Lower flange assembly and compressor

Abstract

This invention provides a lower flange assembly and a compressor. The lower flange assembly includes: a flange body with an oil guide hole, the two ends of which extend to the upper and lower end faces of the flange body, respectively; a capillary structure disposed within the oil guide hole and extending axially along the oil guide hole; the lower end of the capillary structure extends out from the lower end of the oil guide hole and into an oil storage structure located below the flange body, so that oil in the oil storage structure moves from the lower end of the capillary structure to the upper end of the capillary structure; the upper end of the capillary structure extends to the upper end of the oil guide hole, so that the oil moving to the upper end of the capillary structure flows into the gap on the upper end face of the flange body, thereby achieving good lubrication between the flange body and the rollers, and between the flange body and the sliding vane.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more specifically, to a lower flange assembly and a compressor. Background Technology

[0002] Currently, rotary compressors are mainly used in household air conditioning systems.

[0003] Currently, it is necessary to reduce the warming potential of air conditioning units; therefore, the refrigerant used needs to be changed from the existing R32 to natural refrigerant such as R290.

[0004] However, since most air conditioning units with low warming potential use flammable refrigerants, it is necessary to reduce the amount of refrigerant supplied to the air conditioning unit.

[0005] As one of the technical means, the casing pressure of a rotary compressor needs to be low; however, low back pressure compressors have difficulty pumping the refrigerant oil in the oil sump into the various parts of the moving components in a timely manner, which can easily cause contact friction between the components and lead to component failure.

[0006] In particular, the lubrication inside the cylinder often requires a large amount of refrigerant oil to be poured in, ensuring that the oil level covers the lower flange, thereby preventing contact friction between the crankshaft, rollers, and lower flange. However, pouring in a large amount of refrigerant oil will increase the amount of oil discharged. Summary of the Invention

[0007] The main objective of this invention is to provide a lower flange assembly and a compressor to solve the problem of high exhaust oil discharge rate in existing scroll compressors.

[0008] To achieve the above objectives, according to one aspect of the present invention, a lower flange assembly is provided for use in a compressor. The lower flange assembly includes: a flange body having an oil guide hole, the two ends of which extend to an upper end face and a lower end face of the flange body, respectively; a capillary structure disposed within the oil guide hole and extending axially along the oil guide hole; wherein the lower end of the capillary structure extends out from the lower end of the oil guide hole and into an oil storage structure located below the flange body, so that oil in the oil storage structure moves from the lower end of the capillary structure to the upper end of the capillary structure; the upper end of the capillary structure extends to the upper end of the oil guide hole, so that the oil moving to the upper end of the capillary structure flows into a gap on the upper end face of the flange body; the gap on the upper end face of the flange body includes a gap between the upper end face of the flange body and the lower end face of the compressor rollers, and a gap between the upper end face of the flange body and the lower end face of the compressor vanes.

[0009] Furthermore, there are multiple oil guide holes, each containing a capillary structure; the multiple oil guide holes include a first oil guide hole and a second oil guide hole; the oil storage structure includes: an oil sump, with the lower end of the capillary structure in the first oil guide hole extending into the oil sump; an oil storage space, where the compressor mounting component is connected to the lower end face of the flange body, forming an oil storage space between the mounting component and the flange body; an exhaust channel is provided on the flange body, with the upper end of the exhaust channel communicating with the compressor's compression chamber and the lower end communicating with the oil storage space, so that the compressed gas in the compression chamber flows into the oil storage space through the exhaust channel, and the oil droplets separated from the compressed gas are deposited at the bottom of the oil storage space; the lower end of the capillary structure in the second oil guide hole extends into the bottom oil of the oil storage space.

[0010] Furthermore, there is at least one first oil guide hole.

[0011] Furthermore, there is at least one second oil guide hole.

[0012] Furthermore, the lower flange assembly also includes a support portion with a support channel, which is located below the flange body; the capillary structure in the oil guide hole passes through the support channel, and the lower end of the capillary structure extends from the lower end of the support channel to extend into the oil storage structure.

[0013] Furthermore, the capillary structure includes a long strip structure made of capillary tubes and / or capillary fibers, wherein the extension direction of the capillary tubes is the same as the extension direction of the capillary structure, and the extension direction of the long strip structure is the same as the extension direction of the capillary structure.

[0014] Furthermore, an oil-holding groove is recessed on the upper end face of the flange body, and the oil-holding groove is connected to the second oil guide hole, so that the oil at the upper end of the capillary structure in the second oil guide hole flows into the oil-holding groove and then into the gap on the upper end face of the flange body.

[0015] Furthermore, the lower end of the capillary structure in the first oil guide hole extends to the bottom of the oil sump.

[0016] Furthermore, relative to the outer periphery of the flange body, the first oil guide hole is located close to the central axis of the flange body.

[0017] Furthermore, the flange body includes a middle section and a side section, with the side section surrounding the middle section; the upper end face of the middle section and the upper end face of the side section are located on the same plane and together form the upper end face of the flange body; the lower end face of the middle section is located on the side of the lower end face of the side section away from the upper end face of the flange body; a first oil guide hole is provided on the middle section, and a second oil guide hole is provided on the side section.

[0018] Furthermore, a first channel is provided on the flange body, with its two ends extending to the upper and lower ends of the flange body, respectively; the lower end of the first channel is connected to the oil storage space, and the upper end of the first channel is connected to the air outlet of the compressor, so that the compressed gas flowing into the oil storage space passes through the first channel and the air outlet in sequence before being discharged.

[0019] According to another aspect of the invention, a compressor is provided that includes the aforementioned lower flange assembly.

[0020] According to the technical solution of the present invention, the lower flange assembly includes a flange body, on which an oil guide hole is provided, the upper and lower ends of which extend to the upper end face and the lower end face of the flange body, respectively; the lower flange assembly also includes a capillary structure, which is disposed in the oil guide hole and extends along the axial direction of the oil guide hole.

[0021] The lower end of the capillary structure extends from the lower end of the oil guide hole and into the oil storage structure located below the flange body, so that the oil in the oil storage structure moves from the lower end of the capillary structure to the upper end of the capillary structure under capillary action.

[0022] The upper end of the capillary structure extends to the upper end of the oil guide hole; the oil moving to the upper end of the capillary structure can flow into the gap on the upper end face of the flange body; in this way, good lubrication can be achieved between the flange body and the roller, and between the flange body and the sliding plate. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0024] Figure 1 A schematic diagram of an embodiment of a compressor according to the present invention is shown;

[0025] Figure 2 It shows Figure 1 A partial enlarged view of the lower flange assembly of the compressor in the image;

[0026] Figure 3 A schematic diagram of the lower flange assembly according to the present invention is shown; wherein the capillary structure includes a capillary tube;

[0027] Figure 4 A schematic diagram of the structure of the lower flange assembly according to the present invention is shown; wherein the capillary structure includes a long strip structure made of capillary fiber material;

[0028] Figure 5 A top view of the lower flange assembly according to the present invention is shown.

[0029] The above figures include the following reference numerals:

[0030] 100. Lower flange assembly;

[0031] 10. Flange body; 101. Middle section; 102. Side section; 11. Oil guide hole; 111. First oil guide hole; 112. Second oil guide hole; 12. Oil reservoir; 13. First channel; 14. Exhaust channel; 15. Oil return channel;

[0032] 20. Capillary structure; 30. Supporting part;

[0033] 91. Oil sump; 92. Roller; 93. Sliding vane; 94. Cylinder; 95. Mounting component; 951. Oil storage space; 952. High-pressure oil sump; 96. Motor; 97. Crankshaft; 981. Air inlet; 982. Low-pressure chamber; 983. Air outlet; 99. Upper flange; 990. Third channel; 991. Air intake; 992. Upper silencer; 993. Air inlet. Detailed Implementation

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0036] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0037] This invention provides a lower flange assembly 100, which is used in a compressor. Please refer to [reference needed]. Figures 1 to 5 The lower flange assembly 100 includes the flange body 10.

[0038] The flange body 10 is positioned below the cylinder 94 of the compressor to seal the lower end of the cylinder 94; the upper end face of the flange body 10 is in sealing contact with the lower end face of the cylinder 94; the upper end face of the flange body 10 is in contact with the lower end face of the roller 92 inside the cylinder 94, and the upper end face of the flange body 10 is in contact with the lower end face of the sliding plate 93 inside the cylinder 94; due to the rotation of the roller 92 and the sliding of the sliding plate 93, there is a gap between the upper end face of the flange body 10 and the lower end face of the roller 92, and there is a gap between the upper end face of the flange body 10 and the lower end face of the sliding plate 93.

[0039] The flange body 10 is provided with an oil guide hole 11, the upper and lower ends of which extend to the upper and lower end faces of the flange body 10, respectively; the lower flange assembly 100 also includes a capillary structure 20, which is disposed in the oil guide hole 11 and extends along the axial direction of the oil guide hole 11.

[0040] The lower end of the capillary structure 20 extends from the lower end of the oil guide hole 11 and into the oil storage structure located below the flange body 10, so that under capillary action, the oil in the oil storage structure moves from the lower end of the capillary structure 20 along the capillary structure 20 to the upper end of the capillary structure 20.

[0041] The upper end of the capillary structure 20 extends to the upper end of the oil guide hole 11; the oil moving to the upper end of the capillary structure 20 can flow into the gap on the upper end face of the flange body 10; the gap on the upper end face of the flange body 10 includes the gap between the upper end face of the flange body 10 and the lower end face of the roller 92, and the gap between the upper end face of the flange body 10 and the lower end face of the slide 93; in this way, good lubrication can be achieved between the flange body 10 and the roller 92, and between the flange body 10 and the slide 93.

[0042] It should be noted that capillary action refers to the process by which oil within the oil storage structure wets the fine fiber walls of the capillary structure 20 and moves upward along the gaps between the fibers. Specifically, since the capillary structure 20 is an oil-wetting solid, oil molecules will spread out to the maximum extent on the fiber walls under the influence of attraction. These oil molecules spread out on the fiber walls will then "pull" the oil molecules below them upward through surface tension. The pulled-up oil molecules will then spread out again on higher fiber walls, and this cycle continues, causing the oil level in the fiber gaps to rise continuously, thereby realizing the process of oil transport from bottom to top.

[0043] Specifically, the axial direction of the flange body 10 is the same as that of the compressor.

[0044] Optionally, the axial direction of the oil guide hole 11 is parallel to the axial direction of the flange body 10, that is, the oil guide hole 11 penetrates the flange body 10 along the axial direction of the flange body 10.

[0045] Optionally, the upper end of the capillary structure 20 is flush with the upper end face of the flange body 10.

[0046] In this application, the oil storage structure includes an oil sump 91 and an oil storage space 951; wherein, the compressor includes a mounting component 95, which is connected to the lower end face of the flange body 10, and the mounting component 95 and the flange body 10 form an oil storage space 951; an exhaust channel 14 is provided on the flange body 10, and the upper and lower ends of the exhaust channel 14 extend to the upper end face and the lower end face of the flange body 10, respectively. The upper end of the exhaust channel 14 is connected to the compression chamber of the compressor, and the lower end of the exhaust channel 14 is connected to the oil storage space 951, so that the compressed gas in the compression chamber flows into the oil storage space 951 through the exhaust channel 14. The compressed gas carries oil droplets, and the oil droplets separated from the compressed gas are deposited at the bottom of the oil storage space 951.

[0047] The gas in the exhaust channel 14 flows from the top to the bottom. During the flow of the compressed gas through the exhaust channel 14, the droplet following ability weakens due to changes in the flow field velocity, droplet size and distribution, and the liquid and gas in the gas-liquid mixture separate. The separated liquid is deposited at the bottom of the oil storage space 951 under the action of gravity.

[0048] There are multiple oil guide holes 11, each containing a capillary structure 20; the multiple oil guide holes 11 include a first oil guide hole 111 and a second oil guide hole 112. The lower end of the capillary structure 20 in the first oil guide hole 111 extends into the oil sump 91, so that the oil in the oil sump 91 moves from the lower end of the capillary structure 20 in the first oil guide hole 111 along the capillary structure 20 to the upper end of the capillary structure 20. The lower end of the capillary structure 20 in the second oil guide hole 112 extends into the bottom oil of the oil storage space 951, so that the oil in the bottom oil of the oil storage space 951 moves from the lower end of the capillary structure 20 in the second oil guide hole 112 along the capillary structure 20 to the upper end of the capillary structure 20.

[0049] Optionally, there is at least one first oil guide hole 111.

[0050] Optionally, there is at least one second oil guide hole 112.

[0051] Specifically, the oil that moves to the upper end of the capillary structure 20 in the first oil guide hole 111 flows into the gap on the upper end face of the flange body 10. That is, the oil that moves to the upper end of the capillary structure 20 in the first oil guide hole 111 flows into the gap between the upper end face of the flange body 10 and the lower end face of the roller 92, and / or flows into the gap between the upper end face of the flange body 10 and the lower end face of the slide plate 93.

[0052] Specifically, the oil that moves to the upper end of the capillary structure 20 in the second oil guide hole 112 flows into the gap on the upper end face of the flange body 10. That is, the oil that moves to the upper end of the capillary structure 20 in the second oil guide hole 112 flows into the gap between the upper end face of the flange body 10 and the lower end face of the roller 92, and / or flows into the gap between the upper end face of the flange body 10 and the lower end face of the slide plate 93.

[0053] Optionally, the axial direction of the exhaust passage 14 is parallel to the axial direction of the flange body 10.

[0054] Optionally, mounting component 95 is a lower muffler.

[0055] In the existing technology, regarding the oil accumulated on the lower muffler, on the one hand, when the compressed gas flowing between the lower muffler and the lower flange passes over the oil accumulated on the lower muffler, the compressed gas further carries the oil, thereby increasing the oil content of the compressed gas and thus increasing the oil discharge rate of the compressor; on the other hand, because the oil accumulates on the lower muffler, the actual amount of oil used to lubricate the compressor is reduced, thus affecting the lubrication effect of the compressor and consequently affecting its operation; thirdly, because the oil accumulates on the lower muffler, the actual amount of oil used to lubricate the compressor is reduced, so it is necessary to add more oil to the compressor to make up for the lack of oil for proper lubrication, which leads to oil waste and increased oil costs.

[0056] This application, by setting a second oil guide hole 112 and its internal capillary structure 20, can promptly guide the oil on the lower muffler to the gap on the upper end face of the flange body 10. On the one hand, it can reduce or avoid the accumulation of oil on the lower muffler, thereby avoiding an increase in the oil content of the compressed gas and thus avoiding an increase in the oil discharge rate of the compressor. On the other hand, guiding the oil on the lower muffler to the gap on the upper end face of the flange body 10 can lubricate the flange body 10 and the rollers 92 and / or the vanes 93, thereby ensuring the lubrication effect on the compressor and thus ensuring the operation of the compressor. Thirdly, guiding the oil on the lower muffler to the gap on the upper end face of the flange body 10 can lubricate the flange body 10 and the rollers 92 and / or the vanes 93, thereby reducing the amount of oil injected into the compressor, avoiding or reducing oil waste, and helping to reduce oil costs.

[0057] In this application, the lower flange assembly 100 further includes a support portion 30 with a support channel, the upper and lower ends of which extend to the upper and lower end faces of the support portion 30, respectively. The support portion 30 is located below the flange body 10, and the support channel is located below the oil guide hole 11. The capillary structure 20 in the oil guide hole 11 passes through the support channel, that is, the capillary structure 20 passes through both the oil guide hole 11 and the support channel. The lower end of the capillary structure 20 extends from the lower end of the support channel to enter the oil storage structure. By providing the support portion 30, the portion of the capillary structure 20 extending from the oil guide hole 11 is supported and shaped, preventing the portion of the capillary structure 20 extending from the oil guide hole 11 from swinging arbitrarily.

[0058] Optionally, the support portion 30 is connected to the lower end face of the flange body 10 so that the upper end of the support channel communicates with the lower end of the oil guide hole 11. Alternatively, the support portion 30 is not connected to the flange body 10, and the support portion 30 is fixed to the capillary structure 20 by the friction between itself and the capillary structure 20 in the support channel.

[0059] Optionally, the support channel is coaxially arranged with the oil guide hole 11 so that the portion of the capillary structure 20 extending from the oil guide hole 11 can be kept in the same straight direction as the portion of the capillary structure 20 passing through the oil guide hole 11, so as to facilitate the movement of oil along the capillary structure 20.

[0060] Optionally, the support part 30 is a tubular structure, and the cavity of the support part 30 is a support channel.

[0061] Optionally, each oil guide hole 11 corresponds to a support part 30.

[0062] In this application, the capillary structure 20 is a capillary material capable of capillary action.

[0063] Specifically, the capillary structure 20 includes a long strip structure made of capillary tubes and / or capillary fibers, wherein the extension direction of the capillary tubes is the same as the extension direction of the capillary structure 20, and the extension direction of the long strip structure made of capillary fibers is the same as the extension direction of the capillary structure 20.

[0064] like Figure 3 As shown, the capillary structure 20 includes multiple capillaries. (As...) Figure 4 As shown, the capillary structure 20 includes a long strip structure made of capillary fiber material, the shape of which is similar to a lamp wick.

[0065] Alternatively, if the portion of the capillary structure 20 extending from the oil guide hole 11 can be shaped and is not easily deformed, the support portion 30 can be omitted.

[0066] In this application, an oil reservoir 12 is recessed on the upper end face of the flange body 10. The oil reservoir 12 is connected to the second oil guide hole 112 so that the oil at the upper end of the capillary structure 20 in the second oil guide hole 112 flows into the oil reservoir 12 and then into the gap on the upper end face of the flange body 10.

[0067] By setting the oil reservoir 12, on the one hand, the contact area between the upper end face of the flange body 10 and the sliding vane 93 and / or roller 92 can be reduced, thereby reducing the frictional force caused by the upper end face of the flange body 10 to the sliding vane 93 and / or roller 92; on the other hand, oil can be stored in the oil reservoir 12 before the compressor starts, so that oil can lubricate the upper end face of the flange body 10 between the sliding vane 93 and / or roller 92 and the flange body 10 at the moment the compressor starts.

[0068] Optionally, the oil reservoir 12 is a strip-shaped groove, and the extension direction of the oil reservoir 12 is perpendicular to the axial direction of the flange body 10; along the extension direction of the oil reservoir 12, one end of the oil reservoir 12 extends to the wall of the second oil guide hole 112 to communicate with the second oil guide hole 112.

[0069] Optionally, the oil reservoir 12 extends along a radial line of the flange body 10.

[0070] Optionally, the oil reservoir 12 is located below the sliding vane 93.

[0071] In this application, a first channel 13 is provided on the flange body 10, and the two ends of the first channel 13 extend to the upper end face and the lower end face of the flange body 10, respectively. The lower end of the first channel 13 is connected to the oil storage space 951, and the upper end of the first channel 13 is connected to the air outlet 983 of the compressor, so that the compressed gas flowing into the oil storage space 951 is discharged after passing through the first channel 13 and the air outlet 983 in sequence.

[0072] Optionally, the axial direction of the first channel 13 is parallel to the axial direction of the flange body 10.

[0073] Specifically, the outlet 983 is located on the upper flange 99 of the compressor; a second channel is provided on the cylinder 94, with its upper and lower ends extending to the upper and lower end faces of the cylinder 94, respectively; the lower end of the second channel is connected to the upper end of the first channel 13; a third channel 990 is provided on the upper flange 99, with its lower end extending to the lower end face of the upper flange 99, the upper end of the second channel being connected to the lower end of the third channel 990, and the upper end of the third channel 990 being connected to the outlet 983. Compressed gas flowing into the oil storage space 951 is discharged after sequentially passing through the first channel 13, the second channel, the third channel 990, and the outlet 983.

[0074] Optionally, the axis of the second channel is parallel to the axis of the cylinder 94; the axis of the third channel 990 is parallel to the axis of the upper flange 99.

[0075] In this application, the lower end of the capillary structure 20 in the first oil guide hole 111 extends into the bottom of the oil sump 91 so that the oil at the bottom of the oil sump 91 can also be used for lubrication. In this way, the oil in the oil sump 91 can be used for lubrication as much as possible, which not only ensures the lubrication effect on the compressor, but also avoids or reduces the waste of oil, and at the same time reduces the amount of oil to be filled, which helps to save oil costs.

[0076] When the oil in the oil sump 91 is drawn upwards, it typically forms a vortex. Therefore, the oil in the middle of the oil sump 91 is at a relatively low position, which is relative to the outer periphery of the oil sump 91. In this application, the first oil guide hole 111 is positioned close to the central axis of the flange body 10 relative to its outer periphery, allowing the lower end of the capillary structure 20 within the first oil guide hole 111 to extend into the middle of the oil sump 91. This enables the oil in the middle of the oil sump 91 to be used for lubrication. This ensures that as much oil as possible in the oil sump 91 is used for lubrication, guaranteeing effective lubrication of the compressor while avoiding or reducing oil waste and minimizing oil filling volume, thus saving on oil costs.

[0077] Optionally, there are multiple first oil guide holes 111, and the multiple first oil guide holes 111 are arranged around the central axis of the flange body 10.

[0078] In this application, the flange body 10 includes a middle portion 101 and a side portion 102, with the side portion 102 surrounding the middle portion 101. The upper end face of the middle portion 101 and the upper end face of the side portion 102 are located on the same plane and together form the upper end face of the flange body 10. The lower end face of the middle portion 101 is located on the side of the lower end face of the side portion 102 that is away from the upper end face of the flange body 10. That is, the axial height of the middle portion 101 is greater than the axial height of the side portion 102.

[0079] Specifically, the first oil guide hole 111 is provided on the middle part 101, and the upper end and the lower end of the first oil guide hole 111 extend to the upper end face and the lower end face of the middle part 101, respectively; the second oil guide hole 112 is provided on the side part 102, and the upper end and the lower end of the second oil guide hole 112 extend to the upper end face and the lower end face of the side part 102, respectively.

[0080] Specifically, the oil storage space 951 is the space between the mounting part 95 and the side part 102.

[0081] Optionally, the oil reservoir 12 is provided on the side portion 102; the first channel 13 is provided on the side portion 102; and the exhaust channel 14 is provided on the side portion 102.

[0082] Optionally, the cross section of the first oil guide hole 111 perpendicular to its axial direction is circular or polygonal; for example, the cross section of the first oil guide hole 111 perpendicular to its axial direction is rectangular or rhomboid.

[0083] Optionally, the cross section of the second oil guide hole 112 perpendicular to its axial direction is circular or polygonal; for example, the cross section of the second oil guide hole 112 perpendicular to its axial direction is rectangular or rhomboid.

[0084] Specifically, the intermediate part 101 includes a first part and a second part that are distributed along the axial direction of the flange body 10 and connected to each other; the upper and lower end faces of the first part are flush with the upper and lower end faces of the side part 102, respectively, and the second part is a part that protrudes from the side part 102.

[0085] If the diameter of the first oil guide hole 111 is too large, it may reduce the strength of the second part. Therefore, under the premise of ensuring the strength of the second part, a few first oil guide holes 111 with larger diameters or multiple first oil guide holes 111 with smaller diameters can be opened to meet the oil delivery requirements and ensure the strength of the second part.

[0086] Optionally, from the upper end to the lower end of the first oil guide hole 111, the cross section of the first oil guide hole 111 perpendicular to its axial direction gradually increases to improve the oil conveying efficiency.

[0087] Optionally, the cross section of the first oil guide hole 111 parallel to its axial direction is trapezoidal, and the longer bottom side of the cross section of the first oil guide hole 111 parallel to its axial direction is located below the shorter bottom side.

[0088] Optionally, from the upper end to the lower end of the second oil guide hole 112, the cross section of the second oil guide hole 112 perpendicular to its axial direction gradually increases to improve the oil conveying efficiency.

[0089] Optionally, the cross section of the second oil guide hole 112 parallel to its axial direction is trapezoidal, and the longer base of the cross section of the second oil guide hole 112 parallel to its axial direction is located below the shorter base.

[0090] If the diameter of the upper end of the oil guide hole 11 is too large, it will result in the sealing surface between the upper end face of the flange body 10 and the roller 92 being too small, thereby increasing the risk of refrigerant leakage; therefore, the diameter of the upper end of the oil guide hole 11 should not be too large.

[0091] In this application, the flange body 10 is also provided with an oil return channel 15.

[0092] The present invention also provides a compressor, such as Figures 1 to 5 As shown, it includes the aforementioned lower flange assembly 100. Optionally, the compressor is a rotary compressor.

[0093] Specifically, the compressor also includes a motor 96, an oil sump 91, rollers 92, vanes 93, a cylinder 94, a mounting component 95, a crankshaft 97, an air inlet 981 located at the top of the compressor, a low-pressure chamber 982, an upper flange 99, a suction port 991, and an upper silencer 992.

[0094] When the compressor is running, low-pressure gas enters the low-pressure chamber 982 through the inlet 981, then enters the space between the upper silencer 992 and the upper flange 99 through the inlet 993 on the upper silencer 992, and then enters the compressor's suction chamber through the suction port 991 on the upper flange 99. The crankshaft 97 drives the roller 92 to rotate, and the low-pressure gas is discharged from the compression chamber after compression. The compressed gas in the compression chamber is discharged into the exhaust passage 14, then flows into the space between the mounting part 95 and the flange body 10, and then exits the compressor through the first passage 13, the second passage, the third passage 990 and the outlet 983 in sequence.

[0095] Oil carried in the gas flowing into the space between the mounting component 95 and the flange body 10 is deposited and collected on the mounting component 95 to form a high-pressure oil pool 952. The lower end of the capillary structure 20 in the second oil guide hole 112 is immersed in the high-pressure oil pool 952. Under capillary action, the oil in the high-pressure oil pool 952 moves along the capillary structure 20 in the second oil guide hole 112 to the upper end of the capillary structure 20, and then flows into the oil reservoir 12. As the compressor operates stably, the oil in the oil reservoir 12 is continuously transported to the gap between the upper end face of the flange body 10 and the lower end face of the roller 92, as well as the gap between the upper end face of the flange body 10 and the lower end face of the sliding plate 93. This not only solves the problem of liquid accumulation in the high-pressure cavity between the mounting component 95 and the flange body 10, but also achieves lubrication between the components.

[0096] When the compressor is stationary, the oil in the oil sump 91 is transported to the gap on the upper end face of the flange body 10 through the capillary structure 20 in the first oil guide hole 111; the oil reservoir 12 stores oil. At the moment the compressor starts, because there is a certain amount of oil in the gap on the upper end face of the flange body 10, and the oil in the oil reservoir 12 can flow into the gap on the upper end face of the flange body 10, contact friction due to lack of oil can be avoided at the moment the compressor starts.

[0097] Whether the compressor is stationary or running, the oil in the oil sump 91 can be transported to the gap on the upper end face of the flange body 10 through the capillary structure 20 in the first oil guide hole 111, so as to achieve uninterrupted lubrication.

[0098] In addition, the outer circumferential surface of the roller 92 is the high-pressure side compared to its inner circumferential surface. Therefore, by relying on the high and low pressure difference, it is convenient to transport the oil in the oil reservoir 12 to the gap between the upper end face of the flange body 10 and the lower end face of the roller 92, as well as the gap between the upper end face of the flange body 10 and the lower end face of the slide plate 93.

[0099] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0100] In the lower flange assembly 100 provided by the present invention, the lower flange assembly 100 includes a flange body 10, on which an oil guide hole 11 is provided, and the upper and lower ends of the oil guide hole 11 extend to the upper end face and the lower end face of the flange body 10, respectively; the lower flange assembly 100 also includes a capillary structure 20, which is disposed in the oil guide hole 11 and extends along the axial direction of the oil guide hole 11.

[0101] The lower end of the capillary structure 20 extends from the lower end of the oil guide hole 11 and into the oil storage structure located below the flange body 10, so that under capillary action, the oil in the oil storage structure moves from the lower end of the capillary structure 20 along the capillary structure 20 to the upper end of the capillary structure 20.

[0102] The upper end of the capillary structure 20 extends to the upper end of the oil guide hole 11; the oil moving to the upper end of the capillary structure 20 can flow into the gap on the upper end face of the flange body 10; in this way, good lubrication can be achieved between the flange body 10 and the roller 92, and between the flange body 10 and the sliding plate 93.

[0103] Using the lower flange assembly 100 of this application: 1. It solves the lubrication problem of the components, that is, it can reduce the amount of oil injected (i.e., the amount of oil injected) while ensuring lubrication conditions, thereby effectively reducing the overall oil discharge of the compressor; 2. It improves the problem of difficult oil pumping in low back pressure compressors; 3. It continuously provides oil to the gap on the upper end face of the flange body 10 to prevent contact friction from occurring.

[0104] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0105] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0106] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A compressor, characterized in that, Includes a lower flange assembly, the lower flange assembly comprising: Flange body (10), wherein an oil guide hole (11) is provided on the flange body (10), and the two ends of the oil guide hole (11) extend to the upper end face and the lower end face of the flange body (10) respectively. A capillary structure (20) is disposed within the oil guide hole (11) and extends axially along the oil guide hole (11); The lower end of the capillary structure (20) extends from the lower end of the oil guide hole (11) and extends into the oil storage structure located below the flange body (10), so that the oil in the oil storage structure moves from the lower end of the capillary structure (20) along the capillary structure (20) to the upper end of the capillary structure (20). The upper end of the capillary structure (20) extends to the upper end of the oil guide hole (11) so that the oil moving to the upper end of the capillary structure (20) flows into the gap on the upper end face of the flange body (10); the gap on the upper end face of the flange body (10) includes the gap between the upper end face of the flange body (10) and the lower end face of the roller (92) of the compressor, and the gap between the upper end face of the flange body (10) and the lower end face of the vane (93) of the compressor; The oil guide holes (11) are multiple, including a first oil guide hole (111) and a second oil guide hole (112); the oil storage structure includes an oil storage space (951), the mounting part (95) of the compressor is connected to the lower end face of the flange body (10), and the mounting part (95) and the flange body (10) form the oil storage space (951); an exhaust channel (14) is provided on the flange body (10), the upper end of the exhaust channel (14) is connected to the compression chamber of the compressor, and the lower end of the exhaust channel (14) is connected to the oil storage space (951), so that the compressed gas in the compression chamber flows into the oil storage space (951) through the exhaust channel (14) and flows into the oil storage space. The oil carried in the gas in the space (951) is deposited and converged on the mounting part (95) to form a high-pressure oil pool (952); the lower end of the capillary structure (20) in the second oil guide hole (112) is immersed in the high-pressure oil pool (952) so that the oil in the high-pressure oil pool (952) moves along the capillary structure (20) in the second oil guide hole (112) to the upper end of the capillary structure (20); the upper end face of the flange body (10) is recessed with an oil-holding groove (12), the oil-holding groove (12) is connected to the second oil guide hole (112) so that the oil at the upper end of the capillary structure (20) in the second oil guide hole (112) flows into the oil-holding groove (12) and then flows into the gap on the upper end face of the flange body (10).

2. The compressor according to claim 1, characterized in that, Each of the oil guide holes (11) is provided with a capillary structure (20); the oil storage structure includes: The lower end of the capillary structure (20) in the first oil guide hole (111) extends into the oil pool (91).

3. The compressor according to claim 2, characterized in that, The first oil guide hole (111) is at least one; and / or The second oil guide hole (112) is at least one.

4. The compressor according to claim 1, characterized in that, The lower flange assembly also includes a support portion (30) with a support channel, the support portion (30) being located below the flange body (10); the capillary structure (20) in the oil guide hole (11) passes through the support channel, the lower end of the capillary structure (20) extending from the lower end of the support channel to extend into the oil storage structure.

5. The compressor according to claim 1, characterized in that, The capillary structure (20) includes a long strip structure made of capillary tubes and / or capillary fibers, wherein the extension direction of the capillary tubes is the same as the extension direction of the capillary structure (20), and the extension direction of the long strip structure is the same as the extension direction of the capillary structure (20).

6. The compressor according to claim 2, characterized in that, The lower end of the capillary structure (20) within the first oil guide hole (111) extends into the bottom of the oil sump (91); and / or The first oil guide hole (111) is located close to the central axis of the flange body (10) relative to the outer periphery of the flange body (10).

7. The compressor according to claim 2, characterized in that, The flange body (10) includes a middle portion (101) and a side portion (102), the side portion (102) being disposed around the middle portion (101); the upper end face of the middle portion (101) and the upper end face of the side portion (102) are located on the same plane and together form the upper end face of the flange body (10); the lower end face of the middle portion (101) is located on the side of the lower end face of the side portion (102) away from the upper end face of the flange body (10). The first oil guide hole (111) is provided on the middle part (101), and the second oil guide hole (112) is provided on the side part (102).

8. The compressor according to claim 2, characterized in that, The flange body (10) is provided with a first channel (13), the two ends of the first channel (13) extend to the upper end face and the lower end face of the flange body (10) respectively; the lower end of the first channel (13) is connected to the oil storage space (951), and the upper end of the first channel (13) is connected to the air outlet (983) of the compressor, so that the compressed gas flowing into the oil storage space (951) passes through the first channel (13) and the air outlet (983) in sequence and is discharged.

Images