Scroll compressor with self-adjusting oil supply structure

Abstract

The utility model relates to the technical field of compressors, in particular to a scroll compressor with a self-adjusting oil supply structure, which comprises an oil duct structure, and the oil duct structure comprises a fixed scroll oil duct, a movable scroll oil duct, a crankshaft oil duct and an oil pool which are sequentially communicated from top to bottom; wherein the movable scroll oil duct is arranged on the movable scroll component, a self-adjusting oil supply structure is arranged in the movable scroll oil duct, and the self-adjusting oil supply structure can realize self-adjustment of oil supply in the movable scroll component. The lubricating oil supply can be automatically adjusted according to the actual rotating speed of the compressor, and the efficiency and performance of the compressor are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, and particularly to a scroll compressor with a self-regulating oil supply structure. Background Art

[0002] Scroll compressors have been widely used in the fields of air conditioners and heat pump systems due to their excellent energy efficiency, compact size, and stable operating performance. Its key components, the moving scroll member and the fixed scroll member, achieve lubrication and sealing functions through a precise oil supply system to ensure the smooth operation of the compressor. Traditionally, the oil supply system of a scroll compressor consists of an oil sump, an oil pump, a crankshaft oil passage, a moving scroll oil passage, and a fixed scroll oil passage, forming a closed cycle to achieve efficient transmission and distribution of oil.

[0003] The moving scroll oil passage is usually designed as a passage connecting the high-pressure side and the low-pressure side to evenly supply lubricating oil to the moving scroll member and the fixed scroll member. In this design, the regulation of the oil flow rate is jointly affected by the pressure difference between the high-pressure side and the low-pressure side and the space of the throttling oil passage, and is usually achieved through a throttling structure. Such a configuration aims to ensure uniform and efficient flow of oil under various operating conditions.

[0004] Under the APF operating condition, especially in the medium and low-speed operating state, the performance optimization of scroll compressors has become a key factor in enhancing market competitiveness.

[0005] Within the framework of traditional designs, although the oil supply requirements under different operating conditions have been considered, for the application of variable-speed compressors (such as variable-frequency compressors), there are still challenges in oil supply adaptability:

[0006] Insufficient oil supply adaptability: Under fixed design conditions, the design of the moving scroll oil passage often focuses on meeting the requirements of the highest speed operating condition. However, in actual operation, especially in the low-speed operating condition, the moving scroll oil passage still maintains a high oil supply volume. This will not only lead to a decrease in the overall volumetric efficiency of the compressor, increase unnecessary compression power consumption, but also may cause an increase in the additional oil circulation rate, further weakening the overall performance of the scroll compressor.

[0007] The current technical state fails to fully optimize the oil supply efficiency under low-speed operating conditions, resulting in the performance of the scroll compressor not reaching the optimal state under specific operating conditions, constituting a technical challenge that urgently needs to be solved. When deeply analyzing this problem, attention should be focused on exploring how to flexibly adjust the oil supply strategy while ensuring the performance under high-speed operating conditions to adapt to the low-speed operating environment, thereby effectively improving the energy efficiency and performance of the compressor to meet the increasingly strict standards and market expectations. Summary of the Utility Model

[0008] The purpose of the present utility model is to provide a scroll compressor with a self-adjusting oil supply structure, which can automatically adjust the lubricating oil supply according to the actual rotational speed of the compressor to solve the above problems and improve the efficiency and performance of the compressor.

[0009] The technical solution of the present utility model is realized as follows:

[0010] A scroll compressor with a self-adjusting oil supply structure includes a compression mechanism, a support mechanism and an oil passage structure. The support mechanism supports the compression mechanism. The compression mechanism includes a moving scroll member and a fixed scroll member. The space between the support mechanism and the moving scroll member forms a high-pressure side, and the space between the fixed scroll member and the trailing scroll blades of the moving scroll member forms a low-pressure side;

[0011] The oil passage structure includes a fixed scroll oil passage, a moving scroll oil passage, a crankshaft oil passage and an oil sump that are connected in sequence from top to bottom;

[0012] Among them, the moving scroll oil passage is arranged on the moving scroll member, and a self-adjusting oil supply structure is arranged in the moving scroll oil passage, and the self-adjusting oil supply structure can realize the self-adjustment of the oil supply inside the moving scroll member.

[0013] Further, the moving scroll oil passage includes a rod passage arranged horizontally, an oil inlet hole and an oil outlet hole;

[0014] Among them, the rod passage includes a thick-diameter rod passage and a thin-diameter rod passage that are connected;

[0015] An oil inlet hole for communicating with the crankshaft oil passage is opened below the thin-diameter rod passage, and an oil outlet hole for communicating with the fixed scroll oil passage is opened above the thick-diameter rod passage.

[0016] Further, an installation port connected to the thick-diameter rod passage is opened on the side of the moving scroll member, and a detachable plug is arranged in the installation port.

[0017] Further, the axis of the thick-diameter rod passage and the axis of the thin-diameter rod passage are collinearly arranged.

[0018] Further, the self-adjusting oil supply structure includes a throttle rod and a first elastic element. The throttle rod is arranged in the thin-diameter rod passage, and there is a gap between the throttle rod and the thin-diameter rod passage. The gap is a throttle oil passage. A first elastic element is arranged in the thick-diameter rod passage. One end of the first elastic element is connected to the throttle rod, and the other end is connected to the plug.

[0019] Further, the first elastic element adopts a spring. One end of the spring abuts against the throttle rod, and the other end abuts against the plug.

[0020] Further, both ends of the thin-diameter rod passage are an open end and a closed end respectively;

[0021] When the length of the throttle rod is greater than the length of the thin-diameter rod passage, one end of the throttle rod abuts against the first elastic element, and the other end abuts against or is close to the closed end;

[0022] When the length of the throttle rod is less than the length of the thin-diameter rod passage, a second elastic element is arranged between one end of the throttle rod abutting against the first elastic element and the closed end, and the total length of the second elastic element and the throttle rod is greater than the length of the thin-diameter rod passage.

[0023] Further, the throttle rod is of a round rod structure or a conical structure. When the throttle rod is of a conical structure, the dimension of the throttle rod near the first elastic element is larger than the dimension of the end far from the first elastic element.

[0024] Further, the diameter of the oil inlet hole is greater than the diameter of the oil outlet hole. The diameter of the thick-diameter rod passage is D1, and the diameter of the thin-diameter rod passage is D2, satisfying: D1 - D2 ≥ 1.5 mm.

[0025] Further, the length of the throttle rod is D3, satisfying: 15 mm < D3 < 60 mm.

[0026] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0027] The moving scroll oil passage serves as a passage connecting the high-pressure side and the low-pressure side to supply lubricating oil to the moving scroll component and the fixed scroll component in a balanced manner. And in this application, by arranging a self-adjusting oil supply structure in the moving scroll oil passage, the lubricating oil supply amount can be automatically adjusted according to the actual rotation speed of the compressor, improving the efficiency and performance of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 It is a schematic structural diagram of the scroll compressor of the present utility model;

[0030] Figure 2 It is a schematic structural diagram of the moving scroll oil passage of the present utility model;

[0031] Figure 3Structural schematic diagram of the self - adjusting structure of the present utility model adopting the first solution;

[0032] Figure 4 Structural schematic diagram of the self - adjusting structure of the present utility model adopting the second solution.

[0033] In the figure:

[0034] 10 - Scroll compressor; 20 - Sealed housing; 21 - Suction port; 22 - Discharge port; 30 - Lubricating oil;

[0035] 51 - Stator; 52 - Rotor;

[0036] 60 - Driving shaft; 61 - Crankshaft oil passage; 70 - Fixed scroll member; 71 - Fixed scroll oil passage;

[0037] 80 - Moving scroll member; 81 - Moving scroll oil passage; 811 - Oil inlet hole; 812 - Rod passage; 812a - Thin - diameter rod passage; 812b - Thick - diameter rod passage; 813 - Oil outlet hole; 82 - Plug; 83 - Throttle rod; 84 - First elastic element; 85 - Second elastic element;

[0038] 100 - Oil pump; 111 - Frame body; 112 - Support plate;

[0039] 120 - High - pressure side; 130 - Low - pressure side. Specific embodiments

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0042] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0043] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is customarily placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0044] In addition, the terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0045] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0046] The following will describe in detail some embodiments of the present utility model with reference to the drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0047] Embodiment

[0048] Limitations of the prior art:

[0049] In a variable-frequency compressor, since the supply amount of lubricating oil is almost constant, this results in excessive oil supply during low-speed operation, thereby reducing the overall efficiency and performance of the compressor. Specifically:

[0050] - Decrease in efficiency: The excess lubricating oil at low speed increases the power consumption of the compressor and reduces the volumetric efficiency.

[0051] - Influence on performance: The high oil circulation rate affects the performance of the compressor, especially under medium and low speed conditions.

[0052] In view of the problems existing in the prior art, the present application proposes a scroll compressor 10 with a self-regulating oil supply structure, referring to Figures 1-4, the scroll compressor 10 includes a hermetic housing 20, which is provided with a suction port 21 and a discharge port 22, and lubricating oil 30 is stored at the bottom of the hermetic housing 20; a motor composed of a stator 51 and a rotor 52 is provided in the middle of the hermetic housing 20, and this motor is a variable-speed motor;

[0053] The rotor 52 is provided with a drive shaft 60 to drive a compression mechanism composed of a fixed scroll member 70 and a moving scroll member 80, and an oil pump 100 is installed at the bottom of the drive shaft 60; both the fixed scroll member 70 and the moving scroll member 80 include spiral scroll blades;

[0054] The compression mechanism is supported by a support mechanism, and the support mechanism is composed of a frame body 111 and a support plate 112 combined;

[0055] The space between the support mechanism and the moving scroll member 80 forms a high-pressure side 120; the space between the trailing scroll blades of the fixed scroll member 70 and the moving scroll member 80 forms a low-pressure side 130.

[0056] The scroll compressor 10 also has an oil passage structure, and the oil passage structure includes a fixed scroll oil passage 71, a moving scroll oil passage 81, a crankshaft oil passage 61 and an oil sump that are connected in sequence from top to bottom;

[0057] Among them, the moving scroll oil passage 81 is arranged in the moving scroll member 80, and a self-regulating oil supply structure is arranged in the moving scroll oil passage 81, and the self-regulating oil supply structure can realize the self-regulation of the internal oil supply of the moving scroll member 80.

[0058] Specifically, as Figure 2 , the moving scroll oil passage 81 includes a horizontally arranged rod passage 812, an oil inlet hole 811 and an oil outlet hole 813;

[0059] Among them, the rod passage 812 includes a thick-diameter rod passage 812b and a thin-diameter rod passage 812a that are connected;

[0060] An oil inlet hole 811 for connecting the crankshaft oil passage 61 is opened below the thin-diameter rod passage 812a, and an oil outlet hole 813 for connecting the fixed scroll oil passage 71 is opened above the thick-diameter rod passage 812b.

[0061] An installation port connected to the thick-diameter rod passage 812b is opened on the side of the moving scroll member 80, and a detachable plug 82 is arranged in the installation port. The self-regulating oil supply structure can be installed from the installation port, and the installation port is sealed by the plug 82.

[0062] Preferably, the axis of the thick-diameter rod passage 812b is collinear with the axis of the thin-diameter rod passage 812a, that is, the thick-diameter rod passage 812b and the thin-diameter rod passage 812a are coaxial.

[0063] Specifically, the self-adjusting oil supply structure includes a throttle rod 83 and a first elastic element 84. The throttle rod 83 is disposed within the narrow-diameter rod passage 812a, and there is a gap between the throttle rod 83 and the narrow-diameter rod passage 812a. This gap serves as the throttle oil passage for the circulation of the lubricating oil 30. The first elastic element 84 is disposed within the wide-diameter rod passage 812b. One end of the first elastic element 84 is connected to the throttle rod 83, and the other end is connected to the plug 82.

[0064] Preferably, the first elastic element 84 is a single spring. One end of the spring abuts against the throttle rod 83, and the other end abuts against the plug 82. The first elastic element 84 can also be composed of at least two springs combined together.

[0065] Both ends of the narrow-diameter rod passage 812a are an open end and a closed end respectively. The end close to the wide-diameter rod passage 812b is the open end. There are two design schemes for the self-adjusting oil supply structure as follows:

[0066] The first one (as shown in Figure 3 ): When the length of the throttle rod 83 is greater than the length of the narrow-diameter rod passage 812a, one end of the throttle rod 83 abuts against the first elastic element 84, and the other end abuts against or is close to the closed end with a gap left. In this scheme, only an elastic element is disposed within the wide-diameter rod passage 812b.

[0067] The second one (as shown in Figure 4 ): When the length of the throttle rod 83 is less than the length of the narrow-diameter rod passage 812a, a second elastic element 85 is disposed between one end of the throttle rod 83 that abuts against the first elastic element 84 and the closed end, and the total length of the second elastic element 85 and the throttle rod 83 is greater than the length of the narrow-diameter rod passage 812a. In this scheme, elastic elements need to be disposed at both ends of the throttle rod 83, that is, the first elastic element 84 and the second elastic element 85 are disposed simultaneously. The second elastic element 85 can also be a spring.

[0068] The throttle rod 83 has a round rod structure or a conical structure. Preferably, the throttle rod 83 is designed as a conical structure. One end of the throttle rod 83 has a smaller size, and the other end has a larger size. This cylindrical structure design of the throttle rod 83 can expand the gap between the throttle rod 83 and the rod passage 812, enlarge the size of the throttle oil passage, and facilitate the circulation of the lubricating oil 30. When the throttle rod 83 is a conical structure, preferably, it is designed such that the size of the end of the throttle rod 83 close to the first elastic element 84 is larger than the size of the end far from the first elastic element 84. The size of the throttle oil passage gradually becomes thinner and narrower from the side of the oil inlet hole 811 to the side of the oil outlet hole 813. Then, when the lubricating oil 30 circulates within the throttle oil passage, it becomes increasingly narrow.

[0069] In this embodiment, the diameter of the oil inlet hole 811 is larger than that of the oil outlet hole 813. The diameter of the thick-diameter rod passage 812b is D1, the diameter of the thin-diameter rod passage 812a is D2, and the length of the throttle rod 83 is D3, satisfying: D1 - D2 ≥ 1.5 mm, 15 mm < D3 < 60 mm.

[0070] When the scroll compressor 10 operates, the lubricating oil 30 stored at the bottom of the sealed housing 20 is delivered to the crankshaft oil passage 61 under the action of the oil pump 100, and then sent to the high-pressure side 120 formed between the support mechanism and the moving scroll member 80 under the action of centrifugal force. When the lubricating oil 30 flows into the space of the high-pressure side 120, the lubricating oil 30 and the lubricating oil mist, under the action of the pressure difference between the high and low pressures, are delivered to the low-pressure side 130 formed by the tail scroll blades of the fixed scroll member 70 and the moving scroll member 80 through the throttle oil passage and the fixed scroll oil passage 71. Subsequently, these lubricating oil 30 and the lubricating oil mist are sucked into the compression chambers of the fixed scroll member 70 and the moving scroll member 80 together with the working fluid to achieve lubrication, sealing, and cooling inside these scroll members.

[0071] Among them, when the moving scroll member 80 rotates in a plane around the center of the base circle of the fixed scroll member 70, the throttle rod 83 will generate a centrifugal force to compress the second elastic element 85 on the right side and move to the right side (towards the side of the plug). When the throttle rod 83 moves to the right side, the throttle oil passage distance between the throttle rod 83 and the rod passage 812 will decrease. Under the same pressure difference, the flow rate of the lubricating oil 30 and the lubricating oil mist will increase.

[0072] When the rotational speed is higher, the centrifugal force of the throttle rod 83 is greater, the compression amount of the second elastic element 85 is greater, the throttle oil passage distance between the throttle rod 83 and the rod passage 812 is smaller, and under the same pressure difference, the flow rate of the lubricating oil 30 and the lubricating oil mist is greater, thereby realizing the self-regulation of the internal oil supply between the fixed and moving scroll members 70.

[0073] Compared with the prior art:

[0074] 1. When the scroll compressor 10 is at a low rotational speed, the centrifugal force of the throttle rod 83 is small, the compression force on the first elastic element 84 in the direction of the oil outlet hole 813 is small, and the moving distance of the throttle rod 83 in the direction of the oil outlet hole 813 is small: the throttle oil passage distance is long, the amount of lubricating oil flowing through the throttle oil passage to supply between the scrolls is small, the volumetric efficiency of the compressor is high, the power consumption is reduced, and at the same time, the oil circulation rate of the compressor is also reduced, improving the performance of the scroll compressor 10.

[0075] 2. When the rotational speed of the scroll compressor 10 increases, the centrifugal force of the throttle rod 83 increases, and the compressive force on the first elastic element 84 in the direction of the oil outlet hole 813 is large. The throttle rod 83 moves a large distance in the direction of the oil outlet hole 813: the distance of the throttle oil passage decreases, and the amount of lubricating oil flowing through the throttle oil passage increases, meeting the lubricating oil quantity requirement at high rotational speeds of the compressor, ensuring that the performance of the compressor is not affected by the change in oil quantity when the rotational speed of the compressor increases, and ensuring that the compressor always operates in a high-performance state.

[0076] In summary, the working principle of the self-regulating oil supply structure of this application is as follows:

[0077] - At low speeds, affected by the relatively small centrifugal force, the distance between the throttle rod 83 and the oil outlet hole 813 is large, so the amount of lubricating oil flowing through the throttle oil passage decreases.

[0078] - As the rotational speed increases, the throttle rod 83 is pushed by a greater centrifugal force, causing it to approach the oil outlet hole 813, shortening the distance of the throttle passage, and the flow rate of the lubricating oil 30 increases accordingly.

[0079] Key technical points:

[0080] 1. Structure of the moving scroll oil passage 81: The moving scroll oil passage 81 is composed of an oil inlet hole 811 with different diameters, a thin-diameter rod passage 812a, a thick-diameter rod passage 812b, and an oil outlet hole 813.

[0081] 2. Design of the throttle rod 83: The throttle rod 83 can move under the action of centrifugal force, changing the distance from the oil outlet hole 813, thereby adjusting the flow rate of the lubricating oil 30.

[0082] 3. Elastic element configuration: The movement range of the throttle rod 83 is controlled by elastic elements such as springs to ensure a stable adjustment effect.

[0083] The beneficial effects of the technical solution of this utility model are:

[0084] This application aims to automatically adjust the supply amount of the lubricating oil 30 according to the actual rotational speed of the compressor through a new self-regulating oil supply structure to solve the problems in the prior art, maintain the optimal supply amount of the lubricating oil 30 at various rotational speeds, and thus improve the efficiency and performance of the compressor.

[0085] Dynamic adjustment mechanism: The relative movement between the throttle rod 83 and the rod passage 812 is used to automatically adjust the size of the throttle oil passage.

[0086] Adaptive performance: As the rotational speed of the compressor changes, the position of the throttle rod 83 is changed by the centrifugal force, thereby adjusting the flow rate of the lubricating oil 30.

[0087] Efficiency improvement: By precisely controlling the flow rate of the lubricating oil 30, a high compressor efficiency can be maintained whether at high speed or low speed.

[0088] Performance optimization: effectively avoids efficiency losses caused by excessive oil volume, and at the same time ensures high-performance performance of the compressor at different speeds.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

[0090] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A scroll compressor (10) with a self-regulating oil supply structure, comprising a compression mechanism, a support mechanism and an oil passage structure. The support mechanism supports the compression mechanism. The compression mechanism includes a moving scroll member (80) and a fixed scroll member (70). The space between the support mechanism and the moving scroll member (80) forms a high-pressure side (120), and the space between the fixed scroll member (70) and the trailing scroll blades of the moving scroll member (80) forms a low-pressure side (130); characterized in that, The oil passage structure includes a fixed scroll oil passage (71), a moving scroll oil passage (81), a crankshaft oil passage (61) and an oil sump that are connected in sequence from top to bottom; Wherein, the moving scroll oil passage (81) is arranged in the moving scroll member (80), and a self-regulating oil supply structure is arranged in the moving scroll oil passage (81), and the self-regulating oil supply structure can realize the self-regulation of the internal oil supply of the moving scroll member (80).

2. The scroll compressor (10) with a self-regulating oil supply structure according to claim 1, characterized in that, The moving scroll oil passage (81) includes a horizontally arranged rod passage (812), an oil inlet hole (811) and an oil outlet hole (813); Wherein, the rod passage (812) includes a thick-diameter rod passage (812b) and a thin-diameter rod passage (812a) that are connected; An oil inlet hole (811) for connecting the crankshaft oil passage (61) is opened below the thin-diameter rod passage (812a), and an oil outlet hole (813) for connecting the fixed scroll oil passage (71) is opened above the thick-diameter rod passage (812b).

3. The scroll compressor (10) with a self-adjusting oil supply structure according to claim 2, characterized in that, An installation opening connected to the thick-diameter rod passage (812b) is opened on the side of the moving scroll member (80), and a detachable plug (82) is arranged in the installation opening.

4. The scroll compressor (10) with a self-regulating oil supply structure according to claim 3, wherein, The axis of the thick-diameter rod passage (812b) is collinear with the axis of the thin-diameter rod passage (812a).

5. The scroll compressor (10) with a self-adjusting oil supply structure according to claim 3, characterized in that, The self-regulating oil supply structure includes a throttle rod (83) and a first elastic element (84). The throttle rod (83) is arranged in the thin-diameter rod passage (812a), and there is a gap between the throttle rod (83) and the thin-diameter rod passage (812a). The gap is a throttle oil passage. A first elastic element (84) is arranged in the thick-diameter rod passage (812b). One end of the first elastic element (84) is connected to the throttle rod (83), and the other end is connected to the plug (82).

6. The scroll compressor (10) with a self-regulating oil supply structure according to claim 5, characterized in that, The first elastic element (84) is a spring. One end of the spring abuts against the throttle rod (83), and the other end abuts against the plug (82).

7. The scroll compressor (10) with a self-adjusting oil supply structure according to claim 5, characterized in that, The two ends of the thin-diameter rod passage (812a) are respectively an open end and a closed end; When the length of the throttle rod (83) is greater than the length of the thin-diameter rod passage (812a), one end of the throttle rod (83) abuts against the first elastic element (84), and the other end abuts against or is close to the closed end; When the length of the throttle rod (83) is less than the length of the thin-diameter rod passage (812a), a second elastic element (85) is provided between one end of the throttle rod (83) in contact with the first elastic element (84) and the closed end, and the total length of the second elastic element (85) and the throttle rod (83) is greater than the length of the thin-diameter rod passage (812a).

8. The scroll compressor (10) with a self-adjusting oil supply structure according to claim 5, characterized in that, The throttle rod (83) has a circular rod structure or a conical structure. When the throttle rod (83) has a conical structure, the size of the end of the throttle rod (83) near the first elastic element (84) is larger than the size of the end far from the first elastic element (84).

9. The scroll compressor (10) with a self-regulating oil supply structure according to claim 2, wherein, The diameter of the oil inlet hole (811) is larger than the diameter of the oil outlet hole (813). The diameter of the thick-diameter rod passage (812b) is D1, and the diameter of the thin-diameter rod passage (812a) is D2, satisfying: D1 - D2 ≥ 1.5 mm.

10. The scroll compressor (10) with a self-adjusting fuel supply structure according to claim 5, characterized in that, The length of the throttle rod (83) is D3, satisfying: 15 mm < D3 < 60 mm.

Images