CN1904362A - Hermetic compressor - Google Patents
Hermetic compressor Download PDFInfo
- Publication number
- CN1904362A CN1904362A CNA2006101064203A CN200610106420A CN1904362A CN 1904362 A CN1904362 A CN 1904362A CN A2006101064203 A CNA2006101064203 A CN A2006101064203A CN 200610106420 A CN200610106420 A CN 200610106420A CN 1904362 A CN1904362 A CN 1904362A
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- China
- Prior art keywords
- oil
- oil circuit
- shaft portion
- main shaft
- bearing
- 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.)
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- 238000009434 installation Methods 0.000 claims abstract description 3
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 130
- 230000006835 compression Effects 0.000 description 33
- 238000007906 compression Methods 0.000 description 33
- 238000005057 refrigeration Methods 0.000 description 18
- 239000003795 chemical substances by application Substances 0.000 description 17
- 238000001816 cooling Methods 0.000 description 9
- 230000033001 locomotion Effects 0.000 description 9
- 239000003507 refrigerant Substances 0.000 description 8
- 239000000428 dust Substances 0.000 description 4
- 241001212149 Cathetus Species 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
- F04B39/0223—Lubrication characterised by the compressor type
- F04B39/023—Hermetic compressors
- F04B39/0238—Hermetic compressors with oil distribution channels
- F04B39/0246—Hermetic compressors with oil distribution channels in the rotating shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
- F04B39/0223—Lubrication characterised by the compressor type
- F04B39/023—Hermetic compressors
- F04B39/0238—Hermetic compressors with oil distribution channels
- F04B39/0246—Hermetic compressors with oil distribution channels in the rotating shaft
- F04B39/0253—Hermetic compressors with oil distribution channels in the rotating shaft using centrifugal force for transporting the oil
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0094—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 crankshaft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
- F04B39/0223—Lubrication characterised by the compressor type
- F04B39/0276—Lubrication characterised by the compressor type the pump being of the reciprocating piston type, e.g. oscillating, free-piston compressors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/10—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for axial load mainly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/06—Crankshafts
- F16C3/14—Features relating to lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/42—Pumps with cylinders or pistons
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Compressor (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
A hermetic compressor includes: a hermetic container having an oil sump defined in a bottom thereof; a frame arranged in the hermetic container and including a hollow portion; a rotating shaft rotatably inserted in the frame to penetrate through the hollow portion, the rotating shaft having an oil channel array to guide oil upward from the oil sump; and a thrust bearing inserted in a bearing installation groove, which is formed around an upper end of the hollow portion of the frame. The thrust bearing is configured to come into rolling contact with the rotating shaft to support an axial load of the rotating shaft, and the oil channel array is configured to supply at least a portion of the oil to the thrust bearing.
Description
Technical field
The present invention relates to a kind of closed compressor, and more particularly, the present invention relates to a kind of closed compressor, wherein: thrust-bearing rotates with running shaft and contacts, with the axial load of supporting rotating shaft.
Background technique
Usually, closed compressor is the equipment that a kind of fluid by compression and supply such as refrigeration agent is realized the refrigeration cycle of air-conditioning or refrigerator.Sealing formula compressor comprises: the seal container that forms the perimeter of compressor; The compression unit that is used for compressed refrigerant; With the driver element that is used to provide the refrigeration agent compression power, this compression unit and driver element are disposed in the seal container.
Utilize oil supply structure, traditional closed compressor can supply oil to the location, such as the gap between the hollow portion of the framework below running shaft and the thrust-bearing and the friction area of compression unit.Yet although the load of running shaft is applied in basically to thrust-bearing, traditional closed compressor is to thrust-bearing fuel feeding deficiency.Therefore, after compressor uses for a long time, the upper and lower thrust washer and the ball wear of thrust-bearing, thus suppressed the steady rotation of running shaft.And, if in thrust-bearing, accumulated dust (usually owing to wearing and tearing cause), the efficient that reduces to rub of this entail dangers to thrust-bearing, this causes compressor reliability to descend.
Summary of the invention
Therefore, for addressing the above problem the present invention has been proposed, and one aspect of the present invention is to provide a kind of closed compressor, and it has and is used for lubricated and running shaft and rotates the improvement structure that contacts with the thrust-bearing of the axial load of supporting rotating shaft, and realization is to the improvement of product reliability.
For this reason, a unrestricted aspect of the present invention provides a kind of closed compressor, and sealing formula compressor comprises: the seal container with the oil sump that forms in its bottom; Be arranged in the seal container and comprise the framework of hollow portion; Rotatably insert in the framework passing the running shaft of hollow portion, this running shaft has the oil circuit array with from oil sump guiding oil upwards; And thrust-bearing, this thrust-bearing is inserted in the Bearing Installation groove of the upper end formation of the hollow portion of framework, this thrust-bearing rotates the axial load that contacts with supporting rotating shaft with running shaft, and wherein: this oil circuit array is constructed at least a portion of described oil directly is fed to thrust-bearing.
Description of drawings
In conjunction with the accompanying drawings, by embodiment's following description, these and other aspect of the present invention and advantage will become obviously and be more readily understood, wherein:
Fig. 1 is the cross-section side view according to the closed compressor of non-limiting aspect of the present invention;
Fig. 2 is the section partial side view according to the running shaft of the closed compressor of another non-limiting aspect of the present invention;
Fig. 3 is the enlarged perspective of unrestricted example of the running shaft of closed compressor, adopts local section to show running shaft;
Fig. 4 is the section plan view according to the branch road of the running shaft of the closed compressor of non-limiting example of the present invention;
Fig. 5 is the cross-section side view according to the branch road of the closed compressor of another non-limiting example of the present invention; With
Fig. 6 is the cross-section side view according to the branch road of the closed compressor of another non-limiting example of the present invention.
Embodiment
Now, will be in detail with reference to example non-limiting example of the present invention illustrated in the accompanying drawings, wherein same reference numerals is represented components identical all the time.Describe embodiment hereinafter with reference to accompanying drawing the present invention is described.
In order to illustrate, in closed compressor, compression unit and driver element can lay respectively at the upside and the downside of framework 11.This compression unit can comprise cylinder and piston 15.This cylinder can be disposed in the lateral attitude of the upper end of framework 11, and can innerly determine compression chamber.This piston 15 can be configured in the to-and-fro motion of compression chamber cathetus with compressed refrigerant.This driver element can comprise: the stator 12 that is connected to the lower end of framework 11; Be positioned at stator 12 inside to carry out electric interactive rotor 13 with stator 12.
Running shaft 20 can be installed in the framework and be sent to compression unit with the driving force with driver element.This running shaft 20 can rotatably be inserted the hollow portion 11a of framework 11.
The underpart of this running shaft 20 can be outstanding downwards from the hollow portion of framework, so that it is press fit in the rotor 13, to rotate simultaneously with rotor 13.But the upper end portion lateral deviation of this running shaft 20 is to form eccentric part 22.By connecting rod 18 is arranged between eccentric part 22 and the piston, the eccentric part 22 of running shaft 20 can be connected to piston, and rotatablely moving of running shaft 20 is converted into the straight reciprocating motion of piston 15 like this.
Thrust-bearing 30 can be around running shaft 20 assemblings between the eccentric part 22 of running shaft 20 and framework 11.This thrust-bearing 30 can comprise: annular upper portion and bottom thrust washer 31 and 32, and they can rotate with running shaft and contact (rolling contact), with the axial load of supporting rotating shaft; And the ball between upper and lower thrust washer 31 and 32 33.In order to insert thrust-bearing 30, framework 11 can comprise the annular bearing insertion groove 11b that forms around the upper end of hollow portion 11a.
Utilize above-mentioned non-limiting structure, if running shaft 20 is according to the electric interaction effect rotation between stator 12 and the rotor 13, in the compression chamber 14a of cylinder, be connected to piston 15 straight reciprocating motions of the eccentric part of running shaft 20 through connecting rod 18, with compressed refrigerant.During this refrigeration agent squeeze operation, rotate the thrust-bearing 30 that contacts by using with running shaft, the axial load of running shaft 20 is supported.
For lubricated and cooling, the also configurable oil supply structure of this compressor is to supply oil to the friction area of running shaft 20 and compression unit during the refrigeration agent squeeze operation.This oil supply structure can comprise: oil sump 19, this oil sump 19 are determined in the bottom of seal container 10 with the oil of storing predetermined amount; Oil pick device 40, this oil pick device 40 are connected to the lower end of running shaft 20 upwards to extract oil from oil sump 19; With oily channel array, the oil that this oil channel array upwards extracts oily pick device 40 is inducted into the gap between the hollow portion of running shaft 20 and framework 11a, and the arrival compression unit.
This oil circuit array can comprise: first oil circuit, and this first oil circuit is formed in the bottom of running shaft around the lower end of the hollow portion of framework; Second oil circuit, the external peripheral surface that this second oil circuit is formed on the running shaft under the thrust-bearing are sentenced with first oil circuit and are communicated with; This second oil circuit is set for the lubricated of gap between the hollow portion of running shaft and framework, and has the spiral chute shape; With the 3rd oil circuit, the 3rd oil circuit is formed in the running shaft to be communicated with second oil circuit, and the 3rd oil circuit extends to the upper end of running shaft.
Adopt above-mentioned non-limiting oil supply structure, when running shaft rotated during the refrigeration agent squeeze operation, through oily pick device, the oil that is stored in the oil sump was drawn into first oil circuit.Subsequently, the oil of extraction is through second oil circuit, with the gap between the hollow portion of lubricated and cooling running shaft and framework.Then, utilize the 3rd oil circuit, the oil that has passed second oil circuit is upwards shifted onto the upper end of running shaft, so that it is sent to compression unit.Therefore, oil is used to the join domain between lubricated and cooling piston 15 and the connecting rod 18, and final, turns back to oil sump 19.When a plurality of oil circuit, the oil that returns can repeatedly be used to slide and cool off the friction area of running shaft 20 and compression unit.
With reference to Fig. 1, closed compressor according to the present invention comprises seal container 10, and it can be divided into upper and lower container 10a connected to one another and 10b.
This driver element can comprise: fixing stator 12, this stator 12 are configured to produce electromagnetic force when received current; Be positioned at stator 12 inside to carry out electric interactive rotor 13 with stator 12.This compression unit can comprise cylinder block 14, piston 15, cylinder head 16 and valve device 17.This cylinder body 14 can be integrally formed in the lateral position of the upper end of framework 11, and can innerly determine compression chamber 14a.This piston 15 can be accommodated in the cylinder body 14 with in the to-and-fro motion of compression chamber 14a cathetus with compressed refrigerant.This cylinder cap 16 can be connected to an end of cylinder body 14 to be sealed shut compression chamber 14a.This cylinder cap 16 can innerly be determined refrigeration agent discharge chamber 16a and refrigerant suction 16b.This valve device 17 can be between cylinder body 14 and cylinder cap 16.This valve device 17 may command refrigeration agents stream is so that refrigeration agent is introduced into pressing chamber 14a or is discharged into refrigeration agent discharge chamber 16a from compression chamber 14a from refrigeration agent suction chamber 16b.This framework 11 can comprise the 11a of central hollow portion, so that running shaft 20 rotatably is inserted among the hollow portion 11a, is sent to compression unit with the driving force with driver element.
With reference to Fig. 2, this running shaft 20 can comprise: main shaft portion 21; Eccentric shaft portion 22; And the weight balancing part 23 between main shaft portion 21 and the eccentric shaft portion 22.The top of this main shaft portion 21 rotatably is supported among the hollow portion 11a of framework 11, and the bottom of main shaft portion 21 can be press-fitted in the central authorities of rotor 13 of driver element, so that running shaft 20 rotates simultaneously with rotor 13.The eccentric upper end that forms running shaft 20 is sentenced at the top that this eccentric shaft portion 22 can be positioned at main shaft portion 21.This weight balancing part 23 can compensate because the imbalance of the running shaft 20 that eccentric shaft portion 22 causes rotatablely moves.Eccentric shaft portion 22 and weight balancing part 23 form the eccentric part of running shaft 20 together.Connecting rod 18 can be between the piston 15 of eccentric shaft portion 22 and compression unit.This connecting rod 18 can convert rotatablely moving of running shaft 20 to the straight reciprocating motion of piston 15, so that piston 15 is in the to-and-fro motion of compression chamber 14a cathetus.
In the eccentric part of running shaft 20 and the position between the framework 11, the assembling of the upper end of thrust-bearing 30 compassable main shaft portion 21.This thrust-bearing 30 can comprise: annular upper portion and bottom thrust washer 31 and 32, and they can rotate with running shaft 20 and contact (rolling contact), with the axial load of supporting rotating shaft 20; And the ball between upper and lower thrust washer 31 and 32 33.In order to insert thrust-bearing 30, framework 11 can comprise the annular bearing insertion groove 11b that forms around the upper end of hollow portion 11a.
Utilize said structure, if applied electric current, according to the electric interaction effect between stator 12 and the rotor 13, running shaft 20 is with rotor 13 rotations.Therefore, piston 15 can be connected to the eccentric shaft portion 22 of running shaft 20 through connecting rod 18, and this piston 15 is in the to-and-fro motion of compression chamber 14a neutral line.Utilize this straight reciprocating motion of piston 15, by suction pipe 10c and refrigerant suction 16b, refrigeration agent can be introduced into compression chamber 14a.The refrigeration agent that is introduced into is compressed in compression chamber 14a, then, can be discharged into the outside of seal container 10 by refrigeration agent discharge chamber 16a and discharge pipe 10d.During the rotation of running shaft 20, the axial load of running shaft 20 can utilize thrust-bearing 30 (it rotates with running shaft 20 and contacts) to support.
For lubricated and cooling, according to the closed compressor of another unrestricted aspect of the present invention is configurable oil supply structure arranged, during the refrigeration agent squeeze operation, supplying oil to the friction area of running shaft 20 and compression unit, and thrust-bearing 30.This oil supply structure can comprise: oil sump 19, this oil sump 19 are determined in the bottom of seal container 10 and are configured to the oil of storing predetermined amount; With oily pick device 40, this oil pick device 40 is connected to the lower end of running shaft 20 and is configured to and upwards extracts oil from oil sump 19.
This oil pick device 40 can comprise: have the cylindrical oily pick-up part 41 of open upper and lower end, the lower end of this oil pick-up part 41 is immersed in the oil that is stored in the oil sump 19; With oily pickup blades 42, this oil pickup blades 42 is inserted in the oily pick-up part 41 upwards to extract oil from oil sump 19 when running shaft 20 rotates.This oil supply unit can also comprise oil circuit array 50, is directed to the friction area and the thrust-bearing 30 of running shaft 20 and compression unit with the oil that oily pick device 40 is upwards extracted.
This oil circuit array 50 can comprise first to the 3rd oil circuit 51,52,53 and the branch road 54.This first oil circuit 51 centers on the lower end of hollow portion 11a or is formed near the lower end of described hollow portion 11a in the main shaft portion 21 of running shaft 21.Second oil circuit 52 is formed on the external peripheral surface place of the main shaft portion 21 under the thrust-bearing 30, is used for gap lubricated between main shaft portion 21 and the hollow portion 11a.This second oil circuit 52 has the spiral chute shape and is configured to and is communicated with first oil circuit 51.The 3rd oil circuit 53 can be limited in the running shaft 20 to be communicated with second oil circuit 52.The 3rd oil circuit 53 can extend to the upper end of eccentric shaft portion 22 from the upper end of second oil circuit 52 on the main shaft portion 21.This branch road 54 can comprise straight hole, and this straight hole is radially or radially from the position branch of the 3rd oil circuit 53 to the outer circumferential surface of main shaft portion 21, to be communicated with thrust-bearing 30.
In order to guide the continuous easy motion of oil between the oil circuit, the first communication paths 55a can be formed between the lower end of the upper end of first oil circuit 51 and second oil circuit 52, and the second communication paths 55b can be formed between the lower end of the upper end of second oil circuit 52 and the 3rd oil circuit 53.In addition, for when being subjected to the rotary centrifugal force of running shaft 20, oil can more effectively upwards be extracted, first oil circuit 51 can tilt to eccentric part, so that central shaft C from main shaft portion 21 departs from it.In addition, the 3rd oil circuit 53 can depart from the location, central shaft C ground of main shaft portion, to locate near eccentric part ground.
Therefore, the 3rd oil circuit 53 that departs from the central shaft C of main shaft portion 21 can be located near the external peripheral surface of main shaft portion 21.This has realized the simple punching of branch road 54.In other words, can be from the branch road 54 of the 3rd oil circuit 53 branches from the external peripheral surface punching easily of main shaft portion 21.
Adopt above-mentioned oil supply structure, when running shaft 20 rotates, utilize the pump power of oily pick device 40 during the refrigeration agent squeeze operation, the oil that is stored in the oil sump 19 can be by the suction first oily path 51 that makes progress.Subsequently, the oil of extraction through the second oily path 52 with lubricated and cooling in the hollow portion 11a of the framework under the thrust-bearing 30 11 and the gap between the main shaft portion 21.The part of the oil by second oil circuit 52 can be along the upper end that the 3rd oil circuit 53 continues upwards be pushed into eccentric shaft portion 22, so that it is sent to compression unit, with the join domain between lubricated and cooling piston 15 and the connecting rod 18.Pass the remaining oil of the 3rd oil circuit 53,, can directly be sent to thrust-bearing 30 with lubricated and cooling thrust-bearing 30 through branch road 54.
Because the oil that upwards guides along oil circuit array 50 can directly be sent to thrust-bearing 30, therefore, even after compressor has used for a long time, closed compressor also can greatly make the upper and lower thrust washer 31 and 32 and the wearing and tearing minimum of ball 33 of thrust-bearing 30.Therefore, thrust-bearing 30 can be realized the steady rotation of running shaft 20 continuously.In addition, though upper and lower thrust washer 31 and 32 and ball 33 may wear to certain program (thereby producing micro-dust), the oil that directly is sent to thrust-bearing 30 can prevent effectively that also dust accumulation is on thrust-bearing 30.This make thrust-bearing 30 rotating force since the wearing and tearing that cause of dust reduce reduce to minimum.
After discharging from the upper end of branch road 54 or the 3rd oil circuit 53, used oil can turn back to oil sump 19, when oil can repeatedly be used with box lunch process oil circuit array 50 like this, and lubricated and cooling running shaft 20, compression unit and thrust-bearing 30.
Of the present invention another unrestricted aspect in, branch road 54 can extend from the 3rd oil circuit 53 along the direction relative with the central shaft C of main shaft portion 21, this is useful.When running shaft 20 rotations, this structure makes branch road 54 receive maximum centrifugal force, and the oil mass that causes being fed to thrust-bearing 30 through branch road 54 increases.
Yet if excessive oil enters branch road 54, nearly all like this guides the oil that enters the 3rd oil circuit 53 to be supplied to thrust-bearing 30 from second oil circuit 52, does not have the upper end that oil arrives the 3rd oil circuit 53 basically.This has stoped oily upper end from the 3rd oil circuit 53 to be sent to compression unit, has suppressed the effectively lubricating and the cooling of compression unit.Therefore, branch road 54 is preferred to be extended along the direction of intersecting with central shaft C and the 3rd oil circuit 53 lines connected to one another with main shaft portion 21, so that oil can be fed to thrust-bearing 30, and can be to the bad influence of supply generation of oil to pressure unit.
Even when direction extension that branch road 54 intersects along central shaft C and the connecting line between the 3rd oil circuit 53 with main shaft portion 21, if branch road 54, can not prevent effectively also that oil from focusing on branch road 54 from the position branch of the 3rd oil circuit 53 relative with the central shaft C of main shaft portion 21.On the contrary, if branch road 54 so just can prevent that from the position branch in the face of the 3rd oil circuit 53 of the central shaft C of main shaft portion 21 oil is supplied in the branch road 54.Because this reason, shown in Fig. 3 and 4, more preferably, in position relative with the central shaft C of main shaft portion 21 and the approximate position intermediate in the face of the 3rd oil circuit 53 between the position of central shaft C, branch road 54 can be from the 3rd oil circuit 53 branches.
Certainly, can easily understand: though oil is concentrated and to be entered branch road 54 and be restricted, in order to realize improving the slip of thrust-bearing 30, make the oil that imports branch road 54 be sent to thrust-bearing 30 effectively, this is favourable.
Therefore, (shown another non-limiting example of the present invention) as shown in Figure 5, based on Bernoulli (Bernoulli) theorem: when path became narrower, flow rate of fluid increased, branch road 54 ' and by convergent.Specifically, if branch road 54 ' be convergent so that the outlet of its diameter on from the inlet on the 3rd oil circuit 53 to the external peripheral surface of main shaft portion 21 reduces gradually, when oil by branch road 54 ' outlet the time, the flow velocity of oil increases.This has realized the more steady supply of oil to thrust-bearing 30.
" tiltable is so that the position of its outlet is than the position height of its inlet alternatively, (to have shown another non-limiting example of the present invention) as shown in Figure 6, branch road 54.This structure makes the oil that upwards guides along the 3rd oil circuit 53 enter branch road 54 reposefully ", can directive flip-flop." the flow resistance of oil when flowing that this has reduced oily along branch road 54 effectively.
Can clearly see from foregoing description, the invention provides a kind of closed compressor, wherein: the oil that upwards guides along the oil circuit array that is formed on the running shaft place can directly be sent to the thrust-bearing of the axial load of supporting rotating shaft, thereby realizes the lubricated significant improvement of thrust-bearing.As a result, thrust-bearing can be operated the balance rotating that keeps running shaft with long-time continuous, causes the raising of the reliability of closed compressor.
Though illustrated and described embodiments of the invention, but those skilled in the art will recognize: under the situation that does not deviate from principle of the present invention and spirit (scope of the present invention is limited by claim and equivalent thereof), can change present embodiment.
Claims (10)
1. closed compressor comprises:
Seal container with the oil sump that limits in its bottom;
Be arranged in the seal container and comprise the framework of hollow portion;
Rotatably insert in the framework passing the running shaft of hollow portion, described running shaft has and is constructed to from the described oil sump oil circuit array of guiding oil upwards; With
Thrust-bearing, described thrust-bearing are inserted in the Bearing Installation groove that forms around the upper end of described hollow portion, and described thrust-bearing contacts with the running shaft rotation, supporting the axial load of described running shaft,
Wherein: described oil circuit array is constructed to described oil is fed to this thrust-bearing to small part.
2. closed compressor according to claim 1, wherein:
Described running shaft comprises:
Main shaft portion, described main shaft portion are passed this hollow portion with outstanding from hollow portion downwards,
Eccentric shaft portion, described eccentric shaft portion be formed on the main shaft portion and aim at prejudicially with main shaft portion and
The weight balancing part, described weight balancing part is between this eccentric shaft portion and this main shaft portion, owing to the imbalance that eccentric shaft portion causes rotatablely moves, both form the eccentric part of described running shaft described eccentric shaft portion and described weight balancing part with the compensation running shaft, and
Described oil circuit array comprises:
First oil circuit, described first oil circuit are formed near the underpart of the described main shaft portion the lower end of described hollow portion;
Second oil circuit, described second oil circuit are formed under the thrust-bearing, face the external peripheral surface place of the described main shaft portion of hollow portion, and are communicated with first oil circuit;
The 3rd oil circuit, described the 3rd oil circuit extend in the position of contiguous described thrust-bearing, in the upper end portion of described main shaft portion and described eccentric part and
Branch road, described branch road radially extends to the surface, outside of described main shaft from the 3rd oil circuit, being sent to thrust-bearing through at least the first quantity of the oil of first portion at least of the described oil of the 3rd oil circuit.
3. closed compressor according to claim 2, wherein:
Described branch road has the straight line hole shape,
The eccentricity of central axis of the 3rd oil circuit and described main shaft portion, and
Described curb extends with the direction that central shaft and the 3rd oil circuit straight line connected to one another with main shaft portion intersects.
4. closed compressor according to claim 3, wherein: described branch road tilts, so that it is higher than the outlet of this branch road at the external peripheral surface place that is positioned at main shaft portion to be positioned at the inlet of this branch road at the 3rd oil circuit place.
5. closed compressor according to claim 3, wherein: branch road be convergent or taper so that the outlet of the diameter of this branch road from the inlet of this branch road of being positioned at the 3rd oil circuit to this branch road at the external peripheral surface place that is positioned at main shaft portion reduces.
6. closed compressor according to claim 2, wherein:
Described branch road has the straight line hole shape,
The eccentricity of central axis of described the 3rd oil circuit and main shaft portion, and
Through piercing, this branch road forms from the surface, outside of main shaft portion.
7. closed compressor comprises:
Oil sump is positioned at seal container wherein;
Be arranged in the framework of seal container, described framework comprises hollow portion;
Be constructed to insert the running shaft in the framework;
Be constructed to from least one oil circuit of described oil sump guiding oil;
Be constructed to contact the thrust-bearing of running shaft with the load of supporting this running shaft,
Wherein: described at least one oil circuit is constructed to described oil is fed to thrust-bearing to small part.
8. closed compressor according to claim 7, wherein: described running shaft be constructed to pass described hollow portion to small part.
9. closed compressor according to claim 7, wherein: described at least one oil circuit comprises a plurality of oil circuits that form the oil circuit array.
10. closed compressor according to claim 7, wherein: described running shaft comprises:
Be constructed to pass the main shaft portion to small part of described hollow portion;
Eccentric shaft portion, described eccentric shaft portion are constructed to be positioned on the described main shaft portion, with described main shaft portion eccentric aim at and
The imbalance that weight balancing part, described weight balancing partly are constructed to compensate this running shaft rotatablely moves.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050068589A KR100679929B1 (en) | 2005-07-27 | 2005-07-27 | Hermetic type compressor |
| KR200568589 | 2005-07-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1904362A true CN1904362A (en) | 2007-01-31 |
Family
ID=37673688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101064203A Pending CN1904362A (en) | 2005-07-27 | 2006-07-13 | Hermetic compressor |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20070025864A1 (en) |
| JP (1) | JP2007032562A (en) |
| KR (1) | KR100679929B1 (en) |
| CN (1) | CN1904362A (en) |
| BR (1) | BRPI0602665A (en) |
| IT (1) | ITTO20060545A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953961A (en) * | 2012-11-29 | 2013-03-06 | 广州万宝集团压缩机有限公司 | Refrigerator compressor and lubricating-oil supplying device |
| CN104081051A (en) * | 2012-01-31 | 2014-10-01 | Ulvac机工株式会社 | Pump |
| CN104114864A (en) * | 2012-03-16 | 2014-10-22 | 松下电器产业株式会社 | Hermetically sealed compressor, and freezing device provided therewith |
| CN104169580A (en) * | 2012-04-12 | 2014-11-26 | 松下电器产业株式会社 | Hermetic compressor and refrigeration device comprising same |
| CN102272453B (en) * | 2009-01-07 | 2015-06-17 | Lg电子株式会社 | Reciprocating compressor and refrigerating apparatus having the same |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5353414B2 (en) * | 2009-04-27 | 2013-11-27 | パナソニック株式会社 | Hermetic compressor and refrigeration system |
| KR101698085B1 (en) * | 2010-05-06 | 2017-02-01 | 엘지전자 주식회사 | Hermetic compressor |
| BRPI1009161B8 (en) | 2010-12-06 | 2022-02-01 | Embraco Ind De Compressores E Solucoes Em Refrigeracao Ltda | Crankshaft for a reciprocating refrigeration compressor |
| JP5845401B2 (en) * | 2011-08-11 | 2016-01-20 | パナソニックＩｐマネジメント株式会社 | Hermetic compressor |
| US20140308141A1 (en) * | 2011-12-26 | 2014-10-16 | Panasonic Corporation | Sealed compressor and refrigerator including sealed compressor |
| JP2013194536A (en) * | 2012-03-16 | 2013-09-30 | Panasonic Corp | Sealed compressor and refrigerating apparatus |
| JP2015038326A (en) * | 2012-04-27 | 2015-02-26 | パナソニック株式会社 | Hermetic type compressor |
| JP5338967B1 (en) * | 2012-04-12 | 2013-11-13 | パナソニック株式会社 | Hermetic compressor and refrigeration system |
| JP5338966B1 (en) * | 2012-04-12 | 2013-11-13 | パナソニック株式会社 | Hermetic compressor and refrigerator-freezer |
| CN105518299B (en) * | 2013-09-03 | 2019-06-21 | 松下电器制冷装置新加坡 | Hermetic type compressor and the freezer or refrigerating plant for being mounted with the compressor |
| US10436104B2 (en) | 2014-05-23 | 2019-10-08 | Eaton Intelligent Power Limited | Supercharger |
| JP6938370B2 (en) * | 2015-03-25 | 2021-09-22 | パナソニック アプライアンシズ リフリジレーション デヴァイシズ シンガポール | Closed compressor and refrigeration system |
| KR102422698B1 (en) * | 2020-11-06 | 2022-07-20 | 엘지전자 주식회사 | Hermetic compressor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8810291U1 (en) * | 1988-08-13 | 1989-10-19 | Leybold Ag, 6450 Hanau, De | |
| KR19990030044U (en) * | 1997-12-29 | 1999-07-26 | 구자홍 | Oil supply structure of electric compressor |
| KR100278386B1 (en) * | 1998-09-08 | 2001-01-15 | 구자홍 | Leak-proof structure of the compressor |
| KR20010008682A (en) * | 1999-07-02 | 2001-02-05 | 배길성 | Structure for oil supply in friction part of closed type compressor |
| KR200224989Y1 (en) * | 2000-12-27 | 2001-05-15 | 엘지전자주식회사 | An oil supplying structure for hermetic compressor |
-
2005
- 2005-07-27 KR KR1020050068589A patent/KR100679929B1/en not_active IP Right Cessation
-
2006
- 2006-07-07 JP JP2006188335A patent/JP2007032562A/en not_active Withdrawn
- 2006-07-13 CN CNA2006101064203A patent/CN1904362A/en active Pending
- 2006-07-13 BR BRPI0602665-6A patent/BRPI0602665A/en not_active IP Right Cessation
- 2006-07-14 US US11/486,255 patent/US20070025864A1/en not_active Abandoned
- 2006-07-25 IT IT000545A patent/ITTO20060545A1/en unknown
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102272453B (en) * | 2009-01-07 | 2015-06-17 | Lg电子株式会社 | Reciprocating compressor and refrigerating apparatus having the same |
| CN104081051A (en) * | 2012-01-31 | 2014-10-01 | Ulvac机工株式会社 | Pump |
| CN104114864A (en) * | 2012-03-16 | 2014-10-22 | 松下电器产业株式会社 | Hermetically sealed compressor, and freezing device provided therewith |
| CN104169580A (en) * | 2012-04-12 | 2014-11-26 | 松下电器产业株式会社 | Hermetic compressor and refrigeration device comprising same |
| CN102953961A (en) * | 2012-11-29 | 2013-03-06 | 广州万宝集团压缩机有限公司 | Refrigerator compressor and lubricating-oil supplying device |
Also Published As
| Publication number | Publication date |
|---|---|
| US20070025864A1 (en) | 2007-02-01 |
| JP2007032562A (en) | 2007-02-08 |
| BRPI0602665A (en) | 2007-03-13 |
| KR100679929B1 (en) | 2007-02-07 |
| KR20070013904A (en) | 2007-01-31 |
| ITTO20060545A1 (en) | 2007-01-28 |
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