Oldham ring assembly and scroll compressor
By setting vertical grooves on the key and keyway surfaces of the cross-slip ring assembly to collect friction debris, the problem of severe key wear in scroll compressors is solved, enabling reliable operation under higher temperature and low lubrication conditions and expanding application scenarios.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- COPELAND CLIMATE TECN (SUZHOU) CO LTD
- Filing Date
- 2025-12-30
- Publication Date
- 2026-07-09
AI Technical Summary
Existing cross-slip ring assemblies in scroll compressors suffer from severe wear on the working surfaces of keyed components, especially due to insufficient lubrication and inadequate cooling caused by friction. Furthermore, the existing hardened materials are prone to generating debris, which exacerbates the wear.
Vertically extending grooves are provided on the working surface or sidewall of the key and keyway of the cross-slip ring assembly to collect friction-generated debris, reduce wear, and enhance lubrication and cooling by keeping the grooves covered during the operation of the scroll compressor.
It effectively reduces the wear of keyed components, improves the reliability of scroll compressors under high temperature, low flow and poor lubrication conditions, and expands its application scenarios and scope.
Smart Images
Figure CN2025147162_09072026_PF_FP_ABST
Abstract
Description
Cross-slip ring assembly and scroll compressor
[0001] This application claims priority to the following Chinese patent application: Chinese Patent Application No. 202520028228.5, filed on January 2, 2025, with the invention title "Cross-ring Assembly and Scroll Compressor". The entire contents of the aforementioned patent application are incorporated herein by reference. Technical Field
[0002] This disclosure relates to the field of scroll compressors, and in particular to cross slip rings for scroll compressors. Background Technology
[0003] The content in this section provides only background information related to this disclosure and may not constitute prior art.
[0004] A scroll compressor is a positive displacement compressor that has a compression mechanism consisting of a moving scroll and a stationary scroll. The moving scroll and the stationary scroll cooperate to form a scroll compression chamber. In order to restrict the movement of the moving scroll component relative to the stationary scroll to a translational rotation, the scroll compressor is equipped with a cross-slip ring assembly that effectively prevents the moving scroll from rotating on its own axis.
[0005] Figure 1 illustrates a prior art cross-slip ring assembly for a scroll compressor. The cross-slip ring assembly 100 includes a cross-slip ring body 110 and a pair of first keys 120 and a pair of second keys 130 extending from the cross-slip ring body 110. Each of the first keys 120 engages with a first keyway disposed in the stationary scroll of the scroll compressor, and each of the second keys 130 engages with a second keyway disposed in the moving scroll of the scroll compressor. As shown in Figure 1, when the moving scroll of the scroll compressor moves relative to the stationary scroll, the working surfaces (i.e., the force-bearing surfaces) of the two first keys 120 are subjected to forces F1 and F2 in opposite directions, respectively, and the working surfaces (i.e., the force-bearing surfaces) of the two second keys 130 are subjected to forces F1 and F2 in opposite directions, respectively. 1a and F 1b This mechanism prevents the moving vortex from rotating on its own and restricts the motion of the moving vortex relative to the stationary vortex to a translational motion.
[0006] Figures 2a and 2b show schematic diagrams of the engagement of the fixed and moving scrolls of a prior art scroll compressor with corresponding keys of a cross-slip ring assembly. As shown in Figure 2a, the first key 120 of the cross-slip ring assembly 100 is fitted into the first keyway of the fixed scroll 200 of the scroll compressor. As shown in Figure 2b, the second key 130 of the cross-slip ring assembly 100 is fitted into the second keyway of the moving scroll 300 of the scroll compressor. Since the first keyway of the fixed scroll 200 is positioned vertically above the second keyway of the moving scroll 300 in the scroll compressor, the height of the first key 120 of the cross-slip ring assembly 100 is greater than the height of the second key 130, allowing the first key 120 and the second key 130 to be fitted into the first keyway and the second keyway, respectively. During operation of the scroll compressor, the first key 120 fitted into the first keyway reciprocates linearly in the radial direction within the first keyway, and the second key 130 fitted into the second keyway reciprocates linearly in the radial direction within the second keyway. During the movement of the first key 120 and the second key 130, their working surfaces come into contact with and rub against the sidewalls of the corresponding keyways, resulting in increased temperature and wear on the contact surfaces. The contact surfaces between the first key and the first keyway, and between the second key and the second keyway, typically cannot be lubricated by active oil supply; instead, they rely on a small amount of oil circulating in the refrigerant for lubrication. Specifically, for the contact surface between the first key and the first keyway, because the first keyway has an enveloping design (i.e., the first keyway envelops the first key), and the first key is positioned vertically at a relatively high level, and there is no active oil supply, sufficient refrigerant and lubricating oil cannot be guaranteed to flow to this contact surface for cooling and lubrication. This results in insufficient cooling and lubrication, leading to more severe wear on the working surface of the first key.
[0007] To address the aforementioned issues, one existing solution is to use a reinforcing material with a surface-hardened treatment as the substrate for the cross-ring assembly. However, while this can provide some wear resistance to the keys of the cross-ring assembly, it has the following drawback: because the reinforcing material contains primary silicon, it is hard but brittle, easily generating debris during friction, thus further exacerbating wear on the contact surfaces.
[0008] Therefore, there is a need for an improved cross slip ring assembly that can at least alleviate at least one of the aforementioned problems. Summary of the Invention
[0009] This section provides a general summary of the disclosure, rather than a full disclosure of the entire scope or all features of the disclosure.
[0010] The purpose of this disclosure is to solve one or more of the technical problems mentioned above. For example, the technical solution of this disclosure can reduce the wear of the working surface of the key mating part of the cross slip ring assembly that mates with the key mating part of the scroll compressor.
[0011] According to one aspect of this disclosure, a cross-slip ring assembly is provided for use in a scroll compressor. The cross-slip ring assembly includes: a cross-slip ring body; and a key extending from the cross-slip ring body and for engaging with a keyway in a key engagement component of the scroll compressor. The key includes a mating portion for engaging with the keyway, the mating portion having a working surface as a force-bearing side surface, wherein grooves are provided only on the working surface in both the working surface and the non-working surface opposite to the working surface.
[0012] In the aforementioned cross slip ring assembly, the groove is located on the radially outer portion of the working surface.
[0013] In the aforementioned cross-shaped slip ring assembly, the groove is a vertically extending groove.
[0014] In the aforementioned cross-shaped slip ring assembly, the groove extends vertically from the distal surface of the mating part.
[0015] In the aforementioned cross-slip ring assembly, the projected area of the groove is 15mm². 2 Up to 22mm 2 between.
[0016] In the aforementioned cross-slip ring assembly, the groove is constructed such that, when the mating part of the key is assembled into the keyway, the proximal edge of the groove is aligned with the proximal edge of the sidewall of the keyway opposite to the working surface, or the proximal edge of the groove is further away from the cross-slip ring body in the vertical direction than the proximal edge of the sidewall of the keyway opposite to the working surface, so that during the operation of the scroll compressor, the groove is always completely covered by the sidewall of the keyway opposite to the working surface.
[0017] According to another aspect of this disclosure, a scroll compressor is also provided, which includes key-fitted components and a cross-slip ring assembly as described above.
[0018] According to another aspect of this disclosure, a scroll compressor is also provided, the scroll compressor comprising: a cross-slip ring assembly, the cross-slip ring assembly including a key, wherein the key includes a working surface serving as a force-bearing side surface; a key mating component, the key mating component including a keyway for receiving the key of the cross-slip ring assembly, wherein the keyway includes a working sidewall opposite to the working surface, wherein the working sidewall of the keyway is provided with a groove.
[0019] In the aforementioned scroll compressor, the groove is a vertically extending groove.
[0020] In the aforementioned scroll compressor, the groove extends vertically from the near edge of the working sidewall.
[0021] In the aforementioned scroll compressor, the groove is constructed such that during the operation of the scroll compressor, the groove is always completely covered by the working surface.
[0022] In the aforementioned scroll compressor, the groove is located on the radially outer portion of the working sidewall of the keyway.
[0023] In the aforementioned scroll compressor, the keyed components include a stationary scroll, a main bearing housing, or a moving scroll.
[0024] The advantages of the cross-ring assembly and scroll compressor according to this disclosure are as follows. A groove is provided on the working surface of the key mating portion of the cross-ring assembly according to this disclosure or on the working sidewall of the keyway of the key-mating component of the scroll compressor according to this disclosure. During operation of the scroll compressor, this groove can collect debris generated by friction between the working surface of the key mating portion of the cross-ring assembly and the sidewall of the keyway of the key-mating component. This reduces wear on the working surface of the key mating portion of the cross-ring assembly, allowing the scroll compressor to operate reliably under higher temperatures, lower mass flow rates, and poorer lubrication conditions, thereby greatly expanding the application scenarios and scope of the scroll compressor. Attached Figure Description
[0025] The following figures illustrate the technical features of one or more embodiments of the cross-slip ring assembly of a conventional scroll compressor and the scroll compressor of this disclosure, in which:
[0026] Figure 1 is a schematic diagram of a prior art cross slip ring assembly, showing the force direction of each key in the cross slip ring assembly;
[0027] Figures 2a and 2b are schematic diagrams showing the corresponding key connections between the fixed scroll and moving scroll of a prior art scroll compressor and the cross slip ring assembly.
[0028] Figure 3 is a schematic diagram of a cross slip ring assembly according to a first embodiment of the present disclosure;
[0029] Figure 4a and Figure 4b are respectively a right view and a top view of a first key of a cross slip ring assembly according to a first embodiment of the present disclosure, wherein a groove is shown on the working surface of the mating part of the first key.
[0030] Figure 5 is a schematic diagram of the engagement of a first key of a cross slip ring assembly according to a first embodiment of the present disclosure with the engagement of a first keyway of a fixed vortex.
[0031] Figure 6 is a perspective view of the fixed scroll of a scroll compressor according to a second embodiment of the present disclosure;
[0032] Figure 7 is an enlarged view of a keyway of a scroll compressor according to a second embodiment of the present disclosure, wherein a groove provided on the working sidewall of the keyway is shown. Detailed Implementation
[0033] The present disclosure will now be described in detail with reference to the accompanying drawings and specific embodiments. This detailed description is for illustrative purposes only and is not intended to limit the scope of the disclosure or its applications or uses.
[0034] The first embodiment of this disclosure provides a cross-slip ring assembly for a scroll compressor, the cross-slip ring assembly having a groove provided on the working surface of the mating portion of a first key to reduce wear on the working surface.
[0035] First, the overall structure and working principle of the cross slip ring assembly according to the first embodiment of the present disclosure will be described in summary with reference to Figures 3-5.
[0036] Figure 3 illustrates a cross-slip ring assembly according to a first embodiment of the present disclosure, used in a scroll compressor. As shown in Figure 3, the cross-slip ring assembly 10 includes a cross-slip ring body 11 and a key, which includes a first key and a second key, for example, a pair of first keys 12, 13 and a pair of second keys 14, 15. The key of the cross-slip ring assembly 10 is used to engage with key-fitting components of the scroll compressor. For example, the pair of first keys 12, 13 extends from the cross-slip ring body 11 and is used to engage with a first keyway disposed in the stationary scroll of the scroll compressor, and the pair of second keys 14, 15 extends from the cross-slip ring body 11 and is used to engage with a second keyway disposed in the moving scroll of the scroll compressor. The line connecting the pair of first keys 12, 13 and the line connecting the pair of second keys 14, 15 may be substantially perpendicular. Although in this embodiment, the key-fitting components are exemplified as a stationary scroll and a moving scroll, the key-fitting components may also be a main bearing housing, and the main bearing housing may include a keyway for receiving at least one first key. The first key 12 includes a base 123 connected to the cross-shaped slip ring body 11 and a mating portion 124 (shown in FIG. 4a) extending from the base, wherein the mating portion 124 is for fitting into and is surrounded by the first keyway. The mating portion 124 of the first key 12 has two opposing side surfaces facing the sidewall of the first keyway, one of which is a force-bearing side surface that bears a large force during the operation of the scroll compressor and thus serves as the working surface of the first key. During the operation of the scroll compressor, the moving scroll will rotate relative to the stationary scroll in a translational manner. For example, for the first key 12, the right side of the key 12 in FIG. 3 is the working surface 121 (shown in FIG. 4a), while for the first key 13, the left side of the key 13 in FIG. 3 is the working surface. At least one working surface of the first key is provided with a groove 16, which can be used to accommodate debris generated during the friction of the working surface, thereby reducing the wear of the working surface. It should be noted that the working surface 121 of the mating portion 124 of the first key 12 has a groove only on the working surface 121, and no groove is provided on the non-working surface. Compared with the design where grooves are provided on both the working and non-working surfaces of the mating portion of the first key, this design of the present disclosure ensures greater strength of the key in the cross slip ring assembly and simplifies processing. Preferably, a groove is provided on the working surface of each first key. In this embodiment, a groove 16 is provided on the working surface 121 of the mating portion 124 of the first key 12, and the specific structure of the groove 16 will be described in detail below with reference to Figures 4a and 4b. Although a groove is provided on the working surface of the mating portion of the first key in this embodiment, a groove with the same or similar configuration may also be provided on the working surface of the mating portion of the second key to reduce wear on the working surface of the second key.Furthermore, preferably, the first key (or mating portion of the first key) of the cross slip ring assembly according to the first embodiment of the present disclosure includes a base material portion of B390 alloy and a hard oxide layer covering the outer surface of the base material portion to further enhance its wear resistance.
[0037] Figure 4a is a right view of a first key of a cross slip ring assembly according to the first embodiment of the present disclosure, i.e., a view of the first key viewed from the right side of Figure 3. Figure 4b is a top view of a first key of a cross slip ring assembly according to the first embodiment of the present disclosure, i.e., a view of the first key viewed from above Figure 3. In both Figures 4a and 4b, a groove is shown on the working surface of the mating portion of the first key. As shown in Figure 4a, a groove 16 is provided on the working surface 121 of the mating portion 124 of the first key 12. The groove 16 can be provided on the radially outer portion of the working surface 121 (i.e., the portion outside the center line C of the working surface 121, the right half of the working surface 121 in Figure 4a), and the groove can be provided only on the radially outer portion of the working surface 121. The reason for this design is that during the operation of the scroll compressor, the radially outer portion of the working surface 121 of the mating portion 124 of the first key 12 experiences greater local stress due to friction, making it prone to wear and generating debris. Placing the groove 16 on the radially outer portion of the working surface 121 helps collect debris and reduces or even prevents further wear on the working surface. Preferably, the groove 16 can be configured as a vertically extending groove, extending vertically downward from the top surface 122 of the mating portion 124 of the first key 12 (i.e., the distal surface, which is located on the side of the mating portion away from the cross-shaped slip ring body in the vertical direction). Optionally, the groove 16 is constructed such that, when the mating part 124 of the first key 12 is fitted into the first keyway, the lower edge of the groove 16 (i.e., the proximal edge, which is the edge of the groove in the vertical direction close to the cross-shaped slip ring body) is aligned with the lower edge of the side wall of the first keyway opposite to the working surface (i.e., the proximal edge, which is the edge of the side wall in the vertical direction close to the cross-shaped slip ring body), thereby increasing the area of the groove opening to collect debris more effectively; or, when the mating part 124 of the first key 12 is fitted into the first keyway, the groove 16 extends to a certain distance from the lower edge of the side wall of the first keyway opposite to the working surface, such that the lower edge of the groove is further away from the cross-shaped slip ring body in the vertical direction than the lower edge of the side wall of the keyway opposite to the working surface, so as to more reliably seal the debris in the groove and ensure that the debris does not leave the groove. Referring to Figure 4b, which shows the groove 16 from another angle, the groove 16 is shown to be located on the radially outer portion of the working surface 121 of the mating portion 124 of the first key 12 and extends from the top surface 122 of the mating portion 124 of the first key 12. Preferably, the bottom surface of the groove 16 has an arc-shaped cross-section in this figure. Preferably, the projected area of the groove 16 can be 15 mm². 2 Up to 22mm 2 Between. Here, the projected area of groove 16 is defined as the area of the bottom surface of the groove, that is, the product of the longitudinal length of the groove and the arc length in the cross-section of the groove.
[0038] Figure 5 is a schematic diagram of the engagement of a first key of a cross-slip ring assembly according to the first embodiment of the present disclosure with the first keyway of the fixed scroll. The view is taken from the front of the first key, i.e., from the lower side of Figure 3. As shown in Figure 5, in the assembled state of the scroll compressor, the engagement portion 124 of a first key 12 of the cross-slip ring assembly according to the first embodiment of the present disclosure is slidably fitted into the first keyway 17 of the fixed scroll of the scroll compressor. Preferably, the groove 16 (shown in dashed lines in Figure 5) provided on the working surface 121 of the engagement portion 124 of the first key 12 is configured such that, during the operation of the scroll compressor, the groove 16 is always completely covered by the sidewall of the first keyway opposite to the working surface 121. Therefore, debris collected in the groove can be sealed within the groove, thus preventing adverse effects on the operation of the scroll compressor.
[0039] The working principle of the cross slip ring assembly according to the first embodiment of this disclosure and the advantageous technical effects obtained will be described below.
[0040] In the assembled state of the scroll compressor including the cross-slip ring assembly according to the first embodiment of this disclosure, the mating portion of the first key of the cross-slip ring assembly is fitted into the first keyway of the stationary scroll of the scroll compressor. During the operation of the scroll compressor, the moving scroll revolves relative to the stationary scroll in a translational manner, and the mating portion of the first key slides in the first keyway to prevent the moving scroll from rotating. The sliding of the mating portion of the first key in the first keyway is a reciprocating linear motion in the radial direction, and due to the large relative force between the mating portion of the first key and the first keyway, a large friction is generated between the working surface (i.e., the force-bearing side surface) of the mating portion of the first key and the sidewall of the opposing first keyway. During this friction process, a large concentrated stress is formed at the radially outer portion of the working surface of the mating portion of the first key, thereby easily causing wear and generating debris at the radially outer portion of the working surface of the mating portion of the first key. If these debris cannot be removed, the wear surface and wear depth will continuously expand, thereby aggravating the wear of the entire friction surface. In the cross-shaped slip ring assembly according to the first embodiment of this disclosure, since a groove is provided on the radially outer portion of the working surface of the mating part of the first key, wear-related debris can be easily collected and sealed in the groove, thereby preventing these debris from continuing to slide between the mating part of the first key and the contact surface of the first key groove to form high stress, thus avoiding greater wear. During the sliding of the mating part of the first key in the first key groove, the groove sweeps across the sidewall of the opposing first key groove (i.e., moves in the radial direction) as the mating part of the first key slides, thereby collecting debris substantially across the entire friction surface, preventing localized high stress formation, and allowing the friction surface to quickly form a low-stress distribution contact through running-in, thereby further reducing wear on the working surface of the mating part of the first key. Furthermore, the movement of the groove can enhance the cooling and lubrication effect of the friction surface, thereby systematically enhancing the wear resistance of the working surface of the mating part of the first key of the cross-shaped slip ring. Therefore, the cross-slip ring assembly according to the first embodiment of this disclosure, through simple structural optimization, enables the scroll compressor including the cross-slip ring assembly to operate reliably under higher temperatures, lower mass flow rates, and worse lubrication conditions, thereby greatly expanding the application scenarios and scope of the scroll compressor.
[0041] A second embodiment of this disclosure provides a scroll compressor in which a groove is provided on the working sidewall of the keyway of the fixed scroll to reduce wear on the working surface of the first key of the cross-slip ring assembly of the scroll compressor.
[0042] The general structure and working principle of the scroll compressor according to the second embodiment of the present disclosure will be described in summary below with reference to Figures 6 and 7.
[0043] Figure 6 is a perspective view of the fixed scroll of a scroll compressor according to a second embodiment of the present disclosure. Figure 7 is an enlarged view of the keyway of the fixed scroll of a scroll compressor according to a second embodiment of the present disclosure, showing a groove provided on the working side wall of the keyway.
[0044] A scroll compressor according to a second embodiment of the present disclosure includes a compression mechanism consisting of a stationary scroll 20 and a moving scroll (not shown). During operation of the scroll compressor, the moving scroll rotates relative to the stationary scroll in a translational manner to form a compression chamber. The scroll compressor also includes a cross-slip ring assembly (not shown), which is substantially the same as the cross-slip ring assembly according to a first embodiment of the present disclosure, except that the key of the cross-slip ring assembly for engaging with a keyway in a key-fitting component does not necessarily have a groove. The key-fitting component may include a stationary scroll, a moving scroll, or a main bearing housing. In this embodiment, the configuration of the keyway of the stationary scroll, which is a key-fitting component, and the engagement of the keyway with the corresponding key of the cross-slip ring assembly will be described in detail. The cross-slip ring assembly includes a first key, for example, a pair of first keys, for engaging with a first keyway provided in the stationary scroll 20 of the scroll compressor. The stationary scroll 20 of the scroll compressor includes a pair of first keyways 21 for receiving the pair of first keys of the cross-slip ring assembly. Each first keyway 21 has two opposing sidewalls, one of which faces the working surface of the first key and thus serves as the working sidewall of the first keyway 21. At least one working sidewall 22 of the first keyway 21 is provided with a groove 23 for accommodating debris generated during friction between the working sidewall 22 and the working surface of the first key of the cross-ring assembly, thereby reducing wear on the working surface. As shown in FIG7, preferably, the groove 23 can be provided at the radially outer portion of the working sidewall 22 (i.e., the portion outside the centerline C1 of the working sidewall 22, the upper left portion of the working sidewall 22 in FIG7), for example, a groove is provided only at the radially outer portion of the working sidewall. Preferably, the groove 23 can be configured as a vertically extending groove and extends vertically upward from the lower edge (i.e., the proximal edge, which is the edge of the working sidewall closer to the cross-ring body in the vertical direction) of the working sidewall 22 of the first keyway 21. Preferably, the groove 23 provided on the working sidewall 22 of the first keyway 21 is configured such that, during the operation of the scroll compressor, the groove 23 is always completely covered by the working surface of the first key. Thus, debris collected in the groove can be sealed within the groove, thereby preventing any adverse effect on the operation of the scroll compressor. Although this embodiment describes in detail the configuration of the keyway of the stationary scroll and the mating of the keyway with the corresponding key of the cross-slip ring assembly, keyways with the same or similar configurations can also be provided in the main bearing housing and / or the moving scroll for mating with the corresponding key of the cross-slip ring assembly, thereby reducing wear on the working surface of the corresponding key.
[0045] The working principle of the scroll compressor according to the second embodiment of this disclosure and the advantageous technical effects obtained will be described below.
[0046] In the assembled state of the scroll compressor according to the second embodiment of this disclosure, the first key of the scroll compressor's cross-slip ring assembly is fitted into the first keyway of the fixed scroll of the scroll compressor. During the operation of the scroll compressor, the moving scroll rotates relative to the fixed scroll in a translational manner, and the first key slides in the first keyway to prevent the moving scroll from rotating. The sliding of the first key in the first keyway is a reciprocating linear motion in the radial direction, and due to the large relative force between the first key and the first keyway, friction occurs between the working surface of the first key (i.e., the force-bearing side surface) and the working sidewall of the opposite first keyway. During this friction process, a large concentrated stress is formed at the radially outer portion of the working surface of the first key, thereby easily causing wear and generating debris at the radially outer portion of the working surface of the first key. If these debris cannot be removed, the wear surface and wear depth will continuously expand, thereby aggravating the wear of the entire friction surface. In the scroll compressor according to the second embodiment of this disclosure, since a groove is provided on the radially outer portion of the working sidewall of the first keyway, wear-induced debris can be easily collected and sealed in the groove, thereby preventing these debris from continuing to slide between the contact surface of the first key and the first keyway to form high stress and thus avoiding greater wear. Furthermore, the groove also enhances the cooling and lubrication effect of the friction surface, thereby systematically enhancing the wear resistance of the working surface of the first key of the cross-slip ring. Therefore, the scroll compressor according to the second embodiment of this disclosure, through simple structural optimization, enables reliable operation of the scroll compressor under higher temperatures, lower mass flow rates, and poorer lubrication conditions, thereby greatly expanding the application scenarios and scope of the scroll compressor.
[0047] Furthermore, it should be noted that although the cross slip ring assembly according to the first embodiment of the present disclosure and the scroll compressor according to the second embodiment of the present disclosure have been described in the foregoing embodiments, it is understood that the technical solutions in the above embodiments are merely illustrative and not restrictive, and various modifications may be made, such as those described below.
[0048] According to the first embodiment, the first key of the cross-shaped slip ring assembly does not necessarily use B390 alloy as the base material and does not necessarily include an outer surface hard oxide layer covering the base material. Other materials with lower wear resistance can be used as the base material of the first key of the cross-shaped slip ring assembly, and the outer surface hard oxide layer covering the base material may not be included. The groove on the working surface of the mating portion of the first key of the cross-shaped slip ring assembly according to the first embodiment and the groove on the working sidewall of the first keyway of the scroll compressor according to the second embodiment do not necessarily have to be vertically extending grooves, but can have other orientations, such as obliquely extending grooves. The groove on the working surface of the mating portion of the first key of the cross-shaped slip ring assembly according to the first embodiment does not necessarily have to be completely covered by the sidewall of the opposing first keyway during the operation of the scroll compressor, but can only be partially covered. The groove on the working sidewall of the first keyway of the scroll compressor according to the second embodiment does not necessarily have to be located at the radially outer portion of the working sidewall, but can be located at other positions on the working sidewall. According to the second embodiment, the groove on the working sidewall of the first keyway of the scroll compressor in the fixed scroll compressor does not need to extend from the lower edge of the working sidewall, but can be a certain distance away from the lower edge of the working sidewall. Furthermore, the groove on the working sidewall of the first keyway of the scroll compressor in the fixed scroll compressor in the second embodiment does not need to be completely covered by the working surface of the opposing first key during the operation of the scroll compressor, but can be only partially covered.
[0049] Although this disclosure has been described with reference to exemplary embodiments, it should be understood that this disclosure is not limited to the specific embodiments described and shown herein, and various changes can be made to the exemplary embodiments by those skilled in the art without departing from the scope defined by the claims.
Claims
1. A cross-slip ring assembly for use in a scroll compressor, the cross-slip ring assembly comprising: Cross-shaped slip ring body; as well as A key extending from the cross-shaped slip ring body and for engaging with a keyway in a key-fitting component of the scroll compressor, wherein the key includes a mating portion for engaging with the keyway, the mating portion having a working surface as a force-bearing side surface. The feature is that a groove is provided only on the working surface of the mating part and on the non-working surface opposite to the working surface.
2. The cross slip ring assembly according to claim 1, characterized in that, The groove is located on the radially outer portion of the working surface.
3. The cross slip ring assembly according to claim 1 or 2, characterized in that, The groove is a vertically extending groove.
4. The cross slip ring assembly according to claim 3, characterized in that, The groove extends vertically from the distal surface of the mating part.
5. The cross slip ring assembly according to claim 4, characterized in that, The projected area of the groove is 15mm. 2 Up to 22mm 2 between.
6. The cross slip ring assembly according to claim 3, characterized in that, The groove is constructed such that, when the mating part of the key is assembled into the keyway, the proximal edge of the groove is aligned with the proximal edge of the sidewall of the keyway opposite to the working surface, or The proximal edge of the groove is further away from the cross-shaped slip ring body in the vertical direction than the proximal edge of the sidewall of the keyway opposite to the working surface. This ensures that during the operation of the scroll compressor, the groove is always completely covered by the sidewall of the keyway opposite to the working surface.
7. A scroll compressor, characterized in that, The scroll compressor includes keyed components and a cross-slip ring assembly according to any one of claims 1 to 6.
8. A scroll compressor, the scroll compressor comprising: A cross slip ring assembly, the cross slip ring assembly including a key, wherein the key includes a working surface as a force-bearing side surface; A key-fitting component, the key-fitting component including a keyway for receiving the key of the cross slip ring assembly, wherein the keyway includes a working sidewall opposite to the working surface. The keyway is characterized by having a groove on its working sidewall.
9. The scroll compressor according to claim 8, characterized in that, The groove is a vertically extending groove.
10. The scroll compressor according to claim 9, characterized in that, The groove extends vertically from the proximal edge of the working sidewall.
11. The scroll compressor according to claim 10, characterized in that, The groove is constructed such that, during the operation of the scroll compressor, the groove is always completely covered by the working surface.
12. The scroll compressor according to any one of claims 8 to 11, characterized in that, The groove is located on the radially outer portion of the working sidewall of the keyway.
13. The scroll compressor according to any one of claims 7 to 11, characterized in that, The keyed components include a fixed vortex, a main bearing housing, or a moving vortex.