CN101749246A - Main shaft neck oil return mechanism of driving shaft of scroll compressor - Google Patents
Main shaft neck oil return mechanism of driving shaft of scroll compressor Download PDFInfo
- Publication number
- CN101749246A CN101749246A CN200910214581A CN200910214581A CN101749246A CN 101749246 A CN101749246 A CN 101749246A CN 200910214581 A CN200910214581 A CN 200910214581A CN 200910214581 A CN200910214581 A CN 200910214581A CN 101749246 A CN101749246 A CN 101749246A
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- main shaft
- neck part
- oil
- shaft neck
- bearing
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- 230000006835 compression Effects 0.000 claims abstract description 17
- 238000007906 compression Methods 0.000 claims abstract description 17
- 238000011084 recovery Methods 0.000 claims abstract description 11
- 239000000314 lubricant Substances 0.000 claims description 23
- 239000003921 oil Substances 0.000 abstract description 87
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000010687 lubricating oil Substances 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 238000013519 translation Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000012356 Product development Methods 0.000 description 1
- 238000001574 biopsy Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model provides a drive shaft main shaft neck oil return mechanism of scroll compressor, scroll compressor is including setting up compression mechanism portion and the motor part in sealed container, compression mechanism portion is including the whirlpool dish that moves that meets with quiet whirlpool dish, and be used for supporting the frame that moves whirlpool dish and drive shaft, the back that moves the whirlpool dish is provided with the drive division, the drive shaft passes through drive bearing and the drive division that moves the whirlpool dish and meets with the frame, the drive shaft passes through the main bearing and meets with the frame, the up end of frame forms the space that holds the drive division that moves the whirlpool dish with the back that moves the whirlpool dish, this space also is as the oil recovery chamber of accomodating the lubricating oil from drive bearing and main bearing simultaneously, the main shaft neck of drive shaft has seted up annular oil groove in the one end of keeping away from moving the whirlpool. The invention has the characteristics of low manufacturing cost, capability of ensuring sufficient oil return of the main shaft neck and reduction of discharge of lubricating oil along with high-pressure gas.
Description
Technical field
The present invention relates to the main shaft neck part oil return mechanism of driving shaft of a kind of scroll compressor, particularly a kind of scroll compressor.
Background technique
Scroll compressor in the scroll compressor agent structure of having announced, mainly adopts low-pressure structure and high voltage structures in the field of Refrigeration and Air-conditioning extensive use.The high voltage structures compressor is more and more paid attention in product development because of its advantage of using in the frequency conversion field.
As patent documentation 1: the Japanese documentation spy open among the flat 9-79153 announcement, this kind compressor contains scroll type compressor structure and motor in the shell of sealing, this compressing mechanism then is linked on the motor by live axle, between compressing mechanism and motor, be provided with bearing, on the other hand, the above-mentioned compressor structure is connected with suction pipe, is connected with spraying pipe on the shell.This spraying pipe is positioned near the bearing.
In above-mentioned compressor, live axle and bearing constitute shaft bearing, and as shown in Figure 1, this shaft bearing possesses live axle 103, reach the bearing 105 that live axle 103 is run through, and in addition, are formed with fuel feeding path 107 on above-mentioned live axle 103.And lubricant oil is from fuel feeding path 107 gap by the inner peripheral surface of the outer surface that divides branch road 109 and supply with live axle 103 and bearing 105.
Be conducted to the lubricant oil in above-mentioned gap, as shown in Figure 2, can oil film pressure take place, realize the bent axle hydrodynamic lubrication because of the wedge shape effect.This oil film pressure is maximum at the axle direction central part, and past more two ends are then more little, and consequently, the lubricant oil in bearing pair gap is discharged from from the upper-end surface 111 and the lower end surface 113 of bearing 105.If lubricant oil flows out from the lower end surface 113 of bearing 105, enter in the housing of compressor, because outlet pipe is opened on this zone in the housing, will cause a large amount of lubricant oil to discharge compressor, and then reduce the heat exchange efficiency of air-conditioning system with pressurized gas.
Patent documentation 2: propose among the Chinese patent literature CN1518640A, as shown in Figure 3, the 253 open loop shape oil grooves 251 in the axle journal end, and pass through in bearing 241 perforates, and on bearing 241, slot, forming oily path, can overcome the above problems.Among the figure: 229 is crankshaft oil gallery, and 231 is the main journal oilhole, and 243 is brearing bore, and 247 are recovery approach radially, and 249 is the normal direction recovery approach.
But this kind method manufacturing procedure is many, causes manufacture cost to rise.Secondly,, Bearing Installation is had the specific direction requirement, when reality is used,, cause manufacture cost further to rise in case setup error will cause scrapping at interior whole parts together with frame because of its structural feature.In addition, the also not clear and definite annular oil groove of this technology is specifically offered the position, also is difficult to operation in the practice.
Summary of the invention
Purpose of the present invention aim to provide a kind of simple and reasonable, fabricating cost is low, easy to operate, the main shaft neck part oil return that can guarantee scroll compressor fully, can take away the heat that is produced because of friction between main shaft neck part and the main bearing rapidly, and can suppress simultaneously to flow out away from the lubricant oil of movable orbiting scroll main bearing side, and then reduce lubricant oil with pressurized gas discharge, the main shaft neck part oil return mechanism of driving shaft of scroll compressor applied widely, to overcome deficiency of the prior art.
Press the main shaft neck part oil return mechanism of driving shaft of a kind of scroll compressor of this purpose design, scroll compressor comprises compression mechanical part and the motor section that is arranged in the seal container, compression mechanical part comprises the movable orbiting scroll that joins with quiet whirlpool dish, and the frame that is used to support movable orbiting scroll and live axle, the back of movable orbiting scroll is provided with drive portion, live axle joins by the drive portion of driving bearing and movable orbiting scroll, live axle joins by main bearing and frame, the upper-end surface of frame and the movable orbiting scroll back side form the space of the drive portion that holds movable orbiting scroll, this space is also simultaneously as the oily recovery chamber of taking in from the lubricant oil of driving bearing and main bearing, its structure characteristic is that the main shaft neck part of live axle offers annular oil groove at the end away from movable orbiting scroll, the outer wall of main shaft neck part is provided with oily path, and this oil path is communicated with annular oil groove and oily recovery chamber.
Described oily path is a straight trough, the direction of this straight trough and the parallel axes of main shaft neck part.Or oily path is a spiral chute.
Be provided with oil supply gallery in the described live axle, this oil supply gallery is positioned at the main bearing position and is provided with oil outlet, and oil outlet communicates with oily path.The oil channel setting is in the non-bearing district of main shaft neck part.
The position of offering of described annular oil groove is 5～8mm with end face distance away from an end of movable orbiting scroll.The section area of annular oil groove is greater than the section area of oily path.
The present invention offers annular oil groove by the main shaft neck part with live axle at the end away from movable orbiting scroll, the outer wall of main shaft neck part is provided with oily path, this oil path is communicated with annular oil groove and oily recovery chamber, pressure was told the big problem of oil mass for the scroll compressor of high pressure in this structure not only can effectively solve, the lubricant oil that is conducted to the gap between live axle and the main bearing is guided to the oily path of specific passageways, can suppress simultaneously the lubricant oil that flows out by main bearing one end at least, and inhibition sprays in the gas and contains lubricant oil; Can also cut down finished cost, reduce matching requirements, and then evade the potential risk that manufacture cost rises.
Description of drawings
Fig. 1 is the sectional drawing of the main shaft neck part bearing of the scroll compressor in the patent documentation 1.
Fig. 2 is the oil film pressure distribution map of the main shaft neck part bearing of patent documentation 1 mesoscale eddies compressor.
Fig. 3 is the biopsy cavity marker devices structural representation of the main shaft neck part of patent documentation 2 mesoscale eddies compressors.
Fig. 4 is one embodiment of the invention sectional structure schematic representation.
Fig. 5 dissects structural representation during for the mutual interlock of the quiet whirlpool dish and the vortex ring of movable orbiting scroll.
Fig. 6 is the local structure for amplifying schematic representation of the live axle main shaft neck part among the present invention.
Fig. 7 is the sectional drawing of the main shaft neck part main bearing among the present invention.
Fig. 8 is the oil film pressure distribution map of the main shaft neck part main bearing among the present invention.
Among the figure: 1 is seal container, and 2 is compression mechanical part, and 3 is movable orbiting scroll, 3a is a moving vortex circle, and 3b is the end plate of movable orbiting scroll, and 3c is the drive portion of movable orbiting scroll, 3d is the back side of movable orbiting scroll, and 4 is quiet whirlpool dish, and 4a is quiet vortex ring, 4b is the end plate of quiet whirlpool dish, and 4c is a suction port, and 4d is an exhaust port, 5 is live axle, and 5a is the oily path of the master of live axle, and 5b is the eccentric oily path of live axle, 5c is the annular oil groove of main shaft neck part, and 5d is the oil outlet of main shaft neck part, and 5e is the oily path of main shaft neck part, 5f is the main shaft neck part of live axle, and 6 is frame, and 6a is the upper-end surface of frame, 7 is motor section, and 8 is the cross slip ring, and 9 is pressing chamber, 10 is suction chamber, and 11 is sucking pipe, and 12 is rotor, 13 is stator, and 14 is discharge tube, and 15 is safety check, 16 is main bearing, and 17 is oily recovery chamber, and 18 is driving bearing, 20 is upper shell, and 21 is main casing, and 22 is lower shell body.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described.
Referring to Fig. 4, scroll compressor, by live axle 5, bent axle just is connected compression mechanical part 2 and is accommodated in the seal container 1 with motor section 7.Compression mechanical part 2, by quiet whirlpool dish 4, movable orbiting scroll 3, frame 6, live axle 5 and partition ring 8 as critical piece.
Quiet whirlpool dish 4 has end plate 4b and upright Vorticose quiet vortex ring 4a on this end plate 4b.Quiet whirlpool dish 4 is fastened on the upside of frame 6 by screw.The periphery of frame 6 is fixed on the seal container 1, in the bottom of seal container 1, has the main bearing 16 of supporting driving shaft 5 rotations.
Seal container 1 comprises upper shell 20, main casing 21 and the lower shell body 22 that joins successively from top to bottom.
Peripheral part at quiet whirlpool dish 4 is provided with suction port 4c.This suction port 4c is parallel with the end plate 4b of quiet whirlpool dish 4.In suction port 4c, be pressed into the suction pipe 11 that is connected with outer loop.Safety check 15 is installed in the exhaust port 4d top that 4 central parts are coiled in quiet whirlpool.
Movable orbiting scroll 3 has end plate 3b and the Vorticose moving vortex circle 3a that stands on this end plate 3b.At movable orbiting scroll 3 backs protruding drive portion 3c is set.Movable orbiting scroll 3 to be set with respect to quiet whirlpool dish 4 modes of turning round translation.The revolution translation of movable orbiting scroll 3 is to be stoped by the cross slip ring 8 that stops parts as rotation not carry out rotation, and revolves round the sun.
The structure of compression mechanical part 2 is to be reached by the quiet whirlpool dish 4 that Vorticose quiet vortex ring 4a, moving vortex circle 3a is placed inboard and interlock respectively and form pressing chamber 9 and suction chamber 10 by movable orbiting scroll 3.The suction port 4c of quiet whirlpool dish 4 is connected with this suction chamber 10.
Motor section 7 is made of stator 13 and rotor 12.Stator 13 is fixed in the seal container 1 by shrink fit etc., and rotor 12 is configured in the stator 13 rotationally, and fixes by being pressed into live axle 5.Supply with motor section 7 with electric power by tenminal block.
Live axle 5 joins by main bearing 16 and frame 6.The upper-end surface 6a of frame 6 and movable orbiting scroll back side 3d form the space of the drive portion 3c that holds movable orbiting scroll 3, and this space is also simultaneously as the oily recovery chamber of taking in from the lubricant oil of driving bearing 18 and main bearing 16 17.
Below, describe with regard to the compression of scroll compressor.
Rotor 12, applies rotating force and is rotated the rotating magnetic field that is produced by stator 13.Be fixed on the live axle 5 on the rotor 12, be rotated action along with the rotation of rotor 12.The movable orbiting scroll 3 that is connected with live axle 5 does not carry out rotation according to the effect of cross slip ring 8, and revolves round the sun.Utilize the revolution motion of movable orbiting scroll 3, suction port 4c is drawn into refrigerant gas in the compression mechanical part 2 from the refrigerating circulation system of outside.
The refrigerant gas that is inhaled into, through suction port 4c, from the suction chamber 10 arrival pressing chambers 9 of quiet whirlpool dish 4, and quilt is gradually reduced the back from exhaust port 4d in pressing chamber 9, opens safety check 15, is discharged in the seal container 1.The refrigerant gas that is discharged with motor section 7 coolings, is supplied with outside refrigerating circulation system by discharge tube 14 in advance again.
Below, compression mechanical part 2 is elaborated.
In addition, when scroll compressor when operating condition enters halted state, in order to prevent to produce the phenomenon that flows backwards from relief opening 4d to compression mechanical part 2, and on exhaust port 4d, be provided with safety check 15 by the gas refrigerant of compression mechanical part 2 compressions.
Be provided with oil supply gallery in the live axle 5, this oil supply gallery is positioned at main bearing 16 positions and is provided with oil outlet and communicates with oily path 5e.Oil supply gallery comprises main fuel feeding path 5a and eccentric part fuel feeding path 5b.Eccentric oil supply gallery 5b is communicated with main oil supply gallery 5a downwards from the upper-end surface of live axle 5; Main oil supply gallery 5a upwards is communicated with eccentric oil supply gallery 5b from the lower end surface of live axle 5; Oil outlet 5d is communicated with eccentric oil supply gallery 5b.
Main bearing 16 is embedded in the frame 6, and live axle 5 runs through main bearing 16.The autonomous oil supply gallery 5a of lubricant oil is to eccentric oil supply gallery 5b, enters into gap between live axle 5 and the main bearing 16 via main shaft neck part oil outlet 5d.Be conducted to the lubricant oil in live axle 5 and main bearing 16 gaps, can produce as shown in Figure 8 oil film pressure because of the wedge shape effect.In Fig. 8, transverse axis is represented the position of main bearing 16 at axial direction, and the longitudinal axis is represented oil film pressure.The oil film pressure at the two ends up and down of main bearing 16 equals the internal pressure of seal container 1.Under the oil film pressure effect that is chevron, lubricant oil flows to the two ends of the main shaft neck part 5f of live axle 5.
The main shaft neck part 5f of live axle 5 offers annular oil groove 5c at the end away from movable orbiting scroll, and oil groove 5c is formed at the underpart of main shaft neck part 5f, forms the annular groove of crossing over full week of live axle main shaft neck part 5f.The lubricant oil that flows towards main shaft neck part 5f lower end flow to oil groove 5c.
The outer wall of main shaft neck part 5f is provided with oily path 5e, and this oil path 5e is communicated with annular oil groove 5c and oily recovery chamber 17.The section area of annular oil groove 5c is greater than the section area of oily path 5e.The position of offering of annular oil groove 5c is 5～8mm with end face distance d away from an end of movable orbiting scroll 3.
This oil path 5e both can be straight trough, the parallel axes of the direction of this straight trough and main shaft neck part 5f, the also spiral chute that can be provided with for the outer wall along main shaft neck part 5f.
Because oil groove 5c communicates with the upper end of the main shaft neck part 5f of live axle 5 by oily path 5e, so its oil film pressure almost equates with the internal pressure of seal container 1.Under the effect of as shown in Figure 8 oil film pressure, oil groove 5c has become the sealed department of lubricant oil, prevents that lubricant oil from flowing out from the lower end of described main shaft neck part 5f, thereby suppresses to contain lubricant oil in the ejection gas.
The main shaft neck part 5f of live axle 5 go up main shaft neck part oil supply hole 5d direction on have the oily path 5e that is used to guide lubricant oil, the lubricant oil that can will be fed in the gap between live axle 5 and the main bearing 16 is directed to specific position.To take away the heat that the shaft bearing friction is produced, prevent that the lubrication property of lubricant oil from worsening.
As mentioned above, the invention provides shaft bearing oil return structure simple in structure, the compressor that not only can effectively solve high voltage structures is told the big problem of oil mass, can also cut down finished cost, reduce matching requirements, and then evade the potential risk that manufacture cost rises.
The present invention can have multiple way of realization and can not depart from its mainly spirit, therefore, the above embodiments are not any details that is confined to above explanation, and should think, within the spirit and scope of described claims defined, or the changes and improvements within the equivalent of these spirit and scope all are that its claims are contained.
Claims (7)
1. the main shaft neck part oil return mechanism of driving shaft of a scroll compressor, scroll compressor comprises compression mechanical part (2) and the motor section (7) that is arranged in the seal container (1), compression mechanical part comprises the movable orbiting scroll (3) that joins with quiet whirlpool dish (4), and the frame (6) that is used to support movable orbiting scroll and live axle (5), the back of movable orbiting scroll is provided with drive portion (3c), live axle joins by the drive portion of driving bearing (18) with movable orbiting scroll, live axle joins by main bearing (16) and frame, the upper-end surface of frame (6a) and the movable orbiting scroll back side (3d) form the space of the drive portion that holds movable orbiting scroll, this space is also simultaneously as the oily recovery chamber of taking in from the lubricant oil of driving bearing and main bearing (17), the main shaft neck part (5f) that it is characterized in that live axle offers annular oil groove (5c) at the end away from movable orbiting scroll, the outer wall of main shaft neck part is provided with oily path (5e), and this oil path is communicated with annular oil groove and oily recovery chamber.
2. the main shaft neck part oil return mechanism of driving shaft of scroll compressor according to claim 1 is characterized in that described oily path (5e) is a straight trough, the parallel axes of the direction of this straight trough and main shaft neck part (5f).
3. the main shaft neck part oil return mechanism of driving shaft of scroll compressor according to claim 1 is characterized in that described oily path (5e) is a spiral chute.
4. according to the main shaft neck part oil return mechanism of driving shaft of claim 2 or 3 described scroll compressors, it is characterized in that being provided with oil supply gallery in the described live axle (5), this oil supply gallery is positioned at main bearing (16) position and is provided with oil outlet (5d), and oil outlet communicates with oily path (5e).
5. the main shaft neck part oil return mechanism of driving shaft of scroll compressor according to claim 4 is characterized in that described oily path (5e) is arranged on the non-bearing district of main shaft neck part (5f).
6. the main shaft neck part oil return mechanism of driving shaft of scroll compressor according to claim 1 is characterized in that the position of offering of described annular oil groove (5c) is 5～8mm with end face distance (d) away from an end of movable orbiting scroll (3).
7. the main shaft neck part oil return mechanism of driving shaft of scroll compressor according to claim 1 is characterized in that the section area of the section area of described annular oil groove (5c) greater than oily path (5e).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910214581A CN101749246A (en) | 2009-12-29 | 2009-12-29 | Main shaft neck oil return mechanism of driving shaft of scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910214581A CN101749246A (en) | 2009-12-29 | 2009-12-29 | Main shaft neck oil return mechanism of driving shaft of scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101749246A true CN101749246A (en) | 2010-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910214581A Pending CN101749246A (en) | 2009-12-29 | 2009-12-29 | Main shaft neck oil return mechanism of driving shaft of scroll compressor |
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| CN (1) | CN101749246A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105074211A (en) * | 2013-03-29 | 2015-11-18 | 大金工业株式会社 | Compressor |
| CN105370570A (en) * | 2014-08-06 | 2016-03-02 | Lg电子株式会社 | Scroll compressor |
| WO2018018880A1 (en) * | 2016-07-29 | 2018-02-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotary cylinder piston compressor pump and compressor using same |
| US11566619B2 (en) | 2016-07-29 | 2023-01-31 | Gree Green Refrigeration Technology Center Co., Ltd. Of Zhuhai | Rotary cylinder piston compressor pump and compressor with rotary cylinder piston compressor pump |
-
2009
- 2009-12-29 CN CN200910214581A patent/CN101749246A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105074211A (en) * | 2013-03-29 | 2015-11-18 | 大金工业株式会社 | Compressor |
| CN105074211B (en) * | 2013-03-29 | 2016-08-17 | 大金工业株式会社 | Compressor |
| CN105370570A (en) * | 2014-08-06 | 2016-03-02 | Lg电子株式会社 | Scroll compressor |
| US9816505B2 (en) | 2014-08-06 | 2017-11-14 | Lg Electronics Inc. | Scroll compressor with shaft eccentric lubrication |
| CN105370570B (en) * | 2014-08-06 | 2017-11-17 | Lg电子株式会社 | Scroll compressor |
| WO2018018880A1 (en) * | 2016-07-29 | 2018-02-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotary cylinder piston compressor pump and compressor using same |
| US11566619B2 (en) | 2016-07-29 | 2023-01-31 | Gree Green Refrigeration Technology Center Co., Ltd. Of Zhuhai | Rotary cylinder piston compressor pump and compressor with rotary cylinder piston compressor pump |
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| PB01 | Publication | ||
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Open date: 20100623 |