CN103644117B - Rotary translation piston compressor - Google Patents
Rotary translation piston compressor Download PDFInfo
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- CN103644117B CN103644117B CN201310738478.XA CN201310738478A CN103644117B CN 103644117 B CN103644117 B CN 103644117B CN 201310738478 A CN201310738478 A CN 201310738478A CN 103644117 B CN103644117 B CN 103644117B
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Abstract
The invention provides a kind of rotary translation piston compressor, belong to mechanical engineering technical field. It has solved the high problem of tensile strength of the required spring of existing rotary translation piston compressor. This rotary translation piston compressor comprises cylinder, bent axle and blade; On eccentric part, cover has piston, on outside piston side face, has planar portions; Between blade and cylinder, be provided with spring; Planar portions on blade and outside piston side face leans, and the end face that blade and piston lean is plane; Between eccentric part and piston, be connected with the friction-reducing structure that the plane on outside piston side face leans all the time by the end face that can make blade. Between the blade of this rotary translation piston compressor and piston, adopt planar friction and flat seal, and then increase sealing surface, improve sealing. Simultaneously, due to above-mentioned flat seal, therefore high pressure refrigerant is difficult to enter between blade and piston, and then the additional force of high pressure refrigerant to blade moving direction while reducing compressor operating.
Description
Technical field
The invention belongs to mechanical engineering technical field, the fluid that relates to a kind of rotary-piston becomesAppearance formula machinery, particularly a kind of rotary translation piston compressor.
Background technology
A kind of driven fluid that compressor of air conditioner is is high pressure by low pressure refrigerant gas liftMachinery. Compressor of air conditioner is the heart of refrigeration system. Rotary-piston type compressor of air conditioner quiltBe widely used in domestic air conditioning.
Pertinent literature about rolling piston compressor is more, as Chinese patent literature noteRolling piston compressor [the application number: 97114554.7 carrying; Publication number:CN1174297A]. In the background technology of the document, having recorded traditional rotary-piston type pressesContracting machine, as shown in Figure 12 and Figure 13, comprise have eccentric part 102 bent axle 101,Motor 103 that driving crank 101 rotates, cylinder 104, blade 105 and at cylinderThe piston 106 of eccentric rotary in 104. Blade 105 is at the effect lower blade of spring 111105 lean with piston 106, and blade 105 is round with the end face that piston 106 leansArc. Blade 105 moves back and forth in the blade groove of cylinder 104, and blade 105 is with aliveThe external peripheral surface sliding-contact of plug 106. Thereby blade 105 is the inside of cylinder 104Be divided into suction chamber 107 and discharge side 108. Because motor band dynamic crankshaft 101 rotates,Piston 106 rotates in cylinder 104, and refrigerant gas enters from suction inlet 109, soAfter be sent to outlet 110, simultaneously compressed. Conventionally rotary-piston type compressor of air conditionerBe applied in 1～3HP air-conditioning, also start application, its spring at the air-conditioning of 5HP at present111 elastic force rigidity general control is in 2～8Kg/ ㎜ left and right.
According to above-mentioned traditional structure, because the top of blade 105 has cylindrical surface,The external peripheral surface of piston 106 is also columniform, between blade 105 and piston 106Contact condition be equivalent to contacting between small column and big column. Therefore, contact conditionBe linear contact, its contact area is less, and load (i.e. contact on per unit areaStress) larger, the sliding-contact situation between blade 105 and piston 106 is becomeVery harsh. The rotary-piston type compressor of air conditioner of traditional structure, piston 106 cylindrical weekly formsFrictional resistance moment between face and blade 105 tops be greater than its inner circumferential surface and bent axle inclined to one sideFrictional resistance moment between heart portion 102, piston 106 can produce spin in the time of work. LivePlug 106 spin population depends on the ratio of its outside diameter and the diameter of bore of cylinder 104.
In above-mentioned traditional structure, compressor lubricated mainly by being arranged on bent axle mesoporeFlight at the pumping effect that when work produces, refrigerator oil is delivered between each bearing,And flow into cylinder chamber form oil film.
To produce the problem of sliding in order solving between above-mentioned piston 106 and blade 105, to havePeople has proposed solution technical scheme, as a kind of vertical rotary of Japanese patent laid-open publication gazette report recordFormula compressor (notification number: JP7259767A); On outside piston week, arrange one for bladeThe groove embedding has the hole that groove deepest part and oil supply gallery are connected on piston.Contacting between piston and blade becomes face contact, and the spin of piston also suffers restraints, fromAnd reach the condition of Stable sliding. Simultaneously again can by oil supply gallery and hole to piston withContact site fuel feeding between blade. According to described structure, this rotary compressor also existsFollowing defect: 1, in the groove from outside piston side face, depart from bullet for fear of bladeThe required elastic force of spring is larger, and the elastic force rigidity of this rotary compressor spring is estimated to controlMore than 20Kg/ ㎜. Produce thus series of problems: as blade to piston pressure increase,Need to supply to rub between oil lubrication, piston and eccentric part at the contact site between piston and bladeWiping power increases and compressor efficiency reduces etc. greatly. 2, connecing between piston and bladeTactile portion needs fuel feeding, has oil supply system, causes compressor arrangement complicated and zeroPart processing is more difficult, and cost is higher.
In order to overcome above-mentioned technical problem, applicant had once proposed a kind of rotary translation and had livedPlug compressor has also been applied for patent, is documented in Chinese patent literature, and application number is201310370147.5; Publication number is CN103410732A. This rotary translation piston is pressedAlthough contracting machine has reduced the required elastic force of spring, realize and reduce the required elastic force knot of springStructure diversity and further to reduce the required elastic force of spring be that those skilled in the art exertThe direction of power.
Summary of the invention
The object of the invention is to have the problems referred to above for existing technology, proposed oneRotary translation piston compressor, the technical problem to be solved in the present invention is how to reduce bulletThe elastic force that spring is required.
Object of the present invention can realize by following technical proposal: this rotary translation is livedPlug compressor, comprises the cylinder with plunger shaft and the bent axle with eccentric part, eccentric partBe positioned at plunger shaft; In described cylinder, be provided with blade; It is characterized in that described eccentric partUpper cover has piston, on outside piston side face, has planar portions; Between described blade and cylinderBe provided with spring; Planar portions on described blade and outside piston side face leans, described leafThe end face that sheet and piston lean is plane; Between described eccentric part and piston by makingThe end face of blade is connected with the friction-reducing structure that the plane on outside piston side face leans all the timeConnect.
The blade of this rotary translation piston compressor and piston adopt plane to lean, and carrySealing between high blade and piston reduces high pressure refrigerant to blade moving direction simultaneouslyAdditional force, reduce the reaction force to blade, and then can reduce the elastic force of spring;Thereby reduce the required torsion of crankshaft rotating, realize and reduce energy consumption.
In above-mentioned rotary translation piston compressor, on described outside piston side facePlane width is 1.2～1.5 times of corresponding width of blade. When compressor operating, pistonCan produce low-angle swing, the elastic force and the piston intensity that consider spring obtain afterwardsThe preferred value going out. In other words, above-mentioned numerical value is too small, causes vane end faces and pistonPlane magnitude of misalignment on outer circumference surface is excessive, and spring force reduces amplitude and cannot meet and establishMeter requirement. Above-mentioned numerical value is excessive, causes in the plane and piston on outside piston side faceBetween periphery minimum of a value become too small, and then cause piston intensity cannot meet design wantAsk.
In above-mentioned rotary translation piston compressor, the end face of described blade and pistonBetween plane on outer circumference surface, there is refrigerator oil. Refrigerator oil is coated in leaf in the time of assemblingOn the end face of sheet and/or outside piston side face, and then ensure can stablize between blade and pistonAnd slide neatly, and then make piston can produce swing.
In above-mentioned rotary translation piston compressor, described friction-reducing structure comprises employingThe antifriction cover that polytetrafluoroethylene (PTFE) is made, is gap between antifriction cover and eccentric part and pistonCoordinate. Coefficient of friction between polytetrafluoroethylene (PTFE) and employing metal is extremely low, bent axle and pistonBetween all adopt metal to make; Thus, between eccentric part and antifriction cover and piston and antifrictionBetween cover, all there is minimum frictional force, in other words, between eccentric part and piston, produce twoHeavy friction reducing effect, and then ensure that piston can not produce rotation.
In above-mentioned rotary translation piston compressor, the height of described antifriction cover is smallerIn the height of piston. Avoid between antifriction cover and cylinder head producing friction, avoid because ofAntifriction cover and cylinder head produce friction and cause energy consumption of electrical machinery to increase. As preferably, subtractLittle 0.1～the 0.3mm of height of aspect ratio piston of cover rubs.
In above-mentioned rotary translation piston compressor, the thickness of described antifriction cover is2～3mm。
In above-mentioned rotary translation piston compressor, on described eccentric part lateral surface, openThere is the first helicla flute, in described bent axle, be provided with the oil supply gallery being connected with the first helicla flute.
In above-mentioned rotary translation piston compressor, on described antifriction cover lateral surface, openHave the second helicla flute, described antifriction puts to have and is communicated with the second helicla flute and antifriction cover inner sideThe first intercommunicating pore of cavity.
In above-mentioned rotary translation piston compressor, on described piston medial surface, haveTriple helical groove, described antifriction puts the second intercommunicating pore that has several perforations.
In above-mentioned rotary translation piston compressor, described friction-reducing structure comprises and being plated inThe antifriction layer that eccentric part outer surface adopts polytetrafluoroethylene (PTFE) to make, between antifriction layer and pistonFor matched in clearance.
In above-mentioned rotary translation piston compressor, described friction-reducing structure comprises and being plated inThe antifriction layer that piston inner surface adopts polytetrafluoroethylene (PTFE) to make, between antifriction layer and eccentric partFor matched in clearance.
Between the blade of this rotary translation piston compressor and piston, adopt planar friction andFlat seal, and then increase sealing surface, improve sealing. Simultaneously because above-mentioned plane is closeEnvelope, therefore high pressure refrigerant is difficult to enter between blade and piston, and then reduces compressor workThe additional force of high pressure refrigerant to blade moving direction while work.
Between piston and eccentric part, be connected by friction-reducing structure, and then reduce significantlyCoefficient of friction between piston and eccentric part; Therefore this rotary translation piston compressorWhen operation, bent axle can not drive piston rotation.
In sum, the required elastic force of this rotary translation piston compressor medi-spring is onlyThe half of the required elastic force of compressor medi-spring as shown in Figure 12 and Figure 13 or less.
Brief description of the drawings
Fig. 1 is the sectional structure schematic diagram of the embodiment of the present invention one.
Fig. 2 is the sectional structure schematic diagram at the embodiment of the present invention one another visual angle.
Fig. 3 is the sectional structure schematic diagram of the embodiment of the present invention two.
Fig. 4 is the sectional structure schematic diagram at the embodiment of the present invention two another visual angles.
Fig. 5 is the main TV structure schematic diagram of the antifriction cover of the embodiment of the present invention three.
Fig. 6 is the main TV structure schematic diagram of the antifriction cover of the embodiment of the present invention four.
Fig. 7 is the sectional structure schematic diagram of the piston of the embodiment of the present invention four.
Fig. 8 is the sectional structure schematic diagram of the embodiment of the present invention five.
Fig. 9 is the main TV structure schematic diagram of the eccentric part of the embodiment of the present invention five.
Figure 10 is the sectional structure schematic diagram of the embodiment of the present invention six.
Figure 11 is the piston sectional structure schematic diagram of the embodiment of the present invention six.
Figure 12 is the structural representation of existing compressor.
Figure 13 is the cylinder position sectional structure schematic diagram of existing compressor.
In figure, 101, bent axle; 102, eccentric part; 103, motor; 104, cylinder;105, blade; 106, piston; 107, suction chamber; 108, discharge side; 109, suckMouthful; 110, outlet; 111, spring; 1, cylinder cap; 2, plunger shaft; 3, planar portions;4, antifriction cover; 5, the first helicla flute; 6, oil supply gallery; 7, the second helicla flute; 8,The first intercommunicating pore; 9, triple helical groove; 10, the second intercommunicating pore; 11, antifriction layer; 12,Cylinder body.
Detailed description of the invention
Below specific embodiments of the invention by reference to the accompanying drawings, to technical side of the present inventionCase is further described, but the present invention is not limited to these embodiment.
Embodiment mono-
As depicted in figs. 1 and 2, this rotary translation piston compressor comprise motor 103,Cylinder 104, bent axle 101, blade 105, piston 106 and spring 111.
Cylinder 104 comprises cylinder body 12 and cylinder cap 1, has a plunger shaft 2 in cylinder 104And blade groove.
Bent axle 101 has eccentric part 102, the plunger shaft 2 that bent axle 101 passes cylinder 104,And eccentric part 102 is positioned at plunger shaft 2. Motor 103 rotating shafts are connected with bent axle 101.
Blade 105 is embedded in blade groove, can slide along blade groove sidewall. Piston 106Be set on eccentric part 102. Spring 111 is positioned at blade groove, one end of spring 111Lean with the other end of blade 105, the other end of spring 111 and cylinder 104 offsetLean on, spring 111 leans blade 105 all the time with piston 106 lateral surfaces.
Blade 105 is plane with the end face that piston 106 leans, this plane and blade 105Side perpendicular. Piston 106 outer circumference surfaces are provided with planar portions 3; In other words, flatFace 3 is to form a rectangle plane by excision piston 106 periphery metals. SquareThe width of shape plane is 1.2 times to 1.5 times of blade 105 width.
In order to ensure to stablize and slip neatly between blade 105 and piston 106,In assembling process, on the end face of blade 105 and/or piston 106 outer circumference surfaces, coat coldFreeze machine oil; And then make plane on end face and piston 106 outer circumference surfaces of blade 105 itBetween there is refrigerator oil.
Elastic force rigidity at the spring 111 of this rotary translation piston compressor is only existingThe half of technology (as shown in Figure 12 and Figure 13) compressor medi-spring 111 elastic force rigidityOr less, ensure that bent axle 101 can not drive piston 106 to rotate while rotating, therefore partiallyEnd face by can make blade 105 between heart portion 102 and piston 106 all the time with piston 106The friction-reducing structure that plane on outer circumference surface leans is connected. Specifically, antifriction knotStructure comprises the antifriction cover 4 that adopts polytetrafluoroethylene (PTFE) to make, antifriction cover 4 and eccentric part 102And be matched in clearance between piston 106. As preferably, the gap of matched in clearance is0.006～0.010mm。
For the bearing capacity of convenient processing and guarantee antifriction cover 4, the thickness of antifriction cover 4 is excellentSelect 2～3mm. Rub for fear of producing between antifriction cover 4 and cylinder 104 cylinder caps 1 simultaneouslyWipe, the height of antifriction cover 4 is slightly less than the height of piston 106. As preferably, antifriction coverLittle 0.1～the 0.3mm of height of 4 aspect ratio piston 106. Employing polytetrafluoroethylene (PTFE) is madeAntifriction cover 4 connect pistons 106 and eccentric parts 102, ensured extremely low friction systemNumber, has increased again connection area; And then effectively improve this rotary translation piston compressionThe service life of machine and operation stability.
Embodiment bis-
The present embodiment is basic identical with structure and the principle of embodiment mono-, different placeBe: as shown in Figure 3 and Figure 4, in order further to reduce piston 106 and eccentric part 102Between coefficient of friction, on eccentric part 102 lateral surfaces, offer the first helicla flute 5,In bent axle 101, be provided with the oil supply gallery 6 being connected with the first helicla flute 5. This is rotaryTranslation piston compressor when work, lubricating oil by oil supply gallery 6 enter antifriction cover 4 withIn gap between eccentric part 102. The first helicla flute 5 is set more easily will lubricating oilAbove-mentioned gap-fill is full, avoids in high-speed cruising process, causes above-mentioned gap to producePetrol starvation. Fricative heat can also be taken away to feeding lubricating oil in above-mentioned gap,Avoid antifriction cover 4 to heat up.
Embodiment tri-
The present embodiment is basic identical with structure and the principle of embodiment bis-, different placeBe: as shown in Figure 5, this rotary translation piston compressor also comprises and is positioned at antifriction coverThe second helicla flute 7 on 4 lateral surfaces, has and is communicated with the second helicla flute 7 on antifriction cover 4Overlap the first intercommunicating pore 8 of 4 inner chambers with antifriction. Be that lubricating oil passes through the first intercommunicating pore 8,Enter in the gap between antifriction cover 4 and piston 106; The second helicla flute 7 makes lubricating oilThat more above-mentioned gap-fill is fuller.
Embodiment tetra-
The present embodiment is basic identical with structure and the principle of embodiment tri-, different placeBe: as shown in Figure 6 and Figure 7, on piston 106 medial surfaces, have triple helical groove 9,On antifriction cover 4, have the second intercommunicating pore 10 of several perforations.
Embodiment five
The present embodiment is basic identical with structure and the principle of embodiment mono-, different placeBe: as shown in Figure 8 and Figure 9, friction-reducing structure comprises and is attached to piston 106 inner surfacesThe antifriction layer 11 that adopts polytetrafluoroethylene (PTFE) to make, between antifriction layer 11 and eccentric part 102For matched in clearance. Antifriction layer 11 can adopt the mode of coating to form, and also can adopt polytetrafluoroThe thin cover that ethene is made and piston 106 tight fits. On eccentric part 102 lateral surfaces, offerThe first helicla flute 5, is provided with the fuel feeding being connected with the first helicla flute 5 logical in bent axle 101Road 6.
Embodiment six
The present embodiment is basic identical with structure and the principle of embodiment mono-, different placeBe: as shown in Figure 10 and Figure 11, friction-reducing structure comprises and being attached to outside eccentric part 102Surface adopts the antifriction layer 11 made of polytetrafluoroethylene (PTFE), antifriction layer 11 and piston 106 itBetween be matched in clearance. Antifriction layer 11 can adopt the mode of coating to form, and also can adopt poly-fourThe thin cover that PVF is made and eccentric part 102 tight fits. On piston 106 medial surfaces, haveTriple helical groove 9, is provided with oil supply gallery 6 in bent axle 101, oil supply gallery 6 runs through antifrictionLayer 11.
Claims (9)
1. a rotary translation piston compressor, comprises the have plunger shaft gas of (2)Cylinder (104) and there is the bent axle (101) of eccentric part (102), eccentric part (102) positionIn plunger shaft (2); In described cylinder (104), be provided with blade (105); Its featureBe, the upper cover of described eccentric part (102) has piston (106), piston (106) cylindricalOn side face, there is planar portions (3); Between described blade (105) and cylinder (104), establishThere is spring (111); Putting down on described blade (105) and piston (106) outer circumference surfaceFace (3) leans, the end face that described blade (105) and piston (106) leanFor plane; Between described eccentric part (102) and piston (106) by making blade (105)End face all the time with piston (106) outer circumference surface on subtracting of leaning of planar portions (3)The structure of rubbing is connected, the end face of described blade (105) and piston (106) outer circumference surfaceOn plane between there is refrigerator oil.
2. rotary translation piston compressor according to claim 1, its feature existsIn, the plane width on described piston (106) outer circumference surface is corresponding blade (105)1.2～1.5 times of width.
3. rotary translation piston compressor according to claim 1 and 2, its spyLevy and be, described friction-reducing structure comprises the antifriction cover (4) that adopts polytetrafluoroethylene (PTFE) to make,Between antifriction cover (4) and eccentric part (102) and piston (106), be matched in clearance.
4. rotary translation piston compressor according to claim 3, its feature existsIn, on described eccentric part (102) lateral surface, have the first helicla flute (5), described bent axle(101) in, be provided with the oil supply gallery (6) being connected with the first helicla flute (5).
5. rotary translation piston compressor according to claim 4, its feature existsIn, on described antifriction cover (4) lateral surface, have the second helicla flute (7), described antifriction cover(4) on, have and be communicated with the second helicla flute (7) and first of antifriction cover (4) inner chambersIntercommunicating pore (8).
6. rotary translation piston compressor according to claim 4, its feature existsIn, on described piston (106) medial surface, have triple helical groove (9), described antifriction cover(4) on, have second intercommunicating pore (10) of several perforations.
7. rotary translation piston compressor according to claim 1 and 2, its spyLevy and be, described friction-reducing structure comprises that being plated in piston (106) inner surface adopts polytetrafluoroethyl-neThe antifriction layer (11) that alkene layer is made, between antifriction layer (11) and eccentric part (102) isMatched in clearance.
8. rotary translation piston compressor according to claim 1 and 2, its spyLevy and be, described friction-reducing structure comprises that being plated in eccentric part (102) outer surface adopts polytetrafluoroThe antifriction layer (11) that ethene is made, between between antifriction layer (11) and piston (106) beingGap coordinates.
9. rotary translation piston compressor according to claim 8, its feature existsIn, on described piston (106) medial surface, have triple helical groove (9), bent axle (101)Inside be provided with oil supply gallery (6), oil supply gallery (6) runs through antifriction layer (11).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310738478.XA CN103644117B (en) | 2013-12-27 | 2013-12-27 | Rotary translation piston compressor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310738478.XA CN103644117B (en) | 2013-12-27 | 2013-12-27 | Rotary translation piston compressor |
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| CN103644117A CN103644117A (en) | 2014-03-19 |
| CN103644117B true CN103644117B (en) | 2016-05-11 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298796B (en) * | 2014-06-23 | 2017-11-21 | 珠海格力节能环保制冷技术研究中心有限公司 | The manufacture method of anti-attrition part in piston compressor and the piston compressor |
| CN105545741B (en) * | 2016-01-26 | 2018-11-09 | 珠海格力电器股份有限公司 | Swing rotor type compressor |
| CN106762638B (en) * | 2016-11-30 | 2018-11-06 | 浙江海洋大学 | A kind of translation piston compressor |
| CN108397384A (en) * | 2017-02-06 | 2018-08-14 | 上海海立电器有限公司 | A kind of compressor and air-conditioning system |
| CN108397385A (en) * | 2017-02-06 | 2018-08-14 | 上海海立电器有限公司 | A kind of compressor and refrigeration system |
| CN111664074B (en) * | 2019-03-05 | 2022-06-21 | 上海海立电器有限公司 | Piston for compressor, pump body assembly and compressor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR960002186U (en) * | 1994-06-02 | 1996-01-19 | Rotary compressor | |
| CN2388376Y (en) * | 1999-09-23 | 2000-07-19 | 付云树 | Oil path structure of rolling rotor compressor transmission shaft |
| JP2001132675A (en) * | 1999-11-04 | 2001-05-18 | Sanyo Electric Co Ltd | Two-stage compression type rotary compressor and two- stage compression refrigerating device |
| CN201310462Y (en) * | 2008-10-31 | 2009-09-16 | 陈君立 | Translational motion piston type rotary compressor |
| CN102767519A (en) * | 2011-05-06 | 2012-11-07 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN103410732B (en) * | 2013-08-22 | 2015-10-07 | 浙江百达精工股份有限公司 | Rotary-type translation piston compressor |
| CN203655635U (en) * | 2013-12-27 | 2014-06-18 | 浙江百达精工股份有限公司 | Rotary type translation piston compressor |
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