CN109488589B - Movable scroll plate and scroll compressor - Google Patents

Movable scroll plate and scroll compressor Download PDF

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Publication number
CN109488589B
CN109488589B CN201811244669.XA CN201811244669A CN109488589B CN 109488589 B CN109488589 B CN 109488589B CN 201811244669 A CN201811244669 A CN 201811244669A CN 109488589 B CN109488589 B CN 109488589B
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China
Prior art keywords
protrusion
bearing
outer end
inner diameter
limiting member
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CN201811244669.XA
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CN109488589A (en
Inventor
魏会军
李雪峰
刘韵
康小丽
陈肖汕
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Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
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Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
    • F04C18/0253—Details concerning the base
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
    • F16C9/02—Crankshaft bearings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Pumps (AREA)

Abstract

The invention relates to a movable scroll and a scroll compressor, which are characterized in that an annular bearing bulge coaxial with the movable scroll is arranged on the back of the movable scroll, and an inner cavity of the bearing bulge forms a bearing hole; the outer end face of the bearing bulge is provided with a limiting piece; and the outer end face of the limiting part is provided with a wear-resistant part. The limiting piece can axially limit the central bearing when the bearing hole is thermally deformed or stressed unevenly, and complex processing and material extrusion processes are omitted; the wear-resistant part can effectively avoid direct collision between the eccentric sleeve and the bearing projection when the eccentric sleeve moves upwards, and friction between the eccentric sleeve and other parts is greatly reduced, so that damage to parts caused by collision and friction is reduced, and the efficiency of the compressor is improved.

Description

Movable scroll plate and scroll compressor
Technical Field
The invention relates to the technical field of compressors, in particular to a movable scroll and a scroll compressor.
Background
The scroll compressor is a compressor with wide application range and mature technology, and the compression of working fluid is realized mainly by the reciprocating increase and decrease of the volume of a moon-shaped cavity between a movable scroll plate and a fixed scroll plate. The back of the movable scroll plate is provided with a bearing hole, a radial bearing outer ring is fixed in the bearing hole, the bearing inner ring is in interference fit with an eccentric sleeve used for balancing a balance weight, a crankshaft eccentric part is sleeved in the inner hole of the eccentric sleeve, and when the crankshaft rotates, the eccentric part drives the movable scroll plate through the eccentric sleeve.
The outer ring of the radial bearing needs to be fixed in the bearing hole, the inner ring rotates together with the eccentric part of the crankshaft, and the outer ring of the bearing and the bearing hole can be fixed in a mode of interference, elastic check rings, punching riveting points and the like. In order to match with the rivet point for fixing, in some prior art, an annular groove is formed on the inner wall surface of the bearing hole close to the end part, so that the problem of material looseness or deformation caused by extrusion of the bearing when the rivet point is formed is solved. However, the structure still has the defects that the material extrusion deformation effect is uncontrollable, and the annular groove structure causes the processing difficulty of the bearing hole to be increased and the implementation to be difficult; the inner hole of the eccentric sleeve is in clearance fit with the eccentric pin, and has clearance in the axial direction, so that the eccentric sleeve is easy to move when the compressor runs, the balance weight part of the eccentric sleeve is rubbed with the end surface of the bearing hole of the movable scroll plate or the end surface of the inner hole of the eccentric sleeve is rubbed with the bottom surface of the bearing hole, and unnecessary mechanical loss and impurities are generated; in the prior art, the heads of some eccentric pins adopt a segmented groove structure, and the elastic retainer rings are clamped to limit the upward movement of the eccentric sleeves so as to achieve the purpose of avoiding the collision and the interference of parts. But the structure can not solve the problem of the upward movement of the eccentric sleeve fundamentally, and the upward movement of the eccentric sleeve is easy to interfere with the elastic retainer ring and even leads to the clamping of the eccentric sleeve, thus causing the failure of the functions of high power consumption and eccentric amount adjustment.
Therefore, it is desirable to provide a movable scroll and a scroll compressor to solve the disadvantages of the prior art.
Disclosure of Invention
The invention provides a movable scroll plate and a scroll compressor, aiming at solving the problem that a radial bearing slides axially and an eccentric sleeve collides and rubs with other parts in the axial movement process in the prior art.
The invention provides a movable scroll,
the back of the movable scroll plate is provided with an annular bearing bulge coaxial with the movable scroll plate, and an inner cavity of the bearing bulge forms a bearing hole;
the outer end face of the bearing bulge is provided with a limiting piece; and the outer end face of the limiting part is provided with a wear-resistant part.
Further, the limiting piece is annular; the limiting piece is fixedly connected with the outer end face of the bearing protrusion.
Further, the outer diameter of the limiting piece is smaller than that of the bearing protrusion; the inner diameter of the limiting part is smaller than that of the bearing protrusion.
Further, the locating part circumference evenly is equipped with the mounting hole that the figure is greater than 1 rather than the axial direction parallel, the bellied outer terminal surface of bearing corresponds and is equipped with vice mounting hole, the locating part with laminating back through running through the mounting hole with the mounting fixed connection of vice mounting hole of the bellied outer terminal surface of bearing.
Furthermore, the limiting part and the bearing protrusion are fixedly connected through interference fit.
Furthermore, one end of the limiting part is provided with an annular first bulge, the outer diameter of which is equal to the outer diameter of the limiting part, and the inner diameter of which is smaller than the inner diameter of the limiting part, the outer end surface of the bearing bulge is provided with an annular second bulge, the inner diameter of which is equal to the inner diameter of the bearing bulge, and the outer diameter of which is smaller than the outer diameter of the bearing bulge, and the inner wall surface of the first bulge is in interference fit with the outer wall surface of the second bulge to realize the fixed connection of the limiting part and the outer end surface of the bearing bulge;
the height of the first protrusion is less than or equal to the height of the second protrusion.
Furthermore, an annular third protrusion with an inner diameter equal to that of the limiting part and an outer diameter smaller than that of the limiting part is arranged at one end of the limiting part, an annular fourth protrusion with an outer diameter equal to that of the bearing protrusion and an inner diameter smaller than that of the bearing protrusion is arranged on the outer end face of the bearing protrusion, and the outer wall face of the third protrusion is in interference fit with the inner wall face of the fourth protrusion to realize fixed connection between the limiting part and the outer end face of the bearing protrusion;
the height of the third protrusion is greater than or equal to the height of the fourth protrusion.
Furthermore, the wear-resisting part is annular, the wear-resisting part with the outer terminal surface fixed connection of locating part.
Further, an annular groove is formed in the outer end face of the limiting piece; the wear-resistant part comprises a wear-resistant ring; the wear-resistant ring is in interference fit with the annular groove to realize the connection between the wear-resistant ring and the limiting piece; the height of the wear-resistant ring is greater than the depth of the annular groove.
Further, the wear-resistant part comprises a wear-resistant ring (14a) made of wear-resistant material and attached to the outer end face of the limiting part.
Further, the wear-resistant part comprises a wear-resistant coating coated on the outer end face of the limiting part.
Further, the wear-resistant coating is fully distributed on the outer end face of the limiting part.
Based on the same invention idea, the invention also provides a scroll compressor, which comprises the movable scroll.
Further, the scroll compressor also comprises a shell assembly, a motor arranged in the shell assembly, a crankshaft in driving connection with the motor and a fixed scroll engaged with the movable scroll; an eccentric sleeve is sleeved on the eccentric pin at the top end of the crankshaft, and a radial bearing is arranged between the eccentric sleeve and the inner wall of the bearing bulge of the movable scroll plate.
Further, the inner diameter of the limiting member is larger than the inner diameter of the radial bearing outer ring of the radial bearing.
Further, the outer end face of the radial bearing is flush with the outer end face of the second protrusion.
Further, the outer end face of the radial bearing is flush with the inner end face of the fourth protrusion.
Compared with the closest prior art, the technical scheme of the invention has the following advantages:
according to the movable scroll provided by the technical scheme, the limiting piece arranged on the outer end face of the bearing bulge can axially limit the spindle bearing when the bearing bulge is thermally deformed or stressed unevenly, and complex processing and material extrusion processes are omitted; the wear-resistant part arranged on the outer end face of the limiting part can effectively avoid direct collision between the eccentric sleeve and the bearing bulge when the eccentric sleeve moves upwards, and greatly reduces friction between the eccentric sleeve and the end face of the bearing bulge, so that damage to parts caused by collision and friction is reduced, and the efficiency of the compressor is improved; and the locating part and the wear-resisting part have compact structure, integrated design, small occupied space, simple and convenient processing and installation and do not influence the installation and the use of other parts.
Drawings
Fig. 1 is a partial view of the installation of a movable scroll provided in embodiment 1 of the present invention;
fig. 2 is a structural diagram of a limiting member provided in embodiment 1 of the present invention;
fig. 3 is a structural diagram of a limiting member and a wear-resistant member provided in embodiment 1 of the present invention;
FIG. 4 is a partial view showing the mounting of a movable scroll provided in embodiment 2 of the present invention;
fig. 5 is a structural diagram of a limiting member provided in embodiment 2 of the present invention;
FIG. 6 is a partial view showing the mounting of a movable scroll provided in embodiment 3 of the present invention;
fig. 7 is a structural diagram of a limiting member according to embodiment 3 of the present invention;
FIG. 8 is a partial view showing the mounting of a movable scroll provided in embodiment 4 of the present invention;
fig. 9 is a structural diagram of a limiting member and a wear-resistant member according to embodiment 4 of the present invention;
fig. 10 is a sectional view of a scroll compressor provided in embodiment 6 of the present invention.
Wherein, 1-the handpiece lid; 2-a fixed scroll; 3-moving the scroll plate; 4-a scaffold; 5-a main bearing; 6-shaft seal; 7-a housing; 8-a crankshaft; 9-a motor rotor; 10-a motor stator; 11-suction port; 12-a secondary bearing; 13-an eccentric sleeve; 14-a wear ring; 14 a-a wear ring; 15-a limit piece; 15 a-an annular groove; 15b, mounting holes; 16-a fixing member; 17-radial bearing; 17a, a radial bearing outer ring; 17b, a radial bearing inner ring; 18-anti-rotation mechanism; 19-a vent valve assembly; 20-oil component.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example 1
As shown in fig. 1 to 3, the present invention provides a orbiting scroll 3,
the back of the movable scroll 3 is provided with an annular bearing bulge coaxial with the movable scroll, and an inner cavity of the bearing bulge forms a bearing hole;
a limiting piece 15 is arranged on the outer end face of the bearing protrusion; the outer end face of the limiting piece 15 is provided with a wear-resistant piece.
The limiting piece 15 arranged on the outer end face of the bearing bulge can axially limit the spindle bearing 17 when the bearing bulge is thermally deformed or stressed unevenly, and complex processing and material extrusion processes are omitted; the wear-resistant part arranged on the outer end face of the limiting part 15 can effectively avoid direct collision between the eccentric sleeve 13 and the bearing bulge when the eccentric sleeve moves upwards, and greatly reduces friction between the eccentric sleeve 13 and the end face of the bearing bulge, so that part damage caused by collision and friction is reduced, and the efficiency of the compressor is improved; and the limiting part 15 and the wear-resistant part have compact structure, integrated design, small occupied space, simple and convenient processing and installation and do not influence the installation and use of other parts.
Further, the limiting member 15 is annular; the limiting piece 15 is fixedly connected with the outer end face of the bearing protrusion.
Further, the outer diameter of the limiting member 15 is smaller than that of the bearing protrusion; the inner diameter of the limiting piece 15 is smaller than that of the bearing protrusion; the limiting part 15 does not increase the radial size of the bearing bulge, and does not affect the installation and use of other parts, and the limiting part 15 forms an annular limiting baffle in the bearing bulge to limit the axial movement of the radial bearing 17.
Further, the limiting member 15 is uniformly provided with mounting holes 15b which are more than 1 in number and are parallel to the axial direction of the limiting member in the circumferential direction, the outer end surface of the bearing protrusion is correspondingly provided with auxiliary mounting holes, and the limiting member 15 is fixedly connected with the outer end surface of the bearing protrusion through a fixing member 16 which penetrates through the mounting holes 15b and the auxiliary mounting holes after being attached to the outer end surface of the bearing protrusion; the fixing piece 16 can be selected from a pin, a screw or a bolt, and a mounting structure matched with the pin, the screw or the bolt is arranged in the mounting hole 15b and the auxiliary mounting hole.
Furthermore, the wear-resistant part is annular, and the wear-resistant part is fixedly connected with the outer end face of the limiting part 15.
Further, an annular groove 15a is formed in the outer end face of the limiting member 15; the wear part comprises a wear ring 14; the wear-resistant ring 14 is in interference fit with the annular groove 15a to realize the connection between the wear-resistant ring 14 and the limiting piece 15; the height of the wear ring 14 is greater than the depth of the annular recess 15 a.
Example 2
As shown in fig. 4 and 5, the difference between the present embodiment and embodiment 1 is that the limiting member 15 is fixedly connected to the bearing hole by interference fit; specifically, the method comprises the following steps:
an annular first bulge with the outer diameter equal to that of the limiting part 15 and the inner diameter smaller than that of the limiting part 15 is arranged at one end of the limiting part 15, an annular second bulge with the inner diameter equal to that of the bearing hole and the outer diameter smaller than that of the bearing hole is arranged on the outer end face of the bearing bulge, and the inner wall face of the first bulge is in interference fit with the outer wall face of the second bulge to realize the fixed connection of the limiting part 15 and the outer end face of the bearing bulge;
the height of the first protrusion is less than or equal to the height of the second protrusion.
Example 3
As shown in fig. 6 and 7, the difference between the present embodiment and embodiment 1 is that the limiting member 15 is fixedly connected to the bearing hole by interference fit; specifically, the method comprises the following steps:
furthermore, one end of the limiting member 15 is provided with an annular third protrusion having an inner diameter equal to the inner diameter of the limiting member 15 and an outer diameter smaller than the outer diameter of the limiting member 15, the outer end surface of the bearing protrusion is provided with an annular fourth protrusion having an outer diameter equal to the outer diameter of the bearing hole and an inner diameter smaller than the inner diameter of the bearing hole, and the outer wall surface of the third protrusion is in interference fit with the inner wall surface of the fourth protrusion to realize the fixed connection of the limiting member 15 and the outer end surface of the bearing protrusion;
the height of the third protrusion is greater than or equal to the height of the fourth protrusion.
Example 4
As shown in fig. 8 and 9, the present embodiment is different from embodiment 3 in that the wear-resistant member includes a wear-resistant ring (14a) made of a wear-resistant material and attached to the outer end surface of the stopper.
The wear-resistant material 14a has strong wear resistance and good lubricity, and the eccentric sleeve is contacted with the eccentric sleeve when moving upwards, so that power consumption and other faults caused by contact friction are greatly reduced.
Example 5
The difference between this embodiment and embodiment 4 is that the wear-resistant member includes a wear-resistant coating applied to the outer end surface of the limiting member.
Further, the wear-resistant coating is fully distributed on the outer end face of the limiting member 15.
Example 6
As shown in fig. 10, the present invention also provides a scroll compressor including any one of the above-described orbiting scroll 3, based on the same inventive concept.
Further, the scroll compressor comprises a shell assembly, a motor, a crankshaft 8, a movable scroll 3 and a fixed scroll 2, wherein the motor, the crankshaft 8, the movable scroll 3 and the fixed scroll are respectively arranged in the shell assembly and are sequentially connected; an eccentric sleeve 13 is sleeved on an eccentric pin at the top end of the crankshaft 8, and a radial bearing 17 is arranged between the eccentric sleeve 13 and a bearing hole of the movable scroll plate 3; the shell assembly comprises a shell 7 and a handpiece cover 1 hermetically connected with an opening of the shell 7, an air suction port 11 is arranged on the side surface of the bottom end of the shell 7, and oil content 20 is arranged on the handpiece cover 1; an exhaust valve assembly 19 is arranged on the fixed scroll 2; the motor comprises a motor rotor 9 and a motor stator 10, the crankshaft 8 is connected with the motor rotor 9, a support 4 is arranged in the middle of the casing 7, the crankshaft 8 penetrates through the support 4, a main bearing 5 fixed in the support 4 is sleeved at the upper end of a main shaft of the crankshaft 8, an auxiliary bearing 12 fixed at the bottom of the casing 7 is sleeved at the lower end of the main shaft of the crankshaft 8, and a shaft seal 6 is further arranged between the support 4 and the main shaft of the crankshaft 8; a radial bearing inner ring 17b of the radial bearing 17 is connected with the eccentric sleeve 13 in an interference fit manner, and a radial bearing outer ring 17a of the radial bearing 17 is connected with the inner wall of a bearing hole of the movable scroll 3 in an interference fit manner; and an automatic transmission preventing mechanism 18 is arranged outside the bearing hole on the back surface of the movable scroll 3.
The inner diameter of the limiting part is larger than the inner diameter of the radial bearing outer ring of the radial bearing.
When the orbiting scroll provided in example 2 is mounted, the outer end surface of the radial bearing 17 is flush with the outer end surface of the second projection.
When the orbiting scroll provided in embodiment 3 is mounted, the outer end surface of the radial bearing 17 is flush with the inner end surface of the fourth projection.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.
For a software implementation, the techniques described herein may be implemented by means of units performing the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or make a contribution to the prior art, or may be implemented in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (16)

1. A movable scroll is characterized in that,
the back of the movable scroll (3) is provided with an annular bearing bulge coaxial with the movable scroll, the inner cavity of the bearing bulge forms a bearing hole, a radial bearing (17) is arranged in the bearing hole, and an eccentric pin and an eccentric sleeve (13) at the top end of a crankshaft (8) are arranged in the radial bearing (17);
the outer end face of the bearing bulge is provided with a limiting piece (15); the outer end face of the limiting piece (15) is provided with a wear-resistant piece, and the outer diameter of the limiting piece (15) is smaller than that of the bearing protrusion; the inner diameter of the limiting piece (15) is smaller than that of the bearing protrusion; the inner diameter of the limiting part is larger than the inner diameter of the radial bearing outer ring of the radial bearing (17).
2. A orbiting scroll according to claim 1, characterised in that said stop (15) is annular; the limiting piece (15) is fixedly connected with the outer end face of the bearing protrusion.
3. The movable scroll according to claim 2, wherein the limiting member (15) has a number of mounting holes (15b) which is greater than 1 and parallel to the axial direction of the limiting member, the outer end surface of the bearing protrusion is correspondingly provided with auxiliary mounting holes, and the limiting member (15) is fixedly connected with the outer end surface of the bearing protrusion through a fixing member (16) which penetrates through the mounting holes (15b) and the auxiliary mounting holes after being attached.
4. A orbiting scroll according to claim 2, characterised in that the stop (15) is fixedly connected to the bearing boss by interference fit.
5. The movable scroll plate according to claim 4, wherein one end of the limiting member (15) is provided with an annular first protrusion having an outer diameter equal to the outer diameter of the limiting member (15) and an inner diameter smaller than the inner diameter of the limiting member (15), the outer end surface of the bearing protrusion is provided with an annular second protrusion having an inner diameter equal to the inner diameter of the bearing protrusion and an outer diameter smaller than the outer diameter of the bearing protrusion, and the inner wall surface of the first protrusion is in interference fit with the outer wall surface of the second protrusion to fixedly connect the limiting member (15) and the outer end surface of the bearing protrusion;
the height of the first protrusion is less than or equal to the height of the second protrusion.
6. The movable scroll plate according to claim 4, wherein one end of the limiting member (15) is provided with an annular third protrusion having an inner diameter equal to the inner diameter of the limiting member (15) and an outer diameter smaller than the outer diameter of the limiting member (15), the outer end surface of the bearing protrusion is provided with an annular fourth protrusion having an outer diameter equal to the outer diameter of the bearing protrusion and an inner diameter smaller than the inner diameter of the bearing protrusion, and the outer wall surface of the third protrusion is in interference fit with the inner wall surface of the fourth protrusion to fixedly connect the limiting member (15) and the outer end surface of the bearing protrusion;
the height of the third protrusion is greater than or equal to the height of the fourth protrusion.
7. The orbiting scroll according to claim 1, characterized in that the wear part is ring-shaped and is fixedly connected to the outer end face of the stopper (15).
8. A orbiting scroll according to claim 7, characterised in that the outer end face of the stop (15) is provided with an annular groove (15 a); the wear part comprises a wear ring (14); the wear-resisting ring (14) is in interference fit with the annular groove (15a) to realize the connection of the wear-resisting ring (14) and the limiting piece (15); the height of the wear ring (14) is greater than the depth of the annular groove (15 a).
9. A orbiting scroll according to claim 7, characterised in that the wear part comprises a wear ring (14a) of wear resistant material abutting the outer end face of the stop part (15).
10. The orbiting scroll according to claim 7, characterized in that the wear part comprises a wear resistant coating applied to the outer end face of the stop part (15).
11. A orbiting scroll according to claim 10, characterised in that the abradable coating is applied over the outer end face of the stopper (15).
12. A scroll compressor, characterized by comprising a movable scroll (3) according to any one of claims 1 to 11.
13. A scroll compressor according to claim 12, further comprising a housing assembly, a motor disposed within the housing assembly, a crankshaft (8) in driving connection with the motor, and a fixed scroll (2) meshing with the orbiting scroll (3); an eccentric sleeve (13) is sleeved on an eccentric pin at the top end of the crankshaft (8), and a radial bearing (17) is arranged between the eccentric sleeve (13) and the inner wall of the bearing bulge of the movable scroll (3).
14. A scroll compressor according to claim 13, wherein the inner diameter of said retainer (15) is larger than the inner diameter of the radial bearing outer ring (17a) of said radial bearing (17).
15. The scroll compressor of claim 14, wherein one end of the limiting member (15) is provided with an annular first protrusion having an outer diameter equal to the outer diameter of the limiting member (15) and an inner diameter smaller than the inner diameter of the limiting member (15), the outer end surface of the bearing protrusion is provided with an annular second protrusion having an inner diameter equal to the inner diameter of the bearing protrusion and an outer diameter smaller than the outer diameter of the bearing protrusion, and the inner wall surface of the first protrusion is in interference fit with the outer wall surface of the second protrusion to fixedly connect the limiting member (15) and the outer end surface of the bearing protrusion; the outer end face of the radial bearing (17) is flush with the outer end face of the second protrusion.
16. The scroll compressor of claim 14, wherein one end of the limiting member (15) is provided with an annular third protrusion having an inner diameter equal to the inner diameter of the limiting member (15) and an outer diameter smaller than the outer diameter of the limiting member (15), the outer end surface of the bearing protrusion is provided with an annular fourth protrusion having an outer diameter equal to the outer diameter of the bearing protrusion and an inner diameter smaller than the inner diameter of the bearing protrusion, and the outer wall surface of the third protrusion is in interference fit with the inner wall surface of the fourth protrusion to fixedly connect the limiting member (15) and the outer end surface of the bearing protrusion; the outer end face of the radial bearing (17) is flush with the inner end face of the fourth protrusion.
CN201811244669.XA 2018-10-24 2018-10-24 Movable scroll plate and scroll compressor Active CN109488589B (en)

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