Scroll compressor

Abstract

The utility model relates to a scroll compressor. The scroll compressor comprises: a compression mechanism, the compression mechanism comprises a fixed scroll and a movable scroll, the movable scroll comprises an end plate and a hub extending axially from a side surface of the end plate; a main bearing seat; and a thrust plate, the thrust plate is fixed to the main bearing seat or formed integrally with the main bearing seat, the thrust plate comprises a body portion, the body portion is formed with a central through hole, the top surface of the body portion forms a thrust surface for the end plate, and the open end of the hub portion is located in the central through hole. The thrust plate also comprises a transverse flange portion, the transverse flange portion is located radially inward of the body portion, and the transverse flange portion is suitable for sealing with a structural member of the scroll compressor to surround the bottom of the central through hole, so that the central through hole surrounded by the bottom is suitable for accumulating lubricating oil and supplying lubricating oil to the thrust surface. The scroll compressor according to the utility model can improve the lubrication of the thrust surface for the compression mechanism and avoid wear of the thrust surface.

Description

Technical Field

[0001] The utility model relates to the field of compressors, and in particular to a thrust plate, a support assembly, a cross ring and a scroll compressor. Background Art

[0002] The contents of this section merely provide background information related to the present invention and may not constitute prior art.

[0003] During the operation of the scroll compressor, as the rotating shaft of the scroll compressor rotates, the movable scroll of the compression mechanism moves relative to the fixed scroll. During this process, an axial force is generated on the thrust surface between the thrust plate and the movable scroll, which may cause wear of the thrust surface. In addition, as the requirements for compressor performance increase, more and more compressors have added jet enthalpy increase designs. However, the jet enthalpy increase design will further increase the axial force borne by the thrust surface between the thrust plate and the movable scroll, increasing the risk of thrust surface wear. Wear of the thrust surface will limit the performance and design of the compressor.

[0004] In order to avoid wear of the thrust surface, lubrication of the thrust surface is crucial. In the existing design, as the rotating shaft of the scroll compressor rotates, the lubricating oil is thrown onto the thrust surface through the radial gap between the hub of the movable scroll and the thrust plate to provide lubrication of the thrust surface. However, due to the compact design of the scroll compressor, the radial gap formed between the hub of the movable scroll and the thrust plate is usually small, which is not conducive to splashing the lubricating oil onto the thrust surface between the thrust plate and the movable scroll, making it difficult to provide sufficient lubrication to the thrust surface. If the lubrication of the thrust surface is insufficient, it often causes wear of the thrust surface.

[0005] Therefore, it is necessary to improve the lubrication of the thrust surface of the compression mechanism to overcome the above-mentioned problems that may occur, reduce the wear of the thrust surface, and improve the performance of the scroll compressor. Utility Model Content

[0006] One object of the present invention is to solve at least one of the above problems. One object of the present invention is to improve the lubrication of the thrust surface of the compression mechanism. Another object of the present invention is to reduce the power consumption of the scroll compressor and improve the performance of the scroll compressor.

[0007] One aspect of the utility model is to provide a scroll compressor, comprising: a compression mechanism, the compression mechanism comprising a fixed scroll and a movable scroll, the movable scroll comprising an end plate and a hub extending axially from a side surface of the end plate; a main bearing seat; and a thrust plate, the thrust plate being fixed to the main bearing seat or formed integrally with the main bearing seat, the thrust plate comprising a body portion, the body portion being formed with a central through hole, the top surface of the body portion forming a thrust surface for the end plate, and the open end of the hub portion being located in the central through hole. The thrust plate also comprises a transverse flange portion, the transverse flange portion being located radially inward of the body portion, and the transverse flange portion being adapted to seal with a structural member of the scroll compressor to surround the bottom of the central through hole, so that the central through hole with the bottom surrounded is adapted to accumulate lubricating oil and supply the lubricating oil to the thrust surface.

[0008] In one embodiment, the lateral flange portion is integrally formed with the body portion.

[0009] In one embodiment, the body portion includes a first body portion and a second body portion, the second body portion is attached to the first body portion, and the second body portion includes a lateral flange portion.

[0010] In one embodiment, a transverse through hole or a plurality of transverse through holes spaced apart from each other along the circumferential direction of the main body is provided at the axial upper end portion of the main body, the transverse through hole being located below the thrust surface and extending from the inner circumferential surface of the main body to the outer circumferential surface of the main body, so that the lubricating oil accumulated in the central through hole flows through the transverse through hole to the outer circumferential side of the main body to be supplied to the thrust surface.

[0011] In one embodiment, the scroll compressor further comprises a cross ring, the cross ring comprising: a ring body; a protrusion, the protrusion being arranged on the ring body and used to guide the movable scroll member to move relative to the fixed scroll member. The ring body is provided with a sink groove, the sink groove being suitable for storing lubricating oil, and the lubricating oil stored in the sink groove is supplied to the thrust surface as the cross ring reciprocates.

[0012] In one embodiment, the protrusions include a first pair of protrusions opposite to each other, the first pair of protrusions protrude axially upward from the ring body and are suitable for cooperating with the fixed scroll member. The sink groove is arranged radially inside the first pair of protrusions.

[0013] In one embodiment, the end plate is provided with an oil passage and an oil extraction port, the oil passage extending from the outer peripheral surface of the end plate toward the radial inner side, the oil extraction port connecting the oil passage with the interior of the hub, so that the lubricating oil in the hub flows out of the end plate through the oil extraction port and the oil passage. The trough is suitable for storing the lubricating oil flowing out of the oil passage.

[0014] In one embodiment, the scroll compressor further comprises a rotating shaft, an upper end portion of the rotating shaft is rotatably supported by a main bearing seat, and the structural member is the rotating shaft or a balancing block mounted on the rotating shaft.

[0015] In one embodiment, an oil drain hole is provided on the bottom wall of the main bearing seat.

[0016] Another aspect of the utility model is to provide a scroll compressor, comprising: a compression mechanism, the compression mechanism comprising a fixed scroll and a movable scroll, the movable scroll comprising an end plate and a hub extending axially from a side surface of the end plate; a main bearing seat; and a thrust plate, the thrust plate being fixed to the main bearing seat or formed integrally with the main bearing seat, the thrust plate comprising a body portion, the body portion being formed with a central through hole, the top surface of the body portion forming a thrust surface for the end plate, and the hub portion being at least partially located in the central through hole. An axial upper end portion of the body portion is provided with a transverse through hole or a plurality of transverse through holes spaced apart from each other along the circumferential direction of the body portion, the transverse through hole being located below the thrust surface and extending from the inner peripheral surface of the body portion to the outer peripheral surface of the body portion, so that the transverse through hole allows lubricating oil to flow through the transverse through hole to the outer peripheral side of the body portion to be supplied to the thrust surface.

[0017] In one embodiment, the transverse through-holes extend in a radial direction of the central through-hole.

[0018] In one embodiment, the scroll compressor further comprises an Oldham ring configured to guide the movable scroll to move relative to the fixed scroll, and adapted to supply lubricating oil flowing from the transverse through hole to the outer peripheral side of the body portion to the thrust surface.

[0019] In one embodiment, the cross ring includes a ring body, the ring body is provided with a sink groove, the sink groove is suitable for storing lubricating oil, and the lubricating oil stored in the sink groove is supplied to the thrust surface as the cross ring reciprocates.

[0020] In one embodiment, the end plate is provided with an oil passage and an oil extraction port, the oil passage extends from the outer peripheral surface of the end plate toward the radial inner side, and the oil extraction port connects the oil passage with the interior of the hub, so that the lubricating oil in the hub is supplied to the outer peripheral side of the end plate through the oil extraction port and the oil passage to be supplied to the thrust surface.

[0021] Another aspect of the utility model is to provide a scroll compressor, comprising: a compression mechanism, the compression mechanism comprising a fixed scroll and a movable scroll, the movable scroll comprising an end plate and a hub extending axially from a side surface of the end plate; a main bearing seat; a thrust plate, the thrust plate is fixed to the main bearing seat or formed integrally with the main bearing seat, the thrust plate comprises a body portion, the body portion is formed with a central through hole, the top surface of the body portion forms a thrust surface for the end plate, and the hub portion is at least partially located in the central through hole; and a cross ring. The cross ring comprises: a ring body; and a protrusion. The protrusion comprises: a first pair of protrusions opposite to each other, the first pair of protrusions are suitable for matching with a stationary member; and a second pair of protrusions opposite to each other, the second pair of protrusions are arranged alternately with the first pair of protrusions, and the second pair of protrusions are suitable for matching with a movable scroll of the compression mechanism. The ring body is provided with a sink, the sink is suitable for storing lubricating oil, and the lubricating oil stored in the sink is supplied to the thrust surface as the cross ring reciprocates.

[0022] In one embodiment, the end plate is provided with an oil passage and an oil extraction port, wherein the oil passage extends from the outer peripheral surface of the end plate toward the radial inner side, and the oil extraction port connects the oil passage with the interior of the hub, so that the lubricating oil in the hub flows out of the end plate through the oil extraction port and the oil passage. The trough is suitable for storing the lubricating oil flowing out of the oil passage.

[0023] In one embodiment, the recess is located radially inward of the protrusion.

[0024] In one embodiment, the recessed groove is located radially inside a protrusion that protrudes axially upward from the ring body.

[0025] In one embodiment, the first pair of protrusions protrude axially upward from the ring body, the stationary member is a fixed scroll member, and the sink groove is located radially inward of the first pair of protrusions.

[0026] In one embodiment, the oil passage includes a first oil passage and a second oil passage, the oil extraction port includes a first oil extraction port and a second oil extraction port, the first oil extraction port connects the first oil passage with the interior of the hub, and the second oil extraction port connects the second oil passage with the interior of the hub. The lubricating oil in the hub is supplied to the sink through the first oil extraction port, the first oil passage, the second oil extraction port, and the second oil passage.

[0027] In one embodiment, the sink comprises at least one pair of sinks facing each other.

[0028] The utility model provides an improved scroll compressor. The scroll compressor according to the utility model can improve the lubrication of the thrust surface of the compression mechanism and avoid the wear of the thrust surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The following will describe the embodiments of the present invention by way of example only with reference to the accompanying drawings. In the accompanying drawings, the same features or components are represented by the same reference numerals, and the drawings are not necessarily drawn to scale, and in the accompanying drawings:

[0030] Figure 1 A longitudinal sectional view of a scroll compressor according to a first embodiment of the present invention is shown;

[0031] Figure 2 Shows Figure 1 A partial enlarged view of

[0032] Figure 3 A top view of a thrust plate of a scroll compressor according to a first embodiment of the present utility model is shown;

[0033] Figure 4 Shown along Figure 3 A longitudinal cross-sectional view taken along the cutting line AA in FIG.

[0034] Figure 5 A longitudinal sectional view of a thrust plate according to a modified example of the utility model is shown;

[0035] Figure 6 A partial longitudinal sectional view showing a scroll compressor of a comparative example;

[0036] Figure 7 A perspective view showing a compression mechanism and a support assembly of a scroll compressor according to a second embodiment of the present utility model;

[0037] Figure 8 Shown along Figure 7 A longitudinal cross-sectional view taken along the section line BB in FIG.

[0038] Fig. 9 A perspective view of a cross ring of a scroll compressor according to a second embodiment of the present utility model is shown;

[0039] Fig.10 A partial longitudinal sectional view of a scroll compressor according to a third embodiment of the present invention is shown;

[0040] Fig.11 Shown along Fig.10 A cross-sectional view taken along the cutting line CC in FIG.

[0041] Fig.12 A longitudinal sectional view showing a thrust plate of a scroll compressor according to a third embodiment of the present invention; and

[0042] Fig.13 A partial longitudinal sectional view of a scroll compressor according to a modified example of the present invention is shown. DETAILED DESCRIPTION

[0043] The following description is merely exemplary in nature and is not intended to limit the present invention, its application and use. It should be understood that in all of the accompanying drawings, similar reference numerals indicate the same or similar parts and features. The various drawings only schematically represent the concepts and principles of the embodiments of the present invention, and do not necessarily show the specific dimensions and proportions of the various embodiments of the present invention. Specific parts in specific drawings may be exaggerated to illustrate the relevant details or structures of the embodiments of the present invention.

[0044] In the description of the embodiments of the present invention, the directional terms related to "upper", "lower", "left", and "right" are used to describe the upper, lower, left, and right positions of the views shown in the accompanying drawings. In practical applications, the positional relationships of "upper", "lower", "left", and "right" used in this document can be defined according to actual conditions, and these relationships can be reversed.

[0045] Figure 1 A longitudinal sectional view of a scroll compressor 1 according to a first embodiment of the utility model is shown. The scroll compressor 1 includes a compression mechanism 10, a bearing assembly 20, and a rotating shaft 30. The compression mechanism 10 includes a fixed scroll 11 and a movable scroll 12. The scrolls of the fixed scroll 11 and the movable scroll 12 are engaged with each other to form a series of compression chambers. The movable scroll 12 is supported by the bearing assembly 20 and driven by the rotating shaft 30 to move relative to the fixed scroll 11. An eccentric crank pin 31 is provided at the top of the upper end of the rotating shaft 30. The eccentric crank pin 31 is accommodated in the hub 122 of the movable scroll 12 via a driving bearing 32. As the rotating shaft 30 rotates, the eccentric crank pin 31 drives the movable scroll 12 to move relative to the fixed scroll 11 via the driving bearing 32 to compress the working fluid in the compression chamber. The movement of the movable scroll 12 relative to the fixed scroll 11 is guided by the cross ring 40.

[0046] Figure 2 Shows Figure 1 A partially enlarged view shows the support assembly 20 and the compression mechanism 10 of the scroll compressor 1. The support assembly 20 includes a main bearing seat 21 and a thrust plate 22. In the example shown in the figure, the thrust plate 22 is fixed to the main bearing seat 21. However, the utility model is not limited to this, and in other examples according to the utility model, the thrust plate 22 can be formed integrally with the main bearing seat 21. The main bearing seat 21 is formed as a hollow structure, including a main body portion 211, a bottom wall 212 and a central support portion 213. The thrust plate 22 is fixed in the main body portion 211. The central support portion 213 is configured to support the upper end portion of the rotating shaft 30 in a rotatable manner. The bottom wall 212 connects the main body portion 211 and the central support portion 213, and is provided with an oil drain hole 2121.

[0047] Figure 3 shows a top view of the thrust plate 22, and Figure 4 Shown along Figure 3 A longitudinal cross-sectional view of the thrust plate 22 taken along the section line AA in FIG. The thrust plate 22 includes a body portion 221, which is hollow and has a central through hole 222 formed therein. The top surface of the body portion 221 faces the lower surface of the end plate 121 of the movable scroll member 12, forming a thrust surface 2211 for the end plate 121 of the movable scroll member 12. The thrust plate 22 also includes a transverse flange portion 223, which is located radially inward of the body portion 221. When installed in place, the transverse flange portion 223 is adapted to cooperate with the structural member of the scroll compressor 1 to surround the bottom of the central through hole 222, so as to semi-seal or seal the bottom of the central through hole 222. In the example shown in the figure, the transverse flange portion 223 extends radially inward relative to the body portion 221. However, the present invention is not limited thereto, and in other examples according to the present invention, the lateral flange portion 223 may extend to the radial inner side of the body portion 221 at an angle relative to the body portion 221. Figure 1 and Figure 2 In the example shown in the figure, a counterweight portion 33 is installed at the upper end portion of the rotating shaft 30 of the scroll compressor 1. When installed in place, the counterweight portion 33 is accommodated in the hollow inner cavity of the main bearing seat 21. The above-mentioned structural member that cooperates with the lateral flange portion 223 of the thrust plate 22 is the counterweight portion 33. Specifically, the lateral flange portion 223 of the thrust plate 22 is matched to the outer peripheral surface of the central flange portion of the counterweight portion 33. Preferably, an annular seal S is provided between the inner peripheral surface of the lateral flange portion 223 and the outer peripheral surface of the central flange portion of the counterweight portion 33, so that the lateral flange portion 223 is sealed and matched with the outer peripheral surface of the central flange portion of the counterweight portion 33, thereby sealing the bottom of the central through hole 222.

[0048] However, the present invention is not limited to this. In other examples according to the present invention, the above-mentioned structural member that cooperates with the lateral flange portion 223 of the thrust plate 22 can be the rotating shaft 30. That is, the lateral flange portion 223 of the thrust plate 22 can cooperate with the upper end portion of the rotating shaft 30. And, it should be noted here that the counterweight portion 33 is not necessary. In other modified examples of the scroll compressor according to the first embodiment of the present invention, the scroll compressor 1 may not be provided with the above-mentioned counterweight portion 33.

[0049] When installed in place, the bottom of the central through hole 222 is semi-sealed or sealed by the cooperation of the lateral flange portion 223 and the above-mentioned structural member. The open end of the hub portion 122 of the movable scroll member 12 is located in the central through hole 222. Therefore, during the operation of the scroll compressor 1, the lubricating oil supplied to the drive bearing 32 in the hub portion 122 of the movable scroll member 12 flows out from the oil outlet (for example, the open end of the hub portion 122) and accumulates in the central through hole 222 whose bottom is semi-sealed or sealed. The top opening of the central through hole 222 can supply the lubricating oil from the inner peripheral side of the body portion 221 of the thrust plate 22 to the thrust surface 2211. Since the radial clearance between the radial inner wall of the main body 221 of the thrust plate 22 and the outer peripheral surface of the hub 122 of the movable scroll member 12 is usually small, and the oil output of the driving bearing 32 is large, the lubricating oil accumulated in the central through hole 222 whose bottom is semi-sealed or sealed can easily reach the top opening of the central through hole 222, and thus can be easily supplied to the thrust surface 2211, thereby ensuring sufficient lubrication of the thrust surface 2211.

[0050] In the example shown in the figure, the lateral flange portion 223 is formed integrally with the body portion 221, so that the structure of the thrust plate 22 is simple and easy to assemble. However, the utility model is not limited thereto. In other examples according to the utility model, the thrust plate 22 can be an assembly formed by two or more parts.

[0051] Figure 5 FIG. 2 is a longitudinal cross-sectional view of a thrust plate 22A of a scroll compressor according to a modified example of the first embodiment of the present utility model. Figure 4 The thrust plate 22 shown in FIG. 1 is similar in structure to the thrust plate 22 shown in FIG. 1 , except for the structure of the body portion of the thrust plate 22A. In the drawings, the same parts are represented by the same reference numerals, and the description thereof will not be repeated.

[0052] like Figure 5 As shown, the top surface of the body portion 221A of the thrust plate 22A forms a thrust surface 2211 for the end plate of the fixed scroll. The body portion 221A includes a first body portion 2212 and a second body portion 2213, and the second body portion 2213 includes a transverse flange portion 223. The second body portion 2213 is attached to the first body portion 2212. For example, the second body portion 2213 can be attached to the first body portion 2212 by screws or by welding or other suitable means. Preferably, the first body portion 2212 and the second body portion 2213 are made of different materials, so that the thrust plate can be better optimized according to the functions of each part. Preferably, the first body portion 2212 is sealingly attached to the second body portion 2213, for example, a seal (not shown in the figure) can be provided at the joint between the first body portion 2212 and the second body portion 2213.

[0053] Figure 6 A partial longitudinal cross-sectional view of a scroll compressor 1B of a comparative example is shown, showing the compression mechanism and the support assembly of the scroll compressor 1B. The structure of the scroll compressor 1B is substantially the same as that of the scroll compressor 1 according to the utility model, except that the support assembly is constructed, and more specifically, the thrust plate of the support assembly of the comparative example does not have a transverse flange portion. In the drawings, the same components are denoted by the same reference numerals, and the description thereof will not be repeated.

[0054] like Figure 6 As shown, the movable scroll member 12 of the scroll compressor 1B is supported by a support assembly 20B. The support assembly 20B includes a main bearing housing 21 and a thrust plate 22B fixed in the hollow inner cavity of the main bearing housing 21. The top surface of the thrust plate 22B forms a thrust surface 221B for the end plate 121 of the movable scroll member 12.

[0055] During the operation of the scroll compressor 1B, the lubricating oil supplied to the hub 122 of the movable scroll member 12 flows out from the open end of the hub 122 and accumulates in the hollow inner cavity of the main bearing seat 21 of the support assembly 20. When a certain amount of lubricating oil accumulates, the lubricating oil flows out from the oil drain hole (not shown in the figure) provided on the side wall of the body of the main bearing seat 21. During the operation of the scroll compressor 1B, the counterweight 33 rotates with the rotation of the rotating shaft 30, stirring the lubricating oil accumulated in the hollow inner cavity of the main bearing seat 21, so that the lubricating oil is thrown from the space between the thrust plate 22B and the hub 122 to the thrust surface 221B.

[0056] However, due to the consideration of the compact design of the scroll compressor, the space inside the scroll compressor is limited, the inner diameter of the thrust plate 22B is small, and the radial gap formed between the thrust plate 22B and the hub 122 of the movable scroll 12 is small, which is not conducive to splashing the lubricating oil onto the thrust surface 221B. In addition, in the existing design, the oil drain hole of the main bearing seat 21 is usually located on the action path of the centrifugal force on the lubricating oil and is located at a low position, so that during the rotation of the counterweight part 33, the lubricating oil is easily thrown out from the oil drain hole and cannot reach the thrust surface 221B above. Therefore, during the operation of the scroll compressor 1B, especially when operating under high load conditions, the lubrication of the thrust surface 221B is insufficient, and the problem of wear of the thrust surface 221B is easy to occur.

[0057] In contrast, in the scroll compressor 1 according to the first embodiment of the present invention, the thrust plate 22 further includes a lateral flange portion 223. When installed in place, the lateral flange portion 223 cooperates with the structural member (the counterweight portion 33 or the rotating shaft 30) of the scroll compressor 1 to semi-seal or seal the bottom of the central through hole 222 of the thrust plate 22, and the oil outlet of the drive bearing 32 in the hub portion 122 of the movable scroll member 12 (for example, the open end of the hub portion 122) is located in the central through hole 222 whose bottom is semi-sealed or sealed. Through the above design, the lubricating oil flowing out from the open end of the hub portion 122 accumulates in the central through hole 222 whose bottom is semi-sealed or sealed at the thrust plate 22, and is easily accumulated to the top opening of the central through hole 222. Therefore, through the above design of the thrust plate 22, it is easy to supply the lubricating oil from the inner peripheral side of the thrust plate 22 to the thrust surface 2211, thereby ensuring effective lubrication of the thrust surface 2211. On the other hand, since the lubricating oil flowing out of the driving bearing 32 is mainly accumulated in the central through hole 222 sealed at the bottom of the thrust plate 22, only a small amount of lubricating oil is accumulated in the hollow inner cavity of the main bearing seat 21. Therefore, during operation, the counterweight 33 does not stir the lubricating oil, thereby saving power consumption and improving performance. In addition, an oil drain hole 2121 can be provided on the bottom wall of the main bearing seat 21, so that the lubricating oil in the hollow inner cavity of the main bearing seat 21 can be discharged in time, thereby further reducing the lubricating oil accumulated in the hollow inner cavity of the main bearing seat 21.

[0058] Figure 7 A perspective view showing a compression mechanism and a support assembly of a scroll compressor 1C according to a second embodiment of the present invention is shown. Figure 8 Shown along Figure 7 In the drawings, the same or similar reference numerals are used to represent the same structures as those of the scroll compressor 1 according to the first embodiment of the present invention.

[0059] The compression mechanism of the scroll compressor 1C includes a fixed scroll 11 and a movable scroll 12C. The scroll compressor 1C is provided with an active oil supply passage for the thrust surface of the movable scroll 12C. The end plate 121C of the movable scroll 12C is provided with an oil passage and an oil intake port. The oil passage extends from the outer peripheral surface of the end plate 121C toward the radial inner side. The oil intake port connects the oil passage with the interior of the hub 122C, so that the lubricating oil in the hub 122C flows out of the end plate 121C through the oil intake port and the oil passage. Figures 7 to 9In the example shown, the end plate 121C is provided with a first oil extraction port 1211, a second oil extraction port 1212, a first oil passage 1213, and a second oil passage 1214. One end of the first oil extraction port 1211 leads to the inside of the hub 122C, and the other end of the first oil extraction port 1211 leads to the first oil passage 1213. One end of the second oil extraction port 1212 leads to the inside of the hub 122C, and the other end of the second oil extraction port 1212 leads to the second oil passage 1214. The first oil passage 1213 extends from the outer peripheral surface of the end plate 121C toward the radial inside (for example, in the radial direction) to the first oil extraction port 1211, and the first oil extraction port 1211 connects the first oil passage 1213 with the inside of the hub 122C. The second oil passage 1214 extends radially inward (eg, along the radial direction) from the outer peripheral surface of the end plate 121C to the second oil extraction port 1212 , and the second oil extraction port 1212 connects the second oil passage 1214 with the interior of the hub 122C.

[0060] The scroll compressor 1C further includes an Oldham ring 40C. Fig. 9 FIG. 4 shows a perspective view of a cross ring 40C. Fig. 9 As shown, the cross ring 40C includes a ring body 41 and a protrusion provided on the ring body 41, and the protrusion is provided to guide the movable scroll 12C to move relative to the fixed scroll 11. The ring body 41 is provided with a sink groove, which is suitable for storing lubricating oil, and the lubricating oil stored in the sink groove is supplied to the thrust surface 201 of the end plate 121C for the movable scroll 12C as the cross ring 40C reciprocates. The sink groove may include at least one pair of sink grooves opposite to each other, and preferably, the sink groove is located radially inside the protrusion. More preferably, the sink groove is located radially inside the protrusion protruding axially upward from the ring body 41.

[0061] In the example shown in the figure, the protrusions include a first pair of protrusions 42, 43 and a second pair of protrusions 44, 45. The first pair of protrusions 42, 43 are opposite to each other and are suitable for cooperating with a stationary part. The second pair of protrusions 44, 45 are opposite to each other, arranged alternately with the first pair of protrusions 42, 43, and are suitable for cooperating with the movable scroll member 12C. In this article, a "stationary part" is a relatively fixed part relative to a moving part, and can be a part that can move within a certain range. For example, a "stationary part" can be a part with axial flexibility or radial flexibility. Figures 7 to 9 In the example shown in , the first pair of protrusions 42, 43 protrude axially upward from the ring body 41, and the second pair of protrusions 44, 45 also protrude axially upward from the ring body 42. The stationary member that cooperates with the first pair of protrusions 42, 43 is the fixed scroll 11. The fixed scroll 11 can have axial flexibility and can move within a certain range. Specifically, the first pair of protrusions 42, 43 are suitable for being engaged with a pair of mounting grooves 111, 112 (in Figure 8The second pair of protrusions 44, 45 are adapted to cooperate with a pair of mounting grooves (not shown) of the movable scroll member 12C.

[0062] The groove on the ring body 41 of the cross ring 40C may be located on the upper surface of the ring body 41 and is suitable for storing lubricating oil flowing out from the oil passage in the end plate 121C. The lubricating oil stored in the groove is supplied to the thrust surface 201 of the end plate 121C for the movable scroll member as the cross ring 40C reciprocates. Preferably, the groove is at least partially aligned with the first pair of protrusions 42, 43 and / or the second pair of protrusions 44, 45 in the circumferential direction and is located radially inside the first pair of protrusions 42, 43 and / or the second pair of protrusions 44, 45, so as to facilitate active oil supply to the first pair of protrusions 42, 43 and / or the second pair of protrusions 44, 45, thereby providing lubrication between the first pair of protrusions 42, 43 and / or the second pair of protrusions 44, 45 and the corresponding mounting structure. Figures 7 to 9 In the example shown in , and as Fig. 9 As best shown in FIG. 1 , the ring body 41 of the cross ring 40C is provided with a pair of recessed grooves 46, 47 that are at least partially aligned with the first pair of protrusions 42, 43 in the circumferential direction and are located radially inward of the first pair of protrusions 42, 43. Specifically, the recessed groove 46 faces the protrusion 42 and is located radially inward of the protrusion 42, and is recessed relative to the upper surface of the ring body 41. The recessed groove 47 faces the protrusion 43 and is located radially inward of the protrusion 43, and is recessed relative to the upper surface of the ring body 41.

[0063] Return to see Figure 8 When installed in place, the position of the outer port of the first oil passage 1213 of the end plate 121C of the movable scroll member 12C corresponds to the position of the sink groove 46, and the position of the outer port of the second oil passage 1214 of the end plate 121C of the movable scroll member 12C corresponds to the position of the sink groove 47, so that the lubricating oil flowing out of the first oil passage 1213 in the end plate 121C can flow into the sink groove 46, and the lubricating oil flowing out of the second oil passage 1214 in the end plate 121C can flow into the sink groove 47.

[0064] The scroll compressor 1C also includes a bearing assembly 20C. The surface of the bearing assembly 20C facing the end plate 121C is a thrust surface 201 of the end plate 121C for the movable scroll member 12C, and the hub 122C of the movable scroll member 12C is at least partially located in the central through hole of the thrust plate. In the example shown in the figure, the thrust plate of the bearing assembly 20C is formed integrally with the main bearing seat. The first oil extraction port 1211, the second oil extraction port 1212, the first oil passage 1213 and the second oil passage 1214 form an active oil supply passage for the thrust surface 201.

[0065] The lubricating oil flowing out of the active oil supply passage flows into the sink grooves 46 and 47. The sink grooves 46 and 47 are suitable for storing the lubricating oil and supplying the lubricating oil to the thrust surface 201 of the bearing assembly 20C. During the operation of the scroll compressor 1C, at least a portion of the lubricating oil supplied to the driving bearing 32 in the hub 122C of the movable scroll member 12C can flow out of the end plate 121C through the first oil extraction port 1211 and the first oil passage 1213 and accumulate in the sink groove 46 of the cross ring 40C, and can flow out of the end plate 121C through the second oil extraction port 1212 and the second oil passage 1214 and accumulate in the sink groove 47 of the cross ring 40C. When a certain amount of oil is accumulated, as the cross ring 40C reciprocates, the lubricating oil in the sink grooves 46 and 47 is supplied to the thrust surface 201, thereby actively supplying oil to the thrust surface 201 from the outer peripheral side of the thrust plate of the bearing assembly 20C, thereby achieving effective lubrication of the thrust surface 201. In addition, the lubricating oil accumulated in the recesses 46 and 47 can also actively supply oil to the first pair of protrusions 42 and 43 located radially outside the recesses 46 and 47, thereby providing lubrication between the first pair of protrusions 42 and 43 and the corresponding mounting structures.

[0066] The scroll compressor 1C according to the second embodiment of the present invention can improve the lubrication of the thrust surface 201 of the bearing assembly 20C. In addition, the scroll compressor 1C according to the second embodiment of the present invention does not need to change the contact state between the thrust surface 201 of the bearing assembly 20C and the end plate 121C of the movable scroll member 12C, and there is no need to modify the bearing assembly 20C.

[0067] Fig.10 is with Figure 8 A similar view shows a partial longitudinal cross-sectional view of a scroll compressor 1D according to a third embodiment of the present invention, showing a compression mechanism and a support assembly, Fig.11 Shown along Fig.10 The scroll compressor 1D has substantially the same configuration as the scroll compressor 1 according to the first embodiment of the present invention, except for the design of the thrust plate 22D of the bearing assembly 20D.

[0068] The compression mechanism of the scroll compressor 1D includes a fixed scroll 11 and a movable scroll 12. The scroll compressor 1D is provided with an active oil supply passage for the thrust surface of the movable scroll 12. The movement of the movable scroll 12 relative to the fixed scroll 11 is guided by the cross ring 40D. The first pair of protrusions on the ring body of the cross ring 40D cooperate with the stationary parts of the scroll compressor 1D (for example, the fixed scroll 11 or the support assembly 20D, for example, the thrust plate 22D or the main bearing seat 21D of the support assembly 20D), and the second pair of protrusions on the ring body of the cross ring 40D cooperate with the movable scroll 12.

[0069] The movable scroll 12 is supported by a support assembly 20D. The support assembly 20D includes a main bearing seat 21D and a thrust plate 22D. The main bearing seat 21D is similar in structure to the main bearing seat 21 of the scroll compressor 1 according to the first embodiment of the present invention, and includes a body portion 211D, a central support portion 213, and a bottom wall 212D connecting the body portion 211 and the central support portion 213. The difference is that the oil drain hole (not shown in the figure) of the main bearing seat 21D is not arranged on the bottom wall 212D, but on the side wall of the body portion 221D. The top surface of the thrust plate 22D forms a thrust surface 2211D for the end plate 121 of the movable scroll 12.

[0070] Fig.12 : shows a longitudinal cross-sectional view of the thrust plate 22D. The axial upper end portion of the body portion 221D of the thrust plate 22D is provided with a transverse through hole 224 or a plurality of transverse through holes 224 spaced apart from each other in the circumferential direction of the body portion 221D. The transverse through hole 224 is located below the thrust surface 2211D, and extends from the inner peripheral surface of the body portion 221D of the thrust plate 22D to the outer peripheral surface of the body portion 221D. One end of the transverse through hole 224 leads to the central through hole 222D of the thrust plate 22D, and the other end of the transverse through hole 224 passes through the outer peripheral surface of the body portion 221D. Figures 10 to 12 In the example shown, four transverse through holes 224 are shown, which are spaced apart from each other and extend in the radial direction of the central through hole 222D. However, the present invention is not limited thereto. In other examples according to the present invention, the body portion 221D of the thrust plate 22D may be provided with fewer or more transverse through holes, and the transverse through holes may extend in other directions, for example, they may extend in the body portion 221D in the tangential direction of the central through hole 222D. The transverse through holes 224 form an active oil supply passage of the thrust surface 2211D.

[0071] During the operation of the scroll compressor 1D according to the third embodiment of the present invention, the movable scroll 12 is supported by the support assembly 20D, the hub 122 of the movable scroll 12 is at least partially located in the central through hole 222D of the thrust plate 22D, and the lubricating oil supplied to the drive bearing 32 in the movable scroll 12 flows out of the hub 122 from the open end of the hub 122 and accumulates in the hollow inner cavity of the main bearing seat 21D. Fig.10Under the stirring of the main bearing seat 21D (not shown in the figure), the lubricating oil accumulated in the main bearing seat 21D is thrown upward to the radial space between the inner peripheral wall of the thrust plate 22D and the hub 122 of the movable scroll 12, that is, enters the central through hole 222D of the thrust plate 22D, and flows out to the step surface 225 of the thrust plate 22D through the transverse through hole 224. As the cross ring 40D reciprocates on the step surface 225 of the thrust plate 22D, the lubricating oil is supplied from the outer peripheral side of the body 221D of the thrust plate 22D to the thrust surface 2211D, realizing the active oil supply of the thrust surface 2211D. In addition, the lubricating oil is also supplied to the protrusion of the cross ring 40D (not shown in the figure), actively supplying oil between the protrusion of the cross ring 40D and the corresponding mounting structure to provide lubrication.

[0072] The scroll compressor 1D according to the third embodiment of the present invention can achieve beneficial technical effects similar to those of other embodiments of the present invention, and can ensure lubrication of the thrust surface of the movable scroll member 12 .

[0073] Fig.13 A partial longitudinal sectional view of a scroll compressor 1E according to a modified example of the third embodiment of the present utility model is shown, showing a compression mechanism and a support assembly of the scroll compressor 1E according to the modified example. The scroll compressor 1E according to the modified example has substantially the same structure as the scroll compressor 1D according to the third embodiment of the present utility model, except for the structure of the thrust plate 22E of the support assembly 20E of the scroll compressor 1E. Furthermore, the scroll compressor 1E according to the modified example has substantially the same structure as the scroll compressor 1 according to the first embodiment of the present utility model, except for the thrust plate 22E of the support assembly 20E of the scroll compressor 1E being provided with a transverse through hole 224.

[0074] The bearing assembly 20E includes a main bearing housing 21 and a thrust plate 22E. The top surface of the thrust plate 22E forms a thrust surface 2211E for the end plate of the movable scroll member. Figures 10 to 12The difference between the thrust plate 22D shown in the figure is that the thrust plate 22E also includes a lateral flange portion 223. The lateral flange portion 223 is formed integrally with the main body of the thrust plate 22E. However, the utility model is not limited to this. In other modified examples, the thrust plate 22E can be an assembly including multiple parts. When installed in place, the lateral flange portion 223 cooperates with the structural member of the scroll compressor (the upper end of the rotating shaft 30 or the counterweight portion 33 installed on the upper end of the rotating shaft 30) to semi-seal or seal the bottom of the central through hole of the thrust plate 22E, and the oil outlet of the drive bearing 32 in the hub 122 of the movable scroll member (the open end of the hub 122) is located in the semi-sealed or sealed central through hole at the bottom of the thrust plate 22E. During the operation of the scroll compressor 1E, the lubricating oil supplied to the driving bearing 32 in the hub 122 flows out from the open end of the hub 122 and flows into the semi-sealed or sealed central through hole at the bottom of the thrust plate 22E, and accumulates in the semi-sealed or sealed central through hole at the bottom of the thrust plate 22E. When the accumulation reaches the position of the transverse through hole 224, at least a part of the lubricating oil can flow out of the body of the thrust plate 22E through the transverse through hole 224, and with the reciprocating motion of the cross ring 40D, the lubricating oil is supplied from the outer peripheral side of the body of the thrust plate 22E to the thrust surface 2211E.

[0075] The scroll compressor 1E according to this modified example can achieve the above-mentioned beneficial technical effects similar to those of the scroll compressor 1D according to the third embodiment of the present invention. Moreover, compared with the scroll compressor 1D according to the third embodiment of the present invention, the lubricating oil accumulates in a smaller radial space (in the sealed central through hole at the bottom of the thrust plate 22E), and is more likely to accumulate at the location of the transverse through hole 224, so that the lubricating oil is easily actively supplied from the outer peripheral side to the thrust surface 2211E, and is supplied between the protrusion of the cross slide 40D and the corresponding mounting structure.

[0076] The scroll compressor according to the preferred embodiment of the utility model is introduced above. Through the above design of the utility model, the oil supply for the thrust surface of the compression mechanism can be improved, the lubrication of the thrust surface can be improved, and the wear of the thrust surface can be reduced.

[0077] In combination with the above Figures 7 to 9In the scroll compressor 1C according to the second embodiment of the present invention shown, the support assembly 20C is an integrally formed main bearing seat, and the thrust plate is integrally formed as a part of the main bearing seat. However, the present invention is not limited to this, and in other modified examples according to the second embodiment of the present invention, the support assembly 20C may include a main bearing seat and a thrust plate fixed to the main bearing seat. The thrust plate may be, for example, the thrust plate 22 of the scroll compressor 1 according to the first embodiment of the present invention or the thrust plate 22A according to the modified example, or may be the thrust plate 22D of the scroll compressor 1D according to the third embodiment of the present invention, or may be the thrust plate 22E of the scroll compressor 1E according to the modified example of the third embodiment of the present invention.

[0078] In combination with the above Figures 7 to 9 In the scroll compressor 1C according to the second embodiment of the utility model shown, a pair of sink grooves is provided on the ring body 41 of the cross ring 40C, and the pair of sink grooves is provided on the radial inner side of the first pair of protrusions of the cross ring 40C that cooperate with the fixed scroll member. However, the utility model is not limited to this. In a modified example according to the second embodiment of the utility model, a pair of sink grooves 46, 47 on the cross ring 40C can be provided on the radial inner side of the second pair of protrusions of the cross ring 40C that cooperate with the movable scroll member. In a modified example according to the second embodiment of the utility model, the first pair of protrusions of the cross ring 40C can cooperate with other stationary parts of the scroll compressor (for example, the main bearing seat or the thrust plate). In another modified example according to the second embodiment of the utility model, only one sink groove can be provided on the ring body 41 of the cross ring 40C, or more sink grooves can be provided.

[0079] In combination with the above Figures 7 to 9 In the scroll compressor 1C according to the second embodiment of the utility model shown, the second pair of protrusions 44, 45 of the cross ring 40C protrude axially upward from the ring body 41 to cooperate with the movable scroll member 12C. However, the utility model is not limited to this. In another modified example of the second embodiment of the utility model, the second pair of protrusions of the cross ring 40C can protrude axially downward from the ring body 41 to cooperate with the movable scroll member.

[0080] In combination with the above Figures 7 to 9 In the scroll compressor 1C according to the second embodiment of the utility model shown, the end plate 121C of the movable scroll member 12C is provided with two oil passages (i.e., the first oil passage 1213 and the second oil passage 1214) and two corresponding oil extraction ports (i.e., the first oil extraction port 1211 and the second oil extraction port 1212). However, the utility model is not limited thereto. In other modified examples of the second embodiment of the utility model, the end plate 121C of the movable scroll member 12C may be provided with fewer or more oil passages and oil extraction ports.

[0081] In addition, the various embodiments of the present invention can be combined with each other. Figures 1 to 4 In the scroll compressor 1 according to the first embodiment of the utility model, the scroll compressor 1 can be combined with Figures 7 to 9 The design of the active oil supply passage of the end plate 121C and the cross ring 40C of the scroll compressor 1C according to the second embodiment of the present invention shown in FIG, and / or can be combined with the active oil supply passage of the end plate 121C and the cross ring 40C as shown in FIG. Figures 10 to 12 2 shows the design of the transverse through hole 224 of the thrust plate 22D of the scroll compressor 1D according to the third embodiment of the present invention.

[0082] Here, the exemplary embodiments of the utility model have been described in detail, but it should be understood that the utility model is not limited to the specific embodiments described and shown in detail above. Without departing from the purpose and scope of the utility model, those skilled in the art can make various modifications and variations to the utility model. All these modifications and variations fall within the scope of the utility model. Moreover, all components described herein can be replaced by other technically equivalent components.

Claims

1. A scroll compressor, comprising: A compression mechanism, the compression mechanism comprising a fixed scroll and a movable scroll, the movable scroll comprising an end plate and a hub extending axially from a side surface of the end plate; Main bearing seat; as well as a thrust plate, the thrust plate being fixed to the main bearing seat or being formed integrally with the main bearing seat, the thrust plate comprising a body portion, the body portion being formed with a central through hole, the top surface of the body portion forming a thrust surface for the end plate, and the open end of the hub portion being located in the central through hole, It is characterized in that the thrust plate also includes a lateral flange portion, which is located radially inside the main body portion, and the lateral flange portion is suitable for sealingly cooperating with the structural member of the scroll compressor to surround the bottom of the central through hole, so that the central through hole with the surrounded bottom is suitable for accumulating lubricating oil and supplying the lubricating oil to the thrust surface.

2. The scroll compressor according to claim 1, characterized in that: The lateral flange portion is integrally formed with the body portion; or The body portion includes a first body portion and a second body portion, the second body portion is attached to the first body portion, and the second body portion includes the lateral flange portion.

3. The scroll compressor according to claim 1, characterized in that: The axial upper end portion of the main body is provided with a transverse through hole or a plurality of transverse through holes spaced apart from each other along the circumferential direction of the main body, the transverse through hole being located below the thrust surface and extending from the inner circumferential surface of the main body to the outer circumferential surface of the main body, so that the lubricating oil accumulated in the central through hole flows through the transverse through hole to the outer circumferential side of the main body to be supplied to the thrust surface.

4. The scroll compressor according to claim 1, characterized in that: The scroll compressor further comprises a cross ring, wherein the cross ring comprises: Ring body; a protrusion, the protrusion being arranged on the ring body and being used for guiding the movable scroll member to move relative to the fixed scroll member; The ring body is provided with a sink groove, which is suitable for storing lubricating oil, and the lubricating oil stored in the sink groove is supplied to the thrust surface along with the reciprocating motion of the cross ring.

5. The scroll compressor according to claim 4, characterized in that: The protrusions include a first pair of protrusions opposite to each other, the first pair of protrusions protrude axially upward from the ring body and are suitable for cooperating with the fixed scroll member; the sink groove is arranged radially inside the first pair of protrusions.

6. The scroll compressor according to claim 4, characterized in that: The end plate is provided with an oil passage and an oil extraction port. The oil passage extends radially inward from the outer peripheral surface of the end plate. The oil extraction port connects the oil passage with the interior of the hub, so that the lubricating oil in the hub flows out of the end plate through the oil extraction port and the oil passage. The trough is suitable for storing the lubricating oil flowing out of the oil passage.

7. The scroll compressor according to any one of claims 1 to 6, characterized in that: The scroll compressor further includes a rotating shaft, an upper end portion of which is rotatably supported by the main bearing seat; and Wherein, the structural member is the rotating shaft or a balancing block installed on the rotating shaft.

8. The scroll compressor according to any one of claims 1 to 6, characterized in that: An oil drain hole is arranged on the bottom wall of the main bearing seat.

9. A scroll compressor, comprising: A compression mechanism, the compression mechanism comprising a fixed scroll and a movable scroll, the movable scroll comprising an end plate and a hub extending axially from a side surface of the end plate; Main bearing seat; as well as a thrust plate, the thrust plate being fixed to the main bearing seat or being formed integrally with the main bearing seat, the thrust plate comprising a body portion, the body portion being formed with a central through hole, the top surface of the body portion forming a thrust surface for the end plate, and the hub portion being at least partially located in the central through hole, It is characterized in that the axial upper end portion of the main body is provided with a transverse through hole or a plurality of transverse through holes spaced apart from each other along the circumferential direction of the main body, the transverse through hole is located below the thrust surface and extends from the inner circumferential surface of the main body to the outer circumferential surface of the main body, so that the transverse through hole allows lubricating oil to flow through the transverse through hole to the outer circumferential side of the main body to be supplied to the thrust surface.

10. The scroll compressor according to claim 9, characterized in that: The transverse through hole extends in a radial direction of the central through hole.

11. The scroll compressor according to claim 9, characterized in that: The scroll compressor further includes an Oldham ring configured to guide the movable scroll member to move relative to the fixed scroll member and adapted to supply lubricating oil flowing from the transverse through hole to the outer peripheral side of the body portion to the thrust surface.

12. The scroll compressor according to claim 11, characterized in that: The cross ring includes a ring body, the ring body is provided with a sink groove, the sink groove is suitable for storing lubricating oil, and the lubricating oil stored in the sink groove is supplied to the thrust surface along with the reciprocating motion of the cross ring.

13. The scroll compressor according to claim 9, characterized in that: The end plate is provided with an oil passage and an oil extraction port, wherein the oil passage extends radially inward from the outer peripheral surface of the end plate, and the oil extraction port connects the oil passage with the interior of the hub portion, so that the lubricating oil in the hub portion is supplied to the outer peripheral side of the end plate through the oil extraction port and the oil passage to be supplied to the thrust surface.

14. A scroll compressor, comprising: A compression mechanism, the compression mechanism comprising a fixed scroll and a movable scroll, the movable scroll comprising an end plate and a hub extending axially from a side surface of the end plate; Main bearing seat; a thrust plate fixed to the main bearing housing or formed integrally with the main bearing housing, the thrust plate comprising a body portion, the body portion being formed with a central through hole, a top surface of the body portion forming a thrust surface for the end plate, and the hub portion being at least partially located in the central through hole; as well as A cross slip ring, comprising: Ring body; A raised portion, the raised portion comprising: a first pair of protrusions opposite to each other, the first pair of protrusions being adapted to cooperate with the stationary member; and A second pair of protrusions opposite to each other, the second pair of protrusions and the first pair of protrusions are arranged alternately with each other, and the second pair of protrusions are suitable for cooperating with the movable scroll of the compression mechanism; It is characterized in that The ring body is provided with a sink groove, which is suitable for storing lubricating oil, and the lubricating oil stored in the sink groove is supplied to the thrust surface along with the reciprocating motion of the cross ring.

15. The scroll compressor according to claim 14, characterized in that: The end plate is provided with an oil passage and an oil extraction port, wherein the oil passage extends radially inward from the outer peripheral surface of the end plate, and the oil extraction port connects the oil passage with the interior of the hub, so that the lubricating oil in the hub flows out of the end plate through the oil extraction port and the oil passage; the trough is suitable for storing the lubricating oil flowing out of the oil passage.

16. The scroll compressor according to claim 15, characterized in that: The recessed groove is located radially inward of the protruding portion.

17. The scroll compressor according to claim 16, characterized in that: The sink groove is located radially inside the protrusion that protrudes axially upward from the ring body.

18. The scroll compressor according to claim 17, characterized in that: The first pair of protrusions protrude axially upward from the ring body, and the stationary component is the fixed scroll component; the sink groove is located radially inside the first pair of protrusions.

19. The scroll compressor according to claim 15, characterized in that The oil passage includes a first oil passage and a second oil passage, the oil extraction port includes a first oil extraction port and a second oil extraction port, the first oil extraction port connects the first oil passage with the interior of the hub, and the second oil extraction port connects the second oil passage with the interior of the hub; and in, The lubricating oil in the hub is supplied to the sink through the first oil extraction port, the first oil passage, the second oil extraction port, and the second oil passage.

20. The scroll compressor according to any one of claims 15 to 19, characterized in that The sinks include at least one pair of sinks facing each other.

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