CN104776008A - Linear compressor and oil supply method thereof - Google Patents
Linear compressor and oil supply method thereof Download PDFInfo
- Publication number
- CN104776008A CN104776008A CN201410011632.8A CN201410011632A CN104776008A CN 104776008 A CN104776008 A CN 104776008A CN 201410011632 A CN201410011632 A CN 201410011632A CN 104776008 A CN104776008 A CN 104776008A
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- Prior art keywords
- hole
- bar structure
- sheath
- oil
- oil pipe
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000003921 oil Substances 0.000 claims abstract description 97
- 239000010687 lubricating oil Substances 0.000 claims abstract description 7
- 239000000314 lubricant Substances 0.000 claims description 34
- 238000003825 pressing Methods 0.000 claims description 25
- 238000005461 lubrication Methods 0.000 claims description 20
- 239000000446 fuel Substances 0.000 claims description 5
- 239000012535 impurity Substances 0.000 abstract description 9
- 239000000428 dust Substances 0.000 abstract description 4
- 230000001681 protective effect Effects 0.000 abstract 3
- 230000002035 prolonged effect Effects 0.000 abstract 2
- 230000009286 beneficial effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910000976 Electrical steel Inorganic materials 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
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- Bearings For Parts Moving Linearly (AREA)
Abstract
The invention discloses a linear compressor and an oil supply method thereof. The linear compressor comprises rod structures which are arranged between a rear baffle and an inner stator. The rod structures are sleeved with protective sleeves, and the protective sleeves are provided with oil guide through holes. The linear compressor can be used for leading lubricating oil into a positioning rod and the protective sleeve and fall onto a bearing through the oil guide through holes, so that a positioning shaft and the bearing are effectively lubricated, and the service life of parts is prolonged; the performance stability of the linear compressor is improved, and the service life of the linear compressor is prolonged; the mechanical efficiency of the linear compressor is improved; abrasive dust and impurities can be taken away, the friction face of a piston and the bearing is cleaned, the possibility that the impurities are accumulated and enter the piston is lowered, and the reliability of the linear compressor is improved.
Description
Technical field
The present invention relates to a kind of compressor, refer to a kind of Linearkompressor and fuel supply method thereof especially.
Background technique
Linearkompressor is drawn in cylinder by refrigerant gas, makes piston in cylinder, carry out linear reciprocating motion carry out compressed fluid, then discharge the fluid of compressive state by the linear driving force of linear electric machine.
As shown in Figure 1, this Linearkompressor is axisymmetric equipment, and it comprises linear electric motor, piston 7 ', cylinder 9 ' etc.Linear electric motor comprise inner stator 1 ', external stator 2 ', mover 4 ' and ring-shape field coil 3 '.Inner stator 1 ' and external stator 2 ' are formed by stacking by multiple silicon steel plate.Inner stator 1 ' and external stator 2 ' are fixed, inner stator 1 ' are wrapped the field coil 3 ' of annular, form magnetic pole in its end.Mover 4 ' is made up of permanent magnet.Mover 4 ' and mover skeleton 5 ' connect to form mover component.Mover skeleton 5 ' and piston 7 ' link together.Piston 7 ' right-hand member through after inner stator 1 ' inner chamber with cylinder 9 ' sliding contact, cylinder 9 ' is fixed on forward flange 10 '.This linear electric motor operating fields is made up of two-part, a part is the alternating magnetic field produced by field coil 3 ', a part is the stationary magnetic field produced by mover 4 ', under the interaction in two magnetic fields, produce axial electromagnetic actuation force, and then the piston 7 ' promoted in cylinder 9 ' does reciprocating linear motion.Because piston 7 ' is in the to-and-fro motion of cylinder 9 ' medium-high frequency, piston 7 ' and cylinder 9 ' are only when keeping the alignment of height, can reliable operation, once alignment is bad, piston 7 ' produces frictional force on cylinder 9 ' inwall, friction is produced between piston 7 ' and cylinder 9 ', the problems such as card cylinder time serious.For avoiding wearing and tearing between piston 7 ' and cylinder 9 ', card cylinder problem, as shown in Figure 1, positioning shaft 11 ' is connected with in the central position of piston 7 ' left end, bearing 12 ' is provided with between positioning shaft 11 ' and piston 7 ', positioning shaft 11 ' the other end is vertically connected at the central position of backboard 6 ', backboard 6 ' is vertically connected with multiple positioning rod 13 ', and the positioning rod 13 ' the other end is located by pressing plate 14 ' after stretching into the inner chamber of mover skeleton 5 '.Pressing plate 14 ' is against the left side of inner stator 1 ', and the upper cover of positioning rod 13 ' has sheath 15 '.The alignment of piston 7 ' and cylinder 9 ' is ensure that by above-mentioned design.But bring again positioning shaft 11 ' and bearing 12 ', between positioning rod 13 ' with sheath 15 ', phase mutual friction is serious, make these component deterioration very large, the power consumption of this Linearkompressor is caused to increase, in addition between positioning shaft 11 ' and bearing 12 ', rub between positioning rod 13 ' and sheath 15 ' and seriously improve the temperature of this Linearkompressor inside, these dry friction very easily produce wearing and tearing impurity and enter piston, in cylinder, this all reduces the Performance And Reliability of this Linearkompressor, the difficult point of this problem is: because the lubricating oil system between piston and cylinder is at right part, and positioning shaft 11 ', bearing 12 ', positioning rod 13 ' and sheath 15 ' are all at left part, from piston-cylinder lubricating oil system too away from, can not utilize.
Summary of the invention
The object of the present invention is to provide a kind of Linearkompressor and fuel supply method thereof, this Linearkompressor can effectively lubricating positioning shaft and bearing, extends the life-span of part, increases stability and the working life of Linearkompressor; Improve the mechanical efficiency of Linearkompressor; Can take away abrasive dust and impurity, the rubbing surface of cleaning piston and bearing, the Cumulate Sum reducing impurity enters the possibility of piston region, improves the reliability of Linearkompressor.
To achieve these goals, the invention provides a kind of Linearkompressor, comprising the bar structure be arranged between backboard and inner stator, described bar structure is arranged with sheath, described sheath is provided with Oil Guide through hole.
The inwall of described sheath is provided with and stores oily groove.
The gap of described inner stator is provided with oil pipe, and described oil pipe one end is communicated with lubrication system, the described oil pipe the other end with store oily groove and be communicated with.
Described jacket inner wall and/or bar structural outer surface are provided with the first concaveconvex structure, store oily groove described in being formed between adjacent first concaveconvex structure.
Described bar structure one end is positioned the attachment hole that pressing plate is arranged, and is provided with connectivity slot between the contacting part of described oil pipe and pressing plate and attachment hole.
Described bar structure and attachment hole are connected and fixed, and the outer side wall of described bar structure and/or the madial wall of attachment hole are provided with lubricant oil can flow into sheath lumen breach from oil pipe.
The cross section of described bar structure is less than the cross section of attachment hole, is connected and fixed between described bar structure and pressing plate by the second concaveconvex structure.
Described bar structure and attachment hole are connected and fixed, and described bar structure are provided with lubricating oil can flow into sheath lumen through hole from oil pipe end.
One end of described bar structure is arranged at the attachment hole on pressing plate, and described attachment hole connection stores oily groove and oil pipe.
Described lubrication system comprises and is arranged at the first through hole on forward flange and the second through hole, and is arranged between forward flange and cylinder, and the annular groove be communicated with the first through hole, the second through hole, one end of described oil pipe is communicated with the second through hole.
A kind of described Linearkompressor fuel supply method, wherein the method is comprised the lubricant oil of being derived by oil guide pipe and enters storing in oily groove between bar structure and sheath by the connectivity slot on pressing plate, and is dropped on positioning shaft and bearing by the Oil Guide through hole on sheath sidewall and realizes lubrication.
After adopting such scheme, Linearkompressor of the present invention by arranging bar structure between backboard and inner stator, make sheathed sheath in bar structure, sheath is arranged Oil Guide through hole, after such online design compressor start, lubricant oil between bar structure and sheath falls by Oil Guide through hole, and the spring of sheath outside can be flowed through, the lubricant oil fallen can be carried out high frequency impact by the spring of high frequency motion, the local space causing the lubricant oil fallen to drop on bearing place greatly forms mist of oil state, effectively lubricating positioning shaft and bearing, reduce the wearing and tearing at positioning shaft and bearing movable position, extend the life-span of part, increase stability and the working life of Linearkompressor, reduce friction factor and frictional heat, reduce energy loss and friction power loss, improve the mechanical efficiency of Linearkompressor, thus reduce energy consumption, can take away abrasive dust and impurity, the rubbing surface of cleaning piston and bearing, the Cumulate Sum reducing impurity enters the possibility of piston region, improves the reliability of Linearkompressor.
Further beneficial effect of the present invention is: store oily groove by arranging at jacket inner wall, like this can by between lubricant oil leading-in pole structure and sheath, lubricant oil is stored in store in oily groove stand-by, and ensures the lubrication between bar structure and sheath and cooling, extend the life-span of part.
Further beneficial effect of the present invention is: by arranging oil pipe in inner stator gap, and oil pipe one end is communicated with lubrication system, the other end with store oily groove and be communicated with, such oil pipe the lubricant oil in lubrication system can be adjusted to store in oily groove stand-by.
Further beneficial effect of the present invention is: by the attachment hole being positioned pressing plate is arranged in bar structure one end, between the contacting part of oil pipe and pressing plate and attachment hole, connectivity slot is set, such design makes lubricant oil can flow to sheath from oil pipe end, and to store lubricant oil stand-by for the oily groove that stores making between bar structure and sheath.
Further beneficial effect of the present invention is: by bar structure and attachment hole being connected and fixed, the outer side wall of bar structure and/or the madial wall of attachment hole arrange lubricant oil can flow into sheath lumen breach from oil pipe, make lubricant oil can flow to sheath from oil pipe end by breach, to store lubricant oil stand-by for the oily groove that stores making between bar structure and sheath, and ensure the lubrication between bar structure and sheath.
Further beneficial effect of the present invention is: by being designed to the cross section of bar structure to be less than the cross section of attachment hole, make to be connected and fixed by the second concaveconvex structure between bar structure and pressing plate, so both ensure that the connection of bar structure and attachment hole is located, can make again lubricant oil from oil pipe end through the slit flow between attachment hole and bar structure to sheath, lubricant oil is flow to store to store in oily groove stand-by, simultaneously lubrication bar structure and sheath.
Further beneficial effect of the present invention is: by bar structure one end being positioned at the attachment hole on pressing plate, attachment hole is connected and stores oily groove and oil pipe, make lubricant oil can be flowed directly to sheath from oil pipe end, to store lubricant oil stand-by for the oily groove that stores making between bar structure and sheath, and ensure the lubrication between bar structure and sheath.
Further beneficial effect of the present invention is: by arranging first and second through hole on forward flange, arrange annular groove between forward flange and cylinder, first and second through hole is communicated with annular groove, the lubricant oil of lubrication system is made to enter annular groove through the first through hole, and finally flow out from the second through hole, part lubricant oil drops down onto on piston under gravity, lubrication and cooling is carried out to piston, cylinder, finally drops down onto bottom compressor case; Another part lubricant oil enters in oil pipe, entered between positioning plate and sheath by oil pipe, and the multiple Oil Guide through holes on sheath drop on positioning shaft and bearing place, carry out lubrication and cooling to positioning shaft and bearing, finally drop down onto bottom compressor case, this piston-cylinder lubricating oil system structure is simple.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of existing Linearkompressor;
Fig. 2 is the shell inner cavity structural representation of Linearkompressor of the present invention;
Fig. 3 is the example structure schematic diagram between positioning rod of the present invention and sheath;
Fig. 4 is the linkage structure schematic diagram between oil pipe of the present invention, pressing plate and bar structure;
Fig. 5 is pressure plate structure schematic diagram of the present invention;
Fig. 6 is the A-A schematic cross-section of Fig. 5;
Fig. 7 is the oil pipe mounting structure schematic diagram of Linearkompressor of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described, can better understand the present invention and can be implemented, but illustrated embodiment is not as a limitation of the invention to make those skilled in the art.
As shown in Figures 2 and 3, be Linearkompressor of the present invention, comprise linear electric motor, piston 1, cylinder 2, forward flange 19 etc.Linear electric motor comprise stator and mover 5, and stator comprises fixed inner stator 3 and external stator 4.Inner stator 3 and external stator 4 are formed by stacking by multiple silicon steel plate.Mover 5 and mover skeleton 6 connect to form mover component.Mover skeleton 6 and piston 1 link together.The central position of piston 1 left end is connected with positioning shaft 8, is provided with bearing 9 between positioning shaft 8 and piston 1, and positioning shaft 8 the other end is connected to the central position of backboard 7, and backboard 7 is vertically connected with multiple bar structure 10.Shown in composition graphs 4, be positioned after bar structure 10 the other end stretches into the inner chamber of mover skeleton 6 on pressing plate 11, pressing plate 11 is against the left side of inner stator 3, and in bar structure 10, cover has sheath 12.The surface of internal cavity of sheath 12 is provided with screw thread 13, is formed and store oily groove 14 between adjacent thread 13.The cross section storing oily groove 14 is triangle, also can be semicircle or rectangle.Also irregular prismatic projection can be set at the outer surface of the surface of internal cavity of sheath 12 and/or bar structure 10, be formed between adjacent protrusion and store oily groove.Part on sheath 12 between backboard 7 and pressing plate 11 is socketed with spring 23.On sheath 12, the sidewall position of corresponding bearing 9 and positioning shaft 8 is provided with multiple Oil Guide through hole 15.Shown in composition graphs 7, in the silicon steel plate gap of inner stator 3, place oil pipe 16.Oil pipe 16 can be located fixing by inserting forward flange 19, also can be located fixing by the gap of inner stator 3.Oil pipe 16 is made up of metallic material or oil resistant macromolecular material is made.Pressing plate 11 is provided with attachment hole 17, the shaft axis of attachment hole 17 does not overlap with the shaft axis of oil pipe 16, is staggered.Connectivity slot 18 is provided with between the contacting part of oil pipe 16 and pressing plate 11 and attachment hole 17.Shown in composition graphs 5 and Fig. 6, attachment hole 17 inwall of bar structure 10 right-hand member outer surface and pressing plate 11 is respectively arranged with screw thread, the right-hand member of bar structure 10 is bolted in attachment hole 17, the madial wall of attachment hole 17 is provided with two breach 24, such setting both ensure that bar structure 10 was positioned on pressing plate 11, lubricant oil can be made to enter storing oily groove 14 between bar structure 10 and sheath 12 from the end of oil pipe 16 through connectivity slot 18, breach 24 simultaneously.Also the second concaveconvex structure outer side wall of bar structure 10 and the madial wall of attachment hole 17 being provided with the connection of mutual secure fit can be set to herein, and the cross section of bar structure 10 is less than the cross section of attachment hole 17, be connected and fixed by the second concaveconvex structure between bar structure 10 and attachment hole 17, and lubricant oil can from oil pipe 16 end through connectivity slot 18, slit flow between bar structure 10 and attachment hole 17 to storing oily groove 14 between bar structure 10 and sheath 12.Also can be set to bar structure 10 be herein connected and fixed with attachment hole 17, bar structure 10 be provided with through hole, makes lubricant oil enter storing oily groove 14 between bar structure 10 and sheath 12 from oil pipe 16 end through connectivity slot 18, through hole.The shaft axis that can also be set to oil pipe 16 herein overlaps with the shaft axis of attachment hole 17, and lubricating oil directly enters storing in oily groove 14 between bar structure 10 and sheath 12 by oil pipe 16 end through attachment hole 17.Oil pipe 16 right-hand member is communicated with pistion lubrication system.Pistion lubrication system comprises the first through hole 20, second through hole 21 being arranged at forward flange 19 outer surface and the annular groove 22 being arranged at forward flange 19 internal chamber wall.First through hole 20, second through hole 21 is all communicated with annular groove 22, the axes normal of the first through hole 20 and piston 1, the axis being parallel of the second through hole 21 and piston 1.The right-hand member of oil pipe 16 is inserted in the second through hole 21, and it is communicated with the second through hole 21.The diameter of oil pipe 16 is less than the diameter of the second through hole 21.
Shown in composition graphs 2, during Linearkompressor work of the present invention, by oil pump, the lubricant oil of outer casing bottom is pumped in pistion lubrication system, lubricant oil enters annular groove 22 by the first through hole 20, again through the second through hole 21, part lubricant oil flows to pressing plate 11 position through oil pipe 16, and by connectivity slot 18, breach 24 makes lubricant oil flow to store in oily groove 14 between bar structure 10 and sheath 12, when after Linearkompressor stop motion, a certain amount of lubricant oil can be saved in sheath 12, when Linearkompressor starts again, the lubricant oil stored in oily groove 14 can fall lubricating bearings 9 by the multiple Oil Guide through holes 15 on sheath 12 at once, and the spring 23 of sheath 12 outside can be flowed through, the lubricant oil fallen can be carried out high frequency impact by the spring 23 of high frequency motion, the local space causing the lubricant oil fallen to drop on bearing 9 place greatly forms mist of oil state, effectively lubricating positioning shaft 8 and bearing 9, reduce the wearing and tearing of positioning shaft 8 and bearing 9 motive position, extend the life-span of part, increase stability and the working life of this Linearkompressor, reduce friction factor and frictional heat, reduce energy loss and friction power loss, improve the mechanical efficiency of this Linearkompressor, thus reduce energy consumption, abrasive dust and impurity can be taken away, the rubbing surface of cleaning piston 1 and bearing 9, the Cumulate Sum reducing impurity enters the possibility at piston 1 position, improves the reliability of Linearkompressor, lubrication is carried out to positioning shaft 8 and bearing 9, finally drops down onto the outer casing bottom of Linearkompressor, another part lubricant oil is flowed out by the gap between oil pipe 16 and the second through hole 21, drops down onto on piston 1 under gravity, carries out lubrication and cooling, finally drop down onto the outer casing bottom of Linearkompressor to piston 1 and cylinder 2.
The above embodiment is only that protection scope of the present invention is not limited thereto in order to absolutely prove the preferred embodiment that the present invention lifts.The equivalent alternative or conversion that those skilled in the art do on basis of the present invention, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.
Claims (11)
1. a Linearkompressor, is characterized in that: comprise the bar structure be arranged between backboard and inner stator, described bar structure is arranged with sheath, described sheath is provided with Oil Guide through hole.
2. Linearkompressor according to claim 1, is characterized in that: the inwall of described sheath is provided with and stores oily groove.
3. Linearkompressor according to claim 1, is characterized in that: the gap of described inner stator is provided with oil pipe, and described oil pipe one end is communicated with lubrication system, the described oil pipe the other end with store oily groove and be communicated with.
4. Linearkompressor according to claim 3, is characterized in that: described jacket inner wall and/or bar structural outer surface are provided with the first concaveconvex structure, stores oily groove described in being formed between adjacent first concaveconvex structure.
5. Linearkompressor according to claim 3, is characterized in that: described bar structure one end is positioned the attachment hole that pressing plate is arranged, and is provided with connectivity slot between the contacting part of described oil pipe and pressing plate and attachment hole.
6. Linearkompressor according to claim 5, is characterized in that: described bar structure and attachment hole are connected and fixed, and the outer side wall of described bar structure and/or the madial wall of attachment hole are provided with lubricant oil can flow into sheath lumen breach from oil pipe.
7. Linearkompressor according to claim 5, is characterized in that: the cross section of described bar structure is less than the cross section of attachment hole, is connected and fixed between described bar structure and pressing plate by the second concaveconvex structure.
8. Linearkompressor according to claim 5, is characterized in that: described bar structure and attachment hole are connected and fixed, and described bar structure is provided with lubricating oil can flow into sheath lumen through hole from oil pipe end.
9. Linearkompressor according to claim 3, is characterized in that: one end of described bar structure is arranged at the attachment hole on pressing plate, and described attachment hole connection stores oily groove and oil pipe.
10. Linearkompressor according to claim 3, it is characterized in that: described lubrication system comprises and is arranged at the first through hole on forward flange and the second through hole, and be arranged between forward flange and cylinder, and the annular groove be communicated with the first through hole, the second through hole, one end of described oil pipe is communicated with the second through hole.
11. 1 kinds of Linearkompressor fuel supply methods as described in one of claim 1-10, it is characterized in that: the lubricant oil that the method comprises to be derived by oil guide pipe enters storing in oily groove between bar structure and sheath by the connectivity slot on pressing plate, and be dropped in realization lubrication on positioning shaft and bearing by the Oil Guide through hole on sheath sidewall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410011632.8A CN104776008B (en) | 2014-01-10 | 2014-01-10 | Linearkompressor and its fuel supply method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410011632.8A CN104776008B (en) | 2014-01-10 | 2014-01-10 | Linearkompressor and its fuel supply method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104776008A true CN104776008A (en) | 2015-07-15 |
| CN104776008B CN104776008B (en) | 2017-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410011632.8A Active CN104776008B (en) | 2014-01-10 | 2014-01-10 | Linearkompressor and its fuel supply method |
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| Country | Link |
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| CN (1) | CN104776008B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3813192A (en) * | 1972-12-07 | 1974-05-28 | Gen Electric | Centering spring arrangement for oscillatory compressors |
| CN1158386A (en) * | 1995-12-29 | 1997-09-03 | Lg电子株式会社 | Oil supply and discharge apparatus for compressor |
| US6666581B1 (en) * | 2000-08-22 | 2003-12-23 | David M. Boyer | Bearing for multi-spindle bar machine |
| DE19922511B4 (en) * | 1998-05-18 | 2004-07-08 | Lg Electronics Inc. | Oil circulation structure for a linear compressor |
| KR20050017250A (en) * | 2003-08-11 | 2005-02-22 | 엘지전자 주식회사 | Oil guide device for reciprocating compressor |
| CN1760545A (en) * | 2004-10-13 | 2006-04-19 | Lg电子株式会社 | Linear compressor |
| KR100746425B1 (en) * | 2006-08-04 | 2007-08-03 | 엘지전자 주식회사 | Oil supply unit of the linear compressor |
-
2014
- 2014-01-10 CN CN201410011632.8A patent/CN104776008B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3813192A (en) * | 1972-12-07 | 1974-05-28 | Gen Electric | Centering spring arrangement for oscillatory compressors |
| CN1158386A (en) * | 1995-12-29 | 1997-09-03 | Lg电子株式会社 | Oil supply and discharge apparatus for compressor |
| DE19922511B4 (en) * | 1998-05-18 | 2004-07-08 | Lg Electronics Inc. | Oil circulation structure for a linear compressor |
| US6666581B1 (en) * | 2000-08-22 | 2003-12-23 | David M. Boyer | Bearing for multi-spindle bar machine |
| KR20050017250A (en) * | 2003-08-11 | 2005-02-22 | 엘지전자 주식회사 | Oil guide device for reciprocating compressor |
| CN1760545A (en) * | 2004-10-13 | 2006-04-19 | Lg电子株式会社 | Linear compressor |
| KR100746425B1 (en) * | 2006-08-04 | 2007-08-03 | 엘지전자 주식회사 | Oil supply unit of the linear compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104776008B (en) | 2017-12-01 |
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