Compressor oil pumping mechanism, compressor and method

Abstract

The application provides a compressor oil pumping mechanism, a compressor and a method, relates to the technical field of compressors, and aims to solve the problems of collision noise and poor reliability of a spiral oil suction pipe in operation, establish a connection relationship between an oil suction pipe and an oil suction pipe core, make the oil suction pipe, the oil suction pipe core and spiral blades rotate together to realize extraction of lubricating oil, solve the problems of collision and abnormal sound caused by relative movement of the oil suction pipe and the oil suction pipe core, and enable the compressor oil pumping mechanism to operate smoothly.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, specifically to a compressor oil pump mechanism, a compressor, and a method thereof. Background Technology

[0002] When the refrigeration compressor is working, its oil pumping mechanism is driven to rotate at high speed. The oil pumping mechanism draws refrigeration oil from the oil sump in the lower casing of the compressor, realizing the process of "oil suction - oil pumping - oil supply - oil spraying" from bottom to top. The refrigeration oil is delivered to the friction pairs of various moving parts of the compressor. When the compressor is working, it reduces the friction of the friction pairs and removes frictional heat, playing functions such as lubrication, sealing and noise reduction, ensuring the normal operation and long-term operation of the compressor.

[0003] When a compressor uses a spiral suction pipe design, the movement relationship between the suction pipe core and the suction pipe is relative. In addition, the gap between the two is small and the suction pipe core is a flexible connection. When the suction pipe rotates at high speed, it will collide with the suction pipe core, resulting in abnormal noise and even reliability issues. Currently, the spiral suction pipe has a linear structure, resulting in a small amount of oil. The vane-type suction pipe has a large amount of oil, but it requires a high speed and has a slow oil delivery. The slow oil delivery leads to poor lubrication and poses a reliability risk. At the same time, it cannot meet the oil suction and lubrication requirements of variable frequency compressors under low speed conditions. Summary of the Invention

[0004] The purpose of this invention is to address the deficiencies of existing technologies by providing a compressor oil pumping mechanism, a compressor, and a method. This invention establishes a connection between the oil suction pipe and the oil suction pipe core, enabling the oil suction pipe, the oil suction pipe core, and the spiral blades to rotate together to extract lubricating oil. This solves the problems of collision and abnormal noise caused by the relative movement of the oil suction pipe and the oil suction pipe core, and allows the compressor oil pumping mechanism to operate smoothly.

[0005] The first objective of this invention is to provide a compressor oil pumping mechanism, which adopts the following solution:

[0006] It includes an oil suction tube core and an oil suction tube sleeved outside the oil suction tube core. The oil suction tube core is connected to the oil suction tube via a connector. A spiral blade is installed in the annular area between the oil suction tube and the oil suction tube core. The spiral blade extends along the axial direction of the oil suction tube to both ends of the oil suction tube. The spiral blade, the oil suction tube, and the oil suction tube core can rotate together around the axis of the oil suction tube core.

[0007] Furthermore, the connector is a connecting arm, one end of which is connected to the outer wall of the oil suction tube core, and the other end extends radially along the oil suction tube core and is connected to the oil suction tube. The connecting arm is provided with inclined blades.

[0008] Furthermore, the oil suction tube core has connecting arms at both ends of one diameter, and the oil suction tube is provided with a fixing port for engaging the connecting arms via a snap fastener.

[0009] Furthermore, the connector is installed at one axial end of the annular region, and the connector maintains the oil suction pipe and the oil suction pipe core arranged coaxially at intervals.

[0010] Furthermore, the oil suction tube core is provided with an oil return channel inside, and one end of the oil return channel is open to form an oil leakage port that connects to the oil pool.

[0011] Furthermore, the spiral blade includes a connected side plate and a bottom plate, the side plate is attached to the inner wall of the oil suction pipe to maintain the position of the spiral blade, and the cross-section of the spiral blade along the axial direction is L-shaped.

[0012] Furthermore, the outer ring of the spiral blade is interference-fitted with the inner wall of the oil suction pipe, while the inner ring of the spiral blade is clearance-fitted with the oil suction pipe core.

[0013] A second objective of the present invention is to provide a compressor that utilizes the aforementioned compressor oil pumping mechanism.

[0014] A third objective of the present invention is to provide a method of operating a compressor oil pump mechanism as described in the first objective, comprising:

[0015] When the compressor rotates, it drives the oil suction pipe, the oil suction pipe core, and the spiral blades to rotate simultaneously.

[0016] The lower end of the spiral blades draws oil from the oil sump and gradually delivers the lubricating oil to the top of the suction pipe, where it is sprayed onto the area requiring lubrication.

[0017] Furthermore, the oil suction tube core is a hollow structure with openings at both ends. Part of the lubricating oil transported by the spiral blades falls into the openings of the oil suction tube core and returns to the oil sump along the oil suction tube core.

[0018] Compared with the prior art, the advantages and positive effects of this invention are:

[0019] (1) To address the issues of collision noise and poor reliability in the operation of the current spiral oil suction pipe, a connection relationship between the oil suction pipe and the oil suction pipe core is established so that the oil suction pipe, the oil suction pipe core and the spiral blade rotate together to achieve the extraction of lubricating oil, thereby solving the collision and abnormal noise problems caused by the relative motion of the oil suction pipe and the oil suction pipe core, and enabling the compressor oil pumping mechanism to operate smoothly.

[0020] (2) The oil suction core and the oil suction pipe are fixedly connected by a buckle to ensure that the two will be stationary during rotation. The integrated structure ensures that the two will not collide, thereby improving the reliability of the oil pump during operation.

[0021] (3) The L-shaped spiral blade structure increases the support area and improves the oil supply, thus meeting the purpose of oiling at low speed. In addition, the inclined blade structure on the connecting arm provides kinetic energy output for the initial oil supply through centrifugal force during rotation, which speeds up the oiling time. The two-stage oil supply method of centrifugal oil supply and spiral oil supply ensures both the oiling time and the oil supply, while also meeting the purpose of oiling at low speed. Attached Figure Description

[0022] The accompanying drawings, which form part of this invention, 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 improper limitation of the invention.

[0023] Figure 1 This is a schematic diagram of the compressor oil pump mechanism in Embodiments 1-3 of the present invention.

[0024] Figure 2 This is a schematic diagram of the oil suction pipe in Embodiments 1-3 of the present invention.

[0025] Figure 3 This is a schematic diagram of the oil suction tube core in Embodiments 1-3 of the present invention.

[0026] Figure 4 This is a schematic diagram of the helical blades in embodiments 1-3 of the present invention.

[0027] Figure 5 This is a schematic diagram of the connecting arm in Embodiments 1-3 of the present invention.

[0028] The components include: 1. oil suction pipe, 2. oil suction pipe core, 3. spiral blade, 11. fixing port, 21. pipe core, 22. oil leakage port, 23. connecting arm, and 24. buckle. Detailed Implementation

[0029] Example 1

[0030] In a typical embodiment of the present invention, such as Figures 1-5 As shown, a compressor oil pump mechanism is presented.

[0031] When a compressor is working, it needs to draw lubricating oil through an oil pump mechanism and deliver it to various friction pairs. When using a spiral oil suction pipe as the oil pump assembly, abnormal noise can occur during operation due to improper structural design of the oil suction pipe core and the oil suction pipe itself. Furthermore, reliability issues can arise due to collisions during long-term operation. Vane-type oil suction pipes require high rotational speeds and cannot meet the lubrication needs of variable frequency compressors under different operating conditions.

[0032] Based on this, this embodiment provides a compressor oil pumping mechanism, which connects the oil suction pipe 1 to the oil suction core 2. The oil suction pipe 1, the oil suction core 2, and the spiral blade 3 rotate together to extract lubricating oil, solving the collision and abnormal noise problems caused by the relative movement of the oil suction pipe 1 and the oil suction core 2, enabling the compressor oil pumping mechanism to operate smoothly. At the same time, the use of the spiral blade 3 can improve the oil suction efficiency and meet the oil pumping lubrication requirements under different speed conditions.

[0033] The compressor oil pump mechanism described above will now be explained in detail with reference to the accompanying drawings.

[0034] See Figure 1 The compressor oil pumping mechanism mainly includes an oil suction pipe 1, an oil suction pipe core 2, and a spiral blade 3. The oil suction pipe 1 is sleeved outside the oil suction pipe core 2, forming an annular region between them. The spiral blade 3 is installed within this annular region, extending axially upwards along the oil suction pipe 1. One end of the spiral blade 3 extends to one end of the annular region, and the other end extends to the other end. The spiral blade 3 surrounds the oil suction pipe core 2. When the spiral blade 3 rotates, it can draw in lubricating oil, causing the lubricating oil to gradually rise along the spiral blade 3, thus realizing the oil pumping process.

[0035] The oil suction tube core 2 and the oil suction tube 1 are connected by a connector to keep them relatively fixed. When the oil suction tube 1 rotates, the oil suction tube core 2 can rotate synchronously with the oil suction tube 1. A spiral blade 3 is installed in the annular area between the oil suction tube 1 and the oil suction tube core 2. The spiral blade 3 extends along the axial direction of the oil suction tube 1 to both ends of the oil suction tube 1. At the same time, the spiral blade 3 is connected to the oil suction tube 1. The spiral blade 3, the oil suction tube 1 and the oil suction tube core 2 can rotate together around the axis of the oil suction tube core 2.

[0036] Since the oil suction pipe 1, the oil suction pipe core 2, and the spiral blade 3 are all relatively fixed structures, when the oil suction pipe 1 is connected to the compressor crankshaft and rotates, the oil suction pipe 1, the oil suction pipe core 2, and the spiral blade 3 can rotate simultaneously, avoiding relative movement between them. This avoids the collision problem caused by relative movement between the oil suction pipe core 2 and the oil suction pipe 1, and improves the stability of its operation.

[0037] The main body of the oil suction tube core 2 is the tube core 21, and a connector is installed at the end of the tube core. The oil suction tube core 2 is connected to the oil suction tube 1 through the connector, such as... Figure 1 , Figure 2 As shown, the connector is a connecting arm 23. One end of the connecting arm 23 is connected to the outer wall of the oil suction tube core 2, and the other end extends radially along the oil suction tube core 2 and is connected to the oil suction tube 1. The connecting arm 23 is provided with inclined blades.

[0038] Regarding the structure of connecting arm 23, such as Figure 3 , Figure 5As shown, the connecting arm 23 is provided with an inclined surface to form an inclined blade similar to a fan blade. The connecting arm 23 is located at the bottom of the oil suction pipe 1 and is immersed below the surface of the lubricating oil in the oil tank. The centrifugal force during rotation provides kinetic energy output for the initial oil supply, drawing the lubricating oil in the oil tank and supplying it to the spiral blade 3, thus speeding up the oiling time.

[0039] Connecting arm 23 is installed at one axial end of the annular region, which is the end immersed in the oil sump. The connector keeps the oil suction pipe 1 and the oil suction pipe core 2 coaxially spaced, making the radial thickness of the annular region uniform and improving the stability when pumping lubricating oil. Connecting arm 23 is connected to both ends of one diameter of the oil suction pipe core 2. The oil suction pipe 1 is provided with a fixing port 11 for engaging the connecting arm 23 through a buckle 24. The end of the connecting arm 23 is engaged with the corresponding fixing port 11 on the oil suction pipe 1 through the buckle 24, ensuring that the relative movement of the oil suction pipe 1 and the oil suction pipe core 2 is stationary, avoiding abnormal noise from collisions and reliability risks.

[0040] In this embodiment, the buckle 24 connected to the end of the connecting arm 23 can be a protrusion, and the fixing port 11 can be a groove opened on the oil suction pipe 1. The oil suction pipe 1 and the oil suction pipe core 2 can be moved together by the cooperation of the protrusion and the groove.

[0041] Combination Figure 1 , Figure 4 The spiral blade 3 includes a connected side plate and a bottom plate. The side plate is attached to the inner wall of the oil suction pipe 1 to maintain the position of the spiral blade 3. The cross section of the spiral blade 3 along the axial direction is L-shaped.

[0042] The outer ring of the spiral blade 3 is interference-fitted with the inner wall of the oil suction pipe 1, and the inner ring of the spiral blade 3 is clearance-fitted with the oil suction pipe core 2. The spiral blade 3 is installed in the oil suction pipe 1 by interference fit. The spiral blade 3 has an L-shaped structure, which increases the support surface of the oil passage and improves the oil supply. The center of the spiral blade 3 is the oil suction pipe core 2, and there is a certain gap between the oil suction pipe core 2 and the spiral blade 3. After the spiral blade 3 is pressed into the oil suction pipe 1, the inner ring of the spiral blade 3 is slightly larger than the oil suction pipe core 2, which facilitates the installation of the oil suction pipe core 2.

[0043] When the compressor rotates, the crankshaft drives the compressor oil pumping mechanism to work. The oil suction pipe 1, the oil suction pipe core 2, and the spiral blade 3 rotate together. The inclined blades configured on the connecting arm 23 begin to rotate. Centrifugal force sends oil into the L-shaped spiral blade 3. The lubricating oil in the spiral blade 3 is carried up to the top of the oil suction pipe 1 component as the structure rotates, so as to achieve the purpose of oil supply.

[0044] In addition, the L-shaped spiral blade 3 structure increases the support area and improves the oil supply, thus meeting the purpose of oil supply at low speed. Furthermore, the inclined blade structure on the connecting arm 23 provides kinetic energy output for the initial oil supply through centrifugal force during rotation, accelerating the oil supply time. The two-stage oil supply method of centrifugal oil supply and spiral oil supply ensures both the oil supply time and the oil supply volume, while also meeting the purpose of oil supply at low speed, thereby meeting the pump oil lubrication requirements of the variable frequency compressor under low-speed conditions.

[0045] The oil suction tube core 2 has an internal oil return channel, with one end of the channel opening to form an oil leak 22 that connects to the oil sump. For example... Figure 1 As shown, the oil suction core 2 is a tubular structure with openings at both ends. One end opens towards the compressor body to collect the lubricating oil that flows back, and the other end opens towards the oil sump to return the collected lubricating oil to the oil sump.

[0046] Example 2

[0047] In another typical embodiment of the present invention, a compressor is provided.

[0048] The compressor in this embodiment utilizes the compressor oil pump mechanism as in Embodiment 1.

[0049] The compressor oil pump mechanism is connected to the compressor crankshaft, allowing the oil suction pipe 1 to obtain power from the compressor crankshaft, thereby driving the entire compressor oil pump mechanism to rotate. The compressor oil pump mechanism is as follows: Figures 1-5 As shown, since the compressor is equipped with a compressor oil pumping mechanism as in Example 1, the beneficial effects brought by the compressor oil pumping mechanism are described in Example 1 and will not be repeated here.

[0050] For other components in the compressor not mentioned, the existing structure can be used.

[0051] Example 3

[0052] In another typical embodiment of the present invention, such as Figures 1-5 As shown, a working method of a compressor oil pump mechanism is presented.

[0053] The working method in this embodiment utilizes the compressor oil pump mechanism as shown in Embodiment 1, including:

[0054] When the compressor rotates, the crankshaft drives the oil suction pipe 1, the oil suction pipe core 2 and the spiral blade 3 to rotate simultaneously.

[0055] The inclined blades configured on the connecting arm 23 begin to rotate, and the centrifugal force sends the oil into the L-shaped spiral blades 3;

[0056] The spiral blades 3 gradually deliver lubricating oil to the top of the oil suction pipe 1 and spray it onto the location that needs lubrication.

[0057] The oil suction tube core 2 is a hollow structure with openings at both ends, forming an oil return channel inside. Part of the lubricating oil transported by the spiral blades 3 falls into the opening of the oil suction tube core 2 and returns to the oil pool along the oil suction tube core 2.

[0058] 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 oil pumping mechanism characterized by, Includes the oil suction tube core and the oil suction tube sleeved outside the oil suction tube core; The oil suction tube core is connected to the oil suction tube via a connector, which is a connecting arm. One end of the connecting arm is connected to the outer wall of the oil suction tube core, and the other end extends radially along the oil suction tube core and connects to the oil suction tube. The connecting arm is provided with inclined blades. The oil suction tube core has connecting arms at both ends of one diameter. The oil suction tube is provided with a fixing port for engaging the connecting arms via a snap fastener. The connector is installed at one axial end of the annular region, and the connector keeps the oil suction tube and the oil suction tube core coaxially spaced. A spiral blade is installed in the annular area between the oil suction pipe and the oil suction pipe core. The spiral blade extends axially along the oil suction pipe to both ends of the oil suction pipe. The spiral blade includes a connected side plate and a bottom plate. The side plate fits against the inner wall of the oil suction pipe to maintain the position of the spiral blade. The cross-section of the spiral blade along the axial direction is L-shaped. The spiral blade, the oil suction pipe and the oil suction pipe core can rotate together around the axis of the oil suction pipe core.

2. The compressor pumping mechanism of claim 1 wherein, The oil suction tube core is equipped with an oil return channel inside, and one end of the oil return channel is open to form an oil leakage port that connects to the oil pool.

3. The compressor pumping mechanism of claim 1 wherein, The outer ring of the spiral blade is interference-fitted with the inner wall of the oil suction pipe, while the inner ring of the spiral blade is clearance-fitted with the oil suction pipe core.

4. A compressor comprising the compressor oil pump mechanism as described in any one of claims 1-3.

5. A method of operating a compressor pumping mechanism as claimed in any one of claims 1 to 3, characterised in that, include: When the compressor rotates, it drives the oil suction pipe, the oil suction pipe core, and the spiral blades to rotate simultaneously. The lower end of the spiral blades draws oil from the oil sump and gradually delivers the lubricating oil to the top of the suction pipe, where it is sprayed onto the area requiring lubrication.

6. The method of operation of claim 5, wherein, The oil suction tube core is a hollow structure with openings at both ends. Part of the lubricating oil transported by the spiral blades falls into the openings of the oil suction tube core and returns to the oil sump along the oil suction tube core.

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