CN107859626A - A kind of high efficient oil separation screw compressor and its oil separating method - Google Patents
A kind of high efficient oil separation screw compressor and its oil separating method Download PDFInfo
- Publication number
- CN107859626A CN107859626A CN201711441337.6A CN201711441337A CN107859626A CN 107859626 A CN107859626 A CN 107859626A CN 201711441337 A CN201711441337 A CN 201711441337A CN 107859626 A CN107859626 A CN 107859626A
- Authority
- CN
- China
- Prior art keywords
- motor
- balance weight
- oil
- protecting cover
- space
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- 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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with or adaptation to specific driving engines or motors
-
- 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
- F04C29/04—Heating; Cooling; Heat insulation
- F04C29/045—Heating; Cooling; Heat insulation of the electric motor in hermetic pumps
-
- 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
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
Abstract
The invention belongs to technical field of refrigeration compressors, specifically a kind of high efficient oil separation screw compressor and its oil separating method.Through housing, motor protecting cover, deeply motor upper space is separated into balance weight place space and motor protecting cover exterior space by space where upper balance weight, motor protecting cover for compressor exhaust pipe one end of the present invention.Motor passes through bent axle drive orbiter progress translation during compressor energization operating; low-temp low-pressure refrigerant enters through air intake duct; after orbiter compresses, become the air-fuel mixture state gas of HTHP, and discharge by the exhaust outlet of determine vortex disk; on the outside of the stator for flowing through the exterior space formed between motor protecting cover and housing, motor; the oil sump of compression motor spindle, then the gap by stator and rotor are reached, is flowed up; by upper balance weight, finally discharged through blast pipe.The present invention not only makes motor cooling more abundant, while power oil method is it is also ensured that more lubricating oil have been stayed in inside compressor.
Description
Technical field
The invention belongs to technical field of refrigeration compressors, specifically a kind of high efficient oil separation screw compressor and its oil separation
Method.
Background technology
Oil recycle ratio (OCR) is one of important performance indexes of air conditioner refrigerating compressor.This parameter, which directly influences, is
The efficiency of system.For screw compressor, substantial amounts of oil enters discharge chambe, then participates in refrigerant circulation, system can be caused to exchange heat
Efficiency reduces, and influences efficiency.Meanwhile oil reserve inside limited compressor, because a large amount of lubricating oil enter system, it can also bring pressure
The lubricating reliability risk of contracting machine.Therefore, separate and keep more lubricating oil to stay from gas lubricating oil within the compressor
It is very important inside compressor.
At present, in high side compressors design, oil separation is by using an independence or joint metal plate, makes oil gas
Vector change occurs for fluid-mixing speed to realize.Such as accompanying drawing 1.Compressor design in Fig. 1 a is from crankcase 28 to motor
The upper end of stator 23 adds a lid 54, and by screw 60, is fixed on crankcase 28.Lid 54 is space where balance weight B
It is divided into two parts with the place space of delivery pipe 62, the oil that lid 54 can avoid flowing out from bearing 30 is directly by the row of blast pipe 50
Go out into system.Similar thinking is used in Fig. 1 b, in difference is lid 54 being also covered in the upper end spiral of stator 23.
But these compressors all limit gas and flowed between rotor, are unfavorable for the sufficiently cool of motor.
The content of the invention
To overcome drawbacks described above, the invention provides a kind of high efficient oil to separate screw compressor, not only can be to compressor
Motor carry out sufficiently cool, while ensure that more lubricating oil have been stayed in inside compressor.
For achieving the above object, the present invention uses following technical scheme：
A kind of high efficient oil separates screw compressor, including housing, bent axle, upper spider, lower bearing bracket, motor, determines with exhaust outlet
Scroll plate, orbiter, air intake duct, oil sump, motor include stator and rotor, it is characterised in that the compressor also includes row
Tracheae, upper balance weight, motor protecting cover, space where motor upper space is separated into balance weight by motor protecting cover and motor are protected
Shield exterior space, described blast pipe one end is through housing, motor protecting cover and deeply goes up balance weight place space.
Further, space where upper balance weight is the space that upper spider, motor and motor protecting cover are formed.
Further, the space that motor protecting cover exterior space is formed between motor protecting cover and housing.
Further, the upper balance weight is having radial direction straight flute or the spiral grooves of direction of rotation towards motor side.
Further, the upper balance weight has radially or the raised blade in direction of rotation towards motor side.
The oil separating method of above-mentioned high efficient oil separation screw compressor, motor is driven by bent axle when compressor energization operates
Orbiter carries out translation, and low-temp low-pressure refrigerant enters through air intake duct, after orbiter compresses, becomes the oil gas of HTHP
Mixed state gas, and being discharged by the exhaust outlet of determine vortex disk, flow through formed between motor protecting cover and housing exterior space,
On the outside of the stator of motor, the oil sump of compression motor spindle is reached, so as to be successively performed the cooling to motor outside, oil sump, then is passed through
Determine the gap of word and rotor, flow up, by upper balance weight, finally discharged through blast pipe, into system.
When further, by upper balance weight, upper balance weight rotates under the drive of bent axle, and the oil gas for flowing through balance weight mixes
Close state gas and produce strong centrifugal force, gas-liquid separation, liquid flows into oil sump along motor protecting cover, and gas then continues up from exhaust
Pipe is discharged in system.
A kind of high efficient oil separates screw compressor, including housing, bent axle, upper spider, lower bearing bracket, motor, with exhaust outlet
Determine vortex disk, orbiter, air intake duct, oil sump, blast pipe 8, upper balance weight, the upper balance weight carries groove or projection.
Further, the upper balance weight is having radial direction straight flute or the spiral grooves of direction of rotation towards motor side.
Further, the upper balance weight has radially or the raised blade in direction of rotation towards motor side.
Compared with prior art, beneficial effects of the present invention are：The present invention allows gas by turning by controlling gas circulation
Gap between son and stator, when fluid mixed gas passes through balance weight, the balance weight of rotation will change mixed gas at a high speed
Flow direction, and using the groove structure for being arranged on blade on balance weight lower surface or similar blade, centrifuging oil gas
The lower separation of power effect is more abundant.The present invention not only makes motor cooling more abundant, while power oil method is it is also ensured that more
More lubricating oil have been stayed in inside compressor.The present invention improves the oil-dividing efficiency inside compressor, makes oil recycle ratio (OCR) more
Low, system energy efficiency is higher, and compressor is more reliable, and compressor arrangement is simple, easily realizes.
Brief description of the drawings
The existing compressor arrangement schematic diagrames of Fig. 1；
Fig. 2 compressor arrangement schematic diagrames of the present invention；
In figure, 1. housings, 2. upper spiders, 3. determine vortex disks, 4. orbiters, 5. lower bearing brackets, balance weight on 6., 7. electricity
Machine, 8. blast pipes, 9. air intake ducts, 12. exhaust outlets, 13. oil sumps, 23. motor protecting covers, 71. bent axles, 72. stators,
73. rotor
The structural representation of Fig. 3 compressors balance weights of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention will be further described.
A kind of high efficient oil separates screw compressor, including housing 1, bent axle 71, upper spider 2, lower bearing bracket 5, motor 7, carries
Determine vortex disk 3, orbiter 4, air intake duct 9, the oil sump 13 of exhaust outlet 12, motor 7 include stator 72 and rotor 73, and bent axle 71 is solid
It is scheduled on upper spider 2 and lower bearing bracket 5, determine vortex disk 3 is bolted on upper spider, and orbiter 4 is enclosed on bent axle 71
End, for oil sump 13 positioned at compression motor spindle, the compressor also includes blast pipe 8, upper balance weight 6, motor protecting cover 23, and motor is protected
Space and motor protecting cover exterior space, the one end of blast pipe 8 pass through where motor upper space is separated into balance weight by shield 23
Space where housing 1, motor protecting cover 23 deeply go up balance weight, space where upper balance weight is upper spider 2, motor 7 and motor
The space that protective cover 23 is formed.The space that motor protecting cover exterior space is formed between motor protecting cover 23 and housing 1, this is empty
Between for high pressure-temperature air-fuel mixture state gas flow through passage.The exterior space that is formed between motor protecting cover 23 and housing 1 with
Space where upper balance weight is not communicated with.Upper balance weight is having radial direction straight flute or the spiral goove of direction of rotation towards motor side
Groove；Upper balance weight towards motor side can also have projection, radially or direction of rotation blade.
It is using the efficient oil separating method of above-mentioned compressor：During compressor energization operating, motor is driven dynamic by bent axle
Scroll plate carries out translation, and low-temp low-pressure refrigerant enters through air intake duct, and after orbiter compresses, the oil gas for becoming HTHP mixes
Close state gas, and discharged by the exhaust outlet of determine vortex disk, flow through the exterior space that is formed between motor protecting cover and housing and
On the outside of the stator of motor, the oil sump of compression motor spindle is reached, so as to be successively performed the cooling to motor outside, oil sump, then is passed through
The gap of stator and rotor, is flowed up, and by upper balance weight, is finally discharged through blast pipe 8, into system.Upper balance weight exists
There is radial direction straight flute towards motor side（Fig. 3 b）Or the spiral grooves of direction of rotation（Fig. 3 c）.During by upper balance weight,
Upper balance weight is usually that " Z " font or " L " shape, upper balance weight rotate under the drive of bent axle, forms the same covering of umbrella, resistance
Oil removal gas mixed state gas flows, and generates strong centrifugal force and promote gas-liquid separation, so as to avoid the oil gas of HTHP from mixing
Compound enters system directly through blast pipe, but under the effect of high speed centrifugation power, oil is separated out from gas mixture, and makes
The bottom that compressor oil sump is flow back into along motor protecting cover, and gas continue it is up, so as to by blast pipe be discharged to system
In.
Upper balance weight can select a kind of structure in following 4 kinds to use：（1）Upper balance weight 6 is having footpath towards motor side
To straight flute；（2）Upper balance weight 6 is in the spiral grooves for having direction of rotation towards motor side；（3）Upper balance weight 6 is towards electricity
The raised blade in machine side You Yanjing directions；（4）Upper balance weight 6 is oriented raised along direction of rotation towards motor side
Blade.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art in the technical scope of present disclosure, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all cover within the scope of the present invention.
Claims (10)
1. a kind of high efficient oil separates screw compressor, including housing（1）, bent axle（71）, upper spider（2）, lower bearing bracket（5）, motor
（7）, with exhaust outlet（12）Determine vortex disk（3）, orbiter（4）, air intake duct（9）, oil sump（13）, motor（7）Including fixed
Son（72）And rotor（73）, it is characterised in that the compressor also includes blast pipe（8）, upper balance weight（6）, motor protecting cover
（23）, motor protecting cover（23）Space and motor protecting cover exterior space, institute where motor upper space is separated into balance weight
State blast pipe（8）One end passes through housing（1）, motor protecting cover（23）And deeply go up balance weight place space.
2. high efficient oil as claimed in claim 1 separates screw compressor, it is characterised in that space where upper balance weight is upper machine
Frame（2）, motor（7）And motor protecting cover（23）The space of formation.
3. high efficient oil as claimed in claim 1 separates screw compressor, it is characterised in that motor protecting cover exterior space is electricity
Machine protective cover（23）With housing（1）Between the space that is formed.
4. high efficient oil as claimed in claim 1 separates screw compressor, it is characterised in that the upper balance weight（6）Towards
There are radial direction straight flute or the spiral grooves of direction of rotation in motor side.
5. high efficient oil as claimed in claim 1 separates screw compressor, it is characterised in that the upper balance weight（6）Towards
Motor side has radially or the raised blade in direction of rotation.
6. use the oil separating method of high efficient oil as claimed in claim 1 separation screw compressor, it is characterised in that compressor
Motor when operating that is powered drives orbiter to carry out translation by bent axle, and low-temp low-pressure refrigerant enters through air intake duct, through dynamic vortex
After disk compression, become the air-fuel mixture state gas of HTHP, and discharged by the exhaust outlet of determine vortex disk, flow through electric motor protecting
Cover formed between housing exterior space, on the outside of the stator of motor, the oil sump of compression motor spindle is reached, so as to be successively performed pair
Motor outside, the cooling of oil sump, then by determining the gap of word and rotor, flow up, by upper balance weight, finally through blast pipe
Discharge, into system.
7. oil separating method as claimed in claim 6, it is characterised in that in process during balance weight, upper balance weight is in bent axle
Drive it is lower rotate, the air-fuel mixture state gas for flowing through balance weight produces strong centrifugal force, gas-liquid separation, and liquid is along motor protecting cover
Oil sump is flowed into, gas then continues up to be discharged in system from blast pipe.
8. a kind of high efficient oil separates screw compressor, including housing（1）, bent axle（71）, upper spider（2）, lower bearing bracket（5）, motor
（7）, with exhaust outlet（12）Determine vortex disk（3）, orbiter（4）, air intake duct（9）, oil sump（13）, blast pipe（8）, it is upper flat
Weigh block（6）, it is characterised in that the upper balance weight（6）With groove or projection.
9. high efficient oil as claimed in claim 8 separates screw compressor, it is characterised in that the upper balance weight（6）Towards
There are radial direction straight flute or the spiral grooves of direction of rotation in motor side.
10. high efficient oil as claimed in claim 8 separates screw compressor, it is characterised in that the upper balance weight（6）Towards
Motor side has radially or the raised blade in direction of rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711441337.6A CN107859626A (en) | 2017-12-27 | 2017-12-27 | A kind of high efficient oil separation screw compressor and its oil separating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711441337.6A CN107859626A (en) | 2017-12-27 | 2017-12-27 | A kind of high efficient oil separation screw compressor and its oil separating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107859626A true CN107859626A (en) | 2018-03-30 |
Family
ID=61707440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711441337.6A Pending CN107859626A (en) | 2017-12-27 | 2017-12-27 | A kind of high efficient oil separation screw compressor and its oil separating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107859626A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869282A (en) * | 2018-06-29 | 2018-11-23 | 广东金霸智能科技股份有限公司 | A kind of compressor |
| WO2024022477A1 (en) * | 2022-07-29 | 2024-02-01 | 丹佛斯（天津）有限公司 | Compressor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108114A (en) * | 1984-11-06 | 1986-08-27 | 株式会社东芝 | Rotary compressor for refrigerant |
| KR20090095377A (en) * | 2008-03-05 | 2009-09-09 | 엘지전자 주식회사 | Scroll compressor |
| CN202301020U (en) * | 2011-09-30 | 2012-07-04 | 安徽美芝压缩机有限公司 | Scroll compressor with oil separating board |
| CN105370576A (en) * | 2014-08-07 | 2016-03-02 | Lg电子株式会社 | Compressor |
| CN105443393A (en) * | 2014-05-29 | 2016-03-30 | 丹佛斯（天津）有限公司 | Compressor oil return device and compressor |
-
2017
- 2017-12-27 CN CN201711441337.6A patent/CN107859626A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108114A (en) * | 1984-11-06 | 1986-08-27 | 株式会社东芝 | Rotary compressor for refrigerant |
| KR20090095377A (en) * | 2008-03-05 | 2009-09-09 | 엘지전자 주식회사 | Scroll compressor |
| CN202301020U (en) * | 2011-09-30 | 2012-07-04 | 安徽美芝压缩机有限公司 | Scroll compressor with oil separating board |
| CN105443393A (en) * | 2014-05-29 | 2016-03-30 | 丹佛斯（天津）有限公司 | Compressor oil return device and compressor |
| CN105370576A (en) * | 2014-08-07 | 2016-03-02 | Lg电子株式会社 | Compressor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869282A (en) * | 2018-06-29 | 2018-11-23 | 广东金霸智能科技股份有限公司 | A kind of compressor |
| WO2024022477A1 (en) * | 2022-07-29 | 2024-02-01 | 丹佛斯（天津）有限公司 | Compressor |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180330 |