A scroll compressor upper bracket and scroll compressor

Abstract

This utility model discloses an upper support for a scroll compressor and a scroll compressor. The scroll compressor is provided with a one-way circulating oil circuit, which includes an oil supply channel and a return channel. The upper support for the scroll compressor includes an upper support body, an oil circuit collecting space, a moving plate support surface, and a return oil circuit. A lubricating oil circuit is provided on the moving plate support surface. The oil supply channel, the oil circuit collecting space, the lubricating oil circuit, the return oil circuit, and the return channel are sequentially connected. This utility model, by providing a lubricating oil circuit on the moving plate support surface and treating it as part of the entire one-way circulating oil circuit, forces the lubricating oil to flow through the lubricating oil circuit to complete the circulation, thus achieving forced oil supply to the moving plate support surface. This fundamentally solves the problem of lubricating oil being unable to enter the moving plate support surface to form an oil film under extreme operating conditions. Simultaneously, it improves the lubrication condition of the moving plate support surface and enhances the compressor's ability to withstand heavy loads under harsh operating conditions.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to an upper support for a scroll compressor and a scroll compressor. Background Technology

[0002] Scroll compressors, with their significant advantages of high efficiency, small size, light weight, and stable operation, are widely used in air conditioning, heat pumps, and other fields. These compressors mainly consist of a sealed casing, a stationary scroll, a moving scroll, a support frame, an eccentric crankshaft, an anti-rotation mechanism, and a motor. Both the moving and stationary scrolls have helical profiles and are installed eccentrically at 180°, creating multiple crescent-shaped spaces between them. During operation, the moving scroll rotates around the center of the stationary scroll, making a non-rotating translational motion with a certain eccentric radius. This causes the outer crescent-shaped spaces to continuously move towards the center, gradually pushing the refrigerant towards the central space. Its volume continuously decreases and its pressure continuously increases until it connects with the central exhaust port, at which point the high-pressure refrigerant is discharged from the pump body, thus completing the entire compression process.

[0003] In the internal structure of a scroll compressor, the support surface of the upper bracket supporting the moving scroll is a crucial friction mating surface. During compressor operation, all the axial gas force borne by the pump body is borne by this support surface; therefore, maintaining good lubrication of this support surface is essential for the stable operation of the compressor. However, under high load and high pressure differential conditions, the axial gas force borne by the upper bracket support surface increases significantly. Simultaneously, in situations with high suction temperature or low suction pressure, the viscosity of the refrigerant oil decreases, making it difficult for the refrigerant oil to enter the upper bracket support surface and form an effective lubricating film.

[0004] The aforementioned situation directly causes wear on the upper support surface or the back of the mating scroll plate. Continuous wear generates impurities, leading to various compressor malfunctions, such as wear on other parts, motor sparking, and in severe cases, even compressor burnout. This problem directly has two adverse effects: First, in existing technology, the lubricating oil film on the upper support surface is prone to failure under extreme operating conditions, causing other internal compressor malfunctions and resulting in a high after-sales failure rate. Second, due to the poor lubrication of the upper support surface under special operating conditions, the operating range of scroll compressors using the existing upper support structure is significantly limited. Utility Model Content

[0005] The purpose of this invention is to provide an upper support for a scroll compressor and a scroll compressor, aiming to solve problems such as poor lubrication of the support surface of the upper support for the compressor.

[0006] This utility model embodiment provides an upper bracket for a scroll compressor, applied to a scroll compressor. The scroll compressor is provided with a one-way circulating oil circuit, which includes an oil supply channel and a return oil channel. The upper bracket for the scroll compressor includes an upper bracket body, which is provided with an oil circuit collecting space, a moving plate support surface, and a return oil circuit. The moving plate support surface is provided with a lubricating oil circuit. The oil supply channel, the oil circuit collecting space, the lubricating oil circuit, the return oil circuit, and the return oil channel are sequentially connected.

[0007] Furthermore, the lubricating oil passage is arranged around the moving disc support surface.

[0008] Furthermore, the lubricating oil circuit is spirally arranged around the moving disc support surface.

[0009] Furthermore, the lubricating oil circuit is provided with an outlet and an inlet, the outlet being connected to the return oil circuit, and the inlet being connected to the oil circuit collection space.

[0010] Furthermore, the oil passage collection space is located at the center of the upper support body, and multiple inlets are provided, which are evenly distributed around the oil passage collection space.

[0011] Furthermore, the lubrication oil circuit is provided with multiple circuits, with one end of each circuit connected to the oil circuit collection space, and the other end of each circuit connected to the return oil circuit.

[0012] Furthermore, the return oil path is configured to pass through the upper support body.

[0013] Furthermore, the return oil circuit includes: a first return oil circuit and a second return oil circuit, wherein both ends of the first return oil circuit are respectively connected to one end of the second return oil circuit and the lubricating oil circuit, and the other end of the second return oil circuit is connected to the return oil channel.

[0014] The first return oil circuit is arranged vertically, and the second return oil circuit is arranged horizontally.

[0015] This utility model embodiment also provides a scroll compressor, including: the above-mentioned scroll compressor upper bracket.

[0016] Furthermore, it also includes: an oil storage tank and an oil supply mechanism, wherein the oil return channel is connected to the oil storage tank, and the oil supply mechanism is connected to the oil supply side channel to transport the lubricating oil in the oil storage tank to the oil supply side channel.

[0017] This utility model discloses an upper bracket for a scroll compressor and a scroll compressor. The upper bracket is applied to a scroll compressor, and the scroll compressor is provided with a one-way circulating oil circuit. The one-way circulating oil circuit has an oil supply side channel and an oil return channel. The upper bracket includes an upper bracket body, which has an oil circuit collecting space, a moving plate support surface, and a return oil circuit. The moving plate support surface has a lubricating oil circuit. The oil supply side channel, the oil circuit collecting space, the lubricating oil circuit, the return oil circuit, and the return oil channel are sequentially connected. This utility model, by setting a lubricating oil circuit on the moving plate support surface and connecting both ends of the lubricating oil circuit to the oil supply side channel and the return oil circuit, allows the lubricating oil circuit to function as a link in the entire one-way circulating oil circuit. This forces the lubricating oil to flow through the lubricating oil circuit to complete the circulation, achieving forced oil supply to the moving plate support surface. This fundamentally solves the problem that lubricating oil is difficult to enter the moving plate support surface to form an oil film under extreme operating conditions. At the same time, it improves the lubrication state of the moving plate support surface and enhances the compressor's ability to withstand heavy loads under harsh operating conditions. In addition, it has improved the service life and reliability of scroll compressors and broadened their operating range. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a cross-sectional schematic diagram of a scroll compressor;

[0020] Figure 2 A first-view structural schematic diagram of the upper support of a scroll compressor;

[0021] Figure 3 A second-view structural schematic diagram of the upper support of a scroll compressor;

[0022] Figure 4 This is a cross-sectional schematic diagram of the upper support of a scroll compressor;

[0023] Figure 5 This is a schematic diagram of the upper support structure of a scroll compressor with an irregularly shaped lubrication circuit.

[0024] Figure 6 A schematic diagram of the upper support structure of a scroll compressor with multiple lubrication lines;

[0025] Figure 7 This is a schematic diagram of the oil circulation system for the entire scroll compressor.

[0026] Figure 8 for Figure 7 A partial view of A in the middle;

[0027] Figure 9 for Figure 7 A partial view of B in the middle;

[0028] Explanation of the labels in the diagram:

[0029] 1. Upper bracket of scroll compressor; 2. Oil supply side channel; 3. Oil return channel; 4. Upper bracket body; 5. Oil passage collection space; 6. Moving plate support surface; 7. Oil return passage; 8. Lubricating oil passage; 9. Outlet; 10. Inlet; 11. First oil return passage; 12. Second oil return passage; 13. Compression mechanism; 14. Drive unit; 15. Upper cover of sealed container; 16. Sealed container shell; 17. Lower cover of sealed container; 18. Stationary scroll plate; 19. Moving scroll plate; 20. Cross slip ring; 21. Motor; 22. Crankshaft; 23. Exhaust pipe; 24. Oil reservoir; 25. Oil supply mechanism; 26. Crankshaft center oil hole; 27. Radial oil hole of auxiliary shaft; 28. Auxiliary bearing; 29. ​​Radial oil hole of main shaft; 30. Cut edge; 31. Main bearing. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be understood that, when used in this specification and the appended claims, the terms “comprising” and “including” indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0032] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0033] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0034] Please seeFigures 1-4 This embodiment provides an upper support 1 for a scroll compressor, which is applied to a scroll compressor. The scroll compressor is provided with a one-way circulating oil circuit, and the one-way circulating oil circuit is provided with an oil supply side channel 2 and an oil return channel 3. The upper support 1 for the scroll compressor includes: an upper support body 4, an oil circuit collecting space 5, a moving plate support surface 6 and an oil return channel 7 are provided on the upper support body 4, and a lubricating oil circuit 8 is provided on the moving plate support surface 6. The oil supply side channel 2, the oil circuit collecting space 5, the lubricating oil circuit 8, the oil return channel 7 and the oil return channel 3 are connected in sequence.

[0035] This embodiment provides a lubricating oil passage 8 on the moving plate support surface 6, connecting both ends of the lubricating oil passage 8 to the oil supply channel 2 and the oil return channel 3. This allows the lubricating oil passage 8 to function as a link in the entire unidirectional circulation oil circuit, ensuring that the lubricating oil must flow through the lubricating oil passage 8 to complete the circulation. This achieves forced oil supply to the moving plate support surface 6, fundamentally solving the problem of lubricating oil failing to enter the moving plate support surface 6 to form an oil film under extreme operating conditions. Simultaneously, it improves the lubrication condition of the moving plate support surface 6, enhancing the compressor's ability to withstand harsh operating conditions and heavy loads. Furthermore, it improves the service life and reliability of the scroll compressor, and broadens its operating range.

[0036] In this embodiment, the lubricating oil circuit 8 is arranged around the moving disc support surface 6.

[0037] The lubrication passage 8 provided on the moving plate support surface 6 has a groove structure and surrounds the moving plate support surface 6. This surrounding lubrication passage 8 can extend circumferentially along the moving plate support surface 6 to form a closed or open annular path to fully cover the main friction contact area on the moving plate support surface 6.

[0038] After the lubricating oil flows out of the oil collection space 5, it enters the surrounding lubricating oil passage 8, and then flows along the surrounding path on the moving plate support surface 6, thereby fully lubricating the entire friction area of ​​the moving plate support surface 6. The lubricating oil flowing through the surrounding path finally flows into the return oil passage 7, and then returns to the oil storage tank 24 through the return oil channel 3, completing the unidirectional series oil circulation.

[0039] The lubricating oil path 8 arranged around the moving plate support surface 6 can increase the contact area and contact time between the lubricating oil and the moving plate support surface 6 by taking advantage of the extension characteristics of the surrounding path. This ensures that under extreme working conditions such as high load and high pressure difference, the lubricating oil can evenly cover the key friction area of ​​the support surface, effectively solving the problem that the lubricating oil is difficult to fully enter the moving plate support surface 6 to form a stable oil film.

[0040] Furthermore, the lubricating oil circuit 8 is spirally arranged around the moving disc support surface 6.

[0041] The lubricating oil passage 8 is spirally arranged around the moving disk support surface 6. The spiral lubricating oil passage 8 extends continuously along the circumference of the moving disk support surface 6 and combines with a radial gradient. Its spiral path can gradually tighten from the outer periphery of the moving disk support surface 6 towards the central area, or gradually expand from the central area towards the outer periphery, forming a complete spiral coverage trajectory to adapt to the rotational translation trajectory of the moving scroll on the moving disk support surface 6, ensuring that the spiral path can cover the main friction contact area of ​​the moving disk support surface 6.

[0042] The spiral design significantly increases the path length of the lubricating oil as it flows through the spiral oil path, thereby improving the contact time and contact area of ​​the lubricating oil on the moving disc support surface 6, and thus enhancing the lubrication coverage effect.

[0043] In this embodiment, please refer to Figure 5 The lubrication passage 8 can also be designed in other groove forms, including radial grooves, grid grooves, square grooves or irregular grooves, to adapt to different lubrication needs and operating conditions.

[0044] The radial groove structure extends radially along the moving plate support surface 6, centered on the oil passage collection space 5. After entering through the oil passage collection space 5, the lubricating oil flows from the inside to the outside along the radial grooves, eventually converging into the return oil channel 3 through the corresponding return oil passage 7. This structure ensures that the lubricating oil quickly covers all areas of the support surface, making it particularly suitable for efficient lubrication under high axial gas force conditions.

[0045] The grid-like grooves consist of intersecting horizontal and vertical grooves, forming a grid-like distribution. After entering from the oil collection space 5, the lubricating oil covers multiple local areas of the support surface through the grid path, and finally flows back through the return oil passage 7. This structure optimizes the distribution density of the lubricating oil through multi-path flow, making it suitable for friction pairs requiring large-area lubrication.

[0046] Square grooves are arranged in a regular square or rectangular pattern, allowing lubricating oil to flow along a square path. Their regular structure facilitates machining and sealing.

[0047] Irregular grooves are designed in non-standard shapes (such as serrated or irregular paths) according to actual needs, and the flow path of lubricating oil can be flexibly adjusted to prolong contact time or enhance local lubrication effect.

[0048] In this embodiment, please refer to Figure 2 The lubricating oil circuit 8 is equipped with an outlet 9 and an inlet 10. The outlet 9 is connected to the return oil circuit 7, and the inlet 10 is connected to the oil circuit collection space 5.

[0049] The lubrication oil passage 8 is equipped with an inlet 10 and an outlet 9. The inlet 10 is directly connected to the oil passage collection space 5, which is used to collect lubricating oil delivered from the central oil hole and related radial oil holes of the crankshaft. The outlet 9 is connected to the return oil passage 7 inside the upper support body 4, and the return oil passage 7 is further connected to the return oil channel 3. When the lubricating oil is collected in the oil passage collection space 5, it flows into the lubrication oil passage 8 from the inlet 10, completes lubrication on the moving plate support surface 6, and then enters the return oil passage 7 from the outlet 9. Subsequently, it flows back to the oil storage tank 24 through the return oil channel 3, forming a complete one-way circulation oil passage.

[0050] The inlet 10 of the lubricating oil circuit 8 can be a single inlet 10 or multiple inlets 10.

[0051] In some embodiments, the oil passage collection space 5 is located at the center of the upper support body 4, and multiple inlets 10 are provided, with the multiple inlets 10 being evenly distributed around the oil passage collection space 5.

[0052] An oil passage collection space 5 is provided at the center of the upper support body 4 of the scroll compressor, serving as a centralized distribution area for lubricating oil. Multiple inlets 10 are evenly distributed around this oil passage collection space 5 along the radial direction of the moving plate support surface 6. Each inlet 10 is directly connected to the oil passage collection space 5. After entering through the inlet 10, the lubricating oil flows along the lubricating oil passage 8 on the moving plate support surface 6, and finally returns to the return oil channel 3 through the outlet 9.

[0053] Specifically, lubricating oil is evenly distributed to the lubrication passage 8 from multiple inlets 10. The uniform distribution of multiple inlets 10 ensures the uniformity of lubricating oil supply on the moving plate support surface 6, avoiding problems of insufficient or excessive local oil supply. For example, the inlets 10 can be arranged in a ring array or symmetrically distributed to cover the key friction areas of the moving plate support surface 6.

[0054] Through the above design, the oil collection space 5 is located at the center of the upper support body 4, and together with multiple evenly distributed inlets 10, it achieves efficient and stable distribution of lubricating oil. This structure not only optimizes the flow path of lubricating oil, but also improves the reliability of the lubrication system through multi-point oil supply, providing sufficient lubricating oil to the moving plate support surface 6, thereby adapting to the lubrication needs under high load or extreme working conditions.

[0055] In this embodiment, please refer to Figure 6 There are multiple lubricating oil passages 8. The same end of the multiple lubricating oil passages 8 is connected to the oil passage collection space 5, and the other end of the multiple lubricating oil passages 8 is connected to the return oil passage 7.

[0056] On the moving plate support surface 6, the lubricating oil passages 8 are designed as multiple independent oil passage structures. Specifically, the same end of the multiple lubricating oil passages 8 is connected to the oil passage collection space 5 through multiple inlets 10, or the same end of the multiple lubricating oil passages 8 is connected to the oil passage collection space 5 through a single inlet 10. The other end of each lubricating oil passage 8 is connected to the return oil channel 3 through an outlet 9. Lubricating oil enters the multiple lubricating oil passages 8 from the oil passage collection space 5 through each inlet 10, flows along its respective path, and then flows into the return oil channel 3 through the corresponding outlet 9.

[0057] The inlet 10 of each lubrication oil passage 8 is connected to the oil passage collection space 5, ensuring that the lubricating oil can be distributed synchronously and evenly to each oil passage. The outlet 9 is directly connected to the return oil channel 3, so that the lubricating oil can quickly return after completing the lubrication of the support surface, avoiding stagnation or local accumulation.

[0058] Through the above design, the parallel structure of multiple lubrication oil circuits 8 achieves multi-path supply and return of lubricating oil. The oil circuit collection space 5 serves as a centralized distribution point for lubricating oil, uniformly introducing lubricating oil into each oil circuit through multiple inlets 10. Each oil circuit has an independent outlet 9 connected to the return oil channel 3, ensuring the high efficiency and stability of lubricating oil circulation. This structure not only improves the coverage and flow rate of lubricating oil but also optimizes the reliability of the lubrication system through multi-path flow.

[0059] In this embodiment, the return oil line 7 is installed through the upper support body 4.

[0060] In the upper support body 4 of the scroll compressor, the return oil passage 7 is arranged vertically, forming a direct return oil route from the outlet 9 of the lubricating oil passage 8 on the driven disc support surface 6 to the oil storage tank 24 at the bottom of the compressor. Specifically, the upper end of the return oil passage 7 is connected to the outlet 9 of the lubricating oil passage 8, and the lower end is connected to the oil storage tank 24 through the return oil channel 3. After lubricating the driven disc support surface 6, the lubricating oil enters the return oil passage 7 through the outlet 9, flows downward along its path, and finally returns to the oil storage tank 24 through the return oil channel 3, forming a closed loop circulation.

[0061] The structure of the return oil passage 7, which runs through the upper support body 4, significantly improves the return efficiency of lubricating oil. Its straight path shortens the return distance of lubricating oil, reduces the risk of oil film rupture caused by flow obstruction, and ensures that lubricating oil can still return stably under extreme working conditions, maintaining continuous lubrication of the moving plate support surface 6.

[0062] In this embodiment, please refer to Figure 4 The return oil passage 7 includes: a first return oil passage 11 and a second return oil passage 12. The two ends of the first return oil passage 11 are respectively connected to one end of the second return oil passage 12 and the lubricating oil passage 8, and the other end of the second return oil passage 12 is connected to the return oil channel 3.

[0063] The first return oil line 11 is set vertically, and the second return oil line 12 is set horizontally.

[0064] Specifically, the first return oil passage 11 extends from the outlet 9 of the lubricating oil passage 8 to the bottom area of ​​the upper support body 4. Its vertical path passes between the outlet 9 of the moving plate support surface 6 and the second return oil passage 12, forming a vertical lubricating oil return channel.

[0065] The second return oil passage 12 extends laterally from the end of the first return oil passage 11, and its path is arranged along the horizontal direction of the upper support body 4, eventually connecting directly with the return oil channel 3. This lateral design ensures that after the lubricating oil completes its vertical return flow, it can be quickly guided laterally to the return oil channel 3.

[0066] In addition, the connection between the first return oil passage 11 and the second return oil passage 12 adopts a transition section design to reduce flow resistance; at the same time, the interface between the second return oil passage 12 and the return oil channel 3 is sealed by a sealing structure (such as welding or nested connection) to ensure no leakage of lubricating oil.

[0067] Through the above design, the vertically arranged first return oil passage 11 can use gravity to assist the lubricating oil to flow quickly from the outlet 9 of the lubricating oil passage 8 to the second return oil passage 12, reducing the oil retention near the moving plate support surface 6; the horizontally arranged second return oil passage 12 can withstand the impact of the lubricating oil, so that the lubricating oil can be smoothly guided to converge towards the return oil channel 3. The cooperation of the two paths can reduce the oil flow resistance, avoid local congestion, ensure smooth return oil, and maintain the high efficiency of unidirectional oil circulation.

[0068] In addition, the segmented design facilitates processing and manufacturing. The vertical and horizontal oil return paths 7 can be processed separately according to the structural characteristics of different areas of the upper bracket 1 of the scroll compressor, which reduces the processing difficulty of the complex overall path, facilitates the control of processing accuracy, and also facilitates later inspection and maintenance, indirectly improving the stability and durability of the lubrication system.

[0069] Please see Figure 1 This embodiment also provides a scroll compressor, including: the upper support 1 of the scroll compressor described in the above embodiment.

[0070] The scroll compressor houses a compression mechanism 13 and a drive unit 14 within a sealed container. The sealed container comprises a top cover 15, a shell 16, and a bottom cover 17. The compression mechanism 13 consists of a stationary scroll 18, a moving scroll 19, and a cross-shaped slip ring 20. The drive unit 14 mainly consists of a motor 21 and a crankshaft 22. During operation, the drive unit 14 drives the moving scroll 19 to mesh with the stationary scroll 18, forming a crescent-shaped compression chamber. As the crankshaft rotates, refrigerant enters the compression mechanism 13. The moving scroll 19 continues to rotate and maintains good engagement, pushing the suction chamber towards the center, reducing its volume, and increasing the pressure within the chamber. When the compression reaches a predetermined compression ratio, the refrigerant is discharged from the central exhaust port of the stationary scroll 18, enters the space of the top cover 15, and then exits the compressor through the exhaust pipe 23, entering the air conditioning system to complete the cooling / heating cycle.

[0071] In this embodiment, it also includes: an oil storage tank 24 and an oil supply mechanism 25. The oil return channel 3 is connected to the oil storage tank 24, and the oil supply mechanism 25 is connected to the oil supply side channel 2 to transport the lubricating oil in the oil storage tank 24 to the oil supply side channel 2. The oil supply side channel 2 includes all oil supply channels from the output end of the oil supply mechanism 25 to the oil passage collection space 5, such as the crankshaft center oil hole 26 (e.g.,...). Figure 7 (as shown in the image) etc.

[0072] The lubricating oil supply system of the scroll compressor includes an oil reservoir 24 and an oil supply mechanism 25. The oil reservoir 24 is located at the bottom of the compressor, and the oil supply mechanism 25 is an oil pump or a centrifugal oil supply device. Its suction end extends to the bottom of the oil reservoir 24, and its pressure end is connected to the oil supply side channel 2. After the lubricating oil is drawn from the oil reservoir 24 by the oil supply mechanism 25, it is transported to the oil passage collection space 5 through the oil supply side channel 2.

[0073] Specifically, the end of the oil return channel 3 is directly connected to the oil storage tank 24. After the lubricating oil completes the lubrication of the moving plate support surface 6, it quickly flows back to the oil storage tank 24 through the oil return channel 3, realizing the continuous circulation supply of lubricating oil.

[0074] The connection between the oil supply mechanism 25 and the oil supply channel 2 ensures that lubricating oil can be stably and efficiently transported from the oil reservoir 24 to the oil collection space 5. Meanwhile, the direct connection between the return channel 3 and the oil reservoir 24 prevents lubricating oil stagnation or flow obstruction, improving the system's circulation efficiency. This design, through the synergistic effect of the oil supply mechanism 25 and the return channel 3, achieves unidirectional flow and high-flow-rate supply of lubricating oil, effectively ensuring the lubrication reliability of the moving plate support surface 6 under extreme operating conditions.

[0075] Please see Figures 1-9The overall oil circuit implementation process is as follows: Lubricating oil is stored in the oil reservoir 24 at the bottom of the compressor. The lubricating oil is delivered to the crankshaft center oil hole 26 via the oil supply mechanism 25 (oil pump or other oil supply device), supplying oil from the bottom of the compressor to the top. The lubricating oil first passes through the auxiliary shaft radial oil hole 27 at the crankshaft auxiliary journal to provide lubricating oil to the auxiliary bearing 28. Then, it passes through the main shaft radial oil hole 29 of the crankshaft main journal and the crankshaft main journal chamfer 30 to provide lubricating oil to the main bearing 31. Since the main bearing and crankshaft have a small clearance fit, the leakage of lubricating oil is minimal, so most of the lubricating oil will collect in the oil circuit collection space 5. Additionally, the lubricating oil flowing out of the center oil hole through the eccentric head passes through the moving plate bearing and the eccentric sleeve before collecting in the oil circuit collection space 5. Thus, the lubricating oil drawn from the lower cover by the oil supply device gathers in the oil passage collection space 5. Since the moving plate is pressed against the moving plate support surface 6, the oil passage collection space 5 is relatively sealed. The lubricating oil inside enters the lubricating oil passage 8 from the inlet 10 and flows out from the outlet 9. In this way, the whole machine forms a complete unidirectional flow oil supply system, which has the characteristics of efficient and stable oil supply and large lubricating oil volume, thereby fully ensuring the lubrication effect of the moving plate support.

[0076] In summary, the oil circulation process is as follows: oil storage tank 24 → oil supply mechanism 25 → shaft oil circuit → oil circuit collection space 5 → lubrication oil circuit 8 → return oil circuit 7 → return oil channel 3 → oil storage tank 24.

[0077] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

[0078] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusivity.

[0079] The term "comprises" implies that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A support bracket for a scroll compressor, applied to a scroll compressor, wherein the scroll compressor is provided with a one-way circulating oil circuit, and the one-way circulating oil circuit is provided with an oil supply side channel and an oil return side channel, characterized in that, The scroll compressor upper support includes: an upper support body, on which an oil passage collection space, a moving plate support surface, and a return oil passage are provided; a lubricating oil passage is provided on the moving plate support surface; and the oil supply side passage, the oil passage collection space, the lubricating oil passage, the return oil passage, and the return oil channel are sequentially connected.

2. The upper support of the scroll compressor according to claim 1, characterized in that, The lubrication oil passage is arranged around the moving disc support surface.

3. The upper support of the scroll compressor according to claim 2, characterized in that, The lubricating oil circuit is spirally arranged around the moving disc support surface.

4. The upper support of the scroll compressor according to claim 1, characterized in that, The lubricating oil circuit is provided with an outlet and an inlet. The outlet is connected to the return oil circuit, and the inlet is connected to the oil circuit collection space.

5. The upper support of the scroll compressor according to claim 4, characterized in that, The oil passage collection space is located at the center of the upper support body, and multiple inlets are provided, which are evenly distributed around the oil passage collection space.

6. The upper support of the scroll compressor according to claim 1, characterized in that, The lubrication oil circuit is provided with multiple circuits, with one end of each circuit connected to the oil circuit collection space, and the other end of each circuit connected to the return oil circuit.

7. The upper support of the scroll compressor according to claim 1, characterized in that, The return oil passage runs through the upper support body.

8. The upper support of the scroll compressor according to claim 1, characterized in that, The return oil circuit includes a first return oil circuit and a second return oil circuit. The two ends of the first return oil circuit are respectively connected to one end of the second return oil circuit and the lubricating oil circuit. The other end of the second return oil circuit is connected to the return oil channel. The first return oil circuit is arranged vertically, and the second return oil circuit is arranged horizontally.

9. A scroll compressor, characterized in that, include: The upper bracket of the scroll compressor as described in any one of claims 1-8.

10. The scroll compressor according to claim 9, characterized in that, Also includes: The oil storage tank and the oil supply mechanism are provided. The return oil channel is connected to the oil storage tank, and the oil supply mechanism is connected to the oil supply side channel to deliver the lubricating oil in the oil storage tank to the oil supply side channel.

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