Oil pumps, compressors and air conditioners

Abstract

The application provides an oil pump, a compressor and an air conditioner, which comprise a first rotating part, a second rotating part and a partition part; the first rotating part is internally provided with a containing cavity, and the second rotating part and the partition part are arranged in the containing cavity; a protruding part is arranged on the inner wall of the first rotating part, and the end of the protruding part, which is away from the inner wall of the first rotating part, is connected with the partition part, so as to separate the containing cavity into at least two operation rooms, and each operation room is isolated from each other; the second rotating part is connected with the first rotating part, so that the second rotating part drives the first rotating part to rotate. The application provides an oil pump, a compressor and an air conditioner, which can increase the effective pumping volume of the oil pump, can realize the delivery of large oil volume in a short time, reduces the friction and wear between each friction pair in the lubricated equipment, and enhances the reliability of the lubricated equipment.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of air conditioning, and particularly relates to an oil pump, a compressor and an air conditioner. BACKGROUND

[0002] The existing compressor supplies lubricating oil to each friction pair of the compressor through a gear oil pump, which can prevent wear and tear of parts and take away friction heat, thereby improving the overall reliability of the compressor. However, in the existing gear oil pump, most of the effective oil pumping volume is occupied by the gear teeth, so that large oil volume cannot be delivered in a short time. The friction pairs of the scroll compressor that need to be lubricated are far away from the oil pool, which increases the friction and wear between the friction pairs of the scroll compressor at the initial stage of starting, and seriously affects the reliability. SUMMARY

[0003] Therefore, the technical problem to be solved by the application is to provide an oil pump that can increase the effective oil pumping volume of the oil pump, can deliver large oil volume in a short time, reduces the friction and wear between the friction pairs of the to-be-lubricated equipment, and enhances the reliability of the to-be-lubricated equipment.

[0004] In order to solve the above problems, the application provides an oil pump, comprising a first rotating part, a second rotating part and a partition part.

[0005] The first rotating part is provided with a cavity, and the second rotating part and the partition part are arranged in the cavity.

[0006] A protruding part is arranged on the inner wall of the first rotating part, and one end of the protruding part away from the inner wall of the first rotating part is connected with the partition part, so as to divide the cavity into at least two operation rooms, and the operation rooms are isolated from each other.

[0007] The second rotating part is connected with the first rotating part, so that the second rotating part drives the first rotating part to rotate.

[0008] Optionally, the partition part is provided with a first groove, and a part of the second rotating part is arranged in the first groove.

[0009] Optionally, the second rotating part is sealingly connected with the partition part.

[0010] Optionally, one side of the second rotating part away from the partition part is sealingly connected with the first rotating part.

[0011] Optionally, the partition part is crescent-shaped.

[0012] Optionally, the second rotating part is provided with a second groove, when the protruding part rotates to the area where the second rotating part is located, the protruding part is inserted into the second groove and sealingly connected with the groove wall of the second groove.

[0013] Optionally, the second groove decreases in cross section in a direction from a groove opening of the second groove to a groove bottom of the second groove.

[0014] Optionally, the protruding part decreases in cross section in a direction from an inner wall of the first rotating part to the partition part.

[0015] Optionally, a first transmission part is arranged on the first rotating part, a second transmission part is arranged on the second rotating part, and the first transmission part cooperates with the second transmission part to drive the first rotating part to rotate with the second rotating part.

[0016] The protruding part has a length L1 in a direction from the inner wall of the first rotating part to the partition part, the first transmission part has a length L2 in the direction from the inner wall of the first rotating part to the partition part, and L1 is greater than L2.

[0017] Optionally, the number of the protruding parts is two, and the two protruding parts are arranged on the same diameter of the first rotating part.

[0018] Optionally, the oil pump further comprises a housing, the housing is internally provided with a mounting groove, the first rotating part, the second rotating part and the partition part are arranged in the mounting groove, the mounting groove is provided with an oil inlet channel and an oil storage cavity, the working chamber in the oil suction condition is in communication with the oil inlet channel, the working chamber in the oil discharge condition is in communication with the oil storage cavity, and the oil in the oil storage cavity can be discharged out of the oil pump.

[0019] Optionally, the oil inlet channel and the oil storage cavity are arranged on the groove bottom of the mounting groove.

[0020] Optionally, the oil storage cavity comprises an arc segment and an oil discharge segment, and the oil discharge segment is located at the center of the circle where the arc segment is located.

[0021] In another aspect of the present application, a compressor is provided, which comprises the oil pump as described above.

[0022] Optionally, the compressor comprises a crankshaft, the crankshaft is connected with the second rotating part to drive the second rotating part to rotate.

[0023] Optionally, the compressor further comprises a connecting pipe, the crankshaft is connected with the second rotating part through the connecting pipe, the crankshaft and the connecting pipe are internally provided with an oil discharge channel, when the oil pump comprises an oil storage cavity and the oil storage cavity comprises an oil discharge segment, the oil discharge channel is in communication with the oil discharge segment.

[0024] Optionally, the compressor further comprises an oil pool, when the oil pump comprises an oil storage cavity and the oil storage cavity comprises an oil inlet channel, the oil inlet channel is in communication with the oil pool.

[0025] In another aspect of the present application, an air conditioner is provided, which comprises the oil pump as described above or comprises the compressor as described above.

[0026] Advantages

[0027] The oil pump provided in the embodiments of the present application can increase the effective pumping volume of the oil pump, can realize the delivery of large oil volume in a short time, reduces the friction and wear between each friction pair in the lubricated equipment, and enhances the reliability of the lubricated equipment. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is an exploded view of the oil pump of the embodiments of the present application;

[0029] Figure 2 is a top view of the oil pump of the embodiments of the present application without the cover plate;

[0030] Figure 3 is a first process state diagram of the oil pump of the embodiments of the present application;

[0031] Figure 4 is a second process state diagram of the oil pump of the embodiments of the present application;

[0032] Figure 5 is a third process state diagram of the oil pump of the embodiments of the present application;

[0033] Figure 6 is Figure 5 is a sectional view at A-A in FIG. 1;

[0034] Figure 7 is Figure 6 is an enlarged view at B in FIG. 1.

[0035] Reference signs are represented as:

[0036] 1, first rotating member; 11, protrusion; 2, second rotating member; 21, second groove; 3, partition member; 4, housing; 41, oil inlet passage; 42, oil storage cavity; 43, cover plate. DETAILED DESCRIPTION

[0037] For reference Figures 1 to 7As shown, according to the embodiment of the present application, an oil pump comprises a first rotating part 1, a second rotating part 2 and a partition part 3; the first rotating part 1 is provided with a cavity, and the second rotating part 2 and the partition part 3 are arranged in the cavity; the inner wall of the first rotating part 1 is provided with a protruding part 11, and the end of the protruding part 11 away from the inner wall of the first rotating part 1 is connected with the partition part 3, so as to separate the cavity into at least two working chambers, and the working chambers are isolated from each other; the second rotating part 2 is connected with the first rotating part 1, so that the second rotating part 2 drives the first rotating part 1 to rotate. By arranging the partition part 3 and the protruding part 11, the cavity is separated into at least two working chambers, the space occupied by the second rotating part 2 is reduced, and the space occupied by the partition part 3 and the second rotating part 2 is far less than the space occupied by the gear in the prior art, thereby effectively increasing the effective oil pumping volume of the oil pump, realizing the delivery of large oil volume in a short time, reducing the friction and wear between each friction pair in the equipment to be lubricated, taking away more heat generated by the friction between the friction pairs, enhancing the reliability of the equipment to be lubricated, and reducing the production cost and the weight of the whole machine under the premise of ensuring the oil supply.

[0038] Further, the protruding part 11 is integrally formed with the first rotating part 1.

[0039] Further, the first rotating part 1 is in a ring structure, and the cavity is the internal space surrounded by the first rotating part 1.

[0040] Further, in one embodiment, the first rotating part 1 is in a circular ring shape, and the second rotating part 2 is in a circular shape.

[0041] Further, one end of the protruding part 11 is arranged on the inner wall of the first rotating part 1, and the other end extends to the inside of the first rotating part 1.

[0042] Further, the working chambers are arranged along the circumferential direction of the first rotating part 1 and the partition part 3, the working chambers are arranged on the outside of the partition part 3, and the working chambers are arranged on the inside of the first rotating part 1.

[0043] Further, the second rotating part 2 is arranged eccentrically with the first rotating part 1.

[0044] Further, the second rotating part 2 is located on the rotation path of the working chamber, and with the rotation of the first rotating part, the volume of the working chamber containing oil gradually decreases, thereby causing the oil in the working chamber to be discharged. After the oil in the working chamber is discharged, new oil is sucked into the working chamber, forming a cycle.

[0045] The partition part 3 is provided with a first groove, and a part of the second rotating part 2 is arranged in the first groove. By arranging the first groove, the space occupied by the partition part 3 and the second rotating part 2 is further reduced, and the effective oil pumping volume of the oil pump is effectively increased.

[0046] Further, the position of the partition member 3 is fixed, and the opening of the first groove faces the second rotating member 2.

[0047] The second rotating member 2 and the partition member 3 are in sealing contact, preventing oil from entering the evacuated working chamber.

[0048] Further, when the second rotating member 2 rotates into the second groove 21, the outer wall of the second rotating member 2 is in sealing contact with the groove wall of the second groove 21, preventing oil from flowing into the evacuated working chamber.

[0049] The side of the second rotating member 2 away from the partition member 3 is in sealing contact with the first rotating member 1, preventing oil from entering the evacuated working chamber.

[0050] Further, as shown in Figures 3 to 5 the left side of the second rotating member 2 is in sealing contact with the first rotating member 1, and the right side of the second rotating member 2 is in sealing contact with the partition member 3.

[0051] The partition member 3 is crescent-shaped, effectively increasing the effective pumping volume of the oil pump while ensuring the sealing between the second rotating member 2 and the partition member 3.

[0052] Further, the partition member 3 is generally an arc.

[0053] The second rotating member 2 is provided with a second groove 21, when the protruding part 11 rotates to the area where the second rotating member 2 is located, the protruding part 11 is inserted into the second groove 21 and is in sealing contact with the groove wall of the second groove 21, by setting the second groove 21, when the protruding part 11 rotates to the area where the second rotating member 2 is located, the protruding part 11 is avoided, effectively ensuring the smooth rotation of the first rotating member 1 and the second rotating member 2.

[0054] Further, when the protruding part 11 rotates to the area where the second rotating member 2 is located, the protruding part 11 is inserted into the second groove 21. When the protruding part 11 rotates to the area away from the second rotating member 2, the protruding part 11 is separated from the second groove 21.

[0055] The cross section of the second groove 21 decreases along the direction from the groove opening to the groove bottom of the second groove 21, and the cross section of the protruding part 11 decreases along the direction from the inner wall of the first rotating member 1 to the partition member 3, ensuring stable connection of the protruding part 11 with the first rotating member 1 while further reducing the space occupied by the protruding part 11 and increasing the effective pumping volume of the oil pump.

[0056] Further, the shape of the second groove 21 is the same as that of the protruding part 11.

[0057] The first rotating part 1 is provided with a first transmission part, the second rotating part 2 is provided with a second transmission part, the first transmission part cooperates with the second transmission part to drive the second rotating part 2 to rotate the first rotating part 1, the length of the protruding part 11 along the direction from the inner wall of the first rotating part 1 to the partition part 3 is L1, the length of the first transmission part along the direction from the inner wall of the first rotating part 1 to the partition part 3 is L2, L1 is greater than L2, the first transmission part and the second transmission part are arranged to ensure that the second rotating part 2 can stably drive the first rotating part 1 to rotate. By making L1 greater than L2, the space occupation in the cavity is reduced, and the volume of the shape operation chamber is maximized.

[0058] Further, by making L1 greater than L2, the number of formed operation chambers is also ensured to be the same as the number of protruding parts 11.

[0059] Further, the first transmission part and the second transmission part are both gear teeth, that is, the first rotating part 1 is a gear, the second rotating part 2 is a gear, and the first transmission part is engaged with the second transmission part.

[0060] Further, the second rotating part 2 rotates one revolution, and the first rotating part 1 rotates one-half revolution. In the present embodiment, the angular velocity of the first rotating part 1 is half the acceleration of the external gear in the prior art. At the same time, due to the increase in the effective pump oil volume, the contact area of the gear and the base is reduced, greatly reducing the friction power consumption of the oil pump.

[0061] The number of protruding parts 11 is two, and the two protruding parts 11 are arranged on the same diameter of the first rotating part 1, ensuring that the volumes and shapes of the two operation chambers are the same, effectively ensuring the stability of the oil pumping.

[0062] Further, the two operation chambers are symmetrically arranged about the center of the first rotating part 1.

[0063] The oil pump further comprises a housing 4, the housing 4 is provided with a mounting groove, the first rotating part 1, the second rotating part 2 and the partition part 3 are arranged in the mounting groove, the mounting groove is provided with an oil inlet channel 41 and an oil storage cavity 42, the operation chamber in the oil suction working condition is communicated with the oil inlet channel 41, the operation chamber in the oil discharge working condition is communicated with the oil storage cavity 42, and the oil in the oil storage cavity 42 can be discharged out of the oil pump. By arranging the housing 4, the first rotating part 1, the second rotating part 2 and the partition part 3, the oil pump has self-sealing property and is easy to process, and the cavitation phenomenon caused by continuous meshing compression of the gear teeth can be reduced.

[0064] Further, by arranging the oil inlet channel 41 and the oil storage cavity 42, the oil suction and discharge are realized.

[0065] Further, the housing 4 further comprises a cover plate 43, the cover plate 43 is arranged on the opening of the mounting groove to seal the mounting groove.

[0066] Further, the partition piece 3 is integrally processed with the cover plate 43 or the shell, facilitating the fixation of the partition piece 3.

[0067] The oil inlet channel 41 and the oil storage cavity 42 are arranged on the groove bottom of the mounting groove, facilitating the oil suction and discharge.

[0068] The oil storage cavity 42 comprises an arc segment and an oil discharge segment, and the oil discharge segment is located at the center of the circle where the arc segment is located. The arc segment is arranged to ensure the smoothness of the oil discharge from the working chamber. The oil discharge segment is arranged to ensure the smoothness of the oil discharge from the oil pump.

[0069] Further, the arc segment is in communication with the oil discharge segment, and the arc segment and the oil discharge segment form the oil storage cavity 42.

[0070] Further, the arc segment is arranged along the circumferential direction of the partition piece 3.

[0071] Further, the oil discharge segment is arranged opposite to the oil discharge port of the oil pump.

[0072] In another aspect of the embodiment, a compressor is provided, comprising the oil pump as described above.

[0073] The compressor comprises a crankshaft, which is connected with the second rotating member 2 to drive the second rotating member 2 to rotate.

[0074] The compressor further comprises a connecting pipe 66, the crankshaft is connected with the second rotating member 2 through the connecting pipe 66, and the crankshaft and the connecting pipe 66 are provided with an oil discharge channel. When the oil pump comprises the oil storage cavity 42, and the oil storage cavity 42 comprises an oil discharge segment, the oil discharge channel is in communication with the oil discharge segment, ensuring that the oil in the oil discharge segment can be smoothly discharged to the parts that need to be lubricated in the compressor.

[0075] Further, the crankshaft is in interference fit with the connecting pipe 66, and the connecting pipe 66 passes through the opening of the cover plate 43 and is fixed with the second rotating member 2 through the D key.

[0076] Further, the oil pump is arranged on the side of the connecting pipe 66 away from the crankshaft.

[0077] The compressor further comprises an oil pool. When the oil pump comprises the oil storage cavity 42, and the oil storage cavity 42 comprises the oil inlet channel 41, the oil inlet channel 41 is in communication with the oil pool, ensuring that the oil in the oil pool can be sucked into the oil pump.

[0078] Further, the oil pool is arranged on the side of the oil pump away from the crankshaft.

[0079] In operation, the lubricating oil is sucked from the oil pool of the scroll compressor through the oil inlet channel 41, at this time, the crankshaft rotates to drive the second rotating member 2 to rotate, the second rotating member 2 rotates with the first rotating member 1, and the lubricating oil is delivered to the oil storage cavity 42 by the first rotating member 1, and then the lubricating oil is pumped into the oil outlet channel under the centrifugal force of the crankshaft rotation, and is pumped to each friction pair for lubrication.

[0080] In another aspect of the embodiment, an air conditioner is provided, which comprises the oil pump or the compressor as described above.

[0081] The oil pump provided in the embodiment can increase the effective pumping volume of the oil pump, can realize large oil delivery in a short time, reduces the friction and wear between each friction pair in the lubricated equipment, enhances the reliability of the lubricated equipment, realizes at least 50% increase in the oil pumping amount under the same oil pump volume and the same number of crankshaft rotations, greatly shortens the time for which the friction pairs are not lubricated at the initial stage of starting, can take away more heat generated by the friction between the friction pairs, improves the reliability of the whole machine, has self-sealing property and is easy to process, can reduce the cavitation phenomenon caused by the continuous meshing compression of the gear teeth, and has the characteristics of self-sealing property and easy processing.

[0082] It is easy for those skilled in the art to understand that the above advantageous modes can be freely combined and superimposed without conflict.

[0083] The above is only a preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above is only a preferred embodiment of the present application, and it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications shall be regarded as the protection scope of the present application.

Claims

1. An oil pump characterized by comprising: The oil pump comprises a first rotating part (1), a second rotating part (2) and a partition part (3); The first rotating part (1) is internally provided with a cavity, and the second rotating part (2) and the partition part (3) are arranged in the cavity; The inner wall of the first rotating part (1) is provided with a protruding part (11), and the end of the protruding part (11) away from the inner wall of the first rotating part (1) is connected with the partition part (3) to divide the cavity into at least two operation rooms, and the operation rooms are isolated from each other; The second rotating part (2) is connected with the first rotating part (1) to drive the first rotating part (1) to rotate; The contact surface between the second rotating part (2) and the partition part (3) is sealedly connected; and the side of the second rotating part (2) away from the partition part (3) is dynamically sealedly connected with the first rotating part (1); The oil pump further comprises a shell (4), the shell (4) is internally provided with a mounting groove, the first rotating part (1), the second rotating part (2) and the partition part (3) are arranged in the mounting groove, the mounting groove is provided with an oil inlet channel (41) and an oil storage cavity (42), the operation room in the oil suction working condition is communicated with the oil inlet channel (41), the operation room in the oil discharge working condition is communicated with the oil storage cavity (42), and the oil in the oil storage cavity (42) can be discharged out of the oil pump; and the oil inlet channel (41) and the oil storage cavity (42) are arranged on the groove bottom of the mounting groove.

2. The oil pump according to claim 1, characterized by The partition part (3) is provided with a first groove, and a part of the second rotating part (2) is arranged in the first groove.

3. The oil pump of claim 1, wherein The partition part (3) is in the shape of a crescent moon.

4. The oil pump of claim 1, wherein The second rotating part (2) is provided with a second groove (21), when the protruding part (11) rotates to the area where the second rotating part (2) is located, the protruding part (11) is inserted into the second groove (21) and is sealedly connected with the groove wall of the second groove (21).

5. The oil pump of claim 4, wherein The second groove (21) is decreasing in cross section along the direction from the groove opening to the groove bottom of the second groove (21).

6. The oil pump of claim 1, wherein The protruding part (11) is decreasing in cross section along the direction from the inner wall of the first rotating part (1) to the partition part (3).

7. The oil pump of claim 1, wherein The first rotating part (1) is provided with a first transmission part, the second rotating part (2) is provided with a second transmission part, and the first transmission part is matched with the second transmission part to drive the first rotating part (1) to rotate by the second rotating part (2); The length of the protruding part (11) along the direction from the inner wall of the first rotating part (1) to the partition part (3) is L1, the length of the first transmission part along the direction from the inner wall of the first rotating part (1) to the partition part (3) is L2, and L1 is greater than L2.

8. The oil pump of claim 1, wherein The number of the protruding parts (11) is two, and the two protruding parts (11) are arranged on the same diameter of the first rotating part (1).

9. The oil pump of claim 1, wherein The oil storage cavity (42) comprises an arc segment and an oil discharge segment, and the oil discharge segment is located at the center of the circle where the arc segment is located.

10. A compressor characterized by, The oil pump according to any one of claims 1-9.

11. The compressor of claim 10, wherein, The compressor further comprises a connecting pipe, the crankshaft is connected with the second rotating member (2) through the connecting pipe, and the crankshaft and the connecting pipe are provided with an oil discharge channel.

12. The compressor of claim 11, wherein, The compressor further comprises an oil pool, and when the oil pump comprises an oil storage cavity (42) and the oil storage cavity (42) comprises an oil inlet channel (41), the oil inlet channel (41) is communicated with the oil pool.

13. The compressor of claim 11, wherein, The compressor according to any one of claims 10-13.

14. An air conditioner characterized by comprising: The oil pump according to any one of claims 1-9 or the compressor according to any one of claims 10-13.

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