CN118881560B - Pump Assemblies and Compressors - Google Patents
Pump Assemblies and Compressors Download PDFInfo
- Publication number
- CN118881560B CN118881560B CN202411384766.4A CN202411384766A CN118881560B CN 118881560 B CN118881560 B CN 118881560B CN 202411384766 A CN202411384766 A CN 202411384766A CN 118881560 B CN118881560 B CN 118881560B
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- China
- Prior art keywords
- channel
- crankshaft
- pump body
- body assembly
- upper bracket
- Prior art date
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Links
- 230000000712 assembly Effects 0.000 title 1
- 238000000429 assembly Methods 0.000 title 1
- 239000003921 oil Substances 0.000 claims abstract description 75
- 239000010687 lubricating oil Substances 0.000 claims abstract description 58
- 239000003507 refrigerant Substances 0.000 claims abstract description 39
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 230000006835 compression Effects 0.000 claims description 14
- 238000007906 compression Methods 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 4
- 238000005461 lubrication Methods 0.000 description 10
- 239000000203 mixture Substances 0.000 description 7
- 238000004378 air conditioning Methods 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000009966 trimming Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/023—Lubricant distribution through a hollow driving shaft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/026—Lubricant separation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/028—Means for improving or restricting lubricant flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/60—Shafts
- F04C2240/603—Shafts with internal channels for fluid distribution, e.g. hollow shaft
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention provides a pump body assembly and a compressor, wherein the pump body assembly comprises a balance weight, a crankshaft and an oil return pipe, the balance weight is provided with a first channel, an inlet of the first channel is formed in the peripheral side face of the balance weight, the balance weight is sleeved on the outer side of the crankshaft, the crankshaft is in driving connection with the balance weight, the crankshaft is provided with a second channel, the first channel is communicated with the second channel, the oil return pipe is communicated with the second channel, and lubricating oil separated from refrigerant air flow flows to the second channel through the first channel and flows into the oil return pipe from the second channel. The invention solves the problem of overhigh oil discharge rate of the exhaust of the compressor in the prior art.
Description
Technical Field
The invention relates to the field of compressors, in particular to a pump body assembly and a compressor.
Background
When the high-pressure cavity scroll compressor operates, the refrigerant with low temperature and low pressure is compressed into the gaseous refrigerant with high temperature and high pressure, and lubricating oil is mixed in the gaseous refrigerant with high temperature and high pressure. When the refrigerant flows through the main balance weight, the balance weight rotates to disturb the refrigerant flow so as to separate lubricating oil from the refrigerant. Lubricating oil separated and polymerized from the refrigerant airflow is accumulated at the main balance block, the lubricating oil cannot be timely discharged and taken away again by the refrigerant airflow, the lubricating oil is discharged into the air conditioning system along with the refrigerant airflow, and when the content of the lubricating oil in the gaseous refrigerant is too high, the heat transfer of the air conditioning system is affected, so that the energy consumption of the air conditioner is reduced.
Disclosure of Invention
The invention mainly aims to provide a pump body assembly and a compressor, which are used for solving the problem of high oil discharge rate of exhaust gas of the compressor in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided a pump body assembly including a balance weight having a first passage, an inlet of the first passage being opened on a circumferential side surface of the balance weight, a balance weight sleeved on an outer side of the crankshaft, the crankshaft being in driving connection with the balance weight, the crankshaft having a second passage, the first passage being in communication with the second passage, and an oil return pipe in communication with the second passage, lubricating oil separated from a refrigerant flow flowing to the second passage through the first passage and flowing into the oil return pipe from the second passage.
Further, the first channel extends along the circumferential direction of the balance weight, and/or the cross section of the first channel gradually decreases along the extending direction of the first channel.
Further, the balance weight is provided with a windward side, the first channel is provided with a first inlet end and a first outlet end, the first inlet end is positioned at the windward side, and the first outlet end is communicated with the second channel.
Further, the balance weight is provided with a through hole for avoiding the crankshaft, and the first outlet end is communicated to the surface of the through hole.
Further, the second passage has a second inlet end and a second outlet end, both of which are located on the circumferential side of the crankshaft, and/or the second inlet end and the second outlet end are provided at intervals in the axial direction of the crankshaft.
Further, the peripheral side of the crankshaft has a groove, the second passage has a second inlet end and a second outlet end, the second inlet end communicates with the first passage, and the second outlet end communicates to the inside of the groove.
Further, the groove extends in an axial direction of the crankshaft, and the second inlet end is located outside the groove.
Further, the pump body assembly further includes a compression portion, the crankshaft is drivingly connected to the compression portion, and the second inlet end is disposed away from the compression portion relative to the second outlet end.
Further, the pump body assembly further comprises an upper bracket bearing, the upper bracket bearing is sleeved outside the crankshaft, the groove is located in the area covered by the upper bracket bearing, and lubricating oil in the groove can flow to the upper bracket bearing.
The pump body assembly further comprises an upper bracket bearing and an upper bracket, wherein the upper bracket bearing is sleeved on the outer side of the crankshaft, the upper bracket is sleeved on the outer side of the upper bracket bearing, the upper bracket is provided with an oil return cavity communicated with the upper bracket bearing and the oil return pipe, and the second channel is communicated with the oil return pipe through the upper bracket bearing and the oil return cavity.
Further, an oil return chamber is formed between the upper bracket and the crankshaft.
According to another aspect of the present invention, there is provided a compressor comprising the pump body assembly described above.
Further, the compressor still includes the casing, and pump body assembly's balancing piece, pump body assembly's bent axle, pump body assembly's upper bracket bearing, pump body assembly's upper bracket all set up in the inside of casing, and the upper bracket is connected with the casing, and the bottom of casing has the oil bath, and pump body assembly's the end intercommunication oil bath of returning oil pipe.
By adopting the technical scheme, the oil return pipe is arranged in the first channel, the second channel and the oil return pipe, and a return channel is provided for lubricating oil separated from the refrigerant air flow, so that the lubricating oil can be timely discharged from the balance weight, the balance weight is prevented from continuously rotating to take away the separated lubricating oil again and mix the lubricating oil into the refrigerant air flow, specifically, the balance weight rotates to separate the lubricating oil in the refrigerant air flow and gather the lubricating oil near the balance weight, the lubricating oil passes through the first channel and flows into the oil return pipe through the second channel, so that the timely return of the lubricating oil is realized, the discharge of the lubricating oil along with the refrigerant air flow is avoided, the oil-gas separation capacity of the compressor is improved, the lubricating oil content in the discharged refrigerant air flow is reduced, and the oil discharge rate of the exhaust of the compressor is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
Fig. 1 shows a schematic structural view of a compressor according to an embodiment of the present invention;
FIG. 2 shows a schematic structural diagram of a counterweight;
FIG. 3 shows a schematic structural view of a crankshaft;
fig. 4 shows a schematic structural view of the pump body assembly except for the compression portion.
Wherein the above figures include the following reference numerals:
10. the balance weight, 11, the first channel, 111, the first inlet end, 112, the first outlet end, 12, the windward side, 13, the through hole, 20, the crankshaft, 21, the second channel, 211, the second inlet end, 212, the second outlet end, 22, the groove, 30, the oil return pipe, 40, the compression part, 50, the upper bracket bearing, 60, the upper bracket, 61, the oil return chamber, 70, the shell, 71 and the oil sump.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise indicated.
In the present invention, unless otherwise indicated, the use of orientation terms such as "upper, lower, top, bottom" are generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, vertical or gravitational direction, and likewise, for ease of understanding and description, "inner, outer" refer to inner, outer relative to the profile of the component itself, but such orientation terms are not intended to limit the invention.
The invention provides a pump body assembly and a compressor, and aims to solve the problem that the exhaust oil discharge rate of the compressor in the prior art is too high.
As shown in fig. 1 to 4, a pump body assembly includes a balance weight 10, a crankshaft 20, and an oil return pipe 30, the balance weight 10 having a first passage 11, an inlet of the first passage 11 being opened on a circumferential side surface of the balance weight 10, the balance weight 10 being fitted on an outer side of the crankshaft 20, the crankshaft 20 being drivingly connected to the balance weight 10, the crankshaft 20 having a second passage 21, the first passage 11 and the second passage 21 being in communication, the oil return pipe 30 being in communication with the second passage 21, lubricating oil separated from a refrigerant flow flowing through the first passage 11 to the second passage 21 and flowing from the second passage 21 into the oil return pipe 30.
According to the embodiment, the first channel 11, the second channel 21 and the oil return pipe 30 are arranged, so that a backflow channel is provided for lubricating oil separated from refrigerant air flow, the lubricating oil can be timely discharged from the balance weight 10, the balance weight 10 is prevented from continuously rotating to take away the separated lubricating oil again and mix the lubricating oil into the refrigerant air flow, specifically, the balance weight 10 rotates to separate the lubricating oil in the refrigerant air flow and gather the lubricating oil near the balance weight 10, the lubricating oil passes through the first channel 11 and flows into the oil return pipe 30 through the second channel 21, timely backflow of the lubricating oil is realized, the lubricating oil is prevented from being discharged along with the refrigerant air flow, the oil-gas separation capacity of the compressor is improved, the lubricating oil content in the discharged refrigerant air flow is reduced, and the oil discharge rate of the compressor exhaust is reduced.
As shown in fig. 2, in the present embodiment, the first passage 11 extends in the circumferential direction of the weight 10, and/or the first passage 11 gradually decreases in cross section in the extending direction of the first passage 11. Specifically, the balance weight 10 of the present embodiment is an irregular annular structure with an outer peripheral surface, the first channel 11 extends from the outer peripheral surface of the balance weight 10 to the center of the balance weight 10 in an arc shape, and the opening of the inlet of the first channel 11 is the largest, and the first channel 11 is designed to gradually decrease from the inlet to the outlet, so as to generate a sufficient pressure difference to bring the lubricant into the second channel 21 by the refrigerant air flow.
As shown in fig. 2, in the present embodiment, the weight 10 has a windward side 12, the first passage 11 has a first inlet end 111 and a first outlet end 112, the first inlet end 111 is located at the windward side 12, and the first outlet end 112 communicates with the second passage 21, so that the lubricating oil accumulated at the weight 10 is discharged to the first passage 11 and into the second passage 21. Specifically, the outer peripheral surface of the balance weight 10 is formed by splicing two semi-cylindrical surfaces with different diameters, two spliced positions of the two semi-cylindrical surfaces form two planes, along with rotation of the balance weight 10, the two spliced positions form a windward surface 12 and a leeward surface respectively, the balance weight 10 extrudes the refrigerant airflow at the windward surface 12 at a high speed to form a high-pressure area and gathers a large amount of lubricating oil separated from the refrigerant airflow, and the first inlet end 111 is arranged at the windward surface 12, so that on one hand, the high pressure at the windward surface 12 enables the lubricating oil at the position to flow into the first channel 11 from the first inlet end 111 and flow into the first outlet end 112, and then flows into the second channel 21, so that the lubricating oil at the windward surface 12 is discharged in time, and on the other hand, the pressure at the windward surface 12 of the balance weight 10 is reduced, and turbulence loss of the balance weight 10 is reduced.
In the present embodiment, the weight 10 has the through hole 13 for avoiding the crankshaft 20, and the first outlet end 112 communicates to the surface of the through hole 13 so as to communicate with the second passage 21 of the crankshaft 20. Specifically, the center of the balance weight 10 is provided with a through hole 13, and the crankshaft 20 is inserted through the through hole 13 inside the balance weight 10, so that the side wall of the through hole 13 is in contact with the outer peripheral surface of the crankshaft 20, so that the first outlet end 112 can be in contact with the outer peripheral surface of the crankshaft 20, thereby communicating the first passage 11 and the second passage 21.
As shown in fig. 3, in the present embodiment, the second passage 21 has a second inlet end 211 and a second outlet end 212, both of which are located on the circumferential side of the crankshaft 20, and/or the second inlet end 211 and the second outlet end 212 are spaced apart in the axial direction of the crankshaft 20 so that the lubrication oil changes its axial position by flowing in the second passage 21, thereby causing the lubrication oil to flow out from the axial position on the crankshaft 20 where the weight 10 is located, avoiding being discharged in the flow of the refrigerant. The crankshaft 20 of the present embodiment is in a long cylindrical shape, the main body portion of the second channel 21 extends along the length direction of the crankshaft 20, and both ends of the main body portion are bent toward the outer peripheral surface of the crankshaft 20 to form a second inlet end 211 and a second outlet end 212 which are axially spaced apart, so that the lubricating oil in the second channel 21 can change its axial position along the second channel 21 so as to be away from the balance weight 10.
As shown in fig. 3, in the present embodiment, the circumferential side of the crankshaft 20 has a groove 22, the groove 22 extends in the axial direction of the crankshaft 20 and is the length direction thereof, the width of the groove 22 covers the size of the second outlet end 212, but does not cover the entire circumferential side of the crankshaft 20, the second inlet end 211 communicates with the first passage 11, and the second outlet end 212 communicates to the inside of the groove 22, so that lubricating oil flows from the first passage 11 to the second inlet end 211 and flows to the second outlet end 212, and can enter the groove 22 when flowing out from the second outlet end 212.
In the present embodiment, the second inlet end 211 is located outside the groove 22, so that the second inlet end 211 and the second outlet end 212 are isolated from each other and are not communicated with each other, thereby avoiding affecting the discharge of the lubricating oil. Specifically, the crankshaft 20 of the present embodiment is vertically disposed, and the joint of the weight 10 and the crankshaft 20 is located below the recess 22, so that the second inlet end 211 is located vertically below the second outlet end 212. The joint of the balance weight 10 and the crankshaft 20 of the present embodiment is also provided with the concave portion, which is equivalent to the protrusion between the second inlet end 211 and the second outlet end 212, so that when the lubricating oil flows into the second inlet end 211 from the first outlet end 112, the lubricating oil does not flow upward to the second outlet end 212 along the axial direction of the balance weight 10 and the crankshaft 20 to cause pressure loss, but flows out from the first outlet end 112 into the second passage 21, and flows out from the second outlet end 212 into the groove 22 of the crankshaft 20.
In this embodiment, the pump body assembly further includes a compression portion 40, the crankshaft 20 is drivingly connected to the compression portion 40, and the second inlet end 211 is disposed away from the compression portion 40 relative to the second outlet end 212, such that lubrication oil can flow to the upper end of the compressor with flow in the second passage 21. Specifically, the compression part 40 includes a fixed scroll and a movable scroll of the compressor, the compression part 40 is disposed at an upper end of the compressor, and the second outlet end 212 is closer to the compression part 40, thereby guiding the lubricant to the upper end of the compressor so as to guide the lubricant to a proper chamber for backflow.
As shown in fig. 4, in this embodiment, the pump body assembly further includes an upper bracket bearing 50, the upper bracket bearing 50 is sleeved on the outer side of the crankshaft 20, the groove 22 is located in an area covered by the upper bracket bearing 50, and lubricating oil in the groove 22 can flow to the upper bracket bearing 50, so that the channel lubricates the effect of the upper bracket bearing 50, thereby avoiding oil shortage and abrasion of the upper bracket bearing 50, and prolonging the service life thereof. Specifically, the length of the upper bracket bearing 50 is greater than the length of the recess 22, and the recess 22 is located inside the mating section of the upper bracket bearing 50 and the crankshaft 20, such that a small chamber extending axially along the crankshaft 20 is formed at the recess 22. The oil-gas mixture entering the groove 22 passes through the fit gap between the upper bracket bearing 50 and the crankshaft 20, and the oil-gas is separated to some extent due to the different densities under the high-speed rotation of the crankshaft 20, and part of the lubricating oil adheres to the upper bracket bearing 50 or the surface of the crankshaft 20, thereby improving the lubrication of the upper bracket bearing 50.
In this embodiment, the pump body assembly further includes an upper bracket 60, the upper bracket 60 is sleeved on the outer side of the upper bracket bearing 50, the upper bracket 60 has an oil return chamber 61 communicating with both the upper bracket bearing 50 and the oil return pipe 30, and the second channel 21 communicates with the oil return pipe 30 through the upper bracket bearing 50 and the oil return chamber 61, so that the lubricating oil flows into the oil return chamber 61 after flowing out from the second channel 21, and finally flows out from the oil return pipe 30. Specifically, the upper bracket 60 is a stationary member, and one end of the upper bracket 60, which is far away from the upper bracket bearing 50, that is, the upper end of the upper bracket 60 in this embodiment has a stationary oil return chamber 61, and a part of the oil-gas mixture flows into the groove 22 of the crankshaft 20, then enters the oil return chamber 61 through the original trimming of the crankshaft 20, and finally flows out through the oil return pipe 30, so that the lubricating oil is discharged out of the compressor along with the refrigerant flow through the exhaust port, and the exhaust oil discharge rate of the compressor is reduced.
In the present embodiment, the oil return chamber 61 is formed between the upper bracket 60 and the crankshaft 20. The lower end of the upper bracket 60 of the present embodiment is connected with the crankshaft 20 through the lower bracket bearing, a circular chamber is provided at the center of the upper end of the upper bracket 60, the crankshaft 20 passes through the center of the chamber, so that a large gap is provided between the upper bracket 60 and the crankshaft 20, and an oil return chamber 61 is formed, so that lubricating oil is accumulated in the oil return chamber 61 and flows out of the oil return pipe 30.
The embodiment also provides a compressor, which comprises the pump body assembly. In this embodiment, the first channel 11 communicating the windward side 12 of the balance weight 10 and the inner peripheral side of the balance weight 10 is formed inside the balance weight 10, and cooperates with the second channel 21 in the crankshaft 20 to guide the lubricating oil accumulated at the windward side 12 of the balance weight 10 to the upper bracket bearing 50, and then enters the oil return chamber 61 of the upper bracket 60 through the cooperation gap between the upper bracket bearing 50 and the crankshaft 20 and the lubrication trimming of the upper bracket bearing 50, and finally is discharged through the oil return pipe 30. The lubricating oil is prevented from being taken away again by the refrigerant air flow because the lubricating oil cannot be timely discharged, the lubrication of the upper bracket bearing 50 can be enhanced, and meanwhile, the pressure of a high-pressure area at the windward side 12 of the balance weight 10 can be reduced so as to reduce the extra power consumption of the turbulence of the balance weight 10.
In this embodiment, the compressor further includes a housing 70, the balance weight 10 of the pump body assembly, the crankshaft 20 of the pump body assembly, the upper bracket bearing 50 of the pump body assembly, and the upper bracket 60 of the pump body assembly are all disposed inside the housing 70, and the upper bracket 60 is connected with the housing 70 by spot welding, an oil pool 71 is disposed at the bottom of the housing 70, and the tail end of the oil return pipe 30 of the pump body assembly is communicated with the oil pool 71, so that lubricating oil flows back into the oil pool 71 through the oil return pipe 30, recycling is achieved, and energy consumption of refrigeration settings such as air conditioning is reduced.
The compressor of this embodiment further includes structures such as a motor, a lower bracket, a lower support ring, a cross slip ring, etc., the stator of the motor is fixed on the housing 70 through a heat jacket, the phase angles of the movable scroll and the fixed scroll differ by 180 degrees and are oppositely installed on the upper bracket 60, the movable scroll moves under the driving of the crankshaft 20 and is meshed with the fixed scroll to form a series of crescent closed cavities which are isolated from each other and have continuously variable volumes, and the fixed scroll is fixed on the upper bracket 60 through screw fasteners. The lower bracket is fixed to the lower support ring by screws, and the lower support ring is fixed to the housing 70 by spot welding. When the compressor is running, the motor drives the crankshaft 20 to rotate, and the crank of the crankshaft 20 drives the movable vortex disk to move, so that the movable vortex disk moves in a translational motion around the center of the crankshaft 20 with a fixed radius under the rotation prevention limit of the cross slip ring. The refrigerant entering from the air suction pipe is sucked into a crescent air suction cavity formed by the movable vortex disk and the fixed vortex disk, is discharged from an air outlet of the fixed vortex disk after being compressed, enters into a containing cavity between the upper cover and the fixed vortex disk, enters into an upper cavity area of a compressor between the upper bracket 60 and the motor through an air discharge groove of the fixed vortex disk and the upper bracket 60, and enters into a lower cavity of the compressor at the lower end of the motor through a flow passage groove between the motor and the shell 70, and finally, the high-pressure air discharge refrigerant is discharged through an air discharge pipe.
The principle of the lubricating oil separation in this embodiment is that when the crankshaft 20 drives the balance weight 10 to rotate at a high speed, the refrigerant airflow is disturbed strongly, and the semi-annular structure of the balance weight 10 generates a windward side 12. The windward side 12 compresses the refrigerant flow at a high speed such that a front region of the windward side 12 forms a high pressure region. Where a large amount of lubrication oil accumulates, which would be forced out of the compressor by the flow of refrigerant if a path were lacking to direct the lubrication oil to the lower chamber of the compressor. In this embodiment, the first channel 11 and the second channel 21 are formed inside the balance weight 10 and the crankshaft 20, and a groove 22 is formed on the surface of the matching section of the crankshaft 20 and the upper bracket bearing 50. The pressure difference is used to guide the lubrication oil accumulated at the windward side 12 of the counterweight 10 to the groove 22. The lubricating oil can be prevented from being taken away by the refrigerant air flow again to be discharged out of the compressor, and the additional turbulence loss of the balance weight 10 can be reduced. The oil-gas mixture entering the groove 22 is separated to some extent due to the different densities by the clearance between the upper bracket bearing 50 and the crankshaft 20 under the high-speed rotation of the crankshaft 20, and part of the lubricating oil adheres to the bearing or the surface of the crankshaft 20, thereby improving the lubrication of the upper bracket bearing 50. The rest of the oil-gas mixture enters the oil return cavity 61 of the upper bracket 60 through the original trimming edge of the section of the crankshaft 20 and finally enters the oil pool 71 at the bottom of the shell 70 through the oil return pipe 30, so that the high-pressure refrigerant air flow rich in lubricating oil is guided to the lower cavity of the compressor, the air flow is prevented from moving in the upper cavity of the compressor and is discharged out of the compressor through the exhaust port, and the exhaust oil discharge rate of the compressor and the turbulent flow loss of the balance weight 10 are reduced.
It should be noted that, in the above embodiments, a plurality refers to at least two.
From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:
1. The problem of the compressor in the prior art that the exhaust oil discharge rate is too high is solved;
2. By arranging the first channel, the second channel and the oil return pipe, a return channel is provided for lubricating oil separated from the refrigerant air flow, so that the lubricating oil can be timely discharged from the balance weight, and the condition that the balance weight continuously rotates to take away the separated lubricating oil again and mix the lubricating oil into the refrigerant air flow is avoided;
3. the pressure intensity at the windward side of the balance weight is reduced, so that the turbulence loss of the balance weight is reduced.
It will be apparent that the embodiments described above are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. A pump body assembly, comprising:
The balance weight (10), the balance weight (10) is provided with a first channel (11), an inlet of the first channel (11) is formed in the circumferential side surface of the balance weight (10), and the first channel (11) extends along the circumferential direction of the balance weight (10);
The crankshaft (20), the balance weight (10) is sleeved on the outer side of the crankshaft (20), the crankshaft (20) is in driving connection with the balance weight (10), the crankshaft (20) is provided with a second channel (21), and the first channel (11) is communicated with the second channel (21);
-an oil return pipe (30), said oil return pipe (30) being in communication with said second channel (21), lubricating oil separated from the refrigerant gas flow flowing via said first channel (11) to said second channel (21) and from said second channel (21) into said oil return pipe (30).
2. The pump body assembly of claim 1, wherein,
The cross section of the first channel (11) gradually decreases along the extension direction of the first channel (11).
3. Pump body assembly according to claim 1, wherein the counterweight (10) has a windward side (12), the first channel (11) having a first inlet end (111) and a first outlet end (112), the first inlet end (111) being located at the windward side (12), the first outlet end (112) being in communication with the second channel (21).
4. A pump body assembly according to claim 3, wherein the counterweight (10) has a through hole (13) for receiving the crankshaft (20), the first outlet end (112) being connected to a surface of the through hole (13).
5. The pump body assembly of claim 1, wherein,
The second passage (21) has a second inlet end (211) and a second outlet end (212), the second inlet end (211) and the second outlet end (212) being located on the circumferential side of the crankshaft (20), and/or
The second inlet end (211) and the second outlet end (212) are arranged at intervals in the axial direction of the crankshaft (20).
6. Pump body assembly according to claim 1, characterized in that the crankshaft (20) has a groove (22) on its peripheral side, the second channel (21) having a second inlet end (211) and a second outlet end (212), the second inlet end (211) being in communication with the first channel (11), the second outlet end (212) being in communication with the interior of the groove (22).
7. Pump body assembly according to claim 6, further comprising an upper support bearing (50), the upper support bearing (50) being arranged around the crankshaft (20), the recess (22) being located in the area covered by the upper support bearing (50), the lubricating oil in the recess (22) being able to flow towards the upper support bearing (50).
8. Pump body assembly according to claim 6, characterized in that the groove (22) extends in the axial direction of the crankshaft (20) and the second inlet end (211) is located outside the groove (22).
9. Pump body assembly according to claim 8, further comprising a compression section (40), the crankshaft (20) being in driving connection with the compression section (40), and the second inlet end (211) being arranged distant from the compression section (40) with respect to the second outlet end (212).
10. The pump body assembly of any one of claims 1 to 9, further comprising:
An upper bracket bearing (50), wherein the upper bracket bearing (50) is sleeved on the outer side of the crankshaft (20);
The upper bracket (60), upper bracket (60) cover is established the outside of upper bracket bearing (50), upper bracket (60) have with upper bracket bearing (50) with return oil pipe (30) all communicate return oil cavity (61), second passageway (21) pass through upper bracket bearing (50) return oil cavity (61) with return oil pipe (30) intercommunication.
11. Pump body assembly according to claim 10, characterized in that the oil return chamber (61) is formed between the upper bracket (60) and the crankshaft (20).
12. A compressor comprising a pump body assembly according to any one of claims 1 to 11.
13. The compressor according to claim 12, characterized in that the compressor further comprises:
the oil return device comprises a shell (70), a balancing block (10) of the pump body assembly, a crankshaft (20) of the pump body assembly, an upper bracket bearing (50) of the pump body assembly and an upper bracket (60) of the pump body assembly are arranged inside the shell (70), the upper bracket (60) is connected with the shell (70), an oil pool (71) is arranged at the bottom of the shell (70), and the tail end of an oil return pipe (30) of the pump body assembly is communicated with the oil pool (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411384766.4A CN118881560B (en) | 2024-09-30 | 2024-09-30 | Pump Assemblies and Compressors |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411384766.4A CN118881560B (en) | 2024-09-30 | 2024-09-30 | Pump Assemblies and Compressors |
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| CN118881560A CN118881560A (en) | 2024-11-01 |
| CN118881560B true CN118881560B (en) | 2024-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113494450A (en) * | 2020-04-07 | 2021-10-12 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor having a plurality of scroll members |
| CN114439747A (en) * | 2021-12-24 | 2022-05-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Scroll compressor shafting lubricating structure, scroll compressor and air conditioner |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162454B (en) * | 2011-04-19 | 2013-04-10 | 松下·万宝(广州)压缩机有限公司 | Oil-gas separated-type balancing block |
| JP6131769B2 (en) * | 2013-08-20 | 2017-05-24 | ダイキン工業株式会社 | Rotary compressor |
| CN214698344U (en) * | 2021-04-28 | 2021-11-12 | 广东美的环境科技有限公司 | Scroll compressors and air conditioners |
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2024
- 2024-09-30 CN CN202411384766.4A patent/CN118881560B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113494450A (en) * | 2020-04-07 | 2021-10-12 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor having a plurality of scroll members |
| CN114439747A (en) * | 2021-12-24 | 2022-05-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Scroll compressor shafting lubricating structure, scroll compressor and air conditioner |
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