Oil transfer device, compressor pump body assembly, and compressor

Abstract

The present application relates to a kind of oil delivery device, compressor pump body assembly and compressor, it relates to air conditioning equipment technical field, for solving when the low speed of compressor main shaft, oil delivery device exists the problem of insufficient lubrication to each movable part of compressor.Oil delivery device includes compression cavity, the compression cavity includes: cavity, it has inner cavity;And vane disc rotating mechanism, it is rotatably arranged in the inner cavity, oil outlet channel is arranged in the vane disc rotating mechanism, and the oil outlet channel is used to supply oil to compressor;Wherein, the volume of the compression cavity changes with the rotation of the vane disc rotating mechanism;When the compression cavity volume becomes small, the lubricating oil in it is pressed into the oil outlet channel to supply oil to compressor.In the present application, the oil supply mode using the volume change of compression cavity will not be affected by the rotation speed and appear the case of insufficient oil supply, can ensure continuous oil supply to the compressor pump body of compressor.

Description

Technical Field

[0001] This invention relates to the field of air conditioning compressor equipment technology, and particularly to an oil delivery device, a compressor pump assembly, and a compressor. Background Technology

[0002] In the refrigeration industry, there is a growing demand for equipment with ultra-high cooling capacity, and the core component of such equipment is the compressor. To meet the demands of high cooling capacity, compressors require high-speed and high-displacement technologies. To address the challenges of achieving high speed and high displacement, and to prevent damage to components, thorough lubrication of all internal parts of the compressor is essential.

[0003] Currently, the lubricating oil required by the compressor is supplied by a straight oil suction pipe embedded at the lower end of the central oil hole of the compressor main shaft, connected by an interference fit. The suction pipe contains guide vanes, which are also interference-fitted with the central hole of the compressor main shaft. By rotating the main shaft, the lubricating oil enters the suction pipe through the suction port at the lower end. Under centrifugal force, the guide vanes transport the oil to the central hole channel of the main shaft, and then to the compressor housing, providing thorough lubrication to all components.

[0004] Current oil delivery methods primarily rely on the centrifugal force generated by the rotation of the compressor's main shaft to achieve oil delivery. The magnitude of this centrifugal force is directly proportional to the compressor's rotational speed; the compressor's rotational speed determines the magnitude of the centrifugal force. Therefore, limiting the minimum rotational speed of conventional compressors is crucial. However, in refrigeration equipment, to meet the demands of refrigeration conditions, lower compressor rotational speeds are required. At lower speeds, the centrifugal force is small, resulting in reduced oil delivery. This leads to insufficient lubrication between the moving parts within the compressor pump body, causing wear and affecting compressor reliability.

[0005] In other words, when the compressor spindle speed is low, the existing oil delivery device has the problem of insufficient lubrication of the moving parts in the compressor pump body. Summary of the Invention

[0006] This invention provides an oil delivery device, a compressor pump assembly, and a compressor, which solves the problem of insufficient lubrication of the moving parts of the compressor when the compressor spindle speed is low.

[0007] The present invention provides an oil delivery device, including a compression chamber, the compression chamber comprising: a cavity having an inner cavity; and an impeller rotating mechanism rotatably disposed within the inner cavity, the impeller rotating mechanism having an oil outlet channel for supplying oil to a compressor; wherein, the volume of the compression chamber changes with the rotation of the impeller rotating mechanism; when the volume of the compression chamber decreases, the lubricating oil within it is forced into the oil outlet channel to supply oil to the compressor.

[0008] In one embodiment, the output end of the oil outlet channel is provided with a plug interface, which is adapted to one end of the compressor main shaft. The compressor main shaft is plugged into the plug interface, and the compressor main shaft can drive the impeller rotation mechanism to rotate in the inner cavity.

[0009] In one embodiment, the impeller rotating mechanism includes: a rotating shaft rotatably disposed within an inner cavity; and a plurality of blades spaced circumferentially on the outer periphery of the rotating shaft; wherein an oil outlet channel is disposed within the rotating shaft, an insertion interface is disposed at the end of the rotating shaft away from the inner cavity, an annular cavity is defined between the rotating shaft and the cavity, the plurality of blades divide the annular cavity into a plurality of compression chambers, the annular cavity including a first annular cavity portion and a second annular cavity portion connected to the first annular cavity portion; when two adjacent blades slide within the first annular cavity portion, the volume of the compression chamber formed between the two adjacent blades remains constant; when two adjacent blades slide within the second annular cavity portion, the volume of the compression chamber formed between the two adjacent blades decreases and communicates with the oil outlet channel.

[0010] In one embodiment, the cross-section of the annular cavity is a ring, the inner ring of the ring is circular, and the outer ring of the ring includes a first arc segment and a second arc segment connected to the first arc segment. The radius of the first arc segment is D1, and the distance D2 from the center of the first arc segment to the second arc segment is less than or equal to D1. The arc-shaped cavity wall where the first arc segment is located is the outer wall of the first annular cavity, and the arc-shaped cavity wall where the second arc segment is located is the outer wall of the second annular cavity. The blade slides within the outer wall of the first annular cavity or the outer wall of the second annular cavity.

[0011] In one embodiment, the blade is a deformable blade. The blade does not deform when sliding in the first annular cavity, and the volume of the compression cavity between two adjacent blades remains constant. When the blade slides in the second annular cavity, it deforms, and the volume of the compression cavity between two adjacent deformed blades decreases.

[0012] In one embodiment, the deformable blade includes: a flexible portion that deforms under stress; a circular head disposed at one end of the flexible portion and in contact with an annular cavity; and a tail disposed at the other end of the flexible portion and connected to a rotating shaft.

[0013] In one embodiment, the blade is a telescopic blade with telescopic function. One end of the telescopic blade is a connecting end, which is connected to the rotating shaft, and the other end of the telescopic blade is a telescopic end, which contacts the annular cavity.

[0014] In one embodiment, the blade is a sliding blade, and a radial sliding hole is provided on the outer periphery of the rotating shaft. The sliding blade is slidably disposed in the corresponding radial sliding hole, and a spring is also provided in the radial sliding hole. The spring can press the sliding blade onto the annular cavity.

[0015] In one embodiment, the cavity includes: a lower cavity having a circular opening; an upper cover plate covering the opening of the circular opening; and a protrusion disposed within the lower cavity, the upper cover plate pressing the protrusion into the circular opening; wherein the protrusion has an inner arcuate surface that protrudes in a direction away from the central axis of the lower cavity, the starting edge and the ending edge of the inner arcuate surface abutting against the inner wall surface of the circular opening, and the circular opening, the inner arcuate surface, and the upper cover plate defining the inner cavity.

[0016] In one embodiment, the bottom of the circular opening is provided with a first positioning groove, and the upper cover is provided with a second positioning groove corresponding to the first positioning groove. One end of the protrusion is located in the first positioning groove, and the other end is located in the second positioning groove.

[0017] In one embodiment, an oil suction port is provided on the lower cavity, which is connected to the first annular cavity and is used to supply lubricating oil to the compression cavity.

[0018] In one embodiment, the rotating shaft is a stepped shaft, and a first shaft section, an intermediate shaft section, a filter section, and a second shaft section are sequentially arranged along the central axis of the rotating shaft. The first shaft section is provided with an insertion interface and extends into the upper cover plate. Multiple blades are provided on the outer periphery of the intermediate shaft section, and multiple filter holes are provided on the outer periphery of the filter section. The second shaft section is pivotally connected to the lower cavity. A central flow channel hole is provided through the intermediate shaft section, the first shaft section, and the filter section. One end of the central flow channel hole is connected to the filter hole, and the other end is connected to the insertion interface. When the volume of the compression chamber decreases, the lubricating oil in it is forced into the multiple filter holes for filtration before entering the central flow channel hole. The oil outlet channel includes the filter hole and the central flow channel hole.

[0019] In one embodiment, the circular opening is a stepped cavity, and a first concave layer, a second concave layer, a third concave layer, and a fourth concave layer with gradually decreasing inner diameter are arranged sequentially along the central axis of the circular opening. The first concave layer is used to install the top cover plate, the second concave layer is used to install the intermediate shaft section and multiple blades, the third concave layer is used to install the filter section, and the fourth concave layer is used to install the second shaft section. The bottom of the second concave layer is provided with a connecting groove that communicates with the third concave layer and communicates with the compression chamber when the volume decreases.

[0020] The present invention also provides a compressor pump body assembly, comprising: a compressor pump body for compressing air; and the aforementioned oil delivery device; wherein the compressor main shaft of the compressor pump body is connected to the oil delivery device for supplying lubricating oil to the compressor pump body.

[0021] The present invention also provides a compressor, comprising: a housing assembly; a motor disposed within the housing assembly; the aforementioned compressor pump assembly connected to the output shaft of the motor; and a separator assembly connected to the air inlet of the compressor pump assembly.

[0022] Compared with existing technologies, the advantages of this invention lie in the fact that the volume of the compression chamber is changed by the rotation of the impeller mechanism within the inner cavity. This volume change compresses the lubricating oil within the compression chamber, thereby achieving continuous oil supply to the compressor pump body. Compared with related technologies, even at a lower rotation speed of the impeller mechanism within the inner cavity, this oil supply method utilizing the volume change of the compression chamber will not be affected by the rotation speed, ensuring continuous oil supply to the compressor pump body. This ensures sufficient lubricating oil for adequate lubrication of the compressor pump body. Attached Figure Description

[0023] The invention will now be described in more detail with reference to embodiments and the accompanying drawings.

[0024] Figure 1 This is an exploded three-dimensional structural diagram of the oil conveying device in Embodiment 1 of the present invention;

[0025] Figure 2 This is a main cross-sectional view of the oil conveying device in Embodiment 1 of the present invention (the arrow points in the direction of oil flow);

[0026] Figure 3 yes Figure 2 A three-dimensional structural diagram of the rotating mechanism of the middle blade disk;

[0027] Figure 4 yes Figure 2 A three-dimensional structural diagram of the middle blade;

[0028] Figure 5 yes Figure 2 A three-dimensional structural diagram of the lower and middle cavities;

[0029] Figure 6 yes Figure 2 A three-dimensional structural diagram of the upper and middle cover plates;

[0030] Figure 7 This describes the working principle of the oil conveying device in Embodiment 1 of the present invention. Figure 1 ;

[0031] Figure 8 This describes the working principle of the oil conveying device in Embodiment 1 of the present invention. Figure 2 ;

[0032] Figure 9 This is a schematic diagram of the working principle of the oil conveying device in Embodiment 1 of the present invention (the blades are not shown, and the dashed line is the dividing line between the first annular cavity and the second annular cavity).

[0033] Figure 10 This is a schematic diagram of the working principle of the oil conveying device in Embodiment 2 of the present invention;

[0034] Figure 11 This is a schematic diagram of the working principle of the oil conveying device in Embodiment 3 of the present invention;

[0035] Figure 12 This is a front cross-sectional view of the compressor pump body assembly in Embodiment 4 of the present invention;

[0036] Figure 13 This is a schematic diagram of the structural composition of the compressor pump body assembly in Comparative Example 1 of the present invention;

[0037] Figure 14 This is a schematic diagram of the structural composition of the compressor in Comparative Example 1 of the present invention.

[0038] Figure label:

[0039] 10. Cavity; 11. Lower Cavity; 111. Circular Opening; 1111. First Concave Layer; 1112. Second Concave Layer; 1113. Third Concave Layer; 1114. Fourth Concave Layer; 1115. Connecting Groove; 112. Oil Suction Port; 12. Upper Cover Plate; 13. Protrusion; 131. Inner Arc Surface; 1311. Starting Edge; 1312. Ending Edge; 20. Impeller Rotation Mechanism; 21. Rotating Shaft; 211. First Shaft Section; 2111. Insertion Interface; 212. Intermediate Shaft Section; 213. Filter Section; 2131. Filter Hole; 214. Second Shaft Section; 22. Blade; 221. Flexible Part; 222. Circular Head; 223. Tail; 2 3. Oil outlet channel; 24. Spring; 30. Compression chamber; 40. Annular cavity; 41. First annular cavity; 42. Second annular cavity; 100. Compressor pump body assembly; 101. Compressor main shaft; 1011. Central oil hole; 102. Upper silencer; 103. Upper flange; 104. Upper roller; 105. Upper cylinder; 106. Upper partition; 107. Lower partition; 108. Lower roller; 109. Lower cylinder; 110. Lower flange cover; 200'. Housing assembly; 300'. Motor; 400'. Compressor pump body assembly; 401'. Oil suction pipe; 402'. Oil guide plate; 403'. Stepped central oil hole; 600'. Separator assembly. Detailed Implementation

[0040] The invention will now be further described with reference to the accompanying drawings.

[0041] Example 1

[0042] like Figure 1 and Figure 2As shown, the present invention provides an oil delivery device, including a compression chamber 30, the compression chamber 30 including a cavity body 10 and an impeller rotation mechanism 20, wherein the cavity body 10 has an inner cavity; the impeller rotation mechanism 20 is rotatably disposed in the inner cavity, and an oil outlet channel 23 is provided in the impeller rotation mechanism 20 for supplying oil to the compressor; wherein, the volume of the compression chamber changes with the rotation of the impeller rotation mechanism 20; when the volume of the compression chamber decreases, the lubricating oil in it is forced into the oil outlet channel 23 to supply oil to the compressor.

[0043] Specifically, such as Figure 1 and Figure 2 As shown, the oil outlet channel 23 is connected to the central oil hole 1011 of the compressor main shaft 101. The central oil hole 1011 is connected to the lubrication pipeline inside the compressor. The impeller rotation mechanism 20 and the cavity 10 define the compression chamber 30. The volume of the compression chamber 30 changes with the rotation of the impeller rotation mechanism 20. When the volume of the compression chamber 30 decreases, the lubricating oil inside is forced into the oil outlet channel and then transported to the lubrication pipeline through the central oil hole 1011 to lubricate the compressor pump body.

[0044] In the above configuration, the volume of the compression chamber 30 is changed by the rotation of the impeller rotating mechanism 20 within the inner cavity. This volume change compresses the lubricating oil within the compression chamber 30, thus achieving continuous oil supply to the compressor pump body. Compared to related technologies, even at a lower rotation speed of the impeller rotating mechanism within the inner cavity, this oil supply method utilizing the volume change of the compression chamber is not affected by the rotation speed and will not result in insufficient oil supply, ensuring continuous oil supply to the compressor pump body. This ensures sufficient lubricating oil for adequate lubrication of the compressor pump body.

[0045] Furthermore, the oil delivery device in this application can prevent the oil from being agitated in the compressor oil sump, thereby improving the compressor's power consumption and achieving energy-saving effects. It also avoids fluctuations in the oil level within the compressor housing, which helps reduce the compressor's oil circulation rate, thus ensuring sufficient lubricating oil to adequately lubricate the compressor pump body.

[0046] Specifically, such as Figure 1 and Figure 2 As shown, in one embodiment, the output end of the oil outlet channel 23 is provided with a plug interface 2111, which is adapted to one end of the compressor main shaft 101. The compressor main shaft 101 and the plug interface 2111 are plugged in and engaged, and the compressor main shaft 101 can drive the impeller rotation mechanism 20 to rotate in the inner cavity.

[0047] In the above configuration, the rotation of the compressor main shaft 101 drives the impeller rotation mechanism 20 to rotate within the inner cavity, thereby driving the oil delivery device to operate and achieve sufficient lubrication of the compressor pump body. This eliminates the need for an additional drive device to rotate the impeller rotation mechanism 20, thus saving on the cost of the oil delivery device.

[0048] Of course, in alternative embodiments not shown in the accompanying drawings of this application, a separate drive motor can be provided to drive the oil delivery device.

[0049] Specifically, such as Figure 2 As shown, in one embodiment, the connector 2111 is adapted to one end of the compressor spindle 101, which is in the shape of a semi-circular arc.

[0050] Specifically, such as Figure 3 As shown, in one embodiment, the impeller rotation mechanism 20 includes a rotating shaft 21 and a plurality of blades 22. The rotating shaft 21 is rotatably disposed within an inner cavity. The plurality of blades 22 are spaced circumferentially around the outer periphery of the rotating shaft 21. An oil outlet channel 23 is disposed within the rotating shaft 21, and an insertion interface 2111 is disposed at the end of the rotating shaft 21 away from the inner cavity. An annular cavity 40 is defined between the rotating shaft 21 and the cavity 10. The plurality of blades 22 divide the annular cavity 40 into a plurality of compression chambers 30. The annular cavity 40 includes a first annular cavity portion 41 and a second annular cavity portion 42 connected to the first annular cavity portion 41.

[0051] When two adjacent blades 22 slide within the first annular cavity 41, the volume of the compression cavity 30 formed between the two adjacent blades 22 remains constant. When two adjacent blades 22 slide within the second annular cavity 42, the volume of the compression cavity 30 formed between the two adjacent blades 22 decreases (relative to the constant volume of the compression cavity formed when the two adjacent blades 22 slide within the first annular cavity 41), and it connects to the oil outlet channel 23.

[0052] In the above configuration, by utilizing the change in the cross-sectional area of ​​the second annular cavity 42, the volume of the compression chamber 30 formed between the two adjacent blades 22 and the second annular cavity 42 becomes smaller, thereby compressing the lubricating oil in the compression chamber 30, and thus realizing continuous oil delivery to the compressor pump body of the compressor.

[0053] Specifically, such as Figure 9As shown, in one embodiment, the cross-section of the annular cavity 40 is circular, the inner ring of the annular cavity is circular, and the outer ring of the annular cavity includes a first arc segment and a second arc segment connected to the first arc segment. The radius of the first arc segment is D1, and the distance D2 from the center of the first arc segment to the second arc segment is less than or equal to D1. The arc-shaped cavity wall where the first arc segment is located is the outer wall of the first annular cavity 41, and the arc-shaped cavity wall where the second arc segment is located is the outer wall of the second annular cavity 42. The blade 22 slides within the outer wall of the first annular cavity 41 or the outer wall of the second annular cavity 42.

[0054] In the above configuration, since the distance D2 from the center of the first arc segment to the second arc segment is less than or equal to D1, the volume of the compression chamber 30 formed between the two adjacent blades 22 and the second annular cavity 42 becomes smaller, thereby compressing the lubricating oil in the compression chamber 30, and thus realizing continuous oil delivery to the compressor pump body of the compressor.

[0055] It should be noted that the annular cavity 40 in this application is an irregular annular cavity, and the cross-section of the annular cavity 40 is an irregular ring. The term "ring" in this application can include various forms such as a perfectly regular ring, a ring-like ring, and an elliptical ring, and is not limited to a perfectly regular ring.

[0056] Specifically, such as Figure 4 As shown, in one embodiment, the blade 22 is a deformable blade. When the blade 22 slides in the first annular cavity 41, it does not deform. The volume of the compression cavity 30 between adjacent blades remains constant. When the blade 22 slides in the second annular cavity 42, it deforms. The volume of the compression cavity 30 between two adjacent deformed blades 22 decreases.

[0057] In the above configuration, when the blade 22 slides in the second annular cavity 42, the end of the blade 22 in contact with the second annular cavity 42 is subjected to force, causing the blade 22 to bend and deform. This ensures that the volume of the compression cavity 30 between the deformed blades 22 decreases. Consequently, the lubricating oil in the compression cavity 30 is compressed, thereby achieving continuous oil delivery to the compressor pump body of the compressor.

[0058] It should be noted that in this application, one of the two adjacent blades 22 deforms upon contact with the second annular cavity 42, while the other does not deform. In this case, the volume of the compression cavity 30 between the two adjacent blades 22 decreases. Alternatively, if both adjacent blades 22 deform upon contact with the second annular cavity 42, the volume of the compression cavity 30 between the two adjacent blades 22 is even smaller than the volume of the deformed blade, resulting in a higher degree of compression of the lubricating oil within.

[0059] Specifically, such as Figure 4As shown, in one embodiment, the deformable blade includes a flexible portion 221, a circular head 222, and a tail 223. The flexible portion 221 deforms under stress, and the circular head 222 is located at one end of the flexible portion 221, contacting the annular cavity 40. The tail 223 is located at the other end of the flexible portion 221 and is connected to the rotating shaft 21. This deformation of the flexible portion 221 under stress enables the deformable blade to deform, thereby ensuring that the volume of the compression cavity 30 can be reduced.

[0060] Specifically, such as Figure 5 , Figure 6 and Figure 9 As shown, in one embodiment, the cavity 10 includes a lower cavity 11, an upper cover plate 12, and a protrusion 13. The lower cavity 11 has a circular opening 111; the upper cover plate 12 covers the opening of the circular opening 111; the protrusion 13 is disposed within the lower cavity 11, and the upper cover plate 12 presses the protrusion 13 tightly within the circular opening 111; the protrusion 13 has an inner arc-shaped surface 131 that protrudes in a direction away from the central axis of the lower cavity 11, and the starting edge 1311 and the ending edge 1312 of the inner arc-shaped surface 131 are in contact with the inner wall surface of the circular opening 111. The circular opening 111, the inner arc-shaped surface 131, and the upper cover plate 12 define the inner cavity.

[0061] Specifically, such as Figure 7 and Figure 8 As shown, in one embodiment, the bump 13 is a crescent-shaped bump.

[0062] Specifically, such as Figure 2 As shown, in one embodiment, the bottom of the circular opening 111 is provided with a first positioning groove, and the upper cover plate 12 is provided with a second positioning groove corresponding to the first positioning groove. One end of the protrusion 13 is located in the first positioning groove, and the other end is located in the second positioning groove.

[0063] Specifically, such as Figure 1 As shown, in one embodiment, both the first positioning groove and the second positioning groove are tooth-shaped grooves adapted to the crescent-shaped protrusion.

[0064] Specifically, such as Figure 1 and Figure 8 As shown, in one embodiment, the lower cavity 11 is provided with an oil suction port 112, which is connected to the annular cavity and is used to provide lubricating oil to the compression cavity 30.

[0065] Specifically, such as Figure 3As shown, in one embodiment, the rotating shaft 21 is a stepped shaft, with a first shaft section 211, an intermediate shaft section 212, a filter section 213, and a second shaft section 214 arranged sequentially along the central axis of the rotating shaft 21. The first shaft section 211 is provided with an insertion interface 2111, which extends into the upper cover plate 12. Multiple blades 22 are provided on the outer periphery of the intermediate shaft section 212, and multiple filter holes 2131 are provided on the outer periphery of the filter section 213. The second shaft section 214 is pivotally connected to the lower cavity 11. A central flow channel hole is provided through the intermediate shaft section 212, the first shaft section 211, and the filter section 213 (along the central axis of the rotating shaft 21). One end of the central flow channel hole is connected to the filter hole 2131, and the other end is connected to the insertion interface 2111. When the volume of the compression chamber 30 decreases, the lubricating oil inside is forced into the multiple filter holes 2131 for filtration before entering the central flow channel hole. The filter holes 2131 and the central flow channel hole constitute an oil outlet channel 23.

[0066] Specifically, such as Figure 5 As shown, in one embodiment, the circular opening 111 is a stepped cavity, and along the central axis of the circular opening 111, there are concave first layer 1111, concave second layer 1112, concave third layer 1113 and concave fourth layer 1114 with gradually decreasing inner diameters. The concave first layer 1111 is used to install the upper cover plate 12, the concave second layer 1112 is used to install the intermediate shaft section 212 and multiple blades 22, the concave third layer 1113 is used to install the filter section 213, and the concave fourth layer 1114 is used to install the second shaft section 214. The bottom of the concave second layer 1112 is provided with a connecting groove 1115 that communicates with the concave third layer 1113. The connecting groove 1115 communicates with the compression chamber 30 when the volume decreases.

[0067] It should be noted that the outer circumference of the intermediate shaft section is provided with multiple T-slots for assembling the blade structure. The circumference of the filter section is provided with a porous structure (multiple filter holes 2131), the central axis of the filter hole 2131 is at a 90-degree angle or other angle to the central axis of the rotating shaft, and is used to connect to the central flow channel hole. The outer circumference of the first shaft section mates with the inner circumference hole of the upper cover plate, and the outer circumference of the second shaft section mates with the concave fourth layer 1114 of the lower cavity 11. The first shaft section 211 and the second shaft section 214 are used to fix the rotation of the rotating shaft 21.

[0068] Specifically, such as Figure 7 and Figure 8 As shown, in one embodiment, an oil suction port 112 is provided on the sidewall of the concave second layer 1112 and is opened radially along the concave second layer 1112.

[0069] Specifically, such as Figure 2 As shown, in one embodiment, the first positioning groove is disposed on the bottom wall of the concave third layer 1113.

[0070] It should be noted that the tail 223 of the deformable blade has a T-shaped structure; its circular head 222 is made of high-wear-resistant steel, the flexible part 221 is made of high-strength, corrosion-resistant rubber, and the T-shaped structure of the tail 223 is made of high-strength steel; one end of the flexible part is connected to the circular head 222, and the other end is connected to the T-shaped structure. The deformable blade is slidably assembled with the T-shaped groove on the outer circumference of the intermediate shaft section of the oil conveying device rotating shaft 21 to form an impeller. It is used to drive the fluid to rotate. Its upper cover plate is annular, and one end face is provided with a toothed groove, namely the first positioning groove. Its protrusion 13 is assembled with the first positioning groove and the second positioning groove, and the blade 22, the lower cavity 11 and the rotating shaft 21 form a fan-shaped structure. In order to allow the incoming fluid (lubricating oil) to flow out of the lower cavity 11, a crescent-shaped protrusion is provided on the inner circle of the lower cavity 11. The purpose is to reduce the fan-shaped area (cross-sectional area of ​​the compression chamber 30) of the rotating blade 22 when it passes the protrusion 13, so that the fluid in it is compressed and flows out with the oil outlet.

[0071] It should be noted that in this application, the compressor motor is connected to the upper end of the compressor main shaft, and its tail end semi-circular structure is assembled with the concave semi-circular structure (insertion interface 2111) of the rotating shaft 21. The assembly form is insertion type. When the motor is powered on, the compressor main shaft 101 drives the rotating shaft 21 to rotate. Liquid enters the compression chamber 30 through the oil suction port 112. Before the oil delivery device is started, the compression chamber 30 (volume unchanged) is filled with delivery liquid. After starting, the impeller is driven to rotate at high speed by the compressor main shaft 101, and the liquid between the impellers also rotates with the impeller. The protrusion 13 causes the impeller to change volume during rotation. Therefore, the blades 22 suck in oil through the oil suction port 112, and as they rotate to the minimum volume, they discharge oil. The lubricating oil enters the oil outlet (connecting groove 1115), and then flows into the central oil hole 1011 after passing through the filter hole 2131 and the central flow channel hole on the rotating shaft 21. Therefore, the oil delivery device forms a continuous lubricating oil delivery method of radial oil suction and axial oil discharge. The central oil hole 1011 of the compressor main shaft 101 of the compressor pump body assembly 100 is connected to the central flow channel hole of the oil delivery device. The oil from the oil delivery device is delivered to each oil passage of the compressor pump body assembly 100 through the central oil hole 1011, thereby lubricating each movable part in the compressor pump body assembly 100 connected to each oil passage.

[0072] Example 2

[0073] Example 2 differs from Example 1 in the following ways:

[0074] Specifically, such as Figure 10 As shown, in one embodiment, the blade 22 is a telescopic blade with telescopic function. One end of the telescopic blade is a connecting end, which is connected to the rotating shaft 21, and the other end of the telescopic blade is a telescopic end, which contacts the annular cavity 40.

[0075] Specifically, such as Figure 10 As shown, in one embodiment, the outer circumference of the intermediate shaft section is provided with a plurality of T-shaped grooves for assembling telescopic blades. The connecting end of the telescopic blade is configured as a T-shaped structure, which is slidably connected to the T-shaped grooves in the axial direction of the intermediate shaft section 212. The telescopic end is telescopic relative to the connecting end.

[0076] The other structures of Example 2 are the same as those of Example 1, and will not be described in detail here.

[0077] Example 3

[0078] Example 3 differs from Example 1 in the following ways:

[0079] Specifically, such as Figure 11 As shown, in one embodiment, the blade 22 is a sliding blade, and a radial sliding hole is provided on the outer periphery of the rotating shaft 21. The sliding blade is slidably disposed in the radial sliding hole, and a spring 24 is also provided in the radial sliding hole. The spring 24 can press the sliding blade onto the annular cavity 40.

[0080] The other structures of Example 3 are the same as those of Example 1, and will not be described in detail here.

[0081] It should be noted that in Embodiment 3 of this application, the sliding blade is used to slide within the corresponding radial sliding hole to achieve the telescopic function of the sliding blade, thereby changing the shape of the compression chamber 30 without any change in the shape of the blade itself. In Embodiment 1 of this application, the change of the compression chamber 30 is achieved through the deformation of the blade itself under force, and in Embodiment 2, the change of the compression chamber 30 is achieved through the telescopic function of the blade itself.

[0082] Example 4

[0083] like Figure 12 As shown, the present invention also provides a compressor pump body assembly 100, which includes a compressor pump body and the oil delivery device in Embodiment 1. The compressor main shaft 101 of the compressor pump body is connected to the oil delivery device for supplying lubricating oil to the compressor pump body.

[0084] Specifically, such as Figure 12As shown, in one embodiment, the compressor pump body includes a compressor main shaft 101, an upper silencer 102, an upper flange 103, an upper roller 104, an upper cylinder 105, an upper partition 106, a lower partition 107, a lower roller 108, a lower cylinder 109, a lower flange, and a lower flange cover 110. The compressor main shaft 101 passes through the central axis of the upper flange 103, upper roller 104, upper partition 106, lower partition 107, lower roller 108, lower flange, and lower flange cover 110. The compressor main shaft 101 has a central oil hole 1011. The upper roller 104 rotates through the eccentric part on the compressor main shaft 101 to form a compressor compression chamber in the upper cylinder 105, and the same applies to the lower cylinder 109. The lower flange has a skirt structure with screw holes on the lower end face of the skirt. The lower flange cover 110 is locked to the lower flange skirt with screws. The oil delivery device is locked to the compressor lower flange cover 110. The compressor main shaft 101 is connected to the rotating shaft 21 of the oil delivery device. The central flow channel hole of the compressor main shaft 101 and the rotating shaft 21 of the oil delivery device are connected. On the one hand, it provides power to the oil delivery device, and on the other hand, the oil delivery device and the compressor main shaft 101 form an oil delivery circuit.

[0085] It should be noted that the working principle of the compressor pump body is existing technology, and therefore will not be described in detail here. In alternative embodiments not shown in the accompanying drawings of this application, the compressor pump body assembly may be configured to include the compressor pump body and the oil delivery device in Embodiments 2 or 3.

[0086] Example 5

[0087] The present invention provides a compressor, which includes a housing assembly, a motor, and the aforementioned compressor pump assembly 100 and separator assembly. The motor is disposed within the housing assembly, the compressor pump assembly 100 is connected to the output shaft of the motor, and the separator assembly is connected to the air inlet of the compressor pump assembly 100.

[0088] It should be noted that the working principle of the compressor is existing technology, and therefore will not be described in detail here. In alternative embodiments not shown in the accompanying drawings of this application, the compressor pump assembly may be configured to include a compressor pump body and the oil delivery device in Embodiments 2 or 3.

[0089] Comparative Example 1

[0090] like Figure 13 and Figure 14As shown, this invention provides a compressor, which mainly includes a distributor assembly 600', a motor 300', a compressor pump assembly 400', and a housing assembly 200'. The outlet of the distributor assembly 600' is connected to the compressor pump assembly 400' for gas transport; the motor 300', the compressor pump assembly 400', and the lubricating oil are disposed within the compressor housing assembly 200', providing a sealing effect. Refrigerant gas enters the distributor assembly 600' from the evaporator for gas-liquid separation, and then enters the compressor pump assembly 400' through the outlet of the distributor assembly 600' for compression, where it is compressed into high-temperature, high-pressure gas and discharged through the compressor housing assembly 200'.

[0091] Specifically, such as Figure 13 and Figure 14 As shown, in one embodiment, the compressor pump assembly 400' includes a compressor main shaft, an upper silencer, an upper flange, an upper roller, an upper cylinder, an upper partition, a lower partition, a lower cylinder, a lower roller, a lower flange, a lower silencer chamber, an oil suction pipe 401', and an oil guide plate 402'. The compressor main shaft passes through the central axis of the upper flange, upper roller, upper partition, lower partition, lower roller, and lower flange. A stepped oil hole is provided at the center of the main shaft, with the lower section oil hole being larger and the upper section oil hole being smaller. A guide plate 402' is provided in the lower section oil hole, and an oil suction pipe 401' is provided at the tail end. The upper roller rotates through the eccentric part on the main shaft (compressor main shaft) to form a compression chamber in the upper cylinder, and the same applies to the lower cylinder. Thus, the pump assembly achieves the purpose of compressing gas through the rotation of each component.

[0092] During operation, the pump assembly requires lubrication and heat dissipation through lubricating oil. A conventional compressor uses a stepped central oil hole 403' at the center of the compressor shaft, into which a guide vane 402' is installed. An oil suction pipe 401' is installed at the lower end of the stepped central oil hole, forming an oil delivery device. By rotating the compressor shaft, lubricating oil enters the oil suction pipe 401' through the suction port at the lower end of the suction pipe. Under centrifugal force, the guide vane 402' delivers the oil to the stepped central oil hole 403', and then to various moving parts within the compressor housing for lubrication.

[0093] It should be noted that existing oil delivery methods (such as the one in Comparative Example 1) primarily rely on the centrifugal force generated by the rotation of the main shaft to achieve oil delivery. The magnitude of the centrifugal force is directly proportional to the compressor's rotational speed; the compressor's rotational speed determines the magnitude of the centrifugal force. Therefore, limiting the minimum rotational speed of conventional compressors is particularly important. Firstly, in refrigeration equipment, to meet the demands of refrigeration conditions, a lower compressor rotational speed is required. However, at lower speeds, the centrifugal force is small, resulting in reduced oil delivery. This leads to insufficient lubrication between the compressor's moving parts, causing wear and affecting the compressor's reliability.

[0094] Secondly, as the compressor main shaft rotates, it will drive the lower oil suction pipe 401' to rotate. The oil suction pipe 401' will agitate the lower oil sump of the compressor, causing impurities that have settled in the lower oil sump to enter between the compressor lubrication components, causing the compressor to seize or block the oil passage, affecting the reliability of the compressor.

[0095] Third, the long oil suction pipe at the lower end of the compressor main shaft affects the overall height of the machine, making it difficult to miniaturize the compressor.

[0096] Fourth, the machining of the stepped center oil hole of the main shaft is difficult and time-consuming; secondly, as the core rotating component, the large oil hole at the center of the lower stepped section of the compressor main shaft can easily affect the strength of the compressor main shaft and result in poor reliability.

[0097] In this invention, the compressor (Embodiment 5) employs an oil delivery device at the lower end of its main shaft. This device features radial oil suction and axial oil discharge. The compressor main shaft 101 drives the internal impeller to rotate, thereby causing lubricating oil to flow. The lubricating oil passes through the internal filter section 213 of the oil delivery device and is output to the central oil hole 1011 of the compressor main shaft, providing lubrication to all moving parts within the compressor. The radial oil suction method effectively reduces the intake of impurities at the oil suction port 112. The filter section 213 inside the oil delivery device effectively prevents impurities from clogging the oil passages and causing compressor wear. Furthermore, using this oil delivery device helps to reduce the distance between the oil suction port 112 and the lower cover of the compressor housing, enabling compressor miniaturization. The main shaft's central stepped oil hole has been changed to a through hole, effectively improving crankshaft strength. The compressor main shaft 101 rotates, and the lubricating oil is delivered through the oil delivery device. Continuous oil delivery is achieved through volume change, resulting in high oil delivery efficiency and good operating efficiency at low compressor speeds. The lower-mounted oil delivery device delivers oil through an internal rotating impeller, eliminating the need for an oil sump, which helps improve the oil circulation rate and effectively reduces the compressor's power consumption, achieving energy-saving effects. This allows users to save more electricity and ensures higher compressor reliability.

[0098] Although the invention has been described with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An oil conveying device, characterized in that, include: A cavity, having an internal cavity; and An impeller rotating mechanism is rotatably disposed within the inner cavity, and an oil outlet channel is provided within the impeller rotating mechanism for supplying oil to the compressor. The output end of the oil outlet channel is provided with a connector, which is adapted to one end of the compressor main shaft. The compressor main shaft can drive the impeller rotating mechanism to rotate in the inner cavity. The impeller rotating mechanism includes: A rotating shaft is rotatably disposed within the inner cavity; and Multiple blades are arranged at circumferential intervals on the outer periphery of the rotation axis; The oil outlet channel is disposed within the rotating shaft, and the insertion interface is disposed at the end of the rotating shaft away from the inner cavity. An annular cavity is defined between the rotating shaft and the cavity body. Multiple blades divide the annular cavity into multiple compression cavities. The annular cavity includes a first annular cavity portion and a second annular cavity portion connected to the first annular cavity portion. When two adjacent blades slide within the first annular cavity portion, the volume of the compression cavity formed between the two adjacent blades remains constant. When two adjacent blades slide within the second annular cavity portion, the volume of the compression cavity formed between the two adjacent blades becomes smaller than the constant volume of the compression cavity formed when the two adjacent blades slide within the first annular cavity portion, and it communicates with the oil outlet channel. The volume of the compression chamber changes as the impeller rotating mechanism rotates; when the volume of the compression chamber decreases, the lubricating oil inside is forced into the oil outlet channel to supply oil to the compressor. The cavity includes: The lower cavity has a circular open mouth; and A top cover plate is fitted over the opening of the circular oral cavity; and A protrusion is provided in the lower cavity, and the upper cover plate presses the protrusion into the circular opening. The protrusion has an inner arc-shaped surface that protrudes in a direction away from the central axis of the lower cavity. The starting and ending edges of the inner arc-shaped surface are in contact with the inner wall of the circular opening. The circular opening, the inner arc-shaped surface, and the upper cover plate define the inner cavity. The rotating shaft is a stepped shaft, and a first shaft section, an intermediate shaft section, a filter section, and a second shaft section are sequentially arranged along the central axis of the rotating shaft. The first shaft section is provided with the insertion interface and extends into the upper cover plate. Multiple blades are provided on the outer periphery of the intermediate shaft section, and multiple filter holes are provided on the outer periphery of the filter section. The second shaft section is pivotally connected to the lower cavity. A central flow channel hole is provided through the intermediate shaft section, the first shaft section, and the filter section. One end of the central flow channel hole is connected to the filter hole, and the other end is connected to the insertion interface. When the volume of the compression chamber decreases, the lubricating oil in it is forced into the multiple filter holes for filtration before entering the central flow channel hole. The oil outlet channel includes the filter hole and the central flow channel hole.

2. The oil conveying device according to claim 1, characterized in that, The cross-section of the annular cavity is circular, the inner ring of the annular cavity is circular, and the outer ring of the annular cavity includes a first arc segment and a second arc segment connected to the first arc segment. The radius of the first arc segment is D1, and the distance D2 from the center of the first arc segment to the second arc segment is less than or equal to D1. The arc-shaped cavity wall where the first arc segment is located is the outer wall of the first annular cavity, and the arc-shaped cavity wall where the second arc segment is located is the outer wall of the second annular cavity. The blade slides within the outer wall of the first annular cavity or the outer wall of the second annular cavity.

3. The oil conveying device according to claim 1, characterized in that, The blade is a deformable blade. The blade does not deform when sliding in the first annular cavity. The volume of the compression cavity between two adjacent blades remains constant. The blade deforms when sliding in the second annular cavity.

4. The oil conveying device according to claim 3, characterized in that, The deformable blade includes: Flexible parts deform under stress; and A circular head is disposed at one end of the flexible portion and contacts the annular cavity; and The tail is located at the other end of the flexible part and is connected to the rotating shaft.

5. The oil conveying device according to claim 1, characterized in that, The blade is a telescopic blade with a telescopic function. One end of the telescopic blade is a connecting end, which is connected to the rotating shaft, and the other end of the telescopic blade is a telescopic end, which contacts the annular cavity.

6. The oil conveying device according to claim 1, characterized in that, The blade is a sliding blade, and a radial sliding hole is provided on the outer circumference of the rotating shaft. The sliding blade is slidably disposed in the corresponding radial sliding hole. A spring is also provided in the radial sliding hole, and the spring can press the sliding blade onto the annular cavity.

7. The oil conveying device according to claim 1, characterized in that, The bottom of the circular opening is provided with a first positioning groove, and the upper cover is provided with a second positioning groove corresponding to the first positioning groove. One end of the protrusion is located in the first positioning groove, and the other end is located in the second positioning groove.

8. The oil conveying device according to claim 1, characterized in that, The lower cavity is provided with an oil suction port, which is connected to the first annular cavity and is used to provide lubricating oil to the compression cavity.

9. The oil conveying device according to claim 1, characterized in that, The circular opening is a stepped cavity, and along the central axis of the circular opening are arranged a series of concave layers with gradually decreasing inner diameters: a first concave layer, a second concave layer, a third concave layer, and a fourth concave layer. The first concave layer is used to install the upper cover plate, the second concave layer is used to install the intermediate shaft section and multiple blades, the third concave layer is used to install the filter section, and the fourth concave layer is used to install the second shaft section. The bottom of the second concave layer is provided with a connecting groove that communicates with the third concave layer, and the connecting groove communicates with the compression chamber when the volume decreases.

10. A compressor pump body assembly, characterized in that, include: Compressor pump body, used to compress air; as well as The oil conveying device as described in any one of claims 1 to 9; The compressor main shaft of the compressor pump body is connected to the oil delivery device to provide lubricating oil to the compressor pump body.

11. A compressor, characterized in that, include: Housing assembly; as well as The motor is housed within the housing assembly; as well as The compressor pump assembly as claimed in claim 10 is connected to the output shaft of the motor; and The separator assembly is connected to the air inlet of the compressor pump body assembly.

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