CN101876310B - Oil supply device for linear compressor - Google Patents
Oil supply device for linear compressor Download PDFInfo
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- CN101876310B CN101876310B CN2009100831057A CN200910083105A CN101876310B CN 101876310 B CN101876310 B CN 101876310B CN 2009100831057 A CN2009100831057 A CN 2009100831057A CN 200910083105 A CN200910083105 A CN 200910083105A CN 101876310 B CN101876310 B CN 101876310B
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Abstract
The invention relates to an oil supply device for a linear compressor. The oil supply device comprises first and second grooves which are buckled with each other and clamp an elastic film therebetween, and a first end cover covering on an outer surface of the bottom of the first groove; the first and second grooves and the elastic film enclose to form a first cavity and a second cavity respectively; an oil supply through hole and an oil absorption through groove are formed at the bottom of the first groove; the first end cover is provided with an oil supply blind groove and an oil absorption through hole; the oil absorption through hole is communicated with the oil absorption through groove, and an end surface where the oil absorption through hole is communicated with the oil absorption through groove is provided with a one-way oil absorption valve opened toward a direction close to the first cavity; the oil supply through hole is communicated with the oil supply blind groove, and an end surface where the oil supply through hole is communicated with the oil supply blind groove is provided with a one-way oil supply valve opened toward a direction away from the first cavity; the centre of the elastic film is connected with a moving component of the compressor or provided with a balance weight. When the linear compressor works, the elastic film reciprocates so as to change the volume of the cavity; if the volume of the cavity is larger, negative pressure is generated in the cavity, so that the oil absorption valve is opened and the oil enters the cavity; and if the volume of the cavity is smaller, the pressure in the cavity is increased, so that an oil discharge valve is opened and the oil enters a cylinder of the compressor.
Description
Technical field
The compressor that the invention belongs in fluid machinery and the refrigeration technology field is used oil supplying device, particularly a kind of oil supply device for linear compressor.
Background technique
The oil supplying device of compressor lubricant oil mainly is divided into two big types of splash lubrication and pressure lubrications because the difference of type has multiple mode.
The principle of splash lubrication be by on the connecting rod hit beam hanger with the lubricating oil splash in the crankcase to each rubbing surface; Or utilizing the annulus on the crankshaft journal shoulder that the lubricant oil in the crankcase is brought to the main journal surface, lubricant oil splashes to each rubbing surface under action of centrifugal force then.The splash lubrication fuel delivery is difficult to control, and is poor to the friction surface cooling effect, is applicable to light duty compressor.
The fuel system of pressure lubrication has two kinds of oil hydraulic pump fuel feeding and centrifugal fuel feeding.Oil hydraulic pump fuel system fuel delivery is big, is usually used in large and medium-sized refrigeration compressor; Centrifugal fuel system is the rotation by axle, makes lubricant oil under action of centrifugal force, be left to (or directly splashing to) each lubricated face, and this method is usually used in hermetic compressor.
Linearkompressor belongs to small-sized closed piston compressor; But because its motor is done straight reciprocating motion; Do not rotatablely move as oil pump power, the above-mentioned rotating shaft drive oil supplying device by rotating in the compressor can not be continued to use to traditional fuel system of each rubbing surface fuel feeding again.
Linearkompressor fuel feeding technology is in a circular cylindrical cavity, to load onto plunger shape oil piston like Korea S's lg electronics employing; Oil piston both sides are spacing by spring respectively; Utilize the vibration of compressor to drive oily piston and do the inertia motion; Utilize the principle of plunger pump, to each rubbing surface fuel feeding of each Linearkompressor.But; Because oily piston moves in the column cavity; Must there be certain clearance between oil piston and the cavity inner wall; The existence in gap can produce certain adverse effect to the pump of oil supplying device oil ability, when reducing the gap, need all carry out fine finishing to cavity inner wall and oily outer surface of piston as far as possible and reach certain degree of finish and guaranteed that oily piston can be reciprocating along with fuselage shaking well.
Summary of the invention
The object of the invention is to provide a kind of oil supply device for linear compressor, and this device can utilize the fuselage shaking of linear compressor or the motion of compressor electric motor moving element to drive.
Technological scheme of the present invention is following:
Oil supply device for linear compressor provided by the invention, it comprises:
Each other fasten and an elastic membrane 4 is installed between the two one first groove 3 and one second groove 5; With the first end cap A1 that is covered on said first groove, the 3 bottom land outer surfaces;
Said first groove 3 surrounds first cavity 31 with said elastic membrane 4; Said second groove 5 surrounds second cavity 51 with said elastic membrane 4;
The bottom land of said first groove 3 is provided with a fuel feeding through hole 11 and an oil suction groove 10; The said first end cap A1 is provided with a blind groove 7 of fuel feeding and the oil suction through hole 6 that an end opens wide;
Said oil suction through hole 6 communicates with said oil suction groove 10; On said oil suction through hole 6 and the end face that oil suction groove 10 is connected unidirectional oil sucting valve 8 is housed; Said unidirectional oil sucting valve 8 is opened to the direction near said first cavity 31;
Said fuel feeding through hole 11 is connected with the blind groove 7 of fuel feeding; On said oil supply hole 11 and the end face that oil supply 7 is connected unidirectional delivery valve 9 is housed; Said unidirectional delivery valve 9 is opened to the direction away from said first cavity 31;
The blind groove 7 of said fuel feeding is communicated with a fuel supply line 20; Said oil suction through hole 6 is communicated with a fuel sucking pipe 19;
Described elastic membrane 4 centers are connected with the moving element of compressor electric motor; Perhaps dispose balance weight body in said elastic membrane 4 centers, the quality m of said balance weight body is according to formula
Confirm that said k is the elasticity coefficient k of elastic membrane 4, said f is a compressor fuselage shaking frequency f.
Oil supply device for linear compressor provided by the invention also can further comprise the second end cap A2 that is covered on said second groove, the 5 bottom land outer surfaces;
The bottom land of said second groove 5 is provided with a fuel feeding through hole 111 and an oil suction groove 101; The said second end cap A2 is provided with a blind groove 71 of fuel feeding and the oil suction through hole 61 that an end opens wide;
Said oil suction through hole 61 communicates with said oil suction groove 101; On said oil suction through hole 61 and the end face that oil suction groove 101 is connected unidirectional oil sucting valve 81 is housed; Said unidirectional oil sucting valve 81 is opened to the direction near said second cavity 51;
Said fuel feeding through hole 111 is connected with the blind groove 71 of fuel feeding; On said oil supply hole 111 and the end face that the blind groove 71 of fuel feeding is connected unidirectional delivery valve 91 is housed; Said unidirectional delivery valve 91 is opened to the direction away from said second cavity 51;
The blind groove 71 of said fuel feeding is communicated with a fuel supply line 201; Said oil suction through hole 61 is communicated with a fuel sucking pipe 191.
The elastic membrane that described elastic membrane 4 is manufactured for fluoroplastic, rubber or composite and flexible material.
Described elastic membrane is by fluoroplastic, rubber or other composite and flexible material, and the to-and-fro motion of elastic membrane can make the interior spatial volume of oil pocket (first cavity 31 and second cavity 51) change and carry out oil suction or fuel feeding; Unidirectional oil sucting valve and unidirectional delivery valve have guaranteed unidirectional oil suction and oil feeding line; (first cavity 31 and second cavity 51) produces negative pressure and makes unidirectional oil sucting valve open when spatial volume becomes big in the oil pocket in the chamber, and oil gets in the chamber; Oil pocket interior (first cavity 31 and second cavity 51) is when spatial volume diminishes, and the increase of (first cavity 31 and second cavity 51) internal pressure makes unidirectional delivery valve open in the oil pocket, and oil is through in oil drainage hole and the oil duct entering compresser cylinder.
The advantage of oil supply device for linear compressor provided by the invention is following:
To-and-fro motion through elastic membrane makes that (first cavity 31 and second cavity 51) inner volume changes and carries out oil suction and fuel feeding in the oil pocket; Form in the oil pocket that seals (first cavity 31 and second cavity 51) through elastic membrane; During the elastic membrane motion; (first cavity 31 and second cavity 51) do not have air gap with the external world in the oil pocket, and supply capability is improved; Elastic membrane when motion, there is not friction with (first cavity 31 and second cavity 51) inwall in the oil pocket, vibration that can better utilization compressor fuselage is as fuel feeding power.
Description of drawings
Fig. 1 is Linearkompressor oil supplying device of the present invention (embodiment's) structure and a principle schematic;
Fig. 2 is Linearkompressor oil supplying device of the present invention (another embodiment's) structure and a principle schematic.
Embodiment
Embodiment 1
Fig. 1 is Linearkompressor oil supplying device of the present invention (embodiment's) structure and a principle schematic; Can know by figure, the oil supply device for linear compressor provided by the invention that present embodiment 1 provides, it comprises:
Each other fasten and an elastic membrane 4 is installed between the two one first groove 3 and one second groove 5; With the left end cap A1 that is covered on said first groove, the 3 bottom land outer surfaces;
Said first groove 3 surrounds first cavity 31 with said elastic membrane 4; Said second groove 5 surrounds second cavity 51 with said elastic membrane 4;
The bottom land of said first groove 3 is provided with a fuel feeding through hole 11 and an oil suction groove 10; Said first end cap 1 is provided with a blind groove 7 of fuel feeding and the oil suction through hole 6 that an end opens wide;
Said oil suction through hole 6 communicates with said oil suction groove 10; On said oil suction through hole 6 and the end face that oil suction groove 10 is connected unidirectional oil sucting valve 8 is housed; Said unidirectional oil sucting valve 8 is opened to the direction near said first cavity 31;
Said fuel feeding through hole 11 is connected with the blind groove 7 of fuel feeding; On said oil supply hole 11 and the end face that oil supply 7 is connected unidirectional delivery valve 9 is housed; Said unidirectional delivery valve 9 is opened to the direction away from said first cavity 31;
The blind groove 7 of said fuel feeding is communicated with a fuel supply line 20; Said oil suction through hole 6 is communicated with a fuel sucking pipe 19.
Described elastic membrane is by fluoroplastic, rubber or other composite and flexible material.
This embodiment can dispose balance weight body in elastic membrane 4 centers, the quality m of said balance weight body is according to formula
Confirm that said k is the elasticity coefficient k of elastic membrane 4, said f is a compressor fuselage shaking frequency f.
Oil supplying device is fixedly mounted on the Linearkompressor fuselage, and elastic membrane moving direction is consistent with compressor piston moving direction.
Working procedure during said elastic membrane 4 centers configuration balance weight body is: when the compressor fuselage vibrates left; The balance weight body at elastic membrane 4 centers moves right because of the inertial force effect drives elastic membrane, and the spatial volume in the cavity 31 of winning is increased, and forms negative pressure in first cavity 31; Unidirectional oil sucting valve 8 is opened; Unidirectional delivery valve 9 is closed, and the lubricant oil of compressor case bottom gets in first cavity 31 through oil-sucking hole 6, oil sucting valve 8 and oil suction groove 10 from fuel sucking pipe 19; When the compressor fuselage moves right; The balance weight body at elastic membrane 4 centers reduces the spatial volume in the cavity 31 of winning because of the inertial force effect drives elastic membrane to left movement, and the oil in first cavity 31 is under pressure; Unidirectional delivery valve 9 is opened; Unidirectional oil sucting valve 8 is closed, and lubricant oil is from oil supply hole 11, is got into each rubbing surface such as Linearkompressor cylinders again by fuel supply line 20 through the oil supply holes in unidirectional delivery valve 9, the oil supply 7; The double vibrations of compressor fuselage drives elastic membrane and carries out double vibrations, makes oil supplying device can carry out fuel feeding reposefully.
This embodiment also can be connected with the moving element of compressor electric motor in elastic membrane 4 centers, and elastic membrane moves reciprocatingly through the drive of motor movement parts; At this moment, elastic membrane 4 centers are connected with the moving element of compressor electric motor; Its working procedure is: when the compressor electric motor moving element moves right; Drive elastic membrane 4 through bindiny mechanism and move right, the spatial volume in the cavity 31 of winning is increased, form negative pressure in first cavity 31; Oil sucting valve 8 is opened; Delivery valve 9 is closed, and the lubricant oil of compressor case bottom gets in first cavity 31 through oil-sucking hole 6, oil sucting valve 8, oil suction groove 10 from fuel sucking pipe 19; The compressor electric motor moving element is when left movement; Drive elastic membrane 4 to left movement through bindiny mechanism, the spatial volume in the cavity 31 of winning is reduced, the oil in first cavity 31 is under pressure; Delivery valve 9 is opened; Oil sucting valve 8 is closed, and lubricant oil is got into each rubbing surface such as Linearkompressor cylinder again from fuel supply line 11 by fuel supply line 20 through the oil supply hole in delivery valve 9, the oil supply 7.The to-and-fro motion of compressor electric motor drives elastic membrane through bindiny mechanism and carries out double vibrations, makes oil supplying device can carry out fuel feeding reposefully.
Fig. 2 is Linearkompressor oil supplying device of the present invention (another embodiment's) structure and a principle schematic; Can know that by figure oil supply device for linear compressor provided by the invention except comprising embodiment's 1 described structure, also can further comprise the right end cap A2 that is covered on said second groove, the 5 bottom land outer surfaces;
The bottom land of said second groove 5 is provided with a fuel feeding through hole 111 and an oil suction groove 101; Said first end cap 1 is provided with a blind groove 71 of fuel feeding and the oil suction through hole 61 that an end opens wide;
Said oil suction through hole 61 communicates with said oil suction groove 101; On said oil suction through hole 61 and the end face that oil suction groove 101 is connected unidirectional oil sucting valve 81 is housed; Said unidirectional oil sucting valve 81 is opened to the direction near said second cavity 51;
Said fuel feeding through hole 111 is connected with the blind groove 71 of fuel feeding; On said oil supply hole 111 and the end face that oil supply 71 is connected unidirectional delivery valve 91 is housed; Said unidirectional delivery valve 91 is opened to the direction away from said second cavity 51;
The blind groove 71 of said fuel feeding is communicated with a fuel supply line 201; Said oil suction through hole 61 is communicated with a fuel sucking pipe (191).
Described elastic membrane is by fluoroplastic, rubber or other composite and flexible material.
This embodiment can dispose balance weight body in elastic membrane 4 centers, the quality m of said balance weight body is according to formula
Confirm that said k is the elasticity coefficient k of elastic membrane 4, said f is a compressor fuselage shaking frequency f.
Oil supplying device is fixedly mounted on the Linearkompressor fuselage, and elastic membrane moving direction is consistent with compressor piston moving direction.
Working procedure during said elastic membrane 4 centers configuration balance weight body is: when the compressor fuselage vibrated left, the balance weight body at elastic membrane 4 centers moved right because of the inertial force effect drives elastic membrane, and the spatial volume in the cavity 31 of winning is increased; Form negative pressure in first cavity 31, unidirectional oil sucting valve 8 is opened, and unidirectional delivery valve 9 is closed; The lubricant oil of compressor case bottom is from fuel sucking pipe 19; Get in first cavity 31 through oil-sucking hole 6, oil sucting valve 8 and oil suction groove 10, the spatial volume in second cavity 51 reduces simultaneously, and the oil in second cavity 51 is under pressure; Unidirectional delivery valve 91 is opened; Unidirectional oil sucting valve 81 is closed, and lubricant oil is from oil supply hole 111, converges laggard each rubbing surface such as linear compressor cylinder of going into by fuel supply line 201 and fuel supply line 20 again through the oil supply hole in unidirectional delivery valve 91, the oil supply 71; When the compressor fuselage moved right, the balance weight body at elastic membrane 4 centers reduced the spatial volume in the cavity 31 of winning because of the inertial force effect drives elastic membrane to left movement; Oil in first cavity 31 is under pressure, and unidirectional delivery valve 9 is opened, and unidirectional oil sucting valve 8 is closed; Lubricant oil is from oil supply hole 11; Converge laggard each rubbing surface such as linear compressor cylinder of going into by fuel supply line 20 and fuel supply line 201 again through the oil supply hole in unidirectional delivery valve 9, the oil supply 7, the spatial volumes in second cavity 51 increase simultaneously, form negative pressure in second cavity 51; Unidirectional oil sucting valve 81 is opened; Unidirectional delivery valve 91 is closed, and the lubricant oil of compressor case bottom gets in second cavity 51 through oil-sucking hole 61, oil sucting valve 81 and oil suction groove 101 from fuel sucking pipe 191.The double vibrations of compressor fuselage drives elastic membrane and carries out double vibrations, makes oil supplying device can carry out fuel feeding reposefully.
This embodiment also can be connected with the moving element of compressor electric motor in elastic membrane 4 centers, and elastic membrane moves reciprocatingly through the drive of motor movement parts.
Working procedure when said elastic membrane 4 centers are connected with the moving element of compressor electric motor is: when the compressor electric motor moving element moves right, drive elastic membrane 4 through bindiny mechanism and move right, the spatial volume in the cavity 31 of winning is increased; Form negative pressure in first cavity 31, unidirectional oil sucting valve 8 is opened, and unidirectional delivery valve 9 is closed; The lubricant oil of compressor case bottom is from fuel sucking pipe 19; Get in first cavity 31 through oil-sucking hole 6, oil sucting valve 8 and oil suction groove 10, the spatial volume in second cavity 51 reduces simultaneously, and the oil in second cavity 51 is under pressure; Unidirectional delivery valve 91 is opened; Unidirectional oil sucting valve 81 is closed, and lubricant oil is from oil supply hole 111, converges laggard each rubbing surface such as linear compressor cylinder of going into by fuel supply line 201 and fuel supply line 20 again through the oil supply hole in unidirectional delivery valve 91, the oil supply 71; When compressor electric motor moving element during to left movement, drive elastic membrane 4 to left movement through bindiny mechanism, the spatial volumes in the cavity 31 of winning are reduced; Oil in first cavity 31 is under pressure, and unidirectional delivery valve 9 is opened, and unidirectional oil sucting valve 8 is closed; Lubricant oil is from oil supply hole 11; Converge laggard each rubbing surface such as linear compressor cylinder of going into by fuel supply line 20 and fuel supply line 201 again through the oil supply hole in unidirectional delivery valve 9, the oil supply 7, the spatial volumes in second cavity 51 increase simultaneously, form negative pressure in second cavity 51; Unidirectional oil sucting valve 81 is opened; Unidirectional delivery valve 91 is closed, and the lubricant oil of compressor case bottom gets in second cavity 51 through oil-sucking hole 61, oil sucting valve 81 and oil suction groove 101 from fuel sucking pipe 191.The double vibrations of compressor fuselage drives elastic membrane and carries out double vibrations, makes oil supplying device can carry out fuel feeding reposefully.
Claims (3)
1. an oil supply device for linear compressor is characterized in that, comprising:
Each other fasten and an elastic membrane (4) is installed between the two one first groove (3) and one second groove (5); With first end cap (A1) that is covered on said first groove (3) the bottom land outer surface;
Said first groove (3) surrounds first cavity (31) with said elastic membrane (4); Said second groove (5) surrounds second cavity (51) with said elastic membrane (4);
The bottom land of said first groove (3) is provided with a fuel feeding through hole (11) and an oil suction groove (10); Said first end cap (A1) is provided with a blind groove of fuel feeding (7) and the oil suction through hole (6) that an end opens wide;
Said oil suction through hole (6) communicates with said oil suction groove (10); On said oil suction through hole (6) and the end face that oil suction groove (10) is connected unidirectional oil sucting valve (8) is housed; Said unidirectional oil sucting valve (8) is opened to the direction near said first cavity (31);
Said fuel feeding through hole (11) is connected with the blind groove of fuel feeding (7); On said fuel feeding through hole (11) and the end face that the blind groove of fuel feeding (7) is connected unidirectional delivery valve (9) is housed; Said unidirectional delivery valve (9) is opened to the direction away from said first cavity (31);
The blind groove of said fuel feeding (7) is communicated with a fuel supply line (20); Said oil suction through hole (6) is communicated with a fuel sucking pipe (19);
Described elastic membrane (4) center is connected with the moving element of compressor electric motor; Perhaps dispose balance weight body in said elastic membrane (4) center; The quality m of said balance weight body confirms according to formula
; Said k is the elasticity coefficient k of elastic membrane (4), and said f is a compressor fuselage shaking frequency f.
2. by the said oil supply device for linear compressor of claim 1, it is characterized in that, also comprise second end cap (A2) that is covered on said second groove (5) the bottom land outer surface;
The bottom land of said second groove (5) is provided with one second fuel feeding through hole (111) and one second oil suction groove (101); Said second end cap (A2) is provided with blind groove of second fuel feeding (71) and the one second oil suction through hole (61) that an end opens wide;
The said second oil suction through hole (61) communicates with the said second oil suction groove (101); On the said second oil suction through hole (61) and the end face that the second oil suction groove (101) is connected the second unidirectional oil sucting valve (81) is housed; The said second unidirectional oil sucting valve (81) is opened to the direction near said second cavity (51);
The said second fuel feeding through hole (111) is connected with the blind groove of second fuel feeding (71); On the said second fuel feeding through hole (111) and the end face that the blind groove of second fuel feeding (71) is connected the second unidirectional delivery valve (91) is housed; The said second unidirectional delivery valve (91) is opened to the direction away from said second cavity (51);
The blind groove of said second fuel feeding (71) is communicated with one second fuel supply line (201); The said second oil suction through hole (61) is communicated with one second fuel sucking pipe (191).
3. by claim 1 or 2 said oil supply device for linear compressor, it is characterized in that the elastic membrane that described elastic membrane (4) is manufactured for the composite and flexible material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100831057A CN101876310B (en) | 2009-04-30 | 2009-04-30 | Oil supply device for linear compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100831057A CN101876310B (en) | 2009-04-30 | 2009-04-30 | Oil supply device for linear compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101876310A CN101876310A (en) | 2010-11-03 |
| CN101876310B true CN101876310B (en) | 2012-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100831057A Expired - Fee Related CN101876310B (en) | 2009-04-30 | 2009-04-30 | Oil supply device for linear compressor |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2786646B1 (en) * | 2011-11-30 | 2017-01-25 | EBM-Papst Mulfingen GmbH&CO. KG | Housing for accommodating an electronic circuit |
| CN105986990B (en) * | 2015-03-04 | 2020-02-11 | 青岛海尔智能技术研发有限公司 | Linear compressor and lubricating oil supply method |
| CN109282526A (en) * | 2018-09-26 | 2019-01-29 | 青岛海信日立空调系统有限公司 | Compressor oil-supplying device and method, air-conditioning |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6409484B1 (en) * | 1998-12-28 | 2002-06-25 | Lg Electronics Inc. | Oil supply unit of linear compressor |
| CN1782381A (en) * | 2004-11-29 | 2006-06-07 | 乐金电子(天津)电器有限公司 | Oil supply device for reciprocating compressor |
| CN101205891A (en) * | 2006-12-20 | 2008-06-25 | 泰州乐金电子冷机有限公司 | Oil supplying device of linear compressor |
| CN201461330U (en) * | 2009-04-30 | 2010-05-12 | 中国科学院理化技术研究所 | Oil supply device for linear compressor |
-
2009
- 2009-04-30 CN CN2009100831057A patent/CN101876310B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6409484B1 (en) * | 1998-12-28 | 2002-06-25 | Lg Electronics Inc. | Oil supply unit of linear compressor |
| CN1782381A (en) * | 2004-11-29 | 2006-06-07 | 乐金电子(天津)电器有限公司 | Oil supply device for reciprocating compressor |
| CN101205891A (en) * | 2006-12-20 | 2008-06-25 | 泰州乐金电子冷机有限公司 | Oil supplying device of linear compressor |
| CN201461330U (en) * | 2009-04-30 | 2010-05-12 | 中国科学院理化技术研究所 | Oil supply device for linear compressor |
Non-Patent Citations (1)
| Title |
|---|
| US 6,409,484 B1,2002.06.25, |
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| CN101876310A (en) | 2010-11-03 |
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Granted publication date: 20120613 |