rotatably support the bearing member; A second bearing provided between the boss portion and the eccentric portion to rotatably support the eccentric portion, wherein the second bearing is arranged such that at least a portion overlaps with the first bearing in the radial direction of the first bearing; A first bearing passage supplying oil from the above oil passage to the first bearing; and A scroll compressor comprising: a second bearing passage that supplies oil from the above oil passage to the second bearing.

2. In Paragraph 1, The above first bearing path is a scroll compressor that supplies oil stored in the boss receiving groove to the first bearing.

3. In Paragraph 2, The first bearing passage above supplies oil from the oil passage to the boss receiving groove, and The above boss receiving groove is a scroll compressor provided to receive oil supplied to the second bearing through the second bearing passage and oil introduced through the first bearing passage.

4. In Paragraph 3, The second bearing passage includes a second through hole that penetrates the eccentric portion in a radial direction, and A scroll compressor configured such that oil passing through the second through hole is supplied between the eccentric part and the second bearing, and a portion of the oil supplied to the second bearing is discharged into the boss receiving groove.

5. In Paragraph 3, A scroll compressor configured such that oil flowing into the first bearing passage passes between the shaft and the bearing member and is guided to the boss receiving groove.

6. In Paragraph 5, A scroll compressor comprising a first bearing passage that penetrates the side of the shaft in a radial direction and a first through hole connected to one end of the first through hole and an oil groove provided between the shaft and the bearing member.

7. In Paragraph 6, A scroll compressor in which the above oil groove is open upward so that oil introduced through the first through hole is guided to the boss receiving groove.

8. In Paragraph 7, The above oil groove is a scroll compressor formed by the inner surface of the bearing member being recessed.

9. In Paragraph 7, The above oil groove is a scroll compressor formed by the outer surface of the shaft being recessed.

10. In Paragraph 1, The first bearing passage above supplies oil from the oil passage to the first bearing through the shaft and the bearing member, in a scroll compressor.

11. In Paragraph 10, A scroll compressor comprising a first through hole that is provided to pass below the boss receiving groove and penetrate the shaft and the bearing member.

12. In Paragraph 11, It further includes a first bearing supply path arranged to supply oil stored in the boss receiving groove to the first bearing; and A scroll compressor in which the first bearing supply path is arranged so that oil discharged to the lower side of the second bearing is supplied to the first bearing.

13. In Paragraph 3, The above bearing member includes a D-cut portion formed by cutting the outer surface, and A scroll compressor in which the first bearing passage is connected to the D-cut section and arranged to communicate the first bearing and the oil passage.

14. In Paragraph 12, The above bearing member includes a D-cut portion formed by cutting the outer surface, and A scroll compressor in which the first bearing passage and the first bearing supply passage are each extended to the D-cut section to communicate with the first bearing and the oil passage.

15. In Paragraph 12, A scroll compressor in which the first bearing passage is arranged to supply a larger amount of oil to the first bearing than the first bearing supply passage.

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