JP2008101599A - Rotation preventing member, scroll compressor, and movable scroll component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a life of a surface film applied to a wall of a key groove formed in a movable scroll is longer than conventional. <P>SOLUTION: A rotation preventing members 39, 139, 239 comprise annular bodies 39c, 239c, a pair of first key parts 39a, 239b, and a pair of second key parts 39b, 139b, 239a. The first key parts comprise a pair of first surfaces P1, P23 perpendicular to radial direction of a main body and a pair of second surfaces P2, P24 including an axial direction and an radial direction of the body. The second key parts comprise a pair of third surfaces P3, P13, P21 parallel to the second surface and a pair of fourth surfaces P4, P14, P22 parallel to the first surfaces. A first corner part is formed out of the first surface and the second surface and a second corner part is formed out of the third surface and the fourth surface. At least the first corner part is chamfered. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a scroll compressor, a movable scroll component of the scroll compressor, and a rotation prevention member for preventing the rotation of the movable scroll component.

Usually, in order to ensure the slidability of the sliding component of the scroll compressor, the sliding component is subjected to a surface coating forming process such as rubrite treatment (for example, see Patent Document 1).
JP 58-57002 A

  By the way, some refrigeration apparatuses for refrigerated containers and refrigerated containers are equipped with a scroll compressor. Normally, such a scroll compressor is installed so that it is in a vertical orientation during storage and transportation of the container, that is, the crankshaft is along the vertical direction and the movable scroll is arranged on the electric motor. Often done. In such a case, if the refrigerated container or the refrigerated container is not used for a long time, the refrigerant may repeatedly evaporate and condense in the scroll compressor due to a change in the outside air temperature. Then, especially in a low-pressure dome type scroll compressor, the lubricating oil in the vicinity of the key groove for fitting the rotation preventing member provided on the movable scroll is often exhausted. When the scroll compressor is in such a state, if the surface coating of the movable scroll is completely lost, the key portion of the rotation preventing member and the wall that forms the key groove when the scroll compressor is started Seizure and abnormal wear are likely to occur.

  An object of the present invention is to make the life of the surface coating applied to the wall forming the keyway of the movable scroll longer than before.

  Further, another problem of the present invention is that even when the surface coating of the movable scroll is completely lost, the key portion of the rotation preventing member and the wall that forms the key groove when the scroll compressor is started up. It is to prevent seizure and abnormal wear from occurring.

  The anti-rotation member according to the first invention includes an annular main body, a pair of first key portions, and a pair of second key portions. The first key portions are opposed to each other across the axis of the main body, and extend to one side along the axial direction of the main body. And this 1st key part has a pair of 1st surface orthogonal to the radial direction of a main body, and a pair of 2nd surface containing an axial direction and a radial direction. The second key portion is parallel to the second surface and faces across a virtual surface including the shaft, and extends on the same side as the first key portion or on the opposite side of the first key portion along the axial direction. The second key portion has a pair of third surfaces parallel to the second surface and a pair of fourth surfaces parallel to the first surface. At least the first corner of the first corner formed from the first surface and the second surface and the second corner formed from the third surface and the fourth surface are chamfered.

  In this rotation preventing member, at least the first corner of the first corner and the second corner is chamfered. For this reason, if the first key part is fitted in the key groove of the movable scroll, the rotation preventing member can reduce the risk of scraping off the coating part applied to the wall forming the key groove of the movable scroll. it can. Therefore, this rotation prevention member can make the lifetime of the coating part provided on the wall forming the keyway of the movable scroll longer than before.

  A rotation preventing member according to a second aspect of the present invention is the rotation preventing member according to the first aspect of the present invention, and the second key portion extends to the opposite side of the first key portion along the axial direction.

  In this rotation preventing member, the second key portion extends to the opposite side of the first key portion along the axial direction. For this reason, if the first key part is fitted in the key groove of the movable scroll, the anti-rotation member makes the life of the coating part applied to the wall forming the key groove of the movable scroll longer than before. Can do. On the other hand, since the second key portion is directed vertically downward, the lubricating oil is hardly exhausted around the second key portion even when the refrigerated container or the refrigerated container is not used for a long period of time.

  A rotation prevention member according to a third aspect of the invention is the rotation prevention member according to the first aspect of the invention, and the second key portion extends to the same side as the first key portion along the axial direction. The first corner and the second corner are chamfered.

  In this rotation preventing member, the second key portion extends on the same side as the first key portion along the axial direction. Both corners of the first corner and the second corner are chamfered. For this reason, if either the first key part or the second key part is fitted in the key groove of the movable scroll, the rotation preventing member is formed by the coating part applied to the wall forming the key groove of the movable scroll. The lifetime can be made longer than before. On the other hand, the remaining key portions are fitted into key grooves formed in a fixed scroll or the like. In other words, this anti-rotation member is not only used for the life of the film part provided on the wall forming the key groove of the movable scroll but also when the film part is provided on the wall forming the key groove of the fixed scroll or the like. The life of the coating part can also be made longer than before.

  A rotation preventing member according to a fourth aspect of the present invention is the rotation preventing member according to any one of the first to third aspects, wherein the ratio of the chamfering length to the radial length of the second surface is 0.005 or more. 0.06 or less. When this ratio is less than 0.005, the effects of the present invention cannot be fully enjoyed. On the other hand, when this ratio is larger than 0.06, there is a disadvantage that the sliding surface becomes smaller and the surface pressure becomes larger and the probability of occurrence of seizure or abnormal wear increases.

  In this rotation preventing member, the ratio of the chamfering length to the radial length of the second surface is 0.005 or more and 0.06 or less. For this reason, with this rotation prevention member, it is possible to suppress the scraping of the coating portion of the movable scroll by the first key portion while substantially maintaining the surface pressure of the second surface against the wall forming the key groove of the movable scroll.

  A scroll compressor according to a fifth aspect of the present invention includes a movable scroll, a component, and a rotation prevention member. The movable scroll has a first plate portion, a first spiral portion, a pair of first grooves, and a coating portion. The first spiral part extends from the first plate surface of the first plate part while maintaining the spiral shape in a direction perpendicular to the first plate surface. The first groove is formed in a straight line on the first plate portion along the radial direction of the first spiral portion. The coating part covers the wall forming the first groove. The component is disposed in the vicinity of the movable scroll. The component has a second groove. The rotation preventing member has an annular main body, a pair of first key portions, and a pair of second key portions. The first key portion extends toward the movable scroll along the axial direction of the main body. The first key portion is inserted into the first groove. The second key portion extends to the component side along the axial direction. The second key portion is inserted into the second groove. At least the first key portion of the first key portion and the second key portion is chamfered at a corner portion formed by a sliding surface with respect to the wall forming the groove and a pair of fifth surfaces orthogonal to the sliding direction. ing.

  In this scroll compressor, at least at the first key portion of the first key portion and the second key portion, an angle formed by a sliding surface with respect to the wall forming the groove and a pair of fifth surfaces orthogonal to the sliding direction. The part is chamfered. For this reason, in this scroll compressor, it is possible to reduce the possibility that the anti-rotation member scrapes off the coating portion applied to the wall that forms the keyway of the movable scroll. Therefore, in this scroll compressor, the lifetime of the coating part applied to the wall forming the keyway of the movable scroll can be made longer than before.

  A scroll compressor according to a sixth aspect of the present invention is the scroll compressor according to the fifth aspect of the present invention, wherein the component is a housing disposed on the opposite side of the spiral portion of the movable scroll.

  In this scroll compressor, the component is a housing disposed on the opposite side of the spiral portion of the movable scroll. For this reason, in the scroll compressor, if the first key portion of the rotation preventing member is fitted in the first groove of the movable scroll, the life of the coating portion applied to the wall forming the first groove of the movable scroll is conventionally increased. Can be longer. On the other hand, since the second key portion is directed vertically downward, the lubricating oil is hardly exhausted around the second key portion even when the refrigerated container or the refrigerated container is not used for a long period of time.

  A scroll compressor according to a seventh aspect of the present invention is the scroll compressor according to the fifth aspect of the present invention, wherein the component is a fixed scroll and further has a coating part. The fixed scroll has an eleventh plate portion, a second spiral portion, and an enclosure wall portion. The second spiral portion extends while maintaining the spiral shape from the eleventh plate surface of the eleventh plate portion in a direction perpendicular to the eleventh plate surface. The second spiral part is meshed with the first spiral part. The surrounding wall portion is formed so as to surround the eleventh spiral portion in a direction perpendicular to the eleventh plate surface from the eleventh plate surface of the eleventh plate portion. The coating portion covers the wall that forms the second groove. A 2nd groove | channel is formed in the end surface on the opposite side to the 11th board part side among enclosure walls. And in the 1st key part and the 2nd key part, the corner | angular part formed from the sliding surface with respect to the wall which forms a groove | channel, and a pair of 5th surface orthogonal to a sliding direction is chamfered.

  In this scroll compressor, the component is a fixed scroll. And in the 1st key part and the 2nd key part, the corner | angular part formed from the sliding surface with respect to the wall which forms a groove | channel, and a pair of 5th surface orthogonal to a sliding direction is chamfered. For this reason, in this scroll compressor, if either the first key portion or the second key portion is fitted in the first groove of the movable scroll, the coating applied to the wall forming the first groove of the movable scroll The life of the part can be made longer than before. On the other hand, the remaining key portions are fitted into second grooves formed in the fixed scroll or the like. That is, in this scroll compressor, not only the life of the coating portion applied to the wall forming the first groove of the movable scroll but also the life of the coating portion applied to the wall forming the second groove of the fixed scroll is improved. Can be made longer than before.

  A scroll compressor according to an eighth aspect of the present invention is the scroll compressor according to the fifth aspect of the present invention, wherein the component is a fixed scroll and further has a coating part. The fixed scroll has an eleventh plate portion, a second spiral portion, an enclosure wall portion, and a flange portion. The second spiral portion extends while maintaining the spiral shape from the eleventh plate surface of the eleventh plate portion in a direction perpendicular to the eleventh plate surface. The second spiral part is meshed with the first spiral part. The surrounding wall portion is formed so as to surround the eleventh spiral portion in a direction perpendicular to the eleventh plate surface from the eleventh plate surface of the eleventh plate portion. The brim portion extends along the radial direction of the spiral portion from the outer periphery of the end portion of the surrounding wall on the side opposite to the eleventh plate portion side. The coating portion covers the wall that forms the second groove. A 2nd groove | channel is formed in the at least brim part of the end surface on the opposite side to the 11th board part side among the surrounding wall parts, and the brim part. And in the 1st key part and the 2nd key part, the corner | angular part formed from the sliding surface with respect to the wall which forms a groove | channel, and a pair of 5th surface orthogonal to a sliding direction is chamfered.

  In this scroll compressor, the component is a fixed scroll. And in the 1st key part and the 2nd key part, the corner | angular part formed from the sliding surface with respect to the wall which forms a groove | channel, and a pair of 5th surface orthogonal to a sliding direction is chamfered. For this reason, in this scroll compressor, if either the first key portion or the second key portion is fitted in the first groove of the movable scroll, the coating applied to the wall forming the first groove of the movable scroll The life of the part can be made longer than before. On the other hand, the remaining key portions are fitted into second grooves formed in the fixed scroll or the like. That is, in this scroll compressor, not only the life of the coating portion applied to the wall forming the first groove of the movable scroll but also the life of the coating portion applied to the wall forming the second groove of the fixed scroll is improved. Can be made longer than before.

  A rotation preventing member according to a ninth aspect includes an annular main body, a pair of first key portions, and a pair of second key portions. The first key portions are opposed to each other across the axis of the main body, and extend to one side along the axial direction of the main body. The first key portion has a pair of 21st surfaces including the axial direction and the radial direction of the main body. The second key portion is parallel to the 21st surface and faces the virtual surface including the axis, and extends to the same side as the first key portion or the opposite side of the first key portion along the axial direction. The second key portion has a pair of 22nd surfaces orthogonal to the 21st surface and including the axial direction. And at least the 1st key part of the 1st key part and the 2nd key part is provided with the hollow opened to the end face of the side where the key part extends.

  In this rotation preventing member, at least the first key portion of the first key portion and the second key portion is provided with a recess that opens to the end surface on the side where the key portion extends. For this reason, in this autorotation prevention member, lubricating oil can be stored in a hollow for a fixed period. For this reason, when this anti-rotation member is employed in the scroll compressor, even when the coating portion of the movable scroll is completely lost, the 21st key portion of the anti-rotation member is activated when the scroll compressor is started. It is possible to prevent seizure or abnormal wear from occurring between the surface or the twenty-second surface and the wall forming the keyway. In such a case, it is more effective if the scroll compressor is started at low speed or inching.

  A movable scroll component according to a tenth aspect includes a first plate portion, a first spiral portion, a pair of first grooves, a cylindrical portion, and a first through hole. The first spiral part extends from the first plate surface of the first plate part while maintaining the spiral shape in a direction perpendicular to the first plate surface. The first groove is formed in a straight line on the first plate portion along the radial direction of the first spiral portion. The cylindrical portion extends from the second plate surface, which is the plate surface on the back side of the first plate surface, in a direction perpendicular to the second plate surface. The first through hole extends from a portion of the first plate portion surrounded by the cylindrical portion or the cylindrical portion and communicates with the first groove. Here, the “cylindrical portion” is a bearing or the like.

  In the movable scroll component, the first through hole extends from the portion of the first plate portion surrounded by the cylindrical portion or the cylindrical portion and communicates with the first groove. For this reason, when this movable scroll component is employed in a scroll compressor, a part of the lubricating oil supplied to the cylindrical portion (bearing) through the crankshaft is transferred to the first groove, that is, the key groove of the movable scroll component. It is supplied in the shortest time. For this reason, when this movable scroll component is employed in the scroll compressor, even when the coating portion of the movable scroll is completely lost, the key portion of the rotation preventing member and the above key when the scroll compressor is started It is possible to prevent seizure and abnormal wear from occurring between the walls forming the grooves.

  A movable scroll component according to an eleventh aspect of the present invention is the movable scroll component according to the tenth aspect of the present invention, further comprising a flow rate adjusting member. The flow rate adjusting member has a second through hole that communicates the first through hole and the first groove. And this flow volume adjustment member is engage | inserted by the part by the side of the 1st groove | channel among 1st through-holes. The diameter of the second through hole is made smaller than the diameter of the first through hole. Further, the flow rate adjusting member may be screw-type fixed or press-fitted and fixed.

  In this movable scroll component, the flow rate adjusting member has a second through hole that communicates the first through hole and the first groove, and is fitted into a portion of the first through hole on the first groove side. For this reason, in this movable scroll component, the supply amount of the lubricating oil to the key groove is appropriately maintained only by simple processing.

  The anti-rotation member according to the first aspect of the present invention reduces the risk of scraping off the coating applied to the wall forming the key groove of the movable scroll if the first key part is fitted in the key groove of the movable scroll. Can do. Therefore, this rotation prevention member can make the lifetime of the coating part provided on the wall forming the keyway of the movable scroll longer than before.

  According to the second aspect of the present invention, when the first key portion is fitted in the key groove of the orbiting scroll, the life of the coating portion provided on the wall forming the key groove of the orbiting scroll becomes longer than that of the conventional one. be able to. On the other hand, since the second key portion is directed vertically downward, the lubricating oil is hardly exhausted around the second key portion even when the refrigerated container or the refrigerated container is not used for a long period of time.

  The anti-rotation member according to the third aspect of the present invention is the film portion applied to the wall that forms the key groove of the movable scroll if either the first key portion or the second key portion is fitted in the key groove of the movable scroll. Can be made longer than before. On the other hand, the remaining key portions are fitted into key grooves formed in a fixed scroll or the like. In other words, this anti-rotation member is not only used for the life of the film part provided on the wall forming the key groove of the movable scroll but also when the film part is provided on the wall forming the key groove of the fixed scroll or the like. The life of the coating part can also be made longer than before.

  In the rotation preventing member according to the fourth aspect of the present invention, it is possible to suppress the scraping of the coating portion of the movable scroll by the first key portion while substantially maintaining the surface pressure of the second surface against the wall forming the key groove of the movable scroll. .

  In the scroll compressor according to the fifth aspect of the invention, it is possible to reduce the possibility that the anti-rotation member scrapes off the coating portion applied to the wall that forms the keyway of the movable scroll. Therefore, in this scroll compressor, the lifetime of the coating part applied to the wall forming the keyway of the movable scroll can be made longer than before.

  In the scroll compressor according to the sixth aspect of the present invention, if the first key portion of the rotation preventing member is fitted into the first groove of the movable scroll, the life of the coating portion applied to the wall forming the first groove of the movable scroll. Can be made longer than before. On the other hand, since the second key portion is directed vertically downward, the lubricating oil is hardly exhausted around the second key portion even when the refrigerated container or the refrigerated container is not used for a long period of time.

  In the scroll compressor according to the seventh aspect of the present invention, if any one of the first key portion and the second key portion is fitted in the first groove of the movable scroll, it is applied to the wall that forms the first groove of the movable scroll. The life of the coating can be made longer than before. On the other hand, the remaining key portions are fitted into second grooves formed in the fixed scroll or the like. That is, in this scroll compressor, not only the life of the coating portion applied to the wall forming the first groove of the movable scroll but also the life of the coating portion applied to the wall forming the second groove of the fixed scroll is improved. Can be made longer than before.

  In the scroll compressor according to the eighth aspect of the invention, if any one of the first key portion and the second key portion is fitted in the first groove of the movable scroll, it is applied to the wall forming the first groove of the movable scroll. The life of the coating can be made longer than before. On the other hand, the remaining key portions are fitted into second grooves formed in the fixed scroll or the like. That is, in this scroll compressor, not only the life of the coating portion applied to the wall forming the first groove of the movable scroll but also the life of the coating portion applied to the wall forming the second groove of the fixed scroll is improved. Can be made longer than before.

  In the rotation prevention member according to the ninth aspect of the invention, the lubricating oil can be stored in the recess for a certain period. For this reason, when this anti-rotation member is employed in the scroll compressor, even when the coating portion of the movable scroll is completely lost, the 21st key portion of the anti-rotation member is activated when the scroll compressor is started. It is possible to prevent seizure or abnormal wear from occurring between the surface or the twenty-second surface and the wall forming the keyway.

  In the movable scroll component according to the tenth aspect, the first through hole extends from a portion of the first plate portion surrounded by the cylindrical portion or the cylindrical portion and communicates with the first groove. For this reason, when this movable scroll component is employed in a scroll compressor, a part of the lubricating oil supplied to the cylindrical portion (bearing) through the crankshaft is transferred to the first groove, that is, the key groove of the movable scroll component. It is supplied in the shortest time. For this reason, when this movable scroll component is employed in the scroll compressor, even when the coating portion of the movable scroll is completely lost, the key portion of the rotation preventing member and the above key when the scroll compressor is started It is possible to prevent seizure and abnormal wear from occurring between the walls forming the grooves.

  In the movable scroll component according to the eleventh aspect, the amount of lubricating oil supplied to the keyway is maintained appropriately.

<First Embodiment>
The low-pressure dome type scroll compressor 1 according to the first embodiment of the present invention constitutes a refrigerant circuit together with an evaporator, a condenser, an expansion mechanism, and the like, and plays a role of compressing a gas refrigerant in the refrigerant circuit. As shown in FIG. 1, it mainly comprises a vertically cylindrical sealed dome-shaped casing 10, a scroll compression pump unit 15, a drive motor 16, a lower main bearing 60, a suction pipe 19, and a discharge pipe 20. Has been. The low-pressure dome type scroll compressor 1 is a vertically placed compressor, and is installed such that the scroll compression pump unit 15 is located above the drive motor 16. Hereinafter, the components of the low-pressure dome type scroll compressor 1 will be described in detail.

[Details of components of low-pressure dome type scroll compressor]
(1) Casing The casing 10 mainly includes a substantially cylindrical trunk casing portion 11, a bowl-shaped upper wall portion 12 that is airtightly welded to the upper end portion of the trunk casing portion 11, and a trunk casing portion. 11 and a bowl-shaped bottom wall portion 13 which is welded in an airtight manner to the lower end portion. The casing 10 mainly accommodates a scroll compression pump unit 15 that compresses a gas refrigerant and a drive motor 16 that is disposed below the scroll compression pump unit 15. The scroll compression pump unit 15 and the drive motor 16 are connected by a crankshaft 17 disposed so as to extend in the vertical direction in the casing 10.

(2) Scroll Compression Pump Unit As shown in FIG. 1, the scroll compression pump unit 15 mainly meshes with the housing 23, the fixed scroll 24 disposed in close contact with the upper portion of the housing 23, and the fixed scroll 24. The movable scroll 26 is configured to include an Oldham ring 39 that prevents the movable scroll 26 from rotating. Hereinafter, the components of the scroll compression pump unit 15 will be described in detail.

a) Housing The housing 23 is press-fitted and fixed to the body casing portion 11. The fixed scroll 24 is fastened and fixed to the housing 23 with bolts (not shown) so that the upper end surface is in close contact with the lower end surface of the fixed scroll 24. The housing 23 is formed with a housing recess 31 that is recessed at the center of the upper surface, and a bearing portion 32 that extends downward from the center of the lower surface. The bearing portion 32 is formed with a bearing hole penetrating in the vertical direction, and the crankshaft 17 is rotatably fitted in the bearing hole.

b) Fixed Scroll The fixed scroll 24 mainly includes a mirror plate 24a and a spiral (involute) wrap 24b formed on the lower surface of the mirror plate 24a. A discharge passage (not shown) communicating with the compression chamber 40 (described later) is formed in the end plate 24a. The discharge passage is formed so as to extend in the vertical direction at the central portion of the end plate 24a.

c) Movable Scroll As shown in FIG. 1, the movable scroll 26 mainly includes an end plate 26a, a spiral (involute) wrap 26b formed on the upper surface side of the end plate 26a, and a lower surface side of the end plate 26a. The bearing portion 26c is formed, and key grooves 26d formed at both ends of the end plate 26a. In addition, the movable scroll 26 is subjected to a rubrite process on the entire surface. The movable scroll 26 is supported by the housing 23 by fitting an Oldham ring 39 (described later) into the keyway 26d. Further, the upper end of the crankshaft 17 is fitted into the bearing portion 26c. The movable scroll 26 revolves in the housing 23 without being rotated by the rotation of the crankshaft 17 by being incorporated in the scroll compression pump unit 15 in this way. The wrap 26b of the movable scroll 26 is meshed with the wrap 24b of the fixed scroll 24, and a compression chamber 40 is formed between the contact portions of both the wraps 24b and 26b. In the compression chamber 40, the volume between the laps 24b and 26b contracts toward the center as the movable scroll 26 revolves. In the low-pressure dome type scroll compressor 1 according to the present embodiment, the gas refrigerant is compressed in this way.

d) Oldham ring The Oldham ring 39 is a member for preventing the rotation of the movable scroll 26. As shown in FIGS. 2 to 6, the Oldham ring 39 mainly includes a main body 39c, a movable scroll side key portion 39a, and a housing. The side key unit 39b is configured. As shown in FIGS. 3 and 4, the main body 39 c is a substantially annular shaped body. The movable scroll side key portion 39a is a pair of protrusions that extend to one side along the axial direction from a protrusion that faces the shaft L1 of the main body 39c and extends to the outer peripheral side in the radial direction of the main body 39c. The movable scroll side key portion 39a is formed with a pair of first sliding surfaces P2 including the axial direction and the radial direction of the main body 39c and a pair of first intersecting surfaces P1 orthogonal to the radial direction of the main body. Has been. The first sliding surface P2 is a surface that slides with respect to the wall that forms the key groove 26d of the movable scroll 26. All corners formed from the first sliding surface P2 and the first intersecting surface P1 are chamfered (see FIGS. 2, 3 and 5). The chamfer angle is 30 ° with respect to the first sliding surface P2. The ratio of the C chamfering length to the length of the movable scroll side key portion 39a in the main body radial direction is preferably 0.005 or more and 0.06 or less. The housing-side key portion 39b is a pair of protrusions that extend in the axial direction from the protrusions that face each other across the axis L1 of the main body 39c and extend to the outer peripheral side in the radial direction of the main body 39c. , And is arranged at a position inclined by approximately 90 ° from the movable scroll side key portion 39a around the axis L1. The housing side key portion 39b includes a second sliding surface P4 that is parallel to the first intersecting surface P1 of the movable scroll side key portion 39a, and a first sliding surface P2 of the movable scroll side key portion 39a. A second intersecting surface P3 that is a parallel surface is formed. The second sliding surface P4 slides with respect to the wall forming the groove of the housing 23. The movable scroll side key portion 39 a is fitted in the key groove 26 d of the movable scroll 26, and the housing side key portion 39 b is fitted in an Oldham groove (not shown) formed in the housing 23. The Oldham groove is an oval groove.

(3) Drive Motor The drive motor 16 is a DC motor in the present embodiment, and mainly includes an annular stator 51 fixed to the inner wall surface of the casing 10 and a slight gap (air gap) inside the stator 51. The rotor 52 is rotatably accommodated with a passage).

  In the stator 51, a copper wire is wound around a tooth portion, and a coil end 53 is formed above and below.

  The rotor 52 is drivably coupled to the movable scroll 26 of the scroll compression pump unit 15 via a crankshaft 17 that is disposed at the axial center of the body casing portion 11 so as to extend in the vertical direction.

  Since the crankshaft 17 has an oil supply hole 18 formed in the inside thereof so as to penetrate vertically along the direction intersecting the longitudinal direction, when the crankshaft 17 is rotated by the drive motor 16, the centrifugal pump As a result, the lubricating oil is supplied from the oil reservoir S to the bearing portion 26c of the movable scroll 26. Then, the lubricating oil supplied to the bearing portion 26c of the movable scroll 26 is supplied to the thrust surface between the movable scroll 26 and the housing 23, and then returns to the oil sump S again.

(4) Lower Main Bearing The lower main bearing 60 is disposed in the lower space below the drive motor 16. The lower main bearing 60 is fixed to the trunk casing 11 and constitutes a lower end bearing of the crankshaft 17 to support the crankshaft 17.

(5) Suction Pipe The suction pipe 19 is for guiding the refrigerant in the refrigerant circuit to the scroll compression pump unit 15, and is fitted into the body casing portion 11 of the casing 10 in an airtight manner.

(6) Discharge pipe The discharge pipe 20 is for discharging the refrigerant in the casing 10 to the outside of the casing 10, and is fitted into the upper wall portion 12 of the casing 10 in an airtight manner.

[Operation of low-pressure dome type scroll compressor]
When the drive motor 16 is driven, the crankshaft 17 is rotated, and the revolving operation is performed without the movable scroll 26 rotating. Then, the low-pressure gas refrigerant is sucked into the compression chamber 40 from the peripheral side of the compression chamber 40 through the suction pipe 19 and is compressed as the volume of the compression chamber 40 changes, and becomes a high-pressure gas refrigerant. Then, the high-pressure gas refrigerant is discharged from the central portion of the compression chamber 40 through the discharge passage to the discharge pipe 20 and discharged outside the casing 10. The gas refrigerant discharged to the outside of the casing 10 circulates through the refrigerant circuit, and is again sucked into the scroll compression pump unit 15 through the suction pipe 19 and compressed.

[Characteristics of low-pressure dome type scroll compressor]
(1)
In the low-pressure dome type scroll compressor 1 according to the first embodiment of the present invention, all corners formed by the first sliding surface P2 and the first intersecting surface P1 in the Oldham ring 39 are chamfered. For this reason, in this low-pressure dome type scroll compressor 1, it is possible to reduce the risk that the Oldham ring 39 will scrape off the surface coating applied to the wall forming the key groove 26d of the movable scroll 26. Therefore, in this low-pressure dome type scroll compressor 1, the lifetime of the surface coating applied to the wall forming the key groove 26d of the movable scroll 26 can be made longer than before.

(2)
In the low-pressure dome type scroll compressor 1 according to the first embodiment of the present invention, the ratio of the C chamfering length to the length of the movable scroll side key portion 39a in the main body radial direction is set to 0.005 or more and 0.06 or less. . For this reason, in this low-pressure dome type scroll compressor 1, the movable scroll side key is maintained while substantially maintaining the surface pressure of the first sliding surface P2 of the movable scroll side key portion 39a against the wall forming the key groove 26d of the movable scroll 26. It is possible to prevent the surface coating of the movable scroll 26 from being scraped off by the portion 39a.

[Modification]
(A)
In the Oldham ring 39 according to the first embodiment, the corner formed by the first sliding surface P2 and the first intersecting surface P1 of the movable scroll side key portion 39a is chamfered. It may be chamfered.

(B)
In the Oldham ring 39 according to the first embodiment, the C-chamfer angle of the corner formed by the first sliding surface P2 and the first intersecting surface P1 of the movable scroll side key portion 39a is relative to the first sliding surface P2. However, in the present invention, the C chamfer angle is not particularly limited, and there is no problem as long as it is 1 ° or more. The C chamfering angle is preferably 45 ° or less, more preferably 30 ° or less with respect to the first sliding surface P2, from the viewpoint of easy penetration of the lubricating oil into the sliding surface.

(C)
The movable scroll 26 according to the first embodiment has been subjected to a rubrite process as a surface film forming process, but has been subjected to another surface film forming process such as a molybdenum disulfide process or an alumite process as a surface film forming process. May be.

(D)
In the first embodiment, the Oldham ring 39 according to the present invention is used in the low-pressure dome type scroll compressor 1, but this Oldham ring 39 is used in a high-pressure dome type scroll compressor, a high-low pressure dome type scroll compressor, and the like. May be.

(E)
In the Oldham ring 39 according to the first embodiment, the movable scroll side key portion 39a extends to one side along the axial direction from the protruding portion extending to the radially outer peripheral side of the main body 39c. However, the movable scroll side key part 39a may extend to the one side along the axial direction directly from the main body.

(F)
In the Oldham ring 39 according to the first embodiment, the housing-side key portion 39b extends from the protruding portion extending to the radially outer peripheral side of the main body 39c to the opposite side of the movable scroll-side key portion 39a along the axial direction. However, the housing side key portion 39b may extend from the main body directly to the opposite side of the movable scroll side key portion 39a along the axial direction.

(G)
In the Oldham ring 39 according to the first embodiment, the movable scroll side key portion 39a and the housing side key portion 39b are formed on opposite sides of the main body. However, in the Oldham ring, as shown in FIGS. 7 and 8, another pair of key portions (hereinafter referred to as fixed scroll side key portions) 139b is formed on the same side as the movable scroll side key portion 39a. There is an Oldham ring 139. The fixed scroll side key portion 139b is fitted in grooves 124a, 224a, and 324a formed on the lower surfaces of the surrounding wall portions and the flange portions of the fixed scrolls 124, 224, and 324 as shown in FIGS. Become. If the fixed scroll side key portion 139b is also directed upward in this manner, the lubricating oil around all the key portions 39a and 139b tends to be exhausted. Therefore, in this case, not only the movable scroll side key part 39a but also the fixed scroll side key part 139b is subjected to the same chamfering process as in the first embodiment. Specifically, in the fixed scroll side key portion 139b, the twelfth sliding surface P14 that is parallel to the first intersecting surface P1 of the movable scroll side key portion 39a and the first sliding of the movable scroll side key portion 39a. All corner portions formed from the twelfth intersecting surface P13 which is a surface parallel to the surface P2 are C-chamfered or R-chamfered. In this case, the coating portion may be applied to the entire fixed scrolls 124, 224, and 324, or may be applied only to the walls that form the grooves of the fixed scrolls 124, 224, and 324. In such a case, the ratio of the C chamfering length to the length of the fixed scroll side key portion 139b in the main body radial direction is preferably 0.005 or more and 0.06 or less.

(H)
In the Oldham ring 39 according to the first embodiment, the movable scroll side key portion 39a is opposed to the shaft 39 of the main body 39c across the axis L, and extends to one side along the axial direction from the projecting portion extending radially outward of the main body 39c. The housing-side key portion 39b is disposed so as to be opposed to the movable scroll-side key portion 39a about 90 ° from the movable scroll-side key portion 39a with the axis L of the main body 39c interposed therebetween, and extends to the outer peripheral side in the radial direction of the main body 39c. It extended from the protrusion part to the other side of the movable scroll side key part 39a along the axial direction. However, the Oldham ring 239 as shown in FIG. 12 exists in the Oldham ring. Such an Oldham ring 239 mainly includes a main body 239c, a movable scroll side key portion 239a, and a fixed scroll side key portion 239b, as shown in FIGS. As shown in FIG. 13, the main body 239c is a substantially annular shaped body. The fixed scroll side key portion 239b is a pair of protrusions that face each other across the axis L2 of the main body 239c and extend from the radially outer peripheral portion of the main body 239c to one side along the axial direction. The fixed scroll side key portion 239b is formed with a pair of 21st sliding surfaces P24 including the axial direction and the radial direction of the main body 239c, and a pair of 21st crossing surfaces P23 orthogonal to the radial direction of the main body. Has been. The 21st sliding surface P24 forms grooves 124a, 224a, and 324a formed on the lower surfaces of the surrounding wall portions and flange portions of the fixed scrolls 124, 224, and 324 as shown in FIGS. It is a surface that slides against the wall. All corners formed by the 21st sliding surface P24 and the 21st intersecting surface P23 are chamfered (see FIGS. 12 and 13). The chamfer angle is 30 ° with respect to the 21st sliding surface P24. Further, the ratio of the C chamfering length to the length of the fixed scroll side key portion 239b in the main body radial direction is preferably 0.005 or more and 0.06 or less. The movable scroll side key portion 239a is parallel to the 21st sliding surface P24 and faces the virtual surface VP2 including the axis L2 of the main body 239c, and extends along the axial direction to the same side as the fixed scroll side key portion 239b. A pair of protrusions. And this movable scroll side key part 239a is shifted | deviated and arrange | positioned at either side of the two fixed scroll side key parts 239b. The movable scroll side key portion 239a includes a twenty-second crossing surface P21 parallel to the twenty-first sliding surface P24 of the fixed scroll side key portion 239b and a twenty-first crossing surface P23 of the fixed scroll side key portion 239b. The 22th sliding surface P22 which is a surface parallel to is formed. The 22nd sliding surface P22 slides with respect to the wall forming the key groove 26d of the movable scroll 26. All corners formed by the 22nd sliding surface P22 and the 22nd intersecting surface P21 are chamfered (see FIGS. 12 and 13). The chamfer angle is 30 ° with respect to the 22nd sliding surface P22. Further, the ratio of the C chamfering to the length in the direction in which the virtual line orthogonal to the virtual surface VP2 of the movable scroll side key portion 239a extends is preferably 0.005 or more and 0.06 or less.

(I)
In the movable scroll 26 according to the first embodiment, the surface film forming process is performed on the entire surface. However, only the key groove 26d of the movable scroll 26 may be subjected to the surface film forming process, and further the key groove 26d. The surface film forming treatment may be applied only to the wall forming the film.

(J)
The housing 23 according to the first embodiment is formed with an elliptical Oldham groove, but the shape of the Oldham groove is not limited to an elliptical shape and may be other shapes.

<Second Embodiment>
The low-pressure dome-type scroll compressor according to the second embodiment of the present invention is the same as the low-pressure dome-type scroll compressor 1 according to the first embodiment except for the Oldham ring and the operation at the time of startup. Therefore, only the Oldham ring 339 and the operation at the time of activation will be described here.

  As shown in FIGS. 14 to 18, the Oldham ring 339 according to the second embodiment mainly includes a main body 39c, a movable scroll side key portion 339a, and a housing side key portion 39b. In addition, in this description, it has shown that the part to which the code | symbol same as the code | symbol which concerns on 1st Embodiment is attached | subjected is the same part as the part which concerns on 1st Embodiment. As shown in FIGS. 15 and 16, the main body 39c is a substantially annular shaped body. The movable scroll-side key part 339a is a pair of protrusions that are opposed to each other across the axis L of the main body 39c and extend to one side along the axial direction from a protrusion that extends to the outer circumferential side of the main body 39c. The movable scroll side key portion 339a includes a pair of first sliding surfaces P2 including the axial direction and the radial direction of the main body 39c, a pair of first intersecting surfaces P1 orthogonal to the radial direction of the main body 39c, An upper end surface P31 orthogonal to the axial direction of the main body 39c is formed. The first sliding surface P2 is a surface that slides on the wall that forms the key groove 26d of the movable scroll 26. And the hollow HL1 opened to upper end surface P31 is formed in this movable scroll side key part 339a (refer FIGS. 14-18). The housing-side key part 39b is a pair of protrusions that extend in the axial direction from the protrusions that face each other across the axis L of the main body 39c and extend radially outward of the main body 39c to the opposite side of the movable scroll-side key part 39a. , The axis L is arranged at a position inclined by approximately 90 ° from the movable scroll side key portion 39a. The movable scroll side key portion 39 a is fitted in the key groove 26 d of the movable scroll 26, and the housing side key portion 39 b is fitted in an Oldham groove (not shown) formed in the housing 23. The Oldham groove is an oval groove.

[Operation when starting the low-pressure dome type scroll compressor]
In this low-pressure dome type scroll compressor, at the time of start-up, the drive motor 16 is rotated at a low speed for a predetermined time by inverter control.

[Characteristics of low-pressure dome type scroll compressor]
(1)
In the low-pressure dome type scroll compressor according to the second embodiment of the present invention, the movable scroll side key portion 339a of the Oldham ring 339 is provided with a recess HL1 that opens to the upper end surface P31. For this reason, in this low pressure dome type scroll compressor 1, lubricating oil can be stored in hollow HL1 for a fixed period. For this reason, in the low-pressure dome type scroll compressor 1, the lubricating oil can be immediately supplied between the movable scroll side key portion 399a and the wall forming the key groove 26d at the time of activation. Therefore, in the low-pressure dome-type scroll compressor 1, even when the coating portion of the movable scroll 26 is completely lost, the movable scroll-side key portion 399a and the wall that forms the key groove 26d are formed during startup. Can prevent seizure and abnormal wear.

(2)
In the low-pressure dome-type scroll compressor according to the second embodiment of the present invention, the drive motor 16 is rotated at a low speed for a predetermined time by inverter control during startup. For this reason, in this low-pressure dome type scroll compressor, the lubricating oil accumulated in the depression HL1 at the time of start-up is easily spilled from the depression HL1. Therefore, in this low-pressure dome type scroll compressor, the lubricating oil can be supplied almost certainly between the movable scroll side key portion 399a and the wall forming the key groove 26d at the time of activation.

[Modification]
(A)
Although not particularly mentioned in the second embodiment, the invention according to the first embodiment (the invention of chamfering the key portion of the Oldham ring 39) may be applied to the low-pressure dome type scroll compressor according to the second embodiment. .

(B)
Although not specifically mentioned in the second embodiment, modifications similar to the modifications (C) to (J) of the first embodiment may be applied to the low-pressure dome type scroll compressor according to the second embodiment. . Note that, when the modifications (G) and (H) are applied to the low-pressure dome type scroll compressor according to the second embodiment, the fixed scroll side key portions 139b and 239b are formed on the movable scroll side key portion 339a. It is preferable that a depression similar to the depression HL1 is formed.

(C)
In the low-pressure dome type scroll compressor according to the second embodiment, the drive motor 16 is rotated at a low speed for a predetermined time by the inverter control at the time of start-up. May be operated in inching. Even if it does in this way, the same effect as the low-pressure dome type scroll compressor concerning a 2nd embodiment can be acquired.

<Third Embodiment>
The low-pressure dome type scroll compressor 101 according to the third embodiment of the present invention is the same as the low-pressure dome type scroll compressor 1 according to the first embodiment except for the movable scroll. For this reason, only the movable scroll 126 will be described here. In this embodiment, the Oldham ring may be a conventional Oldham ring, the Oldham ring 39 according to the first embodiment may be employed, or the Oldham according to a modification of the first embodiment. The rings 139 and 239 may be employed, or the Oldham ring 339 according to the second embodiment may be employed.

  As shown in FIGS. 19 and 20, the movable scroll 126 according to the third embodiment mainly includes an end plate 126a, a spiral (involute) wrap 26b formed on the upper surface side of the end plate 126a, and an end plate 126a. It is comprised from the bearing part 26c formed in the lower surface side. In addition, in this description, it has shown that the part to which the code | symbol same as the code | symbol which concerns on 1st Embodiment is attached | subjected is the same part as the part which concerns on 1st Embodiment. In addition, the movable scroll 126 is subjected to a rubrite process on the entire surface. The end plate 126a is formed with key grooves 26d at both ends. Further, the end plate 126a is formed with an oil supply passage 126e penetrating from a portion surrounded by the bearing portion 26c to the key groove 26d. The oil supply path 126e includes a small diameter path 261 formed on the bearing portion 26c side and a large diameter path 262 formed in the key groove 26d and communicating with the small diameter path 261. Further, as shown in FIGS. 21 and 22, a flow rate adjusting member 127 is press-fitted and fixed in the large diameter path 262. The flow rate adjusting member 127 has a through hole 128 having a smaller diameter than the small diameter path 261. The through hole 128 has a small diameter in a state where the flow rate adjusting member 127 is press-fitted and fixed to the large diameter path 262. The path 261 and the keyway 26d are communicated. That is, the supply amount of the lubricating oil to the key groove 26d is limited by the diameter of the through hole 128 of the flow rate adjusting member 127.

[Lubrication oil supply route]
In the low-pressure dome type scroll compressor 101 according to the third embodiment, when the crankshaft 17 is rotated by the drive motor 16, the lubricating oil is supplied from the oil reservoir S to the bearing portion 26c of the movable scroll 126 by the action of the centrifugal pump. The The lubricating oil supplied to the bearing portion 26 c of the movable scroll 26 is supplied to the thrust surface of the movable scroll 26 and the housing 23 and the small diameter path 261 of the oil supply passage 126 a formed in the end plate 126 a of the movable scroll 126. And is supplied to the key groove 26 d of the movable scroll 126 through the through hole 128 of the flow rate adjusting member 127. After that, the lubricating oil supplied to each part such as the scroll compression pump unit returns to the oil sump S again.

[Characteristics of low-pressure dome type scroll compressor]
(1)
In the low-pressure dome type scroll compressor 101 according to the third embodiment of the present invention, in the movable scroll 126, an oil supply passage 126e penetrating from a portion surrounded by the bearing portion 26c of the end plate 126a to the key groove 26d is formed. Immediately after startup, lubricating oil is supplied to the keyway 26d. For this reason, in this low-pressure dome type scroll compressor 101, even when the coating part of the movable scroll 126 is completely lost, the key part of the movable scroll 126 and the key part of the movable scroll 126 and the movable scroll side key part of the Oldham ring are activated. It is possible to prevent seizure and abnormal wear from occurring between the wall forming 26d.

(2)
In the low-pressure dome-type scroll compressor 101 according to the third embodiment of the present invention, the oil supply passage 126e formed in the end plate 126a of the movable scroll 126 is composed of a small-diameter passage 261 and a large-diameter passage 262. The member 127 was press-fitted and fixed. For this reason, in this low-pressure dome type scroll compressor 101, the supply amount of the lubricating oil to the key groove 26d of the movable scroll can be adjusted without requiring difficult processing.

[Modification]
(A)
The movable scroll 126 according to the third embodiment has been subjected to a rubrite process as a surface film forming process, but has been subjected to another surface film forming process such as a molybdenum disulfide process or an alumite process as the surface film forming process. May be.

(B)
In the third embodiment, the movable scroll 126 according to the present invention is used in the low-pressure dome type scroll compressor 101. However, the movable scroll 126 is used in a high-pressure dome type scroll compressor, a high-low pressure dome type scroll compressor, and the like. May be.

(C)
In the movable scroll 126 according to the third embodiment, the surface film forming process is performed on the entire surface. However, only the key groove 26d of the movable scroll 126 may be subjected to the surface film forming process, and further, the key groove 26d. The surface film forming treatment may be applied only to the wall forming the film.

(D)
In the movable scroll 126 according to the third embodiment, the oil supply passage 126e is formed in the end plate 126a so as to penetrate from the portion surrounded by the bearing portion 26c of the end plate 126a to the key groove 26d. It may be formed so as to penetrate from 26c to key groove 26d.

(E)
In the movable scroll 126 according to the third embodiment, the key groove 26d is formed at both ends of the end plate 126a. However, the key groove is formed on the lower surface (that is, the side where the bearing portion 26c exists) of the end plate of the movable scroll. It may be formed only.

(F)
In the movable scroll 126 according to the third embodiment, the oil supply passage 126e is composed of a small diameter passage 261 and a large diameter passage 262, and the flow rate adjusting member 127 is press-fitted and fixed to the large diameter passage 262, but the flow rate adjusting member 127 is fixed by screws. It may be. That is, a female screw is cut on the inner peripheral wall of the large-diameter path 262 and a male screw is cut on the outer periphery of the flow rate adjusting member 127.

(G)
In the movable scroll 126 according to the third embodiment, the oil supply passage 126e is composed of the small diameter passage 261 and the large diameter passage 262, and the flow rate adjusting member 127 is press-fitted and fixed to the large diameter passage 262, but the oil supply passage is composed of only the small diameter passage. The flow rate adjusting member 127 may not be inserted when the small path can be processed into a desired diameter.

  The anti-rotation member according to the present invention has a feature that the life of the surface coating applied to the wall forming the keyway of the movable scroll can be made longer than before, and in particular, a low-pressure dome type scroll compressor. Useful for.

  Further, the anti-rotation member according to the present invention includes a key portion of the anti-rotation member and a wall forming the key groove when the scroll compressor is started, even when the film portion of the movable scroll is completely lost. In particular, it is possible to prevent seizure and abnormal wear from occurring, and is particularly useful for a low-pressure dome type scroll compressor.

  In addition, the operating scroll component according to the present invention includes a key portion of the rotation preventing member and a wall that forms the key groove when the scroll compressor is started, even when the coating portion of the movable scroll is completely lost. In particular, it is possible to prevent seizure and abnormal wear from occurring, and is particularly useful for a low-pressure dome type scroll compressor.

It is a longitudinal section of the scroll compressor concerning a 1st embodiment of the present invention. It is a perspective view of the Oldham ring concerning a 1st embodiment of the present invention. It is a top view of the Oldham ring concerning a 1st embodiment of the present invention. It is a bottom view of the Oldham ring concerning a 1st embodiment of the present invention. It is a side view at the time of seeing the Oldham ring concerning a 1st embodiment of the present invention along the arrangement direction of a movable scroll side key part. It is a side view at the time of seeing the Oldham ring concerning a 1st embodiment of the present invention along the arrangement direction of a housing side key part. It is a top view of an Oldham ring concerning modification (G) of a 1st embodiment of the present invention. It is a side view at the time of seeing the Oldham ring which concerns on the modification (G) of 1st Embodiment of this invention along the sequence direction of a fixed scroll side key part. It is a bottom view of the fixed scroll which concerns on the modification (G) of 1st Embodiment of this invention. It is a bottom view of the fixed scroll which concerns on the modification (G) of 1st Embodiment of this invention. It is a bottom view of the fixed scroll which concerns on the modification (G) of 1st Embodiment of this invention. It is a perspective view of an Oldham ring concerning modification (H) of a 1st embodiment of the present invention. It is a top view of an Oldham ring concerning modification (H) of a 1st embodiment of the present invention. It is a perspective view of the Oldham ring concerning a 2nd embodiment of the present invention. It is a top view of an Oldham ring concerning a 2nd embodiment of the present invention. It is a bottom view of an Oldham ring concerning a 2nd embodiment of the present invention. It is a side view at the time of seeing the Oldham ring concerning a 2nd embodiment of the present invention along the arrangement direction of a movable scroll side key part. It is a side view at the time of seeing the Oldham ring concerning a 2nd embodiment of the present invention along the arrangement direction of a housing side key part. It is a top view of the movable scroll which concerns on 3rd Embodiment of this invention. It is AA sectional drawing of the movable scroll which concerns on 3rd Embodiment of this invention. It is a fragmentary longitudinal cross-sectional view of the scroll compressor in which the movable scroll which concerns on 3rd Embodiment of this invention is integrated. It is an enlarged view of the flow volume adjustment member press-fitted and fixed to the movable scroll incorporated in the scroll compressor which concerns on 3rd Embodiment of this invention.

Explanation of symbols

1 Low pressure dome type scroll compressor (scroll compressor)
23 housing 26 movable scroll 26a, 126a end plate (plate part)
26b Wrap (vortex part)
26d Keyway (first groove)
39, 139, 239 Oldham ring (rotation prevention member)
39a, 239a, 339a Movable scroll side key part (first key part)
39b Housing side key part (second key part)
39c, 239c Oldham ring body (main body)
126e Oil supply hole 127 Flow rate adjusting member 128 Through hole (second through hole)
139b, 239b Fixed scroll side key portion HL1 Depression L1, L2 Oldham ring body axis
P1 First crossing surface (first surface)
P2 1st sliding surface (2nd surface, 21st surface)
P3 Second intersection (third surface)
P4 2nd sliding surface (4th surface, 22nd surface)
P13 12th intersection (3rd surface)
P14 12th sliding surface (4th surface)
P21 22nd crossing surface (3rd surface)
P22 22nd sliding surface (4th surface)
P23 21st crossing (first side)
P24 21st sliding surface (2nd surface)
P31 Upper end surface (end surface)

Claims (11)

An annular body (39c, 239c);
A pair of first surfaces (P1, P23) that are opposed to each other across the axis (L1, L2) of the main body, extend to one side along the axial direction of the main body, and are orthogonal to the radial direction of the main body, the axial direction, and the A pair of first key portions (39a, 239b) having a pair of second surfaces (P2, P24) including a radial direction;
The second surface is parallel to the second surface and faces the virtual surface including the axis, and extends along the axial direction to the same side as the first key portion or the opposite side of the first key portion. A pair of second key portions (39b, 139b) having a pair of third surfaces (P3, P13, P21) parallel to the first surface and a pair of fourth surfaces (P4, P14, P22) parallel to the first surface. 239a),
With
At least a first corner of the first corner formed from the first surface and the second surface and a second corner formed from the third surface and the fourth surface are chamfered.
Anti-rotation member (39, 139, 239). The second key portion (39b) extends to the opposite side of the first key portion along the axial direction.
The rotation preventing member (39) according to claim 1. The second key part (139b, 239a) extends along the axial direction to the same side as the first key part,
The first corner and the second corner are chamfered,
The rotation preventing member (139, 239) according to claim 1. The ratio of the chamfering length to the radial length of the second surface is 0.005 or more and 0.06 or less.
The rotation preventing member according to any one of claims 1 to 3. A first plate portion (26a), a first spiral portion (26b) extending from the first plate surface of the first plate portion in a direction perpendicular to the first plate surface while maintaining a spiral shape; A movable scroll (26) having a pair of first grooves (26d) formed in a straight line in the first plate portion along a radial direction of one spiral portion and a coating portion covering a wall forming the first groove. )When,
Components (23, 124, 224, 324) disposed in the vicinity of the movable scroll and having second grooves (124a, 224a, 324a);
An annular main body (39c, 239c), a pair of first key portions (39a, 239b) extending along the axial direction of the main body toward the movable scroll and inserted into the first groove, and along the axial direction A rotation preventing member (39, 139, 239) having a pair of second key portions (39b, 139b, 239a) extending to the component side and inserted into the second groove;
With
At least the first key portion of the first key portion and the second key portion has a pair of first surfaces orthogonal to the sliding surface (P2, P4, P14, P22, P24) and the sliding direction with respect to the wall forming the groove. The corners formed from the five surfaces (P1, P3, P13, P21, P23) are chamfered,
Scroll compressor (1). The component (23) is a housing disposed on the opposite side of the spiral portion of the movable scroll.
The scroll compressor according to claim 5. The component extends from the eleventh plate portion and the eleventh plate surface of the eleventh plate portion while maintaining a spiral shape in a direction perpendicular to the eleventh plate surface and meshes with the first spiral portion. A fixed scroll having a second spiral portion and an enclosure wall portion formed so as to surround the eleventh spiral portion in a direction perpendicular to the eleventh plate surface from the eleventh plate surface of the eleventh plate portion (124, 324) and further having a coating covering the wall forming the second groove (124a, 324a),
The second groove is formed on an end surface of the surrounding wall portion opposite to the eleventh plate portion side,
In the first key portion and the second key portion, a pair of fifth surfaces (P1, P13, P21) orthogonal to the sliding surface (P2, P14, P22, P24) and the sliding direction with respect to the wall forming the groove. , P23) and the corner formed by chamfering,
The scroll compressor according to claim 5. The component extends from the eleventh plate portion and the eleventh plate surface of the eleventh plate portion while maintaining a spiral shape in a direction perpendicular to the eleventh plate surface and meshes with the first spiral portion. A second spiral part, an enclosure wall part formed so as to surround the eleventh spiral part from the eleventh plate surface of the eleventh plate part in a direction perpendicular to the eleventh plate surface, and the enclosure wall A fixed scroll (224) having a flange extending from the outer periphery of the end opposite to the eleventh plate portion along the radial direction of the spiral portion, and forming the second groove (224a). It further has a coating covering the wall,
The second groove is formed in at least the flange portion of the flange portion and the end surface on the opposite side of the eleventh plate portion side of the surrounding wall portion,
In the first key portion and the second key portion, a pair of fifth surfaces (P1, P13, P21) orthogonal to the sliding surface (P2, P14, P22, P24) and the sliding direction with respect to the wall forming the groove. , P23) and the corner formed by chamfering,
The scroll compressor according to claim 5. An annular body (39c);
A pair of first keys facing each other across the axis (L1) of the main body and extending to one side along the axial direction of the main body and having a pair of 21st surfaces (P2) including the axial direction and the radial direction of the main body Part (339a),
Opposing the virtual surface (VP2) parallel to the 21st surface and including the axis, and extending along the axial direction to the same side as the first key portion or opposite to the first key portion, A pair of second key portions (39b) having a pair of 22nd surfaces (P4) perpendicular to the 21st surface and including the axial direction;
With
At least the first key portion of the first key portion and the second key portion is provided with a recess (HL1) that opens to a terminal surface (P31) on the side where the key portion extends.
Anti-rotation member (339). A first plate portion (126a);
A first spiral portion (26b) extending from the first plate surface of the first plate portion while maintaining a spiral shape in a direction perpendicular to the first plate surface;
A pair of first grooves (26d) formed in a straight line on the first plate portion along the radial direction of the first spiral portion;
A cylindrical portion (26c) extending in a direction perpendicular to the second plate surface from a second plate surface which is a plate surface on the back side of the first plate surface;
A portion of the first plate portion surrounded by the cylindrical portion or a first through hole (126e) extending from the cylindrical portion and communicating with the first groove;
A movable scroll component (126) comprising: A flow rate adjusting member (127) having a second through hole (128) fitted in a portion of the first through hole on the first groove side and communicating the first through hole and the first groove is further provided. ,
The movable scroll component according to claim 10.

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