Cross slip ring assembly for scroll compressor and scroll compressor
By setting a avoidance groove on the second key of the cross slip ring assembly, the wear problem of the cross slip ring assembly is solved, and the performance and reliability of the scroll compressor are improved.
Patent Information
- Application Number
- CN202422389511.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-29
AI Technical Summary
In the existing scroll compressor, the second key of the cross slip ring assembly is prone to angular contact with the keyway wall of the fixed scroll member when deflected, resulting in wear and affecting the performance and reliability of the scroll compressor.
A avoiding groove is provided on the second key of the cross slip ring assembly to prevent it from angular contact with the keyway wall of the fixed scroll member and reduce wear.
By setting up a barrier groove, wear of the cross slip ring assembly is reduced, and the performance and reliability of the scroll compressor are improved.
Smart Images
Figure CN223075723U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of compressors, and specifically, to a cross slip ring assembly for a scroll compressor. In addition, it also relates to a scroll compressor including the cross slip ring assembly. Background Art
[0002] This section provides background information related to the present disclosure, and such background information is not necessarily prior art.
[0003] A scroll compressor generally includes a sealed housing assembly, a bearing seat assembly, a motor assembly, a scroll assembly (compression mechanism), and a cross slip ring assembly. The scroll assembly can generally include a moving scroll member and a stationary scroll member. The bearing seat assembly can generally include a main bearing seat and a bearing housed in the main bearing seat. The cross slip ring assembly can cooperate with the moving scroll member and the stationary scroll member or with the moving scroll member and the main bearing seat.
[0004] Figure 1 A perspective schematic view of a cross slip ring assembly 100' according to the related art is shown. Figure 2 A schematic view of the cross slip ring assembly 100' according to the related art assembled with the moving scroll member 210' and the stationary scroll member 220' of the scroll assembly 200' is shown, wherein a partial section is made to show the cooperation between the cross slip ring assembly 100' and the stationary scroll member 220'. Figure 3 Shown is Figure 2 A partial enlarged schematic view at A in
[0005] As Figures 1 to 3 shown, the cross slip ring assembly 100' includes a slip ring body 110' and a first key 120' and a second key 130' extending from the slip ring body 110' in a direction perpendicular to the plane where the slip ring body 110' is located. The first key 120' is used to cooperate with a moving scroll keyway (not shown) of the moving scroll member 210'. The second key 130' is used to cooperate with a stationary scroll keyway 221' of the stationary scroll member 220'.
[0006] During the operation of the scroll compressor, the motor assembly drives the moving scroll member 210', causing the moving scroll keyway of the moving scroll member 210' to reciprocate linearly relative to the corresponding first key 120' of the cross slip ring assembly 100'. At the same time, the moving scroll member 210' causes the second key 130' of the cross slip ring assembly 100' to reciprocate linearly along the fixed scroll keyway 221' of the fixed scroll member 220'. The sliding direction of the second key 130' of the cross slip ring assembly 100' along the fixed scroll keyway 221' of the fixed scroll member 220' is perpendicular to the sliding direction of the moving scroll keyway of the moving scroll member 210' relative to the first key 120' of the cross slip ring assembly 100'. That is to say, the movements of the moving scroll member 210' and the cross slip ring assembly 100' are perpendicular to each other and synchronized at the same frequency, thereby synthesizing a translational movement in which the moving scroll member 210' revolves around the fixed scroll member 220' but cannot rotate on its own. Therefore, the cross slip ring assembly 100' is set as an anti-rotation mechanism to prevent the rotation of the moving scroll member 210', while allowing the moving scroll member 210' to revolve around the fixed scroll member 220' in a translational manner.
[0007] During the 360-degree translational cycle of the moving scroll member 210' relative to the fixed scroll member 220', the second key 130' of the cross slip ring assembly 100' will be stressed (specifically, unevenly stressed during the 360-degree translational cycle) and may be deflected. In addition, when there is system pressure backflow, the moving scroll member 210' will have an instantaneous flip at the moment of exhaust, thereby driving the cross slip ring assembly 100' cooperating with the moving scroll member 210' to also have an instantaneous flip, and further causing the second key 130' of the cross slip ring assembly 100' to be deflected. In the case where the second key 130' of the cross slip ring assembly 100' is deflected, an angular contact will be generated between the second key 130' of the cross slip ring assembly 100' and the keyway wall of the fixed scroll keyway 221' of the fixed scroll member 220' at Figure 3 the B shown. Generally speaking, the fixed scroll member 220' is made of relatively hard cast iron, while the cross slip ring assembly 100' is made of relatively soft aluminum. The relatively hard and sharp end of the keyway wall of the fixed scroll keyway 221' of the fixed scroll member 220' will scrape the relatively soft sliding surface of the second key 130' of the cross slip ring assembly 100', thereby causing wear. After the second key 130' of the cross slip ring assembly 100' is worn, it will lead to a reduction in the performance of the scroll compressor, a deterioration in reliability, and a shortening of the service life. Summary of the Utility Model
[0008] This section provides an overall overview of the present disclosure, rather than a full disclosure of the entire scope of the present disclosure or all of its features.
[0009] The object of the present utility model is to solve or alleviate one or more of the above-mentioned technical problems.
[0010] In particular, an object of the present utility model is to provide an improved cross slip ring assembly, which can avoid angular contact and wear between the second key of the cross slip ring and the keyway wall of the keyway in a fixed member (such as a stationary scroll or a main bearing seat) when the cross slip ring assembly is skewed.
[0011] In one aspect of the present utility model, there is provided a cross slip ring assembly for a scroll compressor, the scroll compressor including a moving scroll and a fixed member, the moving scroll being provided with a first keyway, the fixed member being provided with a second keyway, the cross slip ring assembly including: a slip ring body; a first key extending from the slip ring body in a direction perpendicular to the plane where the slip ring body is located and adapted to cooperate with the first keyway; and a second key extending from the slip ring body in a direction perpendicular to the plane where the slip ring body is located and adapted to cooperate with the second keyway, wherein the second key includes two opposite side surfaces in the circumferential direction of the slip ring body, and at least one of the side surfaces is provided with a relief groove recessed towards the other side surface.
[0012] The cross slip ring assembly provided by the present utility model is provided with a relief groove on the side surface serving as a sliding surface of the second key cooperating with the fixed member. When the second key of the cross slip ring assembly is skewed, the keyway wall of the corresponding keyway in the fixed member cooperating with the second key of the cross slip ring assembly can be located in the relief groove without angular contact with the side surface of the second key, thus reducing the wear of the second key of the cross slip ring assembly.
[0013] Optionally, the relief groove is only provided in the side surface located on the stressed side of the second key. By only providing the relief groove in the side surface located on the stressed side of the second key, it is possible to avoid wear of the second key of the cross slip ring assembly due to angular contact with the keyway wall of the corresponding keyway in the fixed member, while ensuring the required strength of the second key.
[0014] Optionally, the relief groove includes a bottom wall and opposite first and second side walls extending from the bottom wall, the second side wall being farther from the slip ring body than the first side wall, and the relief groove is configured such that when the cross slip ring assembly cooperates with the fixed member, the free end of the keyway wall of the second keyway is located between the first side wall and the second side wall in the extending direction of the second key. When the second key of the cross slip ring assembly is skewed, the free end of the keyway wall of the corresponding keyway in the fixed member cooperating with the second key of the cross slip ring assembly can be located in the relief groove without angular contact with the side surface of the second key, thus reducing the wear of the second key of the cross slip ring assembly.
[0015] Optionally, the connecting portion of the second side wall and the side surface is rounded. The rounded connecting portion can reduce the wear between the connecting portion and the keyway wall of the keyway of the fixing member.
[0016] Optionally, the recessed depth of the avoidance groove is 0.5 mm to 2 mm. When the recessed depth is within the above range, it can effectively avoid the angular contact between the side surface of the second key of the cross slip ring assembly and the keyway wall of the corresponding keyway in the fixing member, thereby avoiding the wear of the second key, and will not have an adverse effect on the strength of the second key.
[0017] Optionally, the fixing member is a stationary scroll member; or, the fixing member is a main bearing seat.
[0018] Optionally, the second key includes a key body and a trapezoidal boss located between the key body and the slip ring body, and the avoidance groove is provided on the side surface of the key body. The trapezoidal boss can increase the extension height of the second key on the one hand, so that the second key can be inserted into the stationary scroll keyway of the stationary scroll member or the main bearing seat keyway of the main bearing seat located on the same side as the moving scroll member relative to the cross slip ring assembly, especially facilitating the insertion of the second key into the stationary scroll keyway of the stationary scroll member; on the other hand, the trapezoidal boss can improve the strength of the second key.
[0019] Optionally, the avoidance groove is adjacent to the trapezoidal boss. In this way, on the one hand, it allows the avoidance groove to be located at a position closer to the free end of the keyway wall suitable for accommodating the keyway wall of the slip ring body, and on the other hand, it makes the working surface of the key body for sliding cooperation with the keyway wall have a better continuous surface and / or a larger contact area (that is, minimizing the influence of the avoidance groove on the working surface).
[0020] Optionally, the cross slip ring assembly is a component made of a material softer than the material of the fixing member. Thus, it provides an effective and economical solution for reducing the key wear of the lightweight mass-produced cross slip ring assembly.
[0021] In another aspect of the present invention, a scroll compressor is provided, and the scroll compressor includes any one of the above cross slip ring assemblies. The scroll compressor according to the present invention includes any one of the above cross slip ring assemblies, and therefore, also has the above beneficial effects. For the sake of brevity, it will not be described in detail here.
[0022] Optionally, the scroll compressor is a scroll compressor using jet enthalpy increase. The cross slip ring assembly provided with the avoidance groove is particularly advantageous for a scroll compressor using jet enthalpy increase, and can avoid the improper wear of the cross slip ring assembly while providing the refrigeration / heating performance of the system through jet enthalpy increase.
[0023] In summary, the cross slip ring assembly provided by the present utility model can avoid angular contact between the second keyway of the fixed member and the side surface of the second key, thereby reducing wear.
[0024] Based on the description provided herein, other application areas will become readily understandable. The descriptions and specific examples in this summary are for illustrative purposes only and are not intended to limit the scope of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The drawings provided herein are for illustrative purposes only of selected embodiments and not all possible embodiments, and are not intended to limit the scope of the present disclosure.
[0026] Figure 1 A three-dimensional schematic diagram of a cross slip ring assembly according to the related art is shown;
[0027] Figure 2 A schematic diagram of a cross slip ring assembly according to the related art assembled with a moving scroll member and a fixed scroll member of a scroll assembly is shown, wherein a partial section is made to show the cooperation between the cross slip ring assembly and the fixed scroll member;
[0028] Figure 3 Shows Figure 2 A partial enlarged schematic diagram at position A in
[0029] Figure 4 A longitudinal sectional view of a scroll compressor according to a preferred embodiment of the present utility model is shown;
[0030] Figure 5 A three-dimensional schematic diagram of a cross slip ring assembly of a scroll compressor according to a preferred embodiment of the present utility model is shown;
[0031] Figure 6 Shows Figure 5 A partial enlarged view at position C in
[0032] Figure 7 A three-dimensional schematic diagram of a cross slip ring assembly, a moving scroll member, and a fixed scroll member of a scroll compressor according to a preferred embodiment of the present utility model in a disassembled state is shown;
[0033] Figure 8 A three-dimensional schematic diagram of a cross slip ring assembly, a moving scroll member, and a fixed scroll member of a scroll compressor according to a preferred embodiment of the present utility model in an assembled state is shown;
[0034] Figure 9 A side view schematic diagram of a cross slip ring assembly, a moving scroll member, and a fixed scroll member of a scroll compressor according to a preferred embodiment of the present utility model in an assembled state is shown;
[0035] Figure 10A side view schematic diagram of an assembled cross slip ring assembly, a moving scroll member, and a stationary scroll member of a scroll compressor according to a preferred embodiment of the present utility model is shown, wherein a partial section is made to show the cooperation between the cross slip ring assembly and the stationary scroll member; and
[0036] Figure 11 shows Figure 10 A partial enlarged view at position D in Specific embodiments
[0037] Example embodiments will now be described more fully with reference to the accompanying drawings.
[0038] Example embodiments are provided so that this disclosure will be thorough and will fully convey the scope to those skilled in the art. Numerous specific details such as examples of specific components, devices, and methods are set forth to provide a comprehensive understanding of the embodiments of this disclosure. It will be apparent to those skilled in the art that specific details need not be employed, and that the example embodiments may be embodied in many different forms and should not be construed as limiting the scope of this disclosure. In some example embodiments, well-known processes, well-known device structures, and well-known technologies have not been described in detail.
[0039] The terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. As used herein, unless the context clearly dictates otherwise, the singular forms "a" and "the" are also intended to include the plural forms. The terms "comprises," "comprising," "includes," and "having" are inclusive and thus specify the presence of the stated features, components, steps, operations, elements, and / or parts, but do not preclude the presence or addition of one or more other features, components, steps, operations, elements, parts, and / or groups thereof. The method steps, processes, and operations described herein should not be construed as necessarily requiring to be performed in the particular order discussed or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
[0040] When an element or layer is described as "on another element or layer", "joined to another element or layer", "connected to another element or layer", or "coupled to another element or layer", the element or layer can be directly on the other element or layer, directly joined, connected, or coupled to the other element or layer, or there can be intervening elements or layers. In contrast, when an element is described as "directly on another element or layer", "directly joined to another element or layer", "directly connected to another element or layer", or "directly coupled to another element or layer", there can be no intervening elements or layers. Other words used to describe the relationship between elements should be understood in the same way (e.g., "between" and "directly between", "adjacent to" and "directly adjacent to", etc.). As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.
[0041] Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, and / or section from another region, layer, or section. Unless the context clearly indicates otherwise, terms such as "first", "second", and other numerical terms do not imply an order or sequence when used herein. Thus, a first element, first component, first region, first layer, or first section discussed below may be termed a second element, second component, second region, second layer, or second section without departing from the teachings of the exemplary embodiments.
[0042] For ease of description, spatially relative terms such as "inner", "outer", "beneath", "below", "lower", "above", "upper", etc. may be used herein to describe the relationship of one element or feature to another as shown in the figures. In addition to the orientation depicted in the figures, spatially relative terms are intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is flipped, an element described as "beneath" or "below" other elements or features will then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation above and below. The device may be otherwise oriented (rotated 90° or at other orientations) and the spatially relative descriptors used herein may be interpreted accordingly.
[0043] The present utility model provides a cross slip ring assembly for a scroll compressor and a scroll compressor including the cross slip ring assembly. Figure 4 A longitudinal sectional view of a scroll compressor 10 according to a preferred embodiment of the present utility model is shown. First, the following will be combined with Figure 4Describe the main components of a scroll compressor 10 according to a preferred embodiment of the present utility model.
[0044] As Figure 4 shown, the scroll compressor 10 is, for example, a vertical scroll compressor. In other embodiments not shown in the present utility model, the scroll compressor 10 may also be a horizontal scroll compressor. The scroll compressor 10 may include a cross slip ring assembly 100, a scroll assembly (compression mechanism) 200, a sealed housing assembly 300, a bearing housing assembly 400, and a motor assembly 500.
[0045] The housing assembly 300 is used to accommodate other components of the scroll compressor 10. The housing assembly 300 may include a housing body 310, an end cap 320, and a base 330. The housing body 310 may be generally cylindrical. The end cap 320 is provided at the upper end of the housing body 310. The base 330 is provided at the lower end of the housing body 310.
[0046] The bearing housing assembly 400 may be attached to the housing body 310 of the housing assembly 300 and may include a main bearing housing 410 and a main bearing 420. The main bearing 420 is received in the main bearing housing 410.
[0047] The motor assembly 500 may include a stator 510, a rotor 520, and a drive shaft 530. The stator 510 may be press-fitted to the housing body 310 of the housing assembly 300. The drive shaft 530 may be rotatably driven by the rotor 520 and may be rotatably supported within the main bearing 420. The rotor 520 may be press-fitted onto the drive shaft 530. The drive shaft 530 may include an eccentric crank pin 531.
[0048] The scroll assembly 200 may generally include an orbiting scroll 210 and a fixed scroll 220. The orbiting scroll 210 may include an orbiting scroll end plate 211, an orbiting scroll spiral wrap 212 provided on the upper surface of the orbiting scroll end plate 211, and a cylindrical hub portion 213 protruding downward from the lower surface of the orbiting scroll end plate 211. The hub portion 213 may include an inner hole, and the crank pin 531 is drivingly arranged in the inner hole to drive the orbiting scroll 210. The fixed scroll 220 includes a fixed scroll end plate 221, a fixed scroll spiral wrap 222 provided on the lower surface of the fixed scroll end plate 221, and an exhaust port 223 provided at a substantially central position of the fixed scroll end plate 221.
[0049] The cross slip ring assembly 100 is used to cooperate with the moving scroll member 210 and the fixed scroll member 220 (an example of a "fixed member") to prevent the moving scroll member 210 from rotating on its own. It should be noted that the "fixed member" in this article refers to the member that cooperates with the moving scroll member 210 together with the cross slip ring assembly 100. When the fixed member is the fixed scroll member 220, the fixed scroll member 220 may not be absolutely fixed relative to the housing assembly 300 of the scroll compressor 10, but can axially float to provide axial flexibility for the scroll assembly 200. Of course, the fixed scroll member 220 may also not be able to axially float relative to the housing assembly 300.
[0050] Figure 5 Fig. 4 shows a three-dimensional schematic diagram of the cross slip ring assembly 100 of the scroll compressor 10 according to a preferred embodiment of the present invention. Figure 6 It shows Figure 5 The partial enlarged view at C in Figure 7 Fig. 10 shows a three-dimensional schematic diagram of the cross slip ring assembly 100, the moving scroll member 210, and the fixed scroll member 220 of the scroll compressor 10 according to a preferred embodiment of the present invention in a disassembled state.
[0051] Figure 8 Fig. 14 shows a three-dimensional schematic diagram of the cross slip ring assembly 100, the moving scroll member 210, and the fixed scroll member 220 of the scroll compressor 10 according to a preferred embodiment of the present invention in an assembled state.
[0052] Figure 9 Fig. 18 shows a side view schematic diagram of the cross slip ring assembly 100, the moving scroll member 210, and the fixed scroll member 220 of the scroll compressor 10 according to a preferred embodiment of the present invention in an assembled state.
[0053] Figure 10 Fig. 22 shows a side view schematic diagram of the cross slip ring assembly 100, the moving scroll member 210, and the fixed scroll member 220 of the scroll compressor 10 according to a preferred embodiment of the present invention in an assembled state, in which a partial section is made to show the cooperation between the cross slip ring assembly 100 and the fixed scroll member 220. Figure 11 It shows Figure 10 The partial enlarged view at D in Figures 5 to 11 The following will describe the cross slip ring assembly 100 of the scroll compressor 10 according to a preferred embodiment of the present invention in detail.
[0054] As Figures 5 to 11As shown, the cross slip ring assembly 100 includes a slip ring body 110, a first key 120, and a second key 130. The slip ring body 110 is formed into a non-standard circular ring shape. Preferably, the annular body 110 is axisymmetric. The slip ring body 110 includes a first end surface 111 and a second end surface 112 opposite to the first end surface 111. When the cross slip ring assembly 100 is assembled in the scroll compressor 10, the cross slip ring assembly 100 is located between the scroll assembly 200 and the bearing seat assembly 400. The first end surface 111 of the slip ring body 110 faces the moving scroll member 210 and the fixed scroll member 220, and the second end surface 112 faces the main bearing seat 410. The cross slip ring assembly 100 includes a pair of opposed first keys 120 and a pair of opposed second keys 130. The line connecting the two opposed first keys 120 and the line connecting the two opposed second keys 130 may be substantially perpendicular. Both the first key 120 and the second key 130 extend from the slip ring body 110 in a direction perpendicular to the plane where the slip ring body 110 is located. Specifically, both the first key 120 and the second key 130 extend from the first end surface 111 of the slip ring body 110, that is, the first key 120 and the second key 130 extend from the slip ring body 110 in the same direction. The first key 120 is used to be inserted into the moving scroll keyway 214 (i.e., the "first keyway") of the moving scroll member 210 to cooperate with the moving scroll keyway 214. The second key 130 is used to be inserted into the fixed scroll keyway 224 (as an example of the "second keyway") of the fixed scroll member 220 to cooperate with the fixed scroll keyway 224. Since the moving scroll member 210 and the fixed scroll member 220 are located on the same side with respect to the cross slip ring assembly 100 and the moving scroll member 210 is located between the fixed scroll member 220 and the cross slip ring assembly 100, and the fixed scroll member 220 is relatively far from the cross slip ring assembly 100, the extending height of the second key 130 is greater than the extending height of the first key 120. Specifically, the second key 130 includes a boss 131 and a key body 132, and the boss 131 is located between the key body 132 and the slip ring body 110. The boss 131 may be a generally trapezoidal boss. When the second key 130 is inserted into the fixed scroll keyway 224 of the fixed scroll member 220, only the key body 132 of the second key 130 is inserted into the fixed scroll keyway 224. On the one hand, the trapezoidal boss 131 can increase the extending height of the second key 120 so that the second key 120 can be inserted into the fixed scroll keyway 224 of the fixed scroll member 220. On the other hand, the trapezoidal boss 131 can improve the strength of the second key 130.
[0055] In order to avoid angular contact between the keyway wall 224A of the fixed scroll keyway 224 of the fixed scroll member 220, which is a fixed member, and the second key 130 of the cross slip ring assembly 100 when the second key 130 is skewed, according to the concept of the present invention, an avoidance groove 133 is provided on the second key 130.
[0056] Specifically, as Figure 5 , Figure 6, Figure 10 and Figure 11 As shown in Figure 10 and Figure 11 , the second key 130 includes two side surfaces 134 that are opposite to each other in the circumferential direction of the slip ring body 110. When the slip ring body 110 is assembled in the scroll compressor 10 and the second key 130 is inserted into the corresponding scroll keyway 224 in the stationary scroll member 220, the two side surfaces 134 face the keyway walls 224A of the corresponding scroll keyway 224 respectively. The side surfaces 134 constitute the sliding surfaces, that is, the working surfaces, of the second key 130, and one of the side surfaces 134 is on the stressed side, which is the stressed side surface. For example, when the moving scroll member 220 located above the cross slip ring assembly 100 rotates clockwise, as Figure 5 shown in Figure 5 the side surface 134 on the left side of the second key 130 at the lower right corner in Figure 5 is the stressed side surface, and the side surface 134 on the right side of the second key 130 at the upper left corner in Figure 5 Figure 5 is the stressed side surface. An avoidance groove 133 is formed on the side surface 134 of the second key 130 and recesses toward the other side surface. Specifically, the avoidance groove 133 is formed on the side surface 134 in the key body 132 of the second key 130. When the second key 130 of the cross slip ring assembly 100 is deflected, due to the provision of the avoidance groove 133, angular contact between the side surface 134 of the second key 130 and the keyway wall 224A of the corresponding scroll keyway 224 in the stationary scroll member 220 can be avoided, thereby reducing the wear of the second key 130 of the cross slip ring assembly 100.
[0057] The avoidance groove 133 can be formed on both side surfaces 134. That is, each side surface 134 can be provided with an avoidance groove 133 that recesses toward the other side surface. Preferably, the avoidance groove 133 can be formed only in the side surface 134 on the stressed side of the second key 130. For example, in the embodiment shown in Figure 5 Figure 5 , only the side surface 134 on the left side of the second key 130 at the lower right corner in Figure 5 Figure 5 and the side surface 134 on the right side of the second key 130 at the upper left corner in Figure 5A relief groove 133 is provided on a side surface 134 to the right of a second key 130 at the upper left corner. Generally, when the second key 130 of the cross slip ring assembly 100 slides along a fixed scroll key groove 224 of a fixed scroll member 220, depending on the rotation direction of a moving scroll member 210 cooperating with the cross slip ring assembly 100, only one of the two side surfaces 134 of the second key 130 of the cross slip ring assembly 100 in the circumferential direction of the slip ring body 110 is stressed. Therefore, when the second key 130 of the cross slip ring assembly 100 is deflected, the side surface 134 of only the stressed side of the second key 130 is prone to wear. By providing the relief groove 133 only in the side surface 134 located on the stressed side of the second key 130, it is possible to prevent the second key 130 of the cross slip ring assembly 100 from wearing due to angular contact with a key groove wall 224A of a corresponding fixed scroll key groove 224 in the fixed scroll member 220, while ensuring the required strength of the second key 130.
[0058] As Figure 11 shown, the relief groove 133 may include a bottom wall 133A. The bottom wall 133A of the relief groove 133 is substantially parallel to the side surface 134 of the second key 130 and is recessed relative to the side surface 134 toward the other side surface. The vertical distance between the bottom wall 133A and the side surface 134 is the recess depth d of the relief groove 133. Preferably, the recess depth d is 0.5 mm to 2 mm. The inventor found that when the recess depth d is within the above range, it is possible to effectively prevent the side surface 134 of the second key 130 of the cross slip ring assembly 100 from making angular contact with the key groove wall 224A of the corresponding fixed scroll key groove 224 in the fixed scroll member 220, thereby avoiding wear of the second key 130, and at the same time, it will not have an adverse effect on the strength of the second key 130.
[0059] As Figure 11 shown, the relief groove 133 further includes opposite first side walls 133B and second side walls 133C extending from the bottom wall 133A. The second side walls 133C are farther from the slip ring body 110 than the first side walls 133B. The second side walls 133C are connected between the bottom wall 133A and the side surface 134 of the second key 130. The first side walls 133B are connected between the bottom wall 133A and the boss 131. When the second key 130 of the cross slip ring assembly 100 is inserted into the fixed scroll key groove 224 of the fixed scroll member 220 so that the cross slip ring assembly 100 cooperates with the fixed scroll member 220, the free end of the key groove wall 224A of the fixed scroll key groove 224 is in the extending direction of the second key 130 ( Figure 11is located between the first side wall 133B and the second side wall 133C in the vertical direction (in the figure). When the second key 130 of the cross slip ring assembly 100 is deflected, the free end of the keyway wall 224A of the corresponding fixed scroll keyway 224 in the fixed scroll member 220 that cooperates with the second key 130 of the cross slip ring assembly 100 can be located in the relief groove 133, as shown at E in Figure 11 the figure, without angular contact with the side surface 134 of the second key 130, thus reducing the wear of the second key 130 of the cross slip ring assembly 100.
[0060] Preferably, the connecting portion 133D between the second side wall 133C and the side surface 134 is rounded. When the second key 130 of the cross slip ring assembly 100 is deflected, the connecting portion 133D between the second side wall 133C and the side surface 134 may contact the keyway wall 224A of the corresponding fixed scroll keyway 224 of the fixed scroll member 220. The connecting portion 133D being rounded can reduce the wear between the connecting portion 133D and the keyway wall 224A of the fixed scroll keyway 224 of the fixed scroll member 220.
[0061] In the illustrated embodiment, the relief groove 133 is adjacent to the trapezoidal boss 131, that is, the relief groove 133 is provided at the bottom portion of the side surface of the key body 132 that is connected to the trapezoidal boss 131. In this way, on the one hand, it allows the relief groove 133 to be located at a position relatively close to the slip ring body 110 suitable for accommodating the free end of the keyway wall 224A, and on the other hand, it enables the working surface of the key body 132 for sliding cooperation with the keyway wall 224A to have a better continuous surface and / or a larger contact area (that is, minimizing the influence of the relief groove 133 on this working surface).
[0062] In some embodiments, the cross slip ring assembly can be a component made of a material softer than that of the fixed member. For example, the cross slip ring assembly can be a component made of aluminum, while the fixed member can be a component made of cast iron. Thus, according to the present utility model, an effective and economical solution for reducing the key wear of the cross slip ring assembly is provided for a lightweight mass-produced cross slip ring assembly.
[0063] According to the present utility model, the scroll compressor can be a scroll compressor using jet enthalpy increase. The inventor found that in a scroll compressor using jet enthalpy increase, there is a situation where the scroll assembly instantaneously flips at the moment of exhaust, which can cause improper wear of the keyway of the cross slip ring assembly. Thus, the cross slip ring assembly provided with a relief groove according to the present utility model is particularly advantageous for a scroll compressor using jet enthalpy increase, and can avoid improper wear of the cross slip ring assembly while providing the refrigeration / heating performance of the system through jet enthalpy increase.
[0064] According to the scroll compressor of the present utility model, a structure (such as a channel for conveying lubricating oil) dedicated to conveying (liquid) lubricating oil to the mating portion of the cross slip ring assembly and the fixed member may not be provided.
[0065] It should be noted that although in the above-described embodiment, the cross slip ring assembly 100 is shown and described as being mated with the moving scroll member 210 and the fixed scroll member 220, in other embodiments not shown in the present utility model, the cross slip ring assembly 100 may also be used to mate with the moving scroll member 210 and the main bearing seat 410 (as another example of the "fixed member"). When the cross slip ring assembly 100 is used to mate with the moving scroll member 210 and the main bearing seat 410, the first key 120 and the second key 130 of the cross slip ring assembly 100 may extend in opposite directions from the slip ring body 110. Specifically, the first key 120 of the cross slip ring assembly 100 may extend from the first end surface 111 for insertion into the moving scroll keyway 214 of the moving scroll member 210; the second key 130 of the cross slip ring assembly 100 may extend from the second end surface 112 for insertion into the main bearing seat keyway (as another example of the "second keyway") of the main bearing seat 410. In addition, when the cross slip ring assembly 100 is used to mate with the moving scroll member 210 and the main bearing seat 410, the first key 120 and the second key 130 may have the same extension height.
[0066] In summary, the cross slip ring assembly 100 provided by the present utility model is provided with an avoidance groove 133 on the side surface serving as the sliding surface of the second key 130 that mates with the fixed member. When the second key 130 of the cross slip ring assembly 100 is deflected, the keyway wall of the corresponding keyway in the fixed member that mates with the second key 130 of the cross slip ring assembly 100 may be located in the avoidance groove 133 without angular contact with the side surface 134 of the second key 130, thereby reducing the wear of the second key 130 of the cross slip ring assembly 100.
[0067] The foregoing description of the embodiments has been provided for purposes of illustration and description. These descriptions are not intended to be exhaustive or to limit the disclosure. The various elements or features of a particular embodiment are generally not limited to that particular embodiment, but rather, where applicable, are interchangeable and can be used in selected embodiments even if not specifically shown or described. The various elements or features of a particular embodiment can also be changed in many ways. Such changes should not be regarded as departing from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.
Claims
1. A cross slip ring assembly for a scroll compressor, the scroll compressor including a moving scroll member and a fixed member, the moving scroll member being provided with a first keyway, the fixed member being provided with a second keyway, the cross slip ring assembly comprising: A slip ring body; A first key extending from the slip ring body in a direction perpendicular to the plane in which the slip ring body is located and adapted to cooperate with the first keyway; And A second key extending from the slip ring body in a direction perpendicular to the plane in which the slip ring body is located and adapted to cooperate with the second keyway, Characterized in that the second key includes two opposite side surfaces in the circumferential direction of the slip ring body, and at least one of the side surfaces is provided with a relief groove recessed toward the other side surface.
2. The cross slip ring assembly according to claim 1, wherein The relief groove is only provided in the side surface located on the stressed side of the second key.
3. The cross slip ring assembly according to claim 1 or 2, characterized in that, The relief groove includes a bottom wall and opposite first and second side walls extending from the bottom wall, the second side wall being further away from the slip ring body than the first side wall, and the relief groove is configured such that when the cross slip ring assembly cooperates with the fixed member, the free end of the keyway wall of the second keyway is located between the first side wall and the second side wall in the extending direction of the second key.
4. The cross slip ring assembly according to claim 3, wherein, The connection portion of the second side wall and the side surface is rounded.
5. The cross slip ring assembly according to claim 1 or 2, characterized in that, The recessing depth of the relief groove is 0.5 mm to 2 mm.
6. The cross slip ring assembly according to claim 1 or 2, characterized in that: The fixed member is a stationary scroll member; or The fixed member is a main bearing seat.
7. The cross slip ring assembly according to claim 6, wherein The second key includes a key body and a trapezoidal boss located between the key body and the slip ring body, and the relief groove is provided on the side surface of the key body.
8. The cross slip ring assembly according to claim 7, wherein, The relief groove is adjacent to the trapezoidal boss.
9. The cross slip ring assembly according to claim 1 or 2, characterized in that, The cross slip ring assembly is a component made of a material softer than the material of the fixed member.
10. A scroll compressor, characterized in that, The scroll compressor includes the cross slip ring assembly according to any one of claims 1 to 9.
11. The scroll compressor according to claim 10, wherein The scroll compressor is a scroll compressor with jet enthalpy increase.