Oil return regulating mechanism and compressor

Abstract

This invention provides an oil return regulating mechanism and a compressor. The oil return regulating mechanism includes: an regulating housing, the interior of which has a flow channel, an oil inlet, and an oil outlet, both of which are connected to the flow channel; the oil inlet is used to connect to the oil outlet port of the compressor's oil return pipe; the oil outlet includes a central outlet and a side outlet, the flow cross-sectional area of ​​the side outlet being smaller than that of the oil outlet port; and a baffle, which is movably disposed within the flow channel in a direction parallel or the same as the distribution direction of the oil inlet and outlet, opposite to the central outlet and the oil outlet port, to block the flow path between the oil outlet port and the central outlet. By providing the oil return regulating mechanism, the problem of insufficient oil supply during high-frequency operation of compressors in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more specifically, to an oil return regulating mechanism and a compressor. Background Technology

[0002] The lubricating oil drawn up by the oil pump from the crankshaft of the scroll compressor is divided into two parts in the high-pressure chamber oil sump. One part enters the end face of the moving and stationary scroll plates for lubrication to ensure the normal operation of the compressor. The other part of the lubricating oil, after completing the lubrication of the crankshaft main bearing, returns to the bottom oil sump of the compressor through the oil return device, i.e., the oil return pipe, for circulation.

[0003] Traditional scroll compressors have a fixed oil return pipe diameter, and the oil return volume cannot be adjusted automatically. During high-frequency operation, the oil return volume is larger, while during low-frequency operation, it is smaller. When the compressor operates at high frequency, the amount of lubricating oil required between the moving and stationary scrolls increases. Although the oil supply from the crankshaft oil pump also increases accordingly, the high pressure chamber pressure is high at this time, and most of the oil returns to the oil sump through the oil return pipe, resulting in insufficient oil supply between the moving and stationary scrolls. Therefore, the increase in compressor frequency and the amount of oil supplied between the moving and stationary scrolls are not directly proportional, leading to insufficient oil and wear on both the moving and stationary scrolls.

[0004] On the other hand, due to the lack of an effective diversion device at the outlet of the oil return pipe, when the high-velocity lubricating oil impacts the surface of the oil sump, it will cause the lubricating oil to splash and result in oil-containing exhaust gas, which will increase the oil discharge rate of the compressor and affect the performance of the compressor. Summary of the Invention

[0005] The main objective of this invention is to provide an oil return regulating mechanism and a compressor to solve the problem of insufficient oil supply when the compressor is running at high frequency in the prior art.

[0006] To achieve the above objectives, according to one aspect of the present invention, a return oil regulating mechanism is provided, comprising: a regulating housing having a flow channel, an oil inlet, and an oil outlet inside the regulating housing, both the oil inlet and the oil outlet communicating with the flow channel; the oil inlet communicating with the oil outlet port of the compressor's return oil pipe; the oil outlet including a central outlet and a side outlet portion, the flow cross-sectional area of ​​the side outlet portion being smaller than the flow cross-sectional area of ​​the oil outlet port; and a baffle movably disposed within the flow channel in a direction parallel or the same as the distribution direction of the oil inlet and the oil outlet, the baffle being disposed opposite to the central outlet and opposite to the oil outlet port to block the flow path between the oil outlet port and the central outlet.

[0007] Furthermore, the oil return regulating mechanism also includes: a support section, which is disposed within the flow channel and has a central channel, an oil inlet, and an oil outlet. The oil inlet and the oil outlet are both connected to the central channel, and the oil outlet is connected to the central outlet; a telescopic component, which is telescopically disposed between the baffle and the regulating housing, so that the baffle is telescopically disposed relative to the regulating housing; the telescopic component is located on the side of the baffle away from the oil outlet, and the telescopic direction of the telescopic component is parallel to or the same as the distribution direction of the oil inlet and the oil outlet; the baffle is disposed opposite to the oil inlet, and the surface of the baffle is larger than the flow cross-section of the oil inlet.

[0008] Furthermore, the telescopic component is an elastic component, which is sleeved on the support part, and the end of the elastic component away from the oil drain port extends out of the support part and is connected to the baffle.

[0009] Furthermore, the telescopic component is a telescopic rod, with one end of the telescopic rod away from the oil drain port extending out of the support and connecting to the baffle; the telescopic rod is located on the outside of the support; or the telescopic rod is located on the inside of the central channel, with the inner wall of the oil inlet and the inner wall of the central channel spaced apart from the telescopic rod.

[0010] Furthermore, the side outlet section includes one or more side outlets. When there is only one side outlet, the side outlet is located on one side of the central outlet. When there are multiple side outlets, the multiple side outlets are arranged circumferentially around the central outlet.

[0011] Furthermore, the oil inlet includes a central inlet; or the oil inlet includes a central inlet and side inlets; wherein there are one or more side inlets, and when there is one side inlet, the side inlet is located on one side of the central inlet; when there are multiple side inlets, the multiple side inlets are arranged circumferentially around the central inlet.

[0012] Furthermore, the regulating housing includes a cylindrical body and two end plates located at both ends of the cylindrical body. The cylindrical cavity of the cylindrical body forms a flow channel, and the oil inlet and oil outlet are respectively provided on the two end plates; wherein, the end plate with the oil inlet is integrally formed with the cylindrical body.

[0013] Furthermore, the regulating housing has through holes for the supply and return oil pipes to pass through.

[0014] According to another aspect of the present invention, a compressor is provided, which includes an oil return pipe and the aforementioned oil return regulating mechanism.

[0015] Furthermore, one port of the return oil pipe forms its oil outlet port; or the oil outlet port of the return oil pipe includes a central outlet and a side port, wherein there are one or more side ports. When there is one side port, the side port is located on one side of the central outlet; when there are multiple side ports, the multiple side ports are arranged circumferentially around the central outlet.

[0016] According to the technical solution of this invention, the oil return regulating mechanism includes an regulating housing and a baffle. The regulating housing has a flow channel, an oil inlet, and an oil outlet, both of which are connected to the flow channel. The oil inlet is used to connect with the oil outlet port of the compressor's oil return pipe, so that the oil in the oil return pipe enters the flow channel through the oil outlet port and the oil inlet port. The oil outlet includes a central outlet and a side outlet, with the flow cross-sectional area of ​​the side outlet being smaller than that of the oil outlet port. The baffle is movably disposed within the flow channel in a direction parallel or the same as the distribution direction of the oil inlet and the oil outlet, meaning the distribution direction of the oil inlet and the oil outlet is necessarily a straight line. Since the extension direction of the flow channel is parallel or the same as the distribution direction of the oil inlet and the oil outlet, the extension direction of the flow channel is a straight line. The baffle is disposed opposite to the central outlet and opposite to the oil outlet port, meaning that along the distribution direction of the oil inlet and the oil outlet, the baffle is located between the oil outlet port and the central outlet to block the flow path between the oil outlet port and the central outlet.

[0017] Due to the impact of the return oil on the baffle, the baffle is movably set in a direction parallel or the same as the distribution direction of the oil inlet and outlet to control the opening and closing of the middle outlet, thereby controlling the amount of return oil. This ensures sufficient oil supply during high-frequency operation of the compressor, avoids the problem of oil shortage and wear between the moving scroll and the stationary scroll, and thus ensures the reliability of the compressor during high-frequency operation, solving the problem of insufficient oil supply during high-frequency operation of the compressor in the prior art.

[0018] In addition, when the compressor is running at high frequency and medium-low frequency, the return oil can be buffered by setting the return oil adjustment mechanism to reduce the return oil flow rate. By reducing the return oil flow rate, return oil splashing can be prevented, thereby avoiding the problem of high oil content in the exhaust gas caused by return oil splashing. This reduces the oil discharge rate of the compressor and ensures the performance of the compressor. That is, the return oil adjustment mechanism of this application solves the problem of increased oil content in the compressor exhaust gas caused by the impact and splashing of return oil on the bottom oil sump surface in the prior art. Attached Figure Description

[0019] 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:

[0020] Figure 1 A longitudinal sectional view of the oil return regulating mechanism and oil return pipe according to the present invention is shown; wherein the shielding part is a second structural form;

[0021] Figure 2 A schematic diagram of the external structure of the return oil regulating mechanism and return oil pipe according to the present invention is shown;

[0022] Figure 3A longitudinal sectional view of a compressor according to the present invention is shown; wherein the compressor operates at a medium to low frequency;

[0023] Figure 4 It shows Figure 3 An enlarged view of point A of the compressor, showing the oil return circuit diagram within the oil return regulating mechanism when the compressor is running at medium and low frequencies;

[0024] Figure 5 A longitudinal sectional view of a compressor according to the present invention is shown; wherein the compressor operates at a high frequency;

[0025] Figure 6 It shows Figure 5 An enlarged view of section B of the compressor is shown, along with a diagram of the oil return path within the oil return regulating mechanism when the compressor is operating at high frequency.

[0026] Figure 7 An exploded view of the oil return regulating mechanism and oil return pipe of the compressor according to the present invention is shown; wherein, the oil outlet port of the oil return pipe is a first configuration and the shielding part is a second configuration.

[0027] Figure 8 It shows Figure 7 A schematic diagram of the oil return pipe of the compressor in the image;

[0028] Figure 9 It shows Figure 8 A side view of the oil return pipe of the compressor in the middle;

[0029] Figure 10 An exploded view of the oil return regulating mechanism and oil return pipe of the compressor according to the present invention is shown; wherein, the oil outlet port of the oil return pipe is of the second configuration type, and the shielding part is of the first configuration type;

[0030] Figure 11 It shows Figure 10 A schematic diagram of the oil return pipe of the compressor in the image;

[0031] Figure 12 It shows Figure 11 A side view of the oil return pipe of the compressor in the middle;

[0032] Figure 13 A schematic diagram of the compressor sleeve according to the present invention is shown;

[0033] Figure 14 It shows Figure 13 A top view of the compressor sleeve;

[0034] Figure 15 A schematic diagram of the base of the compressor according to the present invention is shown; wherein the oil inlet adopts a first configuration.

[0035] Figure 16 It shows Figure 15 A top view of the compressor's base;

[0036] Figure 17 A schematic diagram of the base of the compressor according to the present invention is shown; wherein the oil inlet adopts a second configuration.

[0037] Figure 18 It shows Figure 17 A top view of the compressor's base.

[0038] The above figures include the following reference numerals:

[0039] 1. Oil return regulating mechanism; 2. Compressor; 3. Sleeve; 4. Base;

[0040] 10. Adjusting housing; 101. Cylinder; 102. End plate; 1021. First end plate; 1022. Second end plate; 11. Flow channel; 12. Through hole; 13. Oil outlet; 131. Central outlet; 132. Side outlet; 1321. Side outlet; 20. Support; 21. Central channel; 22. Oil inlet; 221. Central inlet; 222. Side inlet; 23. Oil drain; 30. Elastic element; 40. Blocking part; 41. Baffle; 42. Side panel;

[0041] 60. Oil return pipe; 61. Oil outlet port; 611. Intermediate outlet; 612. Side port; 63. Third end plate; 71. Crankshaft; 711. Crankshaft main bearing; 72. Oil pump; 73. Moving scroll plate; 74. Stationary scroll plate; 75. Oil sump; 76. Motor; 77. Upper bracket; 771. High pressure chamber; 78. Lower bracket; 79. Housing. Detailed Implementation

[0042] 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.

[0043] 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.

[0044] 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.

[0045] This invention provides a return oil regulating mechanism 1, please refer to... Figures 1 to 18 The oil return regulating mechanism 1 includes an regulating housing 10 and a baffle 41. The regulating housing 10 has a flow channel 11, an oil inlet, and an oil outlet 13 inside, both of which are connected to the flow channel 11. The oil inlet is used to connect to the oil outlet port 61 of the oil return pipe 60 of the compressor 2, so that the oil in the oil return pipe 60 enters the flow channel 11 through the oil outlet port 61 and the oil inlet. The oil outlet 13 includes a central outlet 131 and a side outlet 132, the flow cross-sectional area of ​​which is smaller than that of the oil outlet port 61. The baffle 41 is movably arranged in the flow channel 11 in a direction parallel or the same as the distribution direction of the oil inlet and the oil outlet 13, that is, the distribution direction of the oil inlet and the oil outlet 13 must be a straight line. Since the extension direction of the flow channel 11 is parallel or the same as the distribution direction of the oil inlet and the oil outlet 13, the extension direction of the flow channel 11 is a straight line. The baffle 41 is disposed opposite to the middle outlet 131 and opposite to the oil outlet 61. That is, along the distribution direction of the oil inlet and the oil outlet 13, the baffle 41 is located between the oil outlet 61 and the middle outlet 131 to block the flow path between the oil outlet 61 and the middle outlet 131.

[0046] It should be noted that when the compressor 2 is working, the lubricating oil drawn up by the crankshaft 71 through the oil pump 72 is divided into two parts in the high-pressure chamber 771. One part enters between the moving scroll 73 and the stationary scroll 74 for lubrication to ensure the normal operation of the compressor 2; the other part of the lubricating oil, after completing the lubrication of the crankshaft main bearing 711, returns to the oil sump 75 at the bottom of the compressor 2 through the oil return pipe 60 for circulation.

[0047] It should be noted that, as Figure 3 and Figure 5 As shown, the high-pressure chamber 771 includes a cavity between the upper support 77 and the moving scroll plate 73 and a cavity between the upper support 77 and the crankshaft main bearing 711.

[0048] In the specific implementation process, such as Figure 1 , Figure 3 and Figure 4As shown, when compressor 2 operates at low to medium frequency, its internal circulating oil volume is small, and the amount of lubricating oil required between the moving scroll 73 and the stationary scroll 74, as well as the amount of return oil in the return oil pipe 60, are both small. After the return oil in the return oil pipe 60 flows from the oil outlet 61 into the flow channel 11, the return oil first impacts the baffle 41, causing the baffle 41 to move towards the oil outlet 13. Furthermore, because the impact force of the return oil on the baffle 41 is small, there is still a certain distance between the baffle 41 and the middle outlet 131 along the distribution direction of the oil inlet and outlet 13; that is, the baffle 41 does not block the middle outlet 131. When both the central outlet 131 and the side outlet 132 are open, a portion of the return oil in the flow channel 11 flows out from the central outlet 131, and the other portion flows out from the side outlet 132. Furthermore, the arrangement of the baffle 41 and the oil outlet 13, including the central outlet 131 and the side outlet 132, will buffer the return oil to a certain extent. Therefore, the main purpose of the return oil regulating mechanism 1 at this time is to divert and buffer the return oil to reduce the return oil flow rate. By reducing the return oil flow rate, return oil splashing can be prevented, thereby avoiding the problem of excessive oil discharge rate caused by return oil splashing.

[0049] It should be noted that the amount of lubricating oil contained in the gas when the compressor discharges is called the oil discharge rate; generally, it is desirable for the amount of lubricating oil contained in the gas to be as small as possible, that is, the lower the oil discharge rate.

[0050] like Figure 1 , Figure 5 and Figure 6As shown, when compressor 2 operates at high frequency, its internal circulating oil volume is large, and the amount of lubricating oil required between the moving scroll 73 and the stationary scroll 74, as well as the amount of return oil in the return oil pipe 60, are both large. After the return oil in the return oil pipe 60 flows into the flow channel 11 from the oil outlet 61, the return oil first impacts the baffle 41, causing the baffle 41 to move towards the oil outlet 13. Due to the large impact force of the return oil on the baffle 41, the baffle 41 can abut against the inner side of the middle outlet 131, that is, the baffle 41 blocks the middle outlet 131, thus blocking the middle outlet 131. At this time, the middle outlet 131 is in a closed state, and the middle outlet 131 can only pass through with a very small amount of oil or no oil at all. By means of the baffle 41, the flow path between the oil outlet port 61 and the middle outlet 131 is blocked; since the side outlet 132 is in the open state, the return oil in the flow channel 11 can only flow out from the side outlet 132; since the flow cross-sectional area of ​​the side outlet 132 is smaller than the flow cross-sectional area of ​​the oil outlet port 61, the return oil resistance at the oil outlet port 61 increases, resulting in a smaller return oil volume, and at this time, the oil sump pressure of the high pressure chamber 771 of the compressor 2 increases, thereby forcing more oil to flow into the space between the moving scroll plate 73 and the stationary scroll plate 74 for lubrication; that is, the return oil regulating mechanism 1 of this application solves the problem of insufficient oil and wear between the moving and stationary scroll plates caused by excessive return oil during high-frequency operation of the compressor in the prior art.

[0051] As can be seen, due to the impact of the return oil on the baffle 41, the baffle 41 is movably arranged in a direction parallel or the same as the distribution direction of the oil inlet and outlet 13 to control the opening and closing of the middle outlet 131, thereby controlling the amount of return oil. This ensures sufficient oil supply during high-frequency operation of the compressor 2, avoids the problem of oil shortage and wear between the moving scroll plate 73 and the stationary scroll plate 74, and thus ensures the reliability of the compressor 2 during high-frequency operation, solving the problem of insufficient oil supply during high-frequency operation of the compressor in the prior art.

[0052] In addition, when the compressor 2 is running at high frequency and medium-low frequency, the return oil can be buffered by setting the return oil regulating mechanism 1 to reduce the return oil flow rate. By reducing the return oil flow rate, return oil splashing can be prevented, thereby avoiding the problem of high oil content in the exhaust gas caused by return oil splashing. This reduces the oil discharge rate of the compressor 2 and ensures the performance of the compressor 2. That is, the return oil regulating mechanism 1 of this application solves the problem in the prior art that the return oil impacts and splashes on the bottom oil sump surface, causing the oil content in the compressor exhaust gas to increase.

[0053] It should be noted that the flow cross-section of the oil outlet port 61 refers to the cross-section of the oil outlet port 61 perpendicular to the flow direction of the fluid flowing through the oil outlet port 61; the flow cross-section of the side outlet 132 refers to the cross-section of the side outlet 132 perpendicular to the flow direction of the fluid flowing through the side outlet 132; and the flow cross-section of the central outlet 131 refers to the cross-section of the central outlet 131 perpendicular to the flow direction of the fluid flowing through the central outlet 131. Different control effects on the return oil flow rate and velocity can be achieved by changing the area of ​​the flow cross-section of the oil outlet port 61, and / or the area of ​​the flow cross-section of the side outlet 132, and / or the area of ​​the flow cross-section of the central outlet 131, thereby achieving different effects in reducing return oil splash.

[0054] Optionally, the baffle 41 is movably arranged in the vertical direction, that is, the oil inlet and oil outlet 13 are distributed in the vertical direction.

[0055] Optionally, the central outlet 131 and the side outlet 132 are spaced apart.

[0056] Optionally, such as Figure 1 , Figure 13 and Figure 14 As shown, the return oil pipe 60 passes through the regulating housing 10 so that the oil outlet port 61 is connected to the oil inlet port. Specifically, the regulating housing 10 is provided with a through hole 12 for the return oil pipe 60 to pass through.

[0057] In this embodiment, the oil return regulating mechanism 1 further includes a support 20 and a telescopic member. Both the support 20 and the telescopic member are disposed within the flow channel 11. The support 20 has a central channel 21, an oil inlet 22, and an oil outlet 23. The oil inlet 22 and the oil outlet 23 are both connected to the central channel 21, and the oil outlet 23 is connected to the central outlet 131. The telescopic member is telescopically disposed between the baffle 41 and the regulating housing 10. The telescopic member is connected to both the baffle 41 and the regulating housing 10, so that the baffle 41 is telescopically disposed relative to the regulating housing 10. The telescopic member is located on the side of the baffle 41 away from the oil outlet 61, and the telescopic direction of the telescopic member is parallel or the same as the distribution direction of the oil inlet 22 and the oil outlet 23. The baffle 41 is disposed opposite to the oil inlet 22, and the surface of the baffle 41 is larger than the flow cross-section of the oil inlet 22, so that when the baffle 41 abuts against the support 20, the baffle 41 blocks the flow path between the oil outlet 61 and the oil inlet 22.

[0058] It should be noted that the "plate surface of baffle 41" mentioned above refers to the plate surface of baffle 41 facing the oil inlet 22, and the plate surface of baffle 41 mentioned above is used to contact the support part 20; the flow section of oil inlet 22 refers to the section of oil inlet 22 that is perpendicular to the flow direction when the fluid flows through oil inlet 22.

[0059] In specific implementation, when compressor 2 operates at low to medium frequency, such as Figure 1 , Figure 3 and Figure 4 As shown, after the return oil in the return pipe 60 flows into the flow channel 11 from the oil outlet 61, the return oil first impacts the baffle 41, causing the telescopic component to retract, so that the baffle 41 moves towards the support part 20. Because the impact force of the return oil on the baffle 41 is relatively small, there is still a certain distance between the baffle 41 and the support part 20 along the telescopic component's extension direction; that is, there is still a certain distance between the baffle 41 and the oil inlet 22 along the telescopic component's extension direction. The baffle 41 does not block the oil inlet 22, so the oil inlet 22 is in the open state. The central channel 21 and the oil drain 23 are connected to the central outlet 131. At this time, both the central outlet 131 and the side outlet 132 are open. Therefore, a portion of the return oil in the flow channel 11 enters from the oil inlet 22 and flows out after passing through the central channel 21, the oil drain 23 and the central outlet 131. The other portion of the return oil in the flow channel 11 flows out from the side outlet 132. Furthermore, the arrangement of the baffle 41, the support 20, and the arrangement of the oil outlet 13, including the central outlet 131 and the side outlet 132, will cause multiple buffering of the return oil.

[0060] When compressor 2 operates at a high frequency, such as Figure 1 , Figure 5 and Figure 6 As shown, after the return oil in the return pipe 60 flows into the flow channel 11 from the oil outlet 61, the return oil first impacts the baffle 41, causing the telescopic component to retract, so that the baffle 41 moves towards the support part 20. Due to the large impact force of the return oil on the baffle 41, the baffle 41 can abut against the support part 20. Since the plate surface of the baffle 41 is larger than the flow cross section of the oil inlet 22, the baffle 41 blocks the oil inlet 22, thus blocking the oil inlet 22. At this time, the oil inlet 22 is in a closed state, that is, the middle outlet 131 is in a closed state. The baffle 41 blocks the flow path between the oil outlet 61 and the oil inlet 22, thereby achieving the effect that the baffle 41 blocks the flow path between the oil outlet 61 and the middle outlet 131. Since the side outlet 132 is in an open state, the return oil in the flow channel 11 can only flow out from the side outlet 132.

[0061] Specifically, the surface area of ​​the baffle 41 is larger than the flow cross-sectional area of ​​the oil inlet 22, so that when the baffle 41 abuts against the support 20, the baffle 41 blocks the flow path between the oil outlet 61 and the oil inlet 22.

[0062] Optionally, the telescopic member extends and retracts in the vertical direction, and the baffle 41 is located at the upper end of the telescopic member.

[0063] Optionally, the oil drain port 23 is connected to the central outlet 131.

[0064] In this embodiment, the first structural form of the telescopic member is as follows: the telescopic member is an elastic member 30, which is sleeved on the support portion 20, that is, the elastic member 30 is sleeved on the outside of the support portion 20; the telescopic direction of the elastic member 30 is parallel or the same as the distribution direction of the oil inlet 22 and the oil outlet 23; the end of the elastic member 30 away from the oil outlet 23 extends out of the support portion 20 and is connected to the baffle 41. When the return oil impacts the baffle 41, the elastic member 30 is compressed, so that the baffle 41 moves towards the support portion 20.

[0065] Specifically, the elastic element 30 is a spring.

[0066] It should be noted that the elastic force of the elastic element 30 can be adjusted according to the frequency of the compressor 2 and the diameter of the oil return pipe 60 to ensure that the elastic element 30 can make corresponding and effective movements when the compressor 2 changes at different frequency ranges, so as to effectively control the opening and closing of the middle outlet 131, thereby realizing the regulation of the oil return and oil supply, solving the problem of insufficient oil supply when the compressor is running at high frequency, and improving the operational reliability of the compressor 2.

[0067] In this embodiment, the second structural form of the telescopic member is: the telescopic member is a telescopic rod, and the end of the telescopic rod away from the oil drain port 23 extends out of the support part 20 and is connected to the baffle 41.

[0068] Specifically, the telescopic rod is located on the outside of the support 20; or the telescopic rod is located on the inside of the central channel 21, with the inner wall of the oil inlet 22 and the inner wall of the central channel 21 being spaced apart from the telescopic rod.

[0069] In this embodiment, the side outlet 132 includes one or more side outlets 1321. When there is only one side outlet 1321, it is located on one side of the central outlet 131, that is, the side outlet 1321 is located circumferentially outside the central outlet 131. When there are multiple side outlets 1321, they are arranged circumferentially around the central outlet 131. Providing multiple side outlets 1321 is beneficial for diverting and buffering the return oil.

[0070] Specifically, when the side outlet portion 132 includes one side outlet 1321, the flow cross-sectional area of ​​the side outlet portion 132 refers to the flow cross-sectional area of ​​the side outlet 1321; when the side outlet portion 132 includes multiple side outlets 1321, the flow cross-sectional area of ​​the side outlet portion 132 refers to the sum of the flow cross-sectional areas of the multiple side outlets 1321; wherein, the flow cross-section of the side outlet 1321 refers to the cross-section of the side outlet 1321 perpendicular to the flow direction when the fluid flows through the side outlet 1321.

[0071] Specifically, the size of the flow cross-sectional area of ​​the side outlet 132 can be controlled and changed by controlling and changing the number of side outlets 1321 and the flow cross-sectional shape of each side outlet 1321.

[0072] In this embodiment, the first configuration of the oil inlet 22 is as follows: Figure 15 and Figure 16 As shown, the oil inlet 22 includes a central inlet 221 and side inlets 222; wherein, there are one or more side inlets 222. When there is only one side inlet 222, it is located on one side of the central inlet 221, that is, the side inlet 222 is located circumferentially outside the central inlet 221; when there are multiple side inlets 222, they are arranged circumferentially around the central inlet 221. Providing multiple side inlets 222 is beneficial for diverting and buffering return oil. Alternatively, a second configuration of the oil inlet 22 is as follows: Figure 17 and Figure 18 As shown, the oil inlet 22 only includes the central inlet 221.

[0073] Specifically, when the oil inlet 22 includes a side inlet 222, the flow cross-sectional area of ​​the oil inlet 22 refers to the sum of the flow cross-sectional area of ​​the side inlet 222 and the flow cross-sectional area of ​​the central inlet 221; when the oil inlet 22 includes multiple side inlets 222, the flow cross-sectional area of ​​the oil inlet 22 refers to the sum of the flow cross-sectional area of ​​the central inlet 221 and the flow cross-sectional areas of the multiple side inlets 222; wherein, the flow cross-section of the side inlet 222 refers to the cross-section of the side inlet 222 perpendicular to the flow direction when the fluid flows through the side inlet 222, and the flow cross-section of the central inlet 221 refers to the cross-section of the central inlet 221 perpendicular to the flow direction when the fluid flows through the central inlet 221.

[0074] Specifically, the size of the flow cross-sectional area of ​​the oil inlet 22 can be controlled and changed by controlling and changing the number of side inlets 222, the flow cross-sectional shape of each side inlet 222, and the flow cross-sectional shape of the central inlet 221.

[0075] In this embodiment, the regulating housing 10 includes a cylindrical body 101 and two end plates 102 located at both ends of the cylindrical body 101. The cylindrical cavity of the cylindrical body 101 forms a flow channel 11, and the oil inlet and oil outlet 13 are respectively provided on the two end plates 102. The end plate 102 with the oil inlet is integrally formed with the cylindrical body 101.

[0076] Specifically, the two end plates 102 are a first end plate 1021 and a second end plate 1022, respectively, and the oil inlet and oil outlet 13 are respectively disposed on the first end plate 1021 and the second end plate 1022; for example Figure 13 and Figure 14As shown, the first end plate 1021 and the cylinder 101 are integrally formed to form the sleeve 3; that is, the sleeve 3 includes the integrally formed first end plate 1021 and the cylinder 101.

[0077] Specifically, such as Figures 15 to 18 As shown, the second end plate 1022 and the support part 20 are integrally formed to form the base 4; that is, the base 4 includes the integrally formed second end plate 1022 and the support part 20.

[0078] In this embodiment, as Figure 1 As shown, a side panel 42 can also be provided on the baffle 41. The side panel 42 is formed by extending from the outer peripheral edge of the baffle 41 in a direction perpendicular to the surface of the baffle 41 and in a direction away from the baffle 41. That is, the side panel 42 has a cylindrical structure. The side panel 42 and the baffle 41 together form the shielding part 40. The side panel 42 is located outside the elastic member 30, and the side panel 42 is spaced apart from the elastic member 30. The axial direction of the side panel 42 is parallel to the extension and contraction direction of the elastic member 30. In this way, when the baffle 41 abuts against the support part 20, the side panel 42 can prevent the return oil from entering the oil inlet 22 from the gap between the baffle 41 and the support part 20.

[0079] In other words, the first structural form of the shielding part 40 is as follows: Figure 10 As shown, the shielding part 40 only includes the baffle 41; the second structural form of the shielding part 40 is as follows: Figure 1 and Figure 7 As shown, the shielding part 40 includes a side panel 42 and a baffle 41.

[0080] The present invention also provides a compressor 2, such as Figures 1 to 18 As shown, it includes a return oil pipe 60 and the aforementioned return oil regulating mechanism 1.

[0081] Optionally, the compressor 2 in this application is a scroll compressor.

[0082] In this embodiment, the first configuration of the oil outlet port 61 is as follows: Figures 7 to 9 As shown, the oil outlet port 61 of the return oil pipe 60 includes a central outlet 611 and a side port 612. There can be one or more side ports 612. When there is only one side port 612, it is located on one side of the central outlet 611, that is, on the circumferential outer side of the central outlet 611. When there are multiple side ports 612, they are arranged circumferentially around the central outlet 611. Setting the oil outlet port 61 in the form of a central outlet 611 and a side port 612 facilitates the diversion and buffering of the return oil. Alternatively, a second configuration of the oil outlet port 61 is as follows: Figures 10 to 12 As shown, one port of the return oil pipe 60 forms its oil outlet port 61.

[0083] Specifically, when one port of the return oil pipe 60 forms its outlet port 61, the flow cross-sectional area of ​​the outlet port 61 refers to the flow cross-sectional area of ​​the port, and the flow cross-section of the port refers to the cross-section of the port perpendicular to the flow direction when the fluid flows through the port. When the oil outlet port 61 includes an intermediate outlet 611 and a side port 612, the return oil in the return oil pipe 60 flows into the flow channel 11 from the intermediate outlet 611 and the side port 612. At this time, the flow cross-sectional area of ​​the oil outlet port 61 refers to the sum of the flow cross-sectional area of ​​the intermediate outlet 611 and the flow cross-sectional area of ​​the side port 612. When the oil outlet port 61 includes an intermediate outlet 611 and multiple side ports 612, the return oil in the return oil pipe 60 flows into the flow channel 11 from the intermediate outlet 611 and the multiple side ports 612. At this time, the flow cross-sectional area of ​​the oil outlet port 61 refers to the sum of the flow cross-sectional area of ​​the intermediate outlet 611 and the flow cross-sectional area of ​​the multiple side ports 612. Among them, the flow cross-section of the intermediate outlet 611 refers to the cross-section of the intermediate outlet 611 perpendicular to the flow direction when the fluid flows through the intermediate outlet 611, and the flow cross-section of the side port 612 refers to the cross-section of the side port 612 perpendicular to the flow direction when the fluid flows through the side port 612.

[0084] Specifically, the size of the flow cross-sectional area of ​​the oil outlet port 61 can be controlled and changed by controlling and changing the number of side ports 612, the flow cross-sectional shape of each side port 612, and the flow cross-sectional shape of the intermediate outlet 611.

[0085] In the specific implementation process, by making the oil outlet 61 include a middle outlet 611 and one or more side outlets 612, the first diversion buffering effect of the return oil is achieved; the support part 20 is set to achieve the second diversion buffering effect of the return oil; by making the oil outlet 13 include a middle outlet 131 and a side outlet part 132, and the side outlet part 132 includes one or more side outlets 1321, the third diversion buffering effect of the return oil is achieved, thereby effectively reducing the return oil impact and avoiding the problem of excessive oil discharge rate of the compressor due to the return oil impact.

[0086] Specifically, when the oil outlet port 61 includes an intermediate outlet 611 and a side outlet 612, the oil outlet end of the return oil pipe 60 is provided with a third end plate 63, and both the intermediate outlet 611 and the side outlet 612 are provided on the third end plate 63.

[0087] Specifically, the compressor 2 also includes a crankshaft 71, a crankshaft main bearing 711, an oil pump 72, a moving scroll 73, a stationary scroll 74, an upper bracket 77, a lower bracket 78, and a housing 79. The bottom of the housing 79 has an oil sump 75, and the oil outlet of the oil return pipe 60 extends into the cavity of the oil sump 75, that is, the oil return regulating mechanism 1 is located in the cavity of the oil sump 75.

[0088] Specifically, the compressor 2 also includes a motor 76 that drives the crankshaft 71 to rotate.

[0089] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0090] In the oil return regulating mechanism 1 provided by the present invention, the oil return regulating mechanism 1 includes an regulating housing 10 and a baffle 41. The interior of the regulating housing 10 has a flow channel 11, an oil inlet, and an oil outlet 13, both of which are connected to the flow channel 11. The oil inlet is used to connect with the oil outlet port 61 of the oil return pipe 60 of the compressor 2, so that the oil in the oil return pipe 60 enters the flow channel 11 through the oil outlet port 61 and the oil inlet. The oil outlet 13 includes a central outlet 131 and a side outlet 132, the flow cross-sectional area of ​​which is smaller than that of the oil outlet port 61. The baffle 41 is movably disposed in the flow channel 11 in a direction parallel or the same as the distribution direction of the oil inlet and the oil outlet 13, that is, the distribution direction of the oil inlet and the oil outlet 13 is necessarily a straight line. Since the extension direction of the flow channel 11 is parallel or the same as the distribution direction of the oil inlet and the oil outlet 13, the extension direction of the flow channel 11 is a straight line. The baffle 41 is disposed opposite to the middle outlet 131 and opposite to the oil outlet 61. That is, along the distribution direction of the oil inlet and the oil outlet 13, the baffle 41 is located between the oil outlet 61 and the middle outlet 131 to block the flow path between the oil outlet 61 and the middle outlet 131.

[0091] Due to the impact of the return oil on the baffle 41, the baffle 41 is movably arranged in a direction parallel or the same as the distribution direction of the oil inlet and outlet 13 to control the opening and closing of the middle outlet 131, thereby controlling the amount of return oil. This ensures sufficient oil supply during high-frequency operation of the compressor 2, avoids the problem of oil shortage and wear between the moving scroll plate 73 and the stationary scroll plate 74, and thus ensures the reliability of the compressor 2 during high-frequency operation, solving the problem of insufficient oil supply during high-frequency operation of the compressor in the prior art.

[0092] In addition, when the compressor 2 is running at high frequency and medium-low frequency, the return oil can be buffered by setting the return oil regulating mechanism 1 to reduce the return oil flow rate. By reducing the return oil flow rate, return oil splashing can be prevented, thereby avoiding the problem of high oil content in the exhaust gas caused by return oil splashing. This reduces the oil discharge rate of the compressor 2 and ensures the performance of the compressor 2. That is, the return oil regulating mechanism 1 of this application solves the problem in the prior art that the return oil impacts and splashes on the bottom oil sump surface, causing the oil content in the compressor exhaust gas to increase.

[0093] 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.

[0094] 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.

[0095] 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 return oil regulating mechanism, characterized in that, include: An adjusting housing (10) has an internal flow channel (11), an oil inlet, and an oil outlet (13). The oil inlet and the oil outlet (13) are both connected to the flow channel (11). The oil inlet is used to connect to the oil outlet port (61) of the compressor's return oil pipe (60). The oil outlet (13) includes a central outlet (131) and a side outlet (132). The flow cross-sectional area of ​​the side outlet (132) is smaller than that of the oil outlet port (61). The side outlet (132) includes one or more side outlets (1321). When there is one side outlet (1321), the side outlet (1321) is located on one side of the central outlet (131). When there are multiple side outlets (1321), the multiple side outlets (1321) are arranged circumferentially around the central outlet (131). A baffle (41) is movably disposed in the flow channel (11) in a direction parallel or the same as the distribution direction of the oil inlet and the oil outlet (13). The baffle (41) is disposed opposite to the middle outlet (131) and opposite to the oil outlet port (61) to block the flow path between the oil outlet port (61) and the middle outlet (131). A support part (20) is disposed in the flow channel (11). The support part (20) has a central channel (21), an oil inlet (22) and an oil outlet (23). The oil inlet (22) and the oil outlet (23) are both connected to the central channel (21), and the oil outlet (23) is connected to the central outlet (131). A telescopic component is provided between the baffle (41) and the adjusting housing (10) so that the baffle (41) is telescopically disposed relative to the adjusting housing (10); the telescopic component is located on the side of the baffle (41) away from the oil outlet port (61), and the telescopic direction of the telescopic component is parallel or the same as the distribution direction of the oil inlet (22) and the oil outlet (23); the baffle (41) is disposed opposite to the oil inlet (22), and the plate surface of the baffle (41) is larger than the flow cross section of the oil inlet (22); The regulating housing (10) includes a cylindrical body (101) and two end plates (102) located at both ends of the cylindrical body (101). The cylindrical cavity of the cylindrical body (101) forms the flow channel (11). The oil inlet and the oil outlet (13) are respectively provided on the two end plates (102). The end plate (102) with the oil inlet is integrally formed with the cylindrical body (101). The support part (20) is an axially extending hollow cylindrical structure, and the central channel (21) is formed inside it.

2. The oil return regulating mechanism according to claim 1, characterized in that, The telescopic component is an elastic component (30), which is sleeved on the support part (20). One end of the elastic component (30) away from the oil drain port (23) extends out of the support part (20) and is connected to the baffle (41).

3. The oil return regulating mechanism according to claim 1, characterized in that, The telescopic component is a telescopic rod, and one end of the telescopic rod away from the oil drain port (23) extends out of the support part (20) and is connected to the baffle (41); The telescopic rod is located outside the support (20); or The telescopic rod is located inside the central channel (21), and the inner wall of the oil inlet (22) and the inner wall of the central channel (21) are spaced apart from the telescopic rod.

4. The oil return regulating mechanism according to claim 1, characterized in that, The oil inlet (22) includes a central inlet (221); or The oil inlet (22) includes a central inlet (221) and a side inlet (222); wherein there are one or more side inlets (222). When there is one side inlet (222), the side inlet (222) is located on one side of the central inlet (221); when there are multiple side inlets (222), the multiple side inlets (222) are arranged circumferentially around the central inlet (221).

5. The oil return regulating mechanism according to claim 1, characterized in that, The regulating housing (10) has a through hole (12) for the return oil pipe (60) to pass through.

6. A compressor, characterized in that, It includes a return oil pipe (60) and a return oil regulating mechanism according to any one of claims 1 to 5.

7. The compressor according to claim 6, characterized in that, One port of the return oil pipe (60) forms its outlet port (61); or The oil outlet (61) of the return oil pipe (60) includes a middle outlet (611) and a side port (612). There are one or more side ports (612). When there is one side port (612), the side port (612) is located on one side of the middle outlet (611). When there are multiple side ports (612), the multiple side ports (612) are arranged circumferentially around the middle outlet (611).

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