Oil storage structure and compressor

Abstract

The invention provides an oil storage structure and a compressor, the oil storage structure comprises a counter weight directly or indirectly installed on a crankshaft, at least one of the counter weight and the crankshaft is provided with or connected with the oil storage structure, and the oil storage structure is constructed to store certain lubricating oil, so that the compressor can be started at the initial stage, and the oil storage structure can be used for storing the lubricating oil. And along with the rotation of the counter weight, the lubricating oil in the oil storage structure can be splashed to a movable scroll end plate or a thrust surface of the compressor. Various oil storage structure schemes are provided, lubricating oil can be supplied immediately after the compressor is started through the schemes, the time from starting of the compressor to lubricating of the thrust surface can be effectively shortened, and therefore the abrasion condition caused in the period can be avoided.

Description

Technical Field

[0001] The invention relates to refrigeration equipment, in particular to an oil storage structure and a compressor. Background Art

[0002] Scroll compressors are widely used in refrigeration, air conditioning, heat pumps and other fields due to their high efficiency, small size, light weight and smooth operation.

[0003] In a vertical scroll compressor, the movable scroll of the scroll compressor is directly placed on a fixed frame in the axial direction and supported by the thrust surface of the frame. In this way, during the operation of the scroll compressor, the thrust surface between the frame and the movable scroll will form relative friction. When the lubricating oil cannot be continuously or timely supplied to the friction pair, the thrust surface may be worn, especially when the compressor is just started, there will be a delay in the supply of lubricating oil to the thrust surface. When the thrust surface is severely worn, the performance of the scroll compressor will be reduced, or even the compressor will fail.

[0004] In the current compressor lubrication and lubricating oil supply system, there are already a variety of solutions for supplying lubricating oil to the thrust surface, but these solutions have different problems:

[0005] 1. From the time the compressor starts to supply lubricating oil to the thrust surface, the lubricating oil needs to wait until the lubricating oil level in the lubricating oil pool reaches a certain height before it can work. There will be a long delay, during which the thrust surface lacks lubricating oil and has a greater risk of wear.

[0006] 2. The lifting capacity of the oil pump is weak, the time from starting to supplying lubricating oil to the direct thrust bearing is long, or the oil supply is insufficient.

[0007] 3. In order to balance the oil supply requirements of high and low frequencies, the oil pump supply of the variable frequency compressor is designed to be low during low-frequency startup, and the time for the lubricating oil to reach the thrust bearing is too long. Summary of the invention

[0008] The object of the present invention is to provide an oil storage structure to solve the problems raised in the above background technology.

[0009] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is an oil storage structure, including a counterweight directly or indirectly installed on the crankshaft, at least one of the counterweight and the crankshaft is provided with or connected to the oil storage structure, and the oil storage structure is constructed to store a certain amount of lubricating oil, so that at the initial start-up of the compressor, as the counterweight rotates, the lubricating oil in the oil storage structure can splash onto the movable scroll end plate or thrust surface of the compressor.

[0010] Furthermore, a sliding block is installed on the crankshaft, and an oil storage structure is provided on or connected to the sliding block.

[0011] The present invention also provides an oil storage structure, including a counterweight directly or indirectly installed on a crankshaft, a slider installed on the crankshaft, and an oil storage structure provided on or connected to the slider. The oil storage structure is constructed to store a certain amount of lubricating oil, so that at the initial start-up of the compressor, as the counterweight rotates, the lubricating oil in the oil storage structure can splash onto the movable scroll end plate or thrust surface of the compressor.

[0012] Based on the above two oil storage structure solutions, the present invention also provides the following technical solutions:

[0013] Furthermore, the oil storage structure is a pit-shaped structure.

[0014] Furthermore, the pit-shaped structure is formed by counterweight casting, or powder metallurgy, or processing, or assembly, or assembly accessories.

[0015] Furthermore, the pit structure is a blind hole.

[0016] Furthermore, the counterweight has a ring portion, the crankshaft has a shoulder, and the surface of the shoulder is lower than the upper surface of the ring portion, so that a pit-like structure is formed between the counterweight and the crankshaft.

[0017] Further, the pit-shaped structure is an oil storage cover, the oil storage cover is connected to the counterweight, the counterweight has a ring portion, and the oil storage cover fits the edge position of the ring portion.

[0018] Furthermore, the counterweight has a ring portion, and the oil storage structure is a protrusion arranged at an edge position of the ring portion, and a pit-like structure is formed between the protrusion and the upper surface of the ring portion.

[0019] Furthermore, the oil storage structure is a loose porous structure capable of absorbing lubricating oil.

[0020] Furthermore, the counterweight has a counterweight portion, the counterweight portion has an inner arc surface, and the distance between the center position of the inner arc surface and the rotation center of the shaft is greater than the distance between the two sides of the inner arc surface and the rotation center of the shaft.

[0021] Furthermore, it also includes an oil shoveling structure.

[0022] Furthermore, the slider is constructed to be able to slide on the eccentric shaft of the compressor, and the slider is installed together with the counterweight or is formed in one piece.

[0023] Furthermore, a longitudinal channel for pumping lubricating oil is provided in the crankshaft, and an annular groove communicating with the longitudinal channel is provided on the crankshaft, and the annular groove is communicated with the outside and / or the oil storage structure.

[0024] Furthermore, a longitudinal channel for pumping lubricating oil is provided in the crankshaft, and an oil supply channel connected to the longitudinal channel is provided in the crankshaft, and the oil supply channel is constructed to be able to spray oil to the movable scroll end plate, or the thrust surface, or the counterweight.

[0025] Furthermore, it also includes an oil shoveling structure.

[0026] The present invention also provides a compressor having the above-mentioned oil storage structure.

[0027] In summary, the beneficial effect of the present invention is that lubricating oil can be supplied immediately after the compressor is started, which can effectively shorten the time from the start of the compressor to the lubrication of the thrust surface, thereby avoiding wear caused during this period. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the practical embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a schematic diagram of the lubricating oil supply scheme for the thrust surface of a conventional compressor;

[0030] Figure 2 is a schematic diagram of an oil storage structure provided on a counterweight and / or a crankshaft;

[0031] Figure 3 It is a schematic diagram of an oil storage structure provided on a slider, as well as a partial enlarged diagram and a partial cross-sectional diagram;

[0032] Figure 4 It is a schematic diagram of the oil storage structure formed on the ring portion;

[0033] Figure 5 It is a schematic diagram of the oil storage structure formed on the crankshaft shoulder;

[0034] Figure 6 It is a schematic diagram of the oil storage structure formed by the oil storage cover and a partial enlarged diagram;

[0035] Figure 7 Yes Figure 6 A top view of

[0036] Figure 8 It is a schematic diagram of the oil storage structure formed by assembly and a partial enlarged diagram;

[0037] Fig. 9 is a schematic diagram of a loose porous structure provided on a counterweight and / or a crankshaft;

[0038] Fig.10 It is a schematic diagram of a loose porous structure provided on a slider, a partial enlarged diagram, and a partial cross-sectional diagram;

[0039] Fig.11 It is a preferred embodiment of Example 3;

[0040] Fig.12 It is a schematic diagram of an oil storage structure and an oil shoveling structure;

[0041] Fig.13 It is a schematic diagram and a partial cross-sectional view of the integrated counterweight slider and the oil storage structure;

[0042] Fig.14 It is the overall assembly diagram and exploded diagram of the crankshaft with an annular groove;

[0043] Fig.15 yes Fig.14 A cross-sectional view of the plane where the middle annular groove is located;

[0044] Fig.16 It is a schematic diagram of an oil storage structure in conjunction with an injection oil circuit;

[0045] Fig.17 yes Fig.16 Cross-sectional view of some areas;

[0046] Fig.18 It is a schematic diagram of another oil storage structure in combination with an injection oil circuit. DETAILED DESCRIPTION

[0047] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. It should be pointed out that the embodiments are only detailed explanations of the present invention and should not be regarded as limitations of the present invention. All features disclosed in the embodiments of the present invention, or all steps in the methods or processes disclosed, except for mutually exclusive features and / or steps, can be combined in any way.

[0048] Example 1.

[0049] This embodiment provides an oil storage structure, including a counterweight 20 directly or indirectly mounted on the crankshaft 10, at least one of the counterweight 20 and the crankshaft 10 is provided with or connected to the oil storage structure, and the oil storage structure is configured to store a certain amount of lubricating oil, so that at the initial start-up of the compressor, as the counterweight 20 rotates, the lubricating oil in the oil storage structure can splash onto the movable scroll end plate 99 or the thrust surface of the compressor. By setting the oil storage structure, the problem of insufficient lubricating oil supply to the thrust surface when the compressor is started can be solved, the wear of the thrust surface can be reduced, and the service life of the compressor can be extended.

[0050] Preferably, a slider 30 is installed on the crankshaft 10 , and the slider 30 is configured to be able to slide on the eccentric shaft 11 of the crankshaft 10 . The slider 30 is provided with or connected to an oil storage structure.

[0051] Regarding how to set up the oil storage structure, the present invention application provides multiple ways.

[0052] Method 1: The oil storage structure is a pit-shaped structure, which can be used to store a certain amount of lubricating oil. The pit-shaped structure is composed of counterweight casting, powder metallurgy, processing, assembly parts, or assembly.

[0053] For example, counterweight casting, powder metallurgy, and processing are used to form a pit-shaped structure, and the pit-shaped structure includes but is not limited to the following methods:

[0054] If the pit-shaped structure is a blind hole, at least one of the counterweight 20, the crankshaft 10, and the slider 30 is provided with a blind hole. Figure 2 The blind hole 1 41 on the middle counterweight 20, the blind hole 2 42 on the crankshaft 10, as shown in the attached Figure 3 The blind hole 3 43 on the middle slider 30 can be in various shapes, not limited to circular, square, or conical.

[0055] For example, refer to the attached Figure 4 The counterweight 20 has a ring portion 21 , and the oil storage structure is a protrusion 22 arranged at the edge of the ring portion 21 , and a pit-like structure is formed between the protrusion 22 and the upper surface of the ring portion 21 .

[0056] For example, refer to the attached Figure 5 The oil storage structure is a protrusion 22 arranged at the edge of the shoulder 12 of the crankshaft 10, and a pit-like structure is formed between the protrusion 22 and the upper surface of the shoulder 12.

[0057] For example, a pit-shaped structure is formed by assembling accessories. The pit-shaped structure includes but is not limited to the following methods:

[0058] Refer to the attached Figure 6 , 7 The pit-shaped structure is an oil storage cover 50, which is connected to the counterweight 20. The counterweight 20 has a ring portion 21, and at least a portion of the oil storage cover 50 is in contact with the edge of the ring portion 21. Further, preferably: Figure 6 In the embodiment, at least a portion of the height of the position on the oil storage cover 50 that is in contact with the ring portion 21 is lower than the height of the edge of the counterweight ring portion 21, or at least a portion of the height of the position on the oil storage cover 50 that is in contact with the ring portion 21 is the same as the height of the edge of the counterweight ring portion 21.

[0059] It is not recommended that the height of the oil storage cover 50 where the ring portion 21 is in contact with the oil storage cover 50 is higher than the height of the edge of the counterweight ring portion 21, which will affect the oil storage effect. Furthermore, a blocking structure 51 is provided on the oil storage cover 50 to reduce the lubricating oil inside the oil storage cover from being thrown out under the action of centrifugal force. The simplest blocking structure 51 is a flange on the oil storage cover 50.

[0060] It should be noted that the "fitting" here includes that the edge of the oil storage cover 50 and the ring portion 21 are completely fitted together, and that the edge of the oil storage cover 50 and the ring portion 21 are close to each other with a gap between them. It is only necessary to ensure that the lubricating oil on the ring portion 21 can enter the oil storage cover 50. Figure 6 , 7 Only one fitting method is disclosed, and there are many other fitting methods to choose from.

[0061] For example, a concave structure is formed by assembling. Figure 4 The counterweight has a ring portion 21 , and the crankshaft 10 has a shoulder 12 . The surface of the shoulder 12 is lower than the upper surface of the ring portion 21 , so that a pit-like structure is formed between the counterweight and the crankshaft 10 .

[0062] Method 2: The oil storage structure is a loose porous structure that can absorb lubricating oil. The loose porous structure can realize the function of oil storage and also help the lubricating oil to enter the loose porous structure faster.

[0063] For details, please refer to the attached Fig. 9 At least one of the counterweight 20 and the crankshaft 10 is provided with or connected to a loose porous structure, such as the attached Fig. 9 The loose porous structure 1 61 on the middle counterweight 20 and the loose porous structure 2 62 on the crankshaft 10 are shown in the attached Fig.10 The loose porous structure 63 on the middle slider 30.

[0064] Other ways: freely combine the solutions in way 1 and way 2. For example, the protrusions set at the edge of the ring 21 in way 1 are combined with the loose porous structure set in way 2. Since there are too many ways of free combination, the present invention does not list them one by one.

[0065] Example 2.

[0066] This embodiment provides an oil storage structure. Figure 3, including a counterweight 20 directly or indirectly mounted on the crankshaft 10, a slider 30 mounted on the crankshaft 10, an oil storage structure provided on or connected to the slider 30, and the oil storage structure is configured to store a certain amount of lubricating oil, so that at the initial start-up of the compressor, as the counterweight 20 rotates, the lubricating oil in the oil storage structure can splash onto the movable scroll end plate 99 or the thrust surface of the compressor. By setting the oil storage structure, the problem of insufficient lubricating oil supply to the thrust surface when the compressor is started can be solved, the wear of the thrust surface can be reduced, and the service life of the compressor can be extended.

[0067] The other implementations of this embodiment are the same as those of Embodiment 1.

[0068] Example 3.

[0069] This embodiment provides an oil storage structure, which is an improvement based on Embodiment 1 or Embodiment 2. In this embodiment, the counterweight 20 in the counterweight oil storage structure includes a counterweight portion 23, and the counterweight portion 23 has an inner arc surface 24. Points at different positions on the inner arc surface 24 are at different distances from the rotation center O of the shaft, so that when the compressor is working, the lubricating oil will gather at a place on the inner arc surface 24 that is far from the rotation center O of the shaft under the action of centrifugal force, thereby more efficiently supplying oil.

[0070] As a preferred solution, refer to the attached Fig.11 The distance R1 between the center of the inner arc surface 24 and the rotation center O of the shaft is greater than the distance R2 between the two sides of the inner arc surface and the rotation center O of the shaft.

[0071] The other implementations of this embodiment are the same as those of Embodiment 1 or 2.

[0072] Example 4.

[0073] This embodiment provides an oil storage structure, which is an improvement based on embodiment 1, 2 or 3. In this embodiment, the counterweight oil storage structure also includes an oil shoveling structure 70. When the oil shoveling structure 70 is used in conjunction with the oil storage structure, it will have a higher efficiency when supplying oil to the movable scroll end plate 99 or the thrust surface. Fig.12 An oil storage structure is disclosed, in which a blind hole 44 is provided on the ring portion 21. At the same time, the counterweight oil storage structure also includes an oil shoveling structure 70 that can provide a guiding inclined surface 71. Therefore, at the initial stage of compressor startup, as the counterweight 20 rotates, the lubricating oil in the oil storage structure can splash out and be quickly thrown by the oil shoveling structure 70 onto the movable scroll end plate 99 or thrust surface of the compressor, thereby having extremely high oil supply efficiency.

[0074] Since there are many specific implementation structures of the oil scraping structure 70, they are not listed one by one here. Other oil scraping structures 70 can refer to the existing oil scraping structures 70 in the prior art, including but not limited to the oil scraping structure 70 provided in the CN201910656199.6 patent.

[0075] Other implementations of this embodiment are the same as those of Embodiment 1, 2 or 3.

[0076] Example 5.

[0077] At present, in some traditional compressor thrust surface lubrication solutions, such as the attached Figure 1 The lubricating oil pumped out from the crankshaft 10 falls onto the annular portion 21 of the counterweight 20 through the first gap 96 between the eccentric shaft 11 and the movable scroll hub 98. The annular portion 21 of the counterweight will receive all the lubricating oil and then collide with the rotating counterweight 20, thereby splashing onto the movable scroll end plate or the thrust surface. It should be noted that in the traditional scheme, almost all the lubricating oil pumped out from the crankshaft 10 will enter the thrust surface, causing too much lubricating oil to flow through the thrust surface. The lubricating oil temperature in the compressor rises rapidly, and the lubricating oil temperature is always high, which will lead to a decrease in the lubricating performance of the lubricating oil and a decrease in the sealing of the lubricating oil film. At the same time, long-term high temperature will accelerate the oxidation of the lubricating oil, generate carbon deposits and lubricating oil sludge, and make the compressor maintenance frequent. If regular maintenance is not performed or maintenance is not in place, the compressor will also frequently overheat and shut down.

[0078] This embodiment provides an oil storage structure for eliminating the heating of lubricating oil. This embodiment is an improvement based on any one of Embodiments 1 to 4. That is, this embodiment can be combined with any one of Embodiments 1 to 4. Fig.13 In the counterweight oil storage structure of this embodiment, the slider 30 is installed together with the counterweight 20 or is integrally formed. Under this structure, when the compressor is started, a second gap 97 will be generated between the slider 30 and the eccentric shaft 11 of the scroll compressor. Different from the solution of the traditional compressor, since the counterweight 20 is installed on the slider 30 instead of being directly installed on the crankshaft 10, the second gap 97 makes it impossible for the annular portion 21 of the counterweight to receive all the lubricating oil. The second gap 97 will guide part of the lubricating oil pumped up from the crankshaft 10 to flow back to the lubricating oil pool, and the remaining lubricating oil will flow to the annular portion of the counterweight 20 through the third gap 95 between the slider 30 and the movable scroll hub 98 bearing. Among this part of the lubricating oil, part of the lubricating oil enters the oil storage structure, and part of the lubricating oil will be continuously sent to the movable scroll end plate 99 and the thrust surface as the compressor runs. The above structure solves the problem of too much lubricating oil entering the thrust surface, slows down the speed of the lubricating oil temperature rise in the compressor, and also reduces the maximum temperature that the lubricating oil temperature can reach, ensuring that the lubricating oil can maintain good lubrication and sealing performance, reducing the formation of carbon deposits and lubricating oil sludge, and also reducing the maintenance frequency of the compressor and the risk of overheating. At the same time, the integrated design helps to reduce processing costs.

[0079] Preferably, when the solution of this embodiment is adopted, if it is found that the thrust surface has a problem of insufficient oil supply, the oil supply can be supplemented by opening an auxiliary oil supply hole 31 that is connected inside and outside on the slider 30. During the operation of the compressor, part of the lubricating oil that originally flowed back into the lubricating oil pool through the gap will enter the annular portion of the counterweight 20 through the auxiliary oil supply hole 31. At the same time, since the slider will slide frequently during the operation of the compressor, the oil flowing out of the auxiliary oil supply hole 31 will have a certain spray effect, which helps to collide with the counterweight to produce splashing.

[0080] Preferably, the auxiliary oil supply hole 31 is disposed at a position of the slider 30 close to the ring portion 21 , so as to avoid the movable scroll hub blocking the lubricating oil flowing out of the auxiliary oil supply hole 31 as much as possible.

[0081] Those skilled in the art can design the auxiliary oil supply hole 31 to the most suitable size according to the actual operation of the compressor to achieve the best oil supply to the thrust surface.

[0082] Other implementations of this embodiment are the same as those of Embodiment 1, 2, 3, or 4.

[0083] Example 6.

[0084] The present embodiment provides an oil storage structure, which is an improvement based on any one of Embodiments 1 to 5, that is, the present embodiment can be combined with any one of Embodiments 1 to 5 alone, so that the lubricating oil can enter the oil storage structure faster, and the oil can be supplied to the movable scroll end plate and the thrust surface more efficiently, and the lubricating oil in the oil storage structure can be replenished more easily. In the present embodiment, the counterweight oil storage structure also includes a longitudinal channel 80 located in the crankshaft 10 for pumping lubricating oil, and an annular groove 81 connected to the longitudinal channel 80 is provided on the crankshaft 10 and / or the counterweight 20, and the annular groove 81 is connected to the outside world and / or the oil storage structure (here the outside world refers to the space inside the compressor). Combined with the above structure, during the operation of the compressor, as the crankshaft 10 rotates, part of the lubricating oil in the longitudinal channel 80 will enter the annular groove 81 under the action of centrifugal force. As the lubricating oil in the annular groove 81 gradually increases, the lubricating oil in the annular groove 81 flows to the outside and / or the oil storage structure through the second connecting channel 83. The second connecting channel 83 is arranged inside the crankshaft 10, or inside the counterweight 20, or is formed by assembling the crankshaft 10 and the counterweight 20 together. Compared with the traditional compressor structure, by setting the annular groove 81, the lubricating oil no longer needs to enter the movable scroll hub 98 position first, but can directly enter the outside and / or the oil storage structure, which improves the oil supply efficiency of the movable scroll end plate and the thrust surface, and also makes it easier to replenish the lubricating oil in the oil storage structure.

[0085] In the attached Fig.14 , Attachment Fig.15In one embodiment disclosed, an annular groove 81 is provided on the crankshaft 10, the annular groove 81 is connected to the longitudinal channel 80 through a first connecting channel 82, a second connecting channel 83 is formed after the crankshaft 10 and the counterweight 20 are assembled together, and the second connecting channel 83 is connected to the outside. The lubricating oil in the longitudinal channel 80 enters the annular groove 81 through the first connecting channel 82, and then enters the outside through the second connecting channel 83. A part of the lubricating oil in the outside is splashed onto the movable scroll end plate and the thrust surface, and a part of the lubricating oil can be used to replenish the lubricating oil in the oil storage structure.

[0086] Other implementations of this embodiment are the same as those of Embodiment 1, Embodiment 2, Embodiment 3, Embodiment 4, or Embodiment 5.

[0087] Example 7.

[0088] This embodiment provides an oil storage structure, which is an improvement based on any one of Embodiments 1 to 6, that is, this embodiment can be combined with any one of Embodiments 1 to 6 alone, and can improve the oil supply efficiency of the movable scroll end plate 99 and the thrust surface.

[0089] The counterweight oil storage structure also includes an oil supply channel 89 connected to the longitudinal channel 80. The oil supply channel 89 is configured to spray oil to the movable scroll end plate 99, the thrust surface or the counterweight. For example, the second connecting channel 83 provided in Example 6 can be slightly improved to become a solution of the oil supply channel 89. It is only necessary to limit the aperture of the connecting outlet of the second connecting channel 83 in Example 6 with the outside world so that it can form an attached Fig.16 , Attachment Figure 7 By fine-tuning the direction of the outlet of the oil supply passage 89, the oil supply passage 89 can spray oil toward the movable scroll end plate 99, or the thrust surface or the counterweight.

[0090] For another example, limiting the aperture of the auxiliary oil supply hole 31 in embodiment 5 and the outlet communicating with the outside world can also become a solution for the oil supply channel 89, see the attached Fig.18 As shown, an injection oil passage 90 can also be formed. Fig.16 , Attachment Fig.17 Injection oil circuit, attached Fig.18 The injection oil route in the slide block 30 is formed by sliding, so the Fig.18 The injection oil passage 90 is intermittent.

[0091] Other implementations of this embodiment are the same as those of Embodiment 1 or Embodiment 2 or Embodiment 3 or Embodiment 4 or Embodiment 5 or Embodiment 6.

[0092] Example 8.

[0093] This embodiment provides a compressor having the structure of any one of Embodiments 1 to 7.

[0094] Other implementations of this embodiment are the same as Example 1 or Example 2 or Example 3 or Example 4 or Example 5 or Example 6 or Example 7.

[0095] The above are only specific implementation methods of the invention, but the protection scope of the invention is not limited to this. Any changes or substitutions that are not conceived through creative work should be covered within the protection scope of the invention. Therefore, the protection scope of the invention should be based on the protection scope defined in the claims.

[0096] The invention shown and described herein can be implemented in the absence of any element, limitation specifically disclosed herein. The terms and expressions used are used as illustrative terms rather than limiting, and it is not intended to exclude any equivalents of the features shown and described or parts thereof in the use of these terms and expressions, and it should be recognized that various modifications are feasible within the scope of the present invention. It should therefore be understood that although the present invention is specifically disclosed through various embodiments and optional features, modifications and variations of the concepts herein can be adopted by those of ordinary skill in the art, and it is believed that these modifications and variations fall within the scope of the present invention as defined in the appended claims.

[0097] The contents of the articles, patents, patent applications, and all other documents and electronically available information referenced or described herein are incorporated herein by reference in their entirety to the same extent as if each individual publication was specifically and individually indicated to be incorporated by reference. Applicants reserve the right to incorporate into this application any and all materials and information from any such articles, patents, patent applications, or other documents.

Claims

1. An oil storage structure, characterized in that: It includes a counterweight directly or indirectly installed on the crankshaft, at least one of the counterweight and the crankshaft is provided with or connected to an oil storage structure, and the oil storage structure is constructed to store a certain amount of lubricating oil, so that at the initial start-up of the compressor, as the counterweight rotates, the lubricating oil in the oil storage structure can splash onto the movable scroll end plate or thrust surface of the compressor.

2. An oil storage structure according to claim 1, characterized in that: A sliding block is installed on the crankshaft, and an oil storage structure is arranged on or connected to the sliding block.

3. An oil storage structure, characterized in that: It includes a counterweight directly or indirectly installed on the crankshaft, a slider is installed on the crankshaft, and an oil storage structure is provided on or connected to the slider. The oil storage structure is constructed to store a certain amount of lubricating oil, so that at the initial start-up of the compressor, as the counterweight rotates, the lubricating oil in the oil storage structure can splash onto the movable scroll end plate or thrust surface of the compressor.

4. An oil storage structure according to claim 1, 2 or 3, characterized in that: The oil storage structure is a pit-shaped structure.

5. An oil storage structure according to claim 4, characterized in that: The pit-shaped structure is formed by weight casting, or powder metallurgy, or machining, or assembly, or assembly parts.

6. An oil storage structure according to claim 4, characterized in that: The pit structure is a blind hole.

7. An oil storage structure according to claim 4, characterized in that: The counterweight has a ring portion, and the crankshaft has a shoulder. The surface of the shoulder is lower than the upper surface of the ring portion, so that a pit-shaped structure is formed between the counterweight and the crankshaft.

8. An oil storage structure according to claim 4, characterized in that: The pit-shaped structure is an oil storage cover, which is connected to the counterweight. The counterweight has a ring portion, and the oil storage cover fits the edge position of the ring portion.

9. An oil storage structure according to claim 4, characterized in that: The counterweight has a ring portion, and the oil storage structure is a protrusion arranged at the edge of the ring portion, and a pit-shaped structure is formed between the protrusion and the upper surface of the ring portion.

10. An oil storage structure according to claim 1, 2 or 3, characterized in that: The oil storage structure is a loose porous structure capable of absorbing lubricating oil.

11. An oil storage structure according to claim 1, 2 or 3, characterized in that: The counterweight has a counterweight portion, the counterweight portion has an inner arc surface, and the distance between the center position of the inner arc surface and the rotation center of the shaft is greater than the distance between the two sides of the inner arc surface and the rotation center of the shaft.

12. An oil storage structure according to any one of claims 1 to 11, characterized in that: An oil shoveling structure is also included.

13. An oil storage structure according to any one of claim 12, characterized in that: The slider is configured to be able to slide on the eccentric shaft of the compressor, and the slider is installed together with the counterweight or is formed integrally with the counterweight.

14. An oil storage structure according to any one of claims 1 to 11, characterized in that: The slider is configured to be able to slide on the eccentric shaft of the compressor, and the slider is installed together with the counterweight or is formed integrally with the counterweight.

15. An oil storage structure according to claim 13, characterized in that: A longitudinal channel for pumping lubricating oil is provided in the crankshaft, and an annular groove communicating with the longitudinal channel is provided on the crankshaft, and the annular groove is communicated with the outside and / or the oil storage structure.

16. An oil storage structure according to any one of claims 1 to 11, characterized in that: The crankshaft is provided with a longitudinal channel for pumping lubricating oil, and the crankshaft is provided with an oil supply channel connected with the longitudinal channel. The oil supply channel is configured to spray oil toward the movable scroll end plate, the thrust surface, or the counterweight.

17. An oil storage structure according to claim 16, characterized in that: An oil shoveling structure is also included.

18. A compressor, characterized in that: An oil storage structure according to any one of claims 1 to 17.

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