CN112460458A

CN112460458A - Oil pump, compressor and air conditioner

Info

Publication number: CN112460458A
Application number: CN202011412002.3A
Authority: CN
Inventors: 刘国良; 魏会军; 曹贞文; 刘靖; 朱红伟
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai; Zhuhai Gree Energy Saving Environmental Protection Refrigeration Technology Research Center Co Ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-03-09

Abstract

The application provides an oil pump, a compressor and an air conditioner, which comprise a first rotating piece, a second rotating piece and a partition piece; a containing cavity is arranged in the first rotating part, 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, one end, far away from the inner wall of the first rotating part, of the protruding part is connected with the partition part so as to divide the containing cavity into at least two working chambers, and the working chambers are isolated from each other; the second rotating piece is connected with the first rotating piece, so that the second rotating piece drives the first rotating piece to rotate. The application provides an oil pump, compressor and air conditioner can increase the effective pump oil volume of oil pump, can realize the transport of the big oil mass in the short time, has reduced the friction and wear between each friction pair in treating lubricated equipment, has strengthened the reliability of treating lubricated equipment.

Description

Oil pump, compressor and air conditioner

Technical Field

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

Background

The existing compressor supplies lubricating oil to each friction pair of the compressor through the gear oil pump, can prevent parts from being worn and take away friction heat, and improves the overall reliability of the compressor. However, most of the effective oil pumping volume in the existing gear oil pump is occupied by gear teeth, large oil quantity can not be conveyed in a short time, the friction pair of the scroll compressor needing to be lubricated is far away from an oil pool, the friction wear among the friction pairs of the scroll compressor at the initial starting stage is increased, and the reliability is seriously influenced.

Disclosure of Invention

Therefore, the technical problem that this application will be solved lies in providing an oil pump, can increase the effective oil pumping volume of oil pump, can realize the transport of the big oil mass in the short time, has reduced the frictional wear between each friction pair in waiting to lubricate equipment, has strengthened the reliability of waiting to lubricate equipment.

In order to solve the above problems, the present application provides an oil pump including a first rotating member, a second rotating member, and a partition member;

a containing cavity is arranged in the first rotating part, 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, one end, far away from the inner wall of the first rotating part, of the protruding part is connected with the partition part so as to divide the containing cavity into at least two working chambers, and the working chambers are isolated from each other;

the second rotating piece is connected with the first rotating piece, so that the second rotating piece drives the first rotating piece to rotate.

Optionally, a first groove is provided on the partition member, and a part of the second rotating member is disposed in the first groove.

Optionally, the second rotating member is in sealing connection with the partition member.

Optionally, a side of the second rotating member remote from the partition member is in sealing contact with the first rotating member.

Optionally, the partition is crescent shaped.

Optionally, a second groove is provided on the second rotating member, and when the protruding portion rotates to the area where the second rotating member is located, the protruding portion is inserted into the second groove and is in sealing contact with a groove wall of the second groove.

Optionally, the second groove has a decreasing cross-section in a direction from the notch of the second groove to the groove bottom of the second groove.

Optionally, the protrusion is tapered in section in a direction from an inner wall of the first rotating member toward the partition member.

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 is matched with the second transmission part, so that the second rotating part drives the first rotating part to rotate;

the length of the protruding portion in the direction from the inner wall of the first rotating member toward the spacer is L1, the length of the first transmission portion in the direction from the inner wall of the first rotating member toward the spacer is L2, and L1 is greater than L2.

Optionally, the number of the protrusions is two, and the two protrusions are arranged on the same diameter of the first rotating member.

Optionally, the oil pump still includes the casing, be provided with the mounting groove in the casing, first rotating member the second rotating member with separate the piece setting and be in the mounting groove, be provided with oil feed passageway and oil storage chamber on the mounting groove, be in the oil absorption operating mode the operation room with the oil feed passageway is linked together, is in the oil extraction operating mode the operation room with the oil storage chamber is linked together, fluid in the oil storage chamber can discharge outside the oil pump.

Optionally, the oil inlet channel with the oil storage cavity is seted up on the tank bottom of mounting groove.

Optionally, the oil storage cavity comprises an arc-shaped section and an oil discharge section, and the oil discharge section is located at the center of a circle where the arc-shaped section is located.

In another aspect of the present application, there is provided a compressor including the oil pump as described above.

Optionally, the compressor includes a crankshaft, and the crankshaft is connected to the second rotating member to drive the second rotating member to rotate.

Optionally, the compressor still includes the connecting pipe, the bent axle passes through the connecting pipe with the second rotating member is connected, the bent axle with be provided with the oil extraction passageway in the connecting pipe, work as the oil pump includes the oil storage chamber, when the oil storage chamber includes the oil extraction section, the oil extraction passageway with the oil extraction section intercommunication.

Optionally, the compressor still includes the oil bath, works as the oil pump includes the oil storage chamber, when the oil storage chamber includes the oil feed passageway, the oil feed passageway with the oil bath is linked together.

In another aspect of the present application, there is provided an air conditioner including the oil pump as described above or including the compressor as described above.

Advantageous effects

The oil pump provided by the embodiment of the invention can increase the effective oil pumping volume of the oil pump, can realize the delivery of large oil quantity in a short time, reduces the friction wear among friction pairs in equipment to be lubricated, and enhances the reliability of the equipment to be lubricated.

Drawings

FIG. 1 is an exploded view of an oil pump according to an embodiment of the present application;

FIG. 2 is a top view of an oil pump of an embodiment of the present application with a cover plate removed;

FIG. 3 is a first process state diagram of an oil pump of an embodiment of the present application;

FIG. 4 is a second process state diagram of the oil pump of the embodiment of the present application;

FIG. 5 is a third process state diagram of the oil pump of the embodiment of the present application;

FIG. 6 is a cross-sectional view taken at A-A of FIG. 5;

fig. 7 is an enlarged view at B in fig. 6.

The reference numerals are represented as:

1. a first rotating member; 11. a protrusion; 2. a second rotating member; 21. a second groove; 3. a spacer; 4. a housing; 41. an oil inlet channel; 42. an oil storage chamber; 43. a cover plate; 5. a crankshaft; 6. and (4) connecting the pipes.

Detailed Description

Referring to fig. 1 to 7 in combination, according to an embodiment of the present application, an oil pump includes a first rotating member 1, a second rotating member 2, and a partition member 3; a containing cavity is arranged in the first rotating part 1, and the second rotating part 2 and the partition part 3 are arranged in the containing cavity; the inner wall of the first rotating member 1 is provided with a protruding part 11, one end of the protruding part 11, which is far away from the inner wall of the first rotating member 1, is connected with the partition member 3 so as to divide the accommodating cavity into at least two working chambers, and the working chambers are isolated from each other; the second rotating member 2 is connected to the first rotating member 1, so that the second rotating member 2 drives the first rotating member 1 to rotate. Through setting up partition member 3 and protruding portion 11, in order to hold the chamber and separate for two operation rooms at least, the space that the second rotating member 2 occupy has been reduced, the common space that occupies of partition member 3 and second rotating member 2 simultaneously also is less than the shared space of gear among the prior art far away, and then effectively increase the effective pump oil volume of oil pump, can realize the transport of big oil mass in the short time, frictional wear between each friction pair in having reduced treating the lubricating apparatus, can take away the heat that more friction pair intercorrelations friction produced, the reliability of treating the lubricating apparatus has been strengthened, and under the prerequisite of guaranteeing the oil mass supply, manufacturing cost has been reduced, whole machine weight has been reduced.

Further, the protruding portion 11 is integrally formed with the first rotating member 1.

Further, the first rotating member 1 is of an annular structure, and the cavity is an inner space surrounded by the first rotating member 1.

Further, in one embodiment, the first rotating member 1 has a circular ring shape, and the second rotating member 2 has a circular shape.

Further, one end of the protrusion 11 is disposed on the inner wall of the first rotating member 1, and the other end extends toward the inside of the first rotating member 1.

Further, the working chamber is arranged along the circumferential direction of the first rotating member 1 and the partition member 3, the working chamber is arranged on the outer side of the partition member 3, and the working chamber is arranged on the inner side of the first rotating member 1.

Further, the second rotation member 2 is eccentrically disposed from the first rotation member 1.

Further, the second rotary member 2 is located on the rotation path of the working chamber, and the volume of the working chamber in which the oil is stored is gradually reduced as the first rotation is performed, thereby discharging the oil from the working chamber. After the working chamber discharges oil, new oil is sucked into the working chamber to form circulation.

Be provided with first recess on the partition member 3, a part setting of second rotating member 2 is in first recess, through setting up first recess, has further reduced the shared space of partition member 3 and second rotating member 2, effectively increases the effective pumping oil volume of oil pump.

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

The second rotating part 2 is connected with the partition part 3 in a sealing way, so that oil is prevented from entering the emptied working chamber.

Further, when the second rotating member 2 rotates into the second groove 21, the outer side wall of the second rotating member 2 is in fit sealing with the groove wall of the second groove 21, and oil is prevented from flowing into the emptied working chamber.

One side of the second rotating member 2, which is far away from the partition member 3, is in sealing connection with the first rotating member 1, so that oil is prevented from entering the emptied working chamber.

Further, as shown in fig. 3 to 5, the left side of the second rotary member 2 is in sealing contact with the first rotary member 1, and the right side of the second rotary member 2 is in sealing contact with the partition member 3.

The partition member 3 is crescent, so that the sealing performance between the second rotating member 2 and the partition member 3 is ensured while the effective oil pumping volume of the oil pump is effectively increased.

Further, the partition member 3 is substantially a major arc.

The second groove 21 is formed in the second rotating member 2, when the protruding portion 11 rotates to the area where the second rotating member 2 is located, the protruding portion 11 is inserted into the second groove 21 and is in sealing connection with the groove wall of the second groove 21, and by means of the second groove 21, when the protruding portion 11 rotates to the area where the second rotating member 2 is located, the protruding portion 11 is avoided, and smooth rotation of the first rotating member 1 and the second rotating member 2 is effectively guaranteed.

Further, when the protrusion 11 is rotated to the area where the second rotating member 2 is located, the protrusion 11 is inserted into the second groove 21. When the protrusion 11 is rotated to be disengaged from the area where the second rotation member 2 is located, the protrusion 11 is disengaged from the second groove 21.

The section of the second groove 21 decreases progressively along the direction from the notch of the second groove 21 to the bottom of the second groove 21, and the section of the protruding part 11 decreases progressively along the direction from the inner wall of the first rotating member 1 to the partition member 3, so that the space occupied by the protruding part 11 is further reduced and the effective oil pumping volume of the oil pump is increased while the protruding part 11 is stably connected with the first rotating member 1.

Further, the shape of the second groove 21 is the same as the formation of the projection 11.

The first rotating piece 1 is provided with a first transmission part, the second rotating piece 2 is provided with a second transmission part, and the first transmission part is matched with the second transmission part so that the second rotating piece 2 drives the first rotating piece 1 to rotate; the length of protruding portion 11 along the direction from the inner wall of first rotor 1 to wall 3 is L1, and the length of first transmission part along the direction from the inner wall of first rotor 1 to wall 3 is L2, and L1 is greater than L2, through setting up first transmission part and second transmission part, guarantees that the first rotor 1 of drive that second rotor 2 can be stable rotates. By making L1 larger than L2, the space occupied in the cavity is reduced, ensuring the maximization of the volume of the shaped working chamber.

Further, by making L1 larger than L2, it is also ensured that the number of working chambers formed is the same as the number of projections 11.

Further, first transmission portion and second transmission portion are the teeth of a cogwheel, and that is first rotating member 1 is the gear, and second rotating member 2 is the gear, and first transmission portion and second transmission portion mesh mutually.

Further, second rotating member 2 rotates a week, and first rotating member 1 rotates half a week, and the angular velocity of first rotating member 1 in this embodiment is half of the external gear acceleration among the prior art, simultaneously because the increase of effective pump oil volume has reduced the area of contact of gear with the base, has greatly reduced the friction consumption of oil pump.

The quantity of protruding portion 11 is two, and two protruding portions 11 set up on the same diameter of first rotating member 1, have guaranteed that two operation rooms's volume, shape are the same, have effectively guaranteed the stability of pump oil.

Further, the two working chambers are arranged symmetrically with respect to the center of the first rotary member 1.

The oil pump still includes casing 4, is provided with the mounting groove in the casing 4, and first rotating member 1, second rotating member 2 and partition 3 set up in the mounting groove, are provided with oil feed passageway 41 and oil storage chamber 42 on the mounting groove, and the operation room that is in the oil absorption operating mode is linked together with oil feed passageway 41, and the operation room that is in the oil extraction operating mode is linked together with oil storage chamber 42, and outside the fluid in oil storage chamber 42 can the discharge oil pump. Through setting up casing 4, first rotating member 1, second rotating member 2 and wall piece 3, make the oil pump possess self sealedly nature and processing easily, can reduce the cavitation phenomenon that causes the teeth of a cogwheel by constantly meshing compression.

Further, by providing the oil inlet passage 41 and the oil storage chamber 42, the suction and discharge of oil is realized.

Further, the housing 4 further includes a cover plate 43, and the cover plate 43 covers the opening of the mounting groove to seal the mounting groove.

Further, the partition member 3 and the cover plate 43 or the housing are integrally processed, which facilitates the fixation of the partition member 3.

The oil inlet channel 41 and the oil storage chamber 42 are arranged on the bottom of the mounting groove, so that oil can be sucked and discharged conveniently.

Oil storage chamber 42 includes the segmental arc and arranges the oil section, arranges the oil section and is located the centre of a circle department of segmental arc place circle, through setting up the segmental arc, has guaranteed the smooth and easy when arranging the oil section from the operation room oil extraction, through setting up the oil section of arranging, has guaranteed the smooth and easy nature when arranging the oil from the oil pump oil extraction.

Further, the arc section is communicated with the oil discharge section, and the arc section and the oil discharge section form an oil storage chamber 42.

Further, the arc-shaped section is arranged along the circumferential direction of the partition 3.

Further, the oil discharge section is arranged opposite to an oil discharge port of the oil pump.

In another aspect of the present embodiment, there is provided a compressor including the oil pump as described above.

The compressor comprises a crankshaft 5, and the crankshaft 5 is connected with the second rotating member 2 to drive the second rotating member 2 to rotate.

The compressor still includes connecting pipe 6, and bent axle 5 is connected with second rotating member 2 through connecting pipe 6, is provided with the oil extraction passageway in bent axle 5 and the connecting pipe 6, and when the oil pump included oil storage chamber 42, oil storage chamber 42 when including the oil extraction section, the oil extraction passageway communicates with the oil extraction section, has guaranteed that the fluid in the oil extraction section can be smoothly arranged to the compressor in need lubricated position.

Further, the crankshaft 5 is in interference fit with the connecting pipe 6, and the connecting pipe 6 passes through the opening of the cover plate 43 and is fixedly connected with the second rotating member 2 through a D-type key.

Further, the oil pump is disposed on a side of the connecting pipe 6 away from the crankshaft 5.

The compressor still includes the oil bath, and when the oil pump included oil storage chamber 42, oil storage chamber 42 when including oil feed passageway 41, oil feed passageway 41 was linked together with the oil bath, has guaranteed that interior fluid can be inhaled to the oil pump in.

Further, the oil sump is disposed on a side of the oil pump away from the crankshaft 5.

During operation, inhale lubricating oil from the oil bath of scroll compressor through oil feed passageway 41, bent axle 5 is rotatory at this moment and is driven the rotation of second rotating member 2, and second rotating member 2 and first rotating member 1 intermeshing are rotatory, through the drive of first rotating member 1, carry lubricating oil to the oil storage chamber 42 in, continue rotatory down, with lubricating oil pumping to the oil extraction passageway in, under the rotatory centrifugal force effect of bent axle 5, will have the pump to send to each friction pair in for lubrication.

In another aspect of the present embodiment, an air conditioner is provided, which includes the oil pump as described above or includes the compressor as described above.

The oil pump provided by the embodiment of the invention can increase the effective oil pumping volume of the oil pump, can realize the delivery of large oil amount in a short time, reduces the frictional wear among the friction pairs in equipment to be lubricated, enhances the reliability of the equipment to be lubricated, realizes that the oil pumping amount is at least improved by 50 percent under the condition that the oil pumps have the same volume and the crankshafts 5 rotate for the same number of turns, greatly shortens the time that the friction pairs cannot be lubricated in the initial starting stage, can take away more heat generated by friction among the friction pairs, improves the reliability of the whole machine, has self-sealing property, is easy to process, and can reduce the cavitation phenomenon caused by continuous meshing compression on gear teeth. Meanwhile, the oil pump in the embodiment finishes one-time oil pumping only by once meshing of the first rotating piece 1, the change of the flow rate of the fluid is not large, the damage to the gear teeth due to the cavitation action can be reduced, the weight of the whole compressor is reduced, and the oil pump has the characteristics of self-sealing property, easiness in machining and the like.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.

Claims

1. An oil pump, characterized by comprising a first rotary member (1), a second rotary member (2) and a partition member (3);

a containing cavity is arranged in the first rotating part (1), and the second rotating part (2) and the partition part (3) are arranged in the containing cavity;

a protruding part (11) is arranged on the inner wall of the first rotating part (1), one end, far away from the inner wall of the first rotating part (1), of the protruding part (11) is connected with the partition part (3) so as to divide the containing cavity into at least two working chambers, and the working chambers are separated from each other;

the second rotating piece (2) is connected with the first rotating piece (1) so that the second rotating piece (2) drives the first rotating piece (1) to rotate.

2. The oil pump according to claim 1, characterized in that the partition (3) is provided with a first groove in which a portion of the second rotation member (2) is disposed.

3. The oil pump according to claim 1, characterized in that the second rotation member (2) is in sealing contact with the partition (3).

4. The oil pump according to claim 1, characterized in that the side of the second rotation element (2) remote from the partition (3) sealingly interfaces with the first rotation element (1).

5. The oil pump, as set forth in claim 1, characterized in that the partition (3) is crescent-shaped.

6. The oil pump according to claim 1, characterized in that the second rotating member (2) is provided with a second groove (21), and when the protrusion (11) is rotated to the area where the second rotating member (2) is located, the protrusion (11) is inserted into the second groove (21) and is in sealing contact with the groove wall of the second groove (21).

7. The oil pump according to claim 6, characterized in that the second groove (21) has a decreasing cross-section in a direction from the mouth of the second groove (21) to the bottom of the groove of the second groove (21).

8. The oil pump, as set forth in claim 1, characterized in that the projections (11) decrease in cross section in the direction from the inner wall of the first rotating member (1) to the partition (3).

9. The oil pump according to claim 1, characterized in that a first transmission part is arranged on the first rotating member (1), and a second transmission part is arranged on the second rotating member (2), and the first transmission part and the second transmission part are matched with each other, so that the second rotating member (2) drives the first rotating member (1) to rotate;

the length of the protrusion (11) in the direction from the inner wall of the first rotation member (1) to the spacer (3) is L1, the length of the first transmission part in the direction from the inner wall of the first rotation member (1) to the spacer (3) is L2, and L1 is greater than L2.

10. The oil pump, as set forth in claim 1, characterized in that the number of the protrusions (11) is two, the two protrusions (11) being arranged on the same diameter of the first rotary member (1).

11. The oil pump of claim 1, characterized in that, the oil pump still includes casing (4), be provided with the mounting groove in casing (4), first rotating member (1), second rotating member (2) with separate piece (3) and set up in the mounting groove, be provided with oil feed passageway (41) and oil storage chamber (42) on the mounting groove, be in the oil absorption operating mode the operation room with oil feed passageway (41) are linked together, are in the oil extraction operating mode the operation room with oil storage chamber (42) are linked together, fluid in oil storage chamber (42) can discharge outside the oil pump.

12. The oil pump according to claim 11, characterized in that the oil inlet passage (41) and the oil storage chamber (42) are opened on the bottom of the mounting groove.

13. The oil pump of claim 11, wherein the oil reservoir chamber (42) includes an arcuate section and an oil discharge section located at the center of the circle in which the arcuate section is located.

14. A compressor, characterized by comprising an oil pump according to any one of claims 1 to 13.

15. Compressor according to claim 14, characterized in that it comprises a crankshaft (5), said crankshaft (5) being connected to said second rotary member (2) to rotate said second rotary member (2).

16. The compressor according to claim 15, further comprising a connecting pipe (6), wherein the crankshaft (5) is connected to the second rotary member (2) through the connecting pipe (6), and wherein an oil discharge passage is provided in the crankshaft (5) and the connecting pipe (6), and when the oil pump includes an oil storage chamber (42), the oil storage chamber (42) includes an oil discharge section, the oil discharge passage communicates with the oil discharge section.

17. The compressor of claim 15, further comprising an oil sump, wherein when the oil pump includes an oil storage chamber (42), the oil storage chamber (42) includes an oil inlet passage (41), the oil inlet passage (41) is in communication with the oil sump.

18. An air conditioner characterised by comprising an oil pump as claimed in any one of claims 1 to 13 or comprising a compressor as claimed in any one of claims 14 to 17.