A cross slip ring and scroll compressor

Abstract

The application provides a cross slip ring and scroll compressor, the cross slip ring comprises a ring body, the ring body has an outer peripheral surface and an inner hole, at least one end of the outer peripheral surface in the center line direction of the inner hole has a concave arc chamfer surface. The ring body also has a flow-through hole penetrating from the outer peripheral surface to the inner hole wall, the flow-through hole extends along a first direction, the first direction is the movement direction of the cross slip ring in the scroll compressor. Wherein, since at least one end of the outer peripheral surface in the center line direction of the inner hole has a concave arc chamfer surface, a streamline design can be formed, when the cross slip ring moves in the scroll compressor, the oil can move along the arc chamfer surface, the running flow resistance of the cross slip ring is reduced, the power consumption of the compressor during operation is reduced, and the operation performance of the compressor is improved. In addition, the arc chamfer surface structure of the application cooperates with the flow-through hole structure, which can significantly reduce the power consumption of the compressor, and the reduction amplitude is between 0.33% and 0.93%.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of scroll compressors, and particularly relates to a cross slide ring and a scroll compressor. BACKGROUND

[0002] At present, scroll compressors are developing towards the trend of high efficiency, and in this process, due to the design features of their own structure, there is a problem of large power consumption in the operation process. The flow resistance of the cross slide ring in the upper support oil pool is one of the main reasons for the increase of power consumption, which has become a major bottleneck restricting the improvement of energy efficiency. SUMMARY

[0003] Therefore, the present application provides a cross slide ring and a scroll compressor, which can solve the technical problem of large flow resistance of the cross slide ring in the upper support oil pool in the prior art, resulting in large power consumption of the compressor.

[0004] In order to solve the above problems, the present application provides a cross slide ring, which comprises a ring body, the ring body has an outer peripheral surface and an inner hole, and at least one end of the outer peripheral surface in the center line direction of the inner hole has an inwardly recessed arc-shaped chamfer surface.

[0005] In some embodiments, when both ends of the outer peripheral surface in the center line direction of the inner hole have inwardly recessed arc-shaped chamfer surfaces, the arc-shaped chamfer surfaces at both ends of the outer peripheral surface in the center line direction of the inner hole are symmetrically arranged.

[0006] In some embodiments, the ring body further has a flow-through hole penetrating from the outer peripheral surface to the inner hole wall, the flow-through hole extends in a first direction, and the first direction is the movement direction of the cross slide ring in the scroll compressor.

[0007] In some embodiments, one end of the ring body in the center line direction of the inner hole is a first end; the first end is provided with the flow-through hole.

[0008] In some embodiments, the outer peripheral surface has the arc-shaped chamfer surface at the first end; the flow-through hole at the first end is defined as a first flow-through hole, and the arc-shaped chamfer surface at the first end of the outer peripheral surface is a first arc-shaped chamfer surface; wherein one end of the first flow-through hole away from the inner hole penetrates through the first arc-shaped chamfer surface.

[0009] In some embodiments, one end of the first arc-shaped chamfer surface is connected with the end surface of the first end; the first flow-through hole has a first side close to the end surface of the first end and a second side away from the end surface of the first end; wherein, in the center line direction of the inner hole, the distance between the other end of the first arc-shaped chamfer surface and the end surface of the first end is H, and the distance between the second side of the first flow-through hole and the end surface of the first end is H1, H1 = 1 / 3H ~ 1 / 2H.

[0010] In some embodiments, the other end of the ring body in the center line direction of the inner hole is a second end; the second end is also provided with the flow-through hole; wherein, the flow-through hole of the first end and the flow-through hole of the second end are symmetrically arranged.

[0011] In some embodiments, the number of flow-through holes is two or more, and includes a first a flow-through hole and a second a flow-through hole, and the center lines of the first a flow-through hole and the second a flow-through hole coincide.

[0012] In some embodiments, the outer circle radius of the ring body is R, and the width of the flow-through hole in the first direction is L.

[0013] The number of flow-through holes is N, N is a positive integer greater than or equal to 2; wherein, N*L = a*R, a = 1 / 4 ~ 1 / 3.

[0014] The application also provides a scroll compressor comprising the cross slide ring of any one of the above.

[0015] The cross slide ring and scroll compressor provided by the application have the following beneficial effects:

[0016] 1. Since at least one end of the outer circumferential surface in the center line direction of the inner hole has an arc-shaped chamfer surface concave inward, a streamlined design can be formed, and when the cross slide ring moves in the scroll compressor, the oil can move along the arc-shaped chamfer surface, thereby reducing the flow resistance of the cross slide ring, reducing the power consumption of the compressor, and improving the operating performance of the compressor.

[0017] 2. By providing a flow-through hole on the ring body, which penetrates from the outer circumferential surface to the inner hole wall, and the extension direction of the flow-through hole is consistent with the movement direction of the cross slide ring in the scroll compressor, so that when the cross slide ring moves in the scroll compressor, the oil in the oil pool of the upper bracket can flow along the flow-through hole; wherein, the provision of the flow-through hole can directly reduce the oil sweeping area of the cross slide ring, thereby reducing the flow resistance of the cross slide ring, reducing the power consumption of the compressor, and improving the operating performance of the compressor.

[0018] 3. The arc-shaped chamfer surface structure and the flow-through hole structure of the application can significantly reduce the power consumption of the compressor, and the reduction range is between 0.33% and 0.93%. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required to be used in the following embodiment or prior art description will be briefly introduced. The drawings in the following description are only exemplary, and other drawings can be obtained by the provided drawings without creative labor for those skilled in the art.

[0020] Figure 1 is a structural schematic diagram of a conventional cross slip ring in the prior art;

[0021] Figure 2 is a structural schematic diagram of a cross slip ring provided by an embodiment of the present application;

[0022] Figure 3 is Figure 2 is a sectional view along A-A direction in

[0023] Figure 4 is a structural schematic diagram of another cross slip ring provided by an embodiment of the present application;

[0024] Figure 5 is a structural schematic diagram of a scroll compressor provided by an embodiment of the present application;

[0025] Figure 6 is a structural schematic diagram of an upper support of the present application;

[0026] Figure 7 shows a comparison chart of compressor power consumption under different working conditions.

[0027] The reference signs are:

[0028] 1, orbiting scroll; 2, shell; 3, upper support; 4, fixed scroll; 5, main bearing; 6, motor; 7, crankshaft; 8, auxiliary bearing; 9, lower cover; 10, cross slip ring; 10a, inner hole; 10b, outer peripheral surface; 10c, first side; 10d, second side; 101, first end; 102, second end; 103, arc chamfer surface; 301, upper support oil pool; 1001, flow-through hole; 1001a, first flow-through hole; 1031, first arc chamfer surface; a, first direction; 1001b, first a flow-through hole; 1001c, second a flow-through hole. DETAILED DESCRIPTION

[0029] Clearly, the described embodiments are only a part of all embodiments of the present application, rather than all embodiments. The following description of at least one example embodiment is merely illustrative in nature and does not serve as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0031] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawings is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the example term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0032] In addition, it should be noted that the use of "first", "second" and the like to define parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore it cannot be understood as a limitation on the scope of protection of the present application.

[0033] For reference Figures 2-4 As shown, according to the embodiments of the present application, a cross slip ring 10 is provided, which includes a ring body having an outer peripheral surface 10b and an inner hole 10a. The outer peripheral surface 10b has a concave arc chamfer surface 103 at least at one end in the center line direction of the inner hole 10a.

[0034] In the above example, since the outer circumferential surface 10b has the concave arc chamfer surface 103 at least at one end in the center line direction of the inner hole 10a, a streamlined design can be formed, and when the cross slip ring 10 moves in the scroll compressor, the oil can move along the arc chamfer surface 103, reduce the running flow resistance of the cross slip ring 10, reduce the power consumption of the compressor during operation, and improve the operation performance of the compressor.

[0035] In some embodiments, as shown in Figure 3 When the outer circumferential surface 10b has the concave arc chamfer surface 103 at both ends in the center line direction of the inner hole 10a, the arc chamfer surfaces 103 at both ends of the outer circumferential surface 10b in the center line direction of the inner hole 10a are symmetrically arranged, which makes the shape of the cross slip ring more smooth, and is beneficial to further reduce the running flow resistance of the cross slip ring 10, reduce the power consumption of the compressor during operation, and improve the operation performance of the compressor.

[0036] In some embodiments, as shown in Figures 2-4 The aforementioned ring body also has a flow-through hole 1001 penetrating from the outer circumferential surface 10b to the hole wall of the inner hole 10a. The flow-through hole 1001 extends along the first direction a, which is the movement direction of the cross slip ring 10 in the scroll compressor.

[0037] In the above example, by arranging the flow-through hole 1001 penetrating from the outer circumferential surface 10b to the hole wall of the inner hole 10a on the ring body, and the extension direction of the flow-through hole 1001 is consistent with the movement direction of the cross slip ring 10 in the scroll compressor, so that when the cross slip ring 10 moves in the scroll compressor, the oil in the oil pool of the upper support 3 can flow along the flow-through hole 1001; wherein the arrangement of the through-flow hole can directly reduce the oil sweeping area of the cross slip ring 10, thereby reducing the flow resistance of the cross slip ring 10, reducing the power consumption of the compressor, and improving the operation performance of the compressor.

[0038] In some embodiments, as shown in Figure 3 The aforementioned ring body has a first end 101 in the center line direction of the inner hole 10a, and the first end 101 is provided with the aforementioned flow-through hole 1001. In one example, as shown in Figures 2-3 The flow-through hole 1001 can be arranged inside the first end 101, and the flow-through hole 1001 does not penetrate the end surface of the first end 101. In another example, as shown in Figure 4 The flow-through hole 1001 can be arranged on the end surface of the first end 101, and at this time the flow-through hole 1001 is a slot hole, and the flow-through hole 1001 penetrates the end surface of the first end 101.

[0039] In some embodiments, as shown in Figure 3As shown, the aforementioned outer circumferential surface 10b has the aforementioned arc-shaped chamfer surface 103 at the first end 101. The flow-through hole 1001 defining the first end 101 is a first flow-through hole 1001a, and the arc-shaped chamfer surface 103 of the first end 101 is a first arc-shaped chamfer surface 1031. The end of the first flow-through hole 1001a away from the inner hole 10a penetrates the first arc-shaped chamfer surface 1031.

[0040] In the above example, the first flow-through hole 1001a and the first arc-shaped chamfer surface 1031 cooperate, when the cross slip ring 10 moves in the scroll compressor, the oil can move along the arc-shaped chamfer surface 103 and pass through the first flow-through hole 1001a; wherein the arc-shaped chamfer surface 103 can guide the movement of the oil to the first flow-through hole 1001a, so as to further reduce the flow resistance of the cross slip ring 10, reduce the power consumption of the compressor, and improve the operation performance of the compressor.

[0041] In some embodiments, as shown in Figure 3 As shown, one end of the aforementioned first arc-shaped chamfer surface 1031 is connected with the end surface of the first end 101. The first flow-through hole 1001a has a first side 10c close to the end surface of the first end 101 and a second side 10d away from the end surface of the first end 101. Wherein, in the centerline direction of the inner hole 10a, the distance between the other end of the first arc-shaped chamfer surface 1031 and the end surface of the first end 101 is H, and the distance between the second side 10d of the first flow-through hole 1001a and the end surface of the first end 101 is H1, H1 = 1 / 3H ~ 1 / 2H.

[0042] In the above example, the second side 10d of the first flow-through hole 1001a is the bottom side, wherein by designing the distance between the bottom side of the first flow-through hole 1001a and the end surface of the first end 101 as 1 / 3H ~ 1 / 2H, it is beneficial for the oil to flow into the first flow-through hole 1001a, so as to further reduce the flow resistance of the cross slip ring 10, reduce the power consumption of the compressor, and improve the operation performance of the compressor.

[0043] In some embodiments, as shown in Figure 3 As shown, the other end of the aforementioned ring body in the centerline direction of the inner hole 10a is a second end 102; the second end 102 is also provided with the aforementioned flow-through hole 1001. Wherein, the flow-through hole 1001 of the first end 101 and the flow-through hole 1001 of the second end 102 are symmetrically arranged, so that the stress on the cross slip ring 10 is more uniform, which is beneficial to further reduce the flow resistance of the cross slip ring 10, reduce the power consumption of the compressor, and improve the operation performance of the compressor.

[0044] In some embodiments, as shown in Figure 2As shown, the number of the flow-through holes 1001 is two or more, and includes a first flow-through hole 1001b and a second flow-through hole 1001c. The center lines of the first flow-through hole 1001b and the second flow-through hole 1001c coincide. In this way, when the cross slip ring 10 moves in the first direction a, the fluid in the center lines of the first flow-through hole 1001b and the second flow-through hole 1001c can move in the same direction without being hindered, thus facilitating further reduction of the flow resistance of the cross slip ring 10, reducing the power consumption of the compressor, and improving the operating performance of the compressor.

[0045] In some embodiments, as shown in Figure 2 As shown, the outer radius of the ring body is R, and the width of the flow-through hole 1001 in the first direction a is L. The number of flow-through holes 1001 is N, and N is a positive integer greater than or equal to 2. Wherein, N*L=a*R, a=1 / 4~1 / 3.

[0046] In the above example, by limiting the total width of the flow-through hole 1001, the structural strength of the cross slip ring 10 can be ensured while reducing the flow resistance during operation of the cross slip ring 10.

[0047] Figure 7 A comparison chart of the power consumption of the compressor under different working conditions is shown. In the present application, the outer radius of the ring body is R, and the width of the flow-through hole 1001 in the first direction a is L. The number of flow-through holes 1001 is N, and N is a positive integer greater than or equal to 2. Wherein, N*L=a*R, a=1 / 4~1 / 3; and in the center line direction of the inner hole 10a, the distance between the other end of the first arc chamfer surface 1031 and the end surface of the first end 101 is H, and the distance between the second side of the first flow-through hole 1001a and the end surface of the first end 101 is 1 / 3H~1 / 2H. The comparison scheme is that the cross slip ring 10 has no flow-through hole 1001 design, and the end of the outer circumferential surface 10b of the cross slip ring 10 in the center line direction of the inner hole 10a has no arc chamfer surface 103 design. From the chart Figure 7 It can be seen that, compared with the comparison scheme, the present application can effectively reduce the power consumption of the compressor under working conditions 1~7. Among them, working conditions 1~7 are seven common working conditions of the compressor. From the chart Figure 7As can be seen from the difference between the lines, in the working condition 1, the compressor power consumption of the scheme of the application is reduced by 0.57% compared with the comparative scheme; in the working condition 2, the compressor power consumption of the scheme of the application is reduced by 0.55% compared with the comparative scheme; in the working condition 3, the compressor power consumption of the scheme of the application is reduced by 0.93% compared with the comparative scheme; in the working condition 4, the compressor power consumption of the scheme of the application is reduced by 0.81% compared with the comparative scheme; in the working condition 5, the compressor power consumption of the scheme of the application is reduced by 0.33% compared with the comparative scheme; in the working condition 6, the compressor power consumption of the scheme of the application is reduced by 0.73% compared with the comparative scheme; in the working condition 7, the compressor power consumption of the scheme of the application is reduced by 0.90% compared with the comparative scheme. As can be known from the above, the compressor power consumption of the scheme of the application is significantly reduced, and the reduction range is between 0.33% and 0.93%.

[0048] The application further provides a scroll compressor comprising the cross slide ring 10 of any one of the above. Since the scroll compressor adopts the cross slide ring 10, the outer peripheral surface 10b has the concave arc chamfer surface 103 at least at one end in the center line direction of the inner hole 10a, so that a streamline design can be formed, and when the cross slide ring 10 moves in the scroll compressor, the oil can move along the arc chamfer surface 103, the running flow resistance of the cross slide ring 10 is reduced, the compressor running power consumption is reduced, and the compressor running performance is improved.

[0049] As shown in Figure 5 The scroll compressor of the application further comprises a moving scroll 1, a shell 2, an upper support 3, a stationary scroll 4, a main bearing 5, a motor 6, a crankshaft 7, a secondary bearing 8, a lower cover 9 and an upper cover. The motor 6 comprises a stator and a rotor sleeved on the crankshaft 7. The motor 6 is fixed on the shell 2 by cold pressing or hot setting, and the upper support 3 is connected with the shell 2 by welding. The stationary scroll 4 and the moving scroll 1 are oppositely installed on the upper support 3 with a phase angle difference of 180 degrees. The moving scroll 1 is driven by the crankshaft 7 to rotate and mesh with the stationary scroll 4 to form a series of crescent-shaped closed cavities which are isolated from each other and have gradually changed volumes.

[0050] When the compressor is running, the motor 6 drives the crankshaft 7 to rotate, the top end of the crankshaft 7 has an eccentric crank section at the contact position with the moving scroll 1, the eccentric crank section drives the moving scroll 1 to rotate eccentrically with a fixed radius, and under the anti-rotation effect of the cross slide ring 10, the actual running path of the moving scroll 1 is a convolution translation. The refrigerant entering from outside the compressor is sucked into the crescent-shaped suction chamber formed by the moving scroll 1 and the stationary scroll 4, and then is discharged from the exhaust port of the stationary scroll 4 into the closed cavity formed by the shell 2, the lower cover 9 and the like, and then is discharged from the exhaust copper pipe on the shell 2 out of the compressor.

[0051] Figure 6 A structural schematic view of the upper support 3 is shown. As Figure 6As shown, during the operation of the compressor, the cross slip ring 10 runs in the oil pool of the upper support 3 on the upper support 3, and the cross slip ring 10 cooperates with the upper support 3 and the dynamic disc, and the cross slip ring 10 does linear reciprocating motion in the oil pool of the upper support 3. Because there is a large amount of lubricating oil in the oil pool, the cross slip ring 10 has a large resistance during the operation. Figure 1 A structural schematic diagram of a prior art cross slip ring 10 is shown. As shown in the figure, Figure 1 As shown, the cross slip ring 10 is not provided with a through-flow structure. Figure 2 A structural schematic diagram of a cross slip ring 10 of the present application is shown. As shown in the figure, Figure 2 As shown, the cross slip ring 10 is provided with a streamlined structure (i.e. the aforesaid concave arc chamfer surface 103) and a plurality of flow-through holes 1001 in the running direction of the cross slip ring 10. Among them, by providing the streamlined structure (i.e. the aforesaid concave arc chamfer surface 103) and the flow-through holes 1001, the flow resistance of the cross slip ring 10 during the operation can be reduced, and by providing the flow-through holes 1001, the oil sweeping area of the cross slip ring 10 can be directly reduced, thereby reducing the flow resistance and the power consumption of the compressor, so as to improve the energy efficiency of the compressor.

[0052] It is easy for those skilled in the art to understand that the advantageous technical features of the above-mentioned modes can be freely combined and superimposed without conflict.

[0053] The above only describes the preferred embodiments of the present application and should not be used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application. The above only describes the preferred embodiments of the present application and should not be used to limit the present application. For ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection scope of the present application.

Claims

1. A cross slip ring (10) characterized by: The ring body has an outer peripheral surface (10b) and an inner hole (10a), and the outer peripheral surface (10b) has an arc-shaped chamfered surface (103) at at least one end in the center line direction of the inner hole (10a); The ring body also has a flow-through hole (1001) extending from the outer peripheral surface (10b) to the hole wall of the inner hole (10a), and the flow-through hole (1001) extends in a first direction (a), which is the movement direction of the cross slip ring (10) in the scroll compressor; The ring body has a first end (101) in the center line direction of the inner hole (10a), and the first end (101) is provided with the flow-through hole (1001); the outer peripheral surface (10b) has the arc-shaped chamfered surface (103) at the first end (101); the flow-through hole (1001) of the first end (101) is defined as a first flow-through hole (1001a), and the arc-shaped chamfered surface (103) of the first end (101) is defined as a first arc-shaped chamfered surface (1031); wherein one end of the first flow-through hole (1001a) away from the inner hole (10a) penetrates the first arc-shaped chamfered surface (1031).

2. The cross slip ring (10) according to claim 1, wherein: When the outer peripheral surface (10b) has arc-shaped chamfered surfaces (103) at both ends in the center line direction of the inner hole (10a), the arc-shaped chamfered surfaces (103) at both ends in the center line direction of the inner hole (10a) are symmetrically arranged.

3. The cross slip ring (10) according to claim 1, wherein: One end of the first arc-shaped chamfered surface (1031) is connected with the end surface of the first end (101); the first flow-through hole (1001a) has a first side (10c) close to the end surface of the first end (101) and a second side (10d) away from the end surface of the first end (101); wherein in the center line direction of the inner hole (10a), the distance between the other end of the first arc-shaped chamfered surface (1031) and the end surface of the first end (101) is H, and the distance between the second side (10d) of the first flow-through hole (1001a) and the end surface of the first end (101) is H1, H1=1 / 3H~1 / 2H.

4. The cross slip ring (10) according to claim 1, wherein: The ring body has a second end (102) at the other end in the center line direction of the inner hole (10a); the second end (102) is also provided with the flow-through hole (1001); wherein the flow-through hole (1001) of the first end (101) and the flow-through hole (1001) of the second end (102) are symmetrically arranged.

5. The cross slip ring (10) according to any one of claims 1-4, wherein: The number of the flow-through holes (1001) is two or more, and includes a first a flow-through hole (1001b) and a second a flow-through hole (1001c), and the center lines of the first a flow-through hole (1001b) and the second a flow-through hole (1001c) coincide.

6. The slip ring (10) according to any one of claims 1-4, characterized in that: The outer circle radius of the ring body is R, and the width of the flow-through hole (1001) in the first direction (a) is L; The number of the flow-through holes (1001) is N, N is a positive integer greater than or equal to 2; wherein N*L=a*R, a=1 / 4~1 / 3.

7. A scroll compressor characterized by: The cross slip ring (10) according to any one of claims 1-6.

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