CN106988992B - The compression mechanism and reciprocating compressor of reciprocating compressor - Google Patents
The compression mechanism and reciprocating compressor of reciprocating compressor Download PDFInfo
- Publication number
- CN106988992B CN106988992B CN201710392432.5A CN201710392432A CN106988992B CN 106988992 B CN106988992 B CN 106988992B CN 201710392432 A CN201710392432 A CN 201710392432A CN 106988992 B CN106988992 B CN 106988992B
- Authority
- CN
- China
- Prior art keywords
- crankshaft
- eccentric
- connecting rod
- compression mechanism
- piston
- 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.)
- Active
Links
Classifications
-
- 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
- F04B39/0005—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 adaptations of pistons
-
- 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
- F04B39/0005—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 adaptations of pistons
- F04B39/0022—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 adaptations of pistons piston rods
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
- F04B49/123—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element
- F04B49/125—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element by changing the eccentricity of the actuation means, e.g. cams or cranks, relative to the driving means, e.g. driving shafts
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/16—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by adjusting the capacity of dead spaces of working chambers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention discloses a kind of compression mechanism of reciprocating compressor and there is its reciprocating compressor, the compression mechanism includes crankshaft, piston, connecting rod, crankshaft eccentric set, crankshaft closing component structure, connecting rod eccentric bushing and connecting rod locking mechanism.Crankshaft has eccentric part, and the both ends of connecting rod are respectively crankshaft interconnecting piece and Piston connecting portion, and crankshaft interconnecting piece housing is on eccentric part.Piston is connected with Piston connecting portion, and crankshaft eccentric set is set between crankshaft interconnecting piece and eccentric part, has eccentricity between the internal perisporium and periphery wall of crankshaft eccentric set.Crankshaft closing component structure is located between crankshaft eccentric set and crankshaft.Compression mechanism according to an embodiment of the present invention has double refrigerating capacitys, and compression efficiency with higher, so that compressor chamber clearance volume can guarantee same zone of reasonableness value in positive and negative rotation.
Description
Technical field
The present invention relates to the compression mechanisms and reciprocating compression of compressor field more particularly to a kind of reciprocating compressor
Machine.
Background technique
It has been difficult to meet energy with national refrigerator efficiency upgrading, reciprocating constant speed compressor as low-carbon and energy conservation are deepened constantly
Consumption requires, and frequency-changeable compressor becomes the development trend of reciprocating compressor.The working principle of frequency-changeable compressor is to pass through the slow-speed of revolution
Compressor refrigerating capacity is adjusted, when refrigerator cold-storage and freezer temperature reach the temperature of setting, compressor is at the low rotational speed run,
Set temperature is maintained, realizes refrigerator energy-saving.But frequency-changeable compressor can bring compressor cost increase, cause refrigerator client
Puzzlement.It not will increase excessive premise based on cost to imagine, the prior art proposes positive displacement compressor, pressure is realized by transfiguration
The variation of contracting machine cooling capacity.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention proposes that one kind is past
The refrigerating capacity of the compression mechanism of twin compressor, the compression mechanism can be changed by the variation of the rotation direction of crankshaft.
The present invention, which also resides in, proposes a kind of reciprocating compressor with compression mechanism.
The compression mechanism of reciprocating compressor according to an embodiment of the present invention, comprising: crankshaft, the crankshaft have bias
Portion；Connecting rod, the both ends of the connecting rod are respectively crankshaft interconnecting piece and Piston connecting portion, and the crankshaft interconnecting piece housing is described inclined
In center portion；Piston, the piston are connected with the Piston connecting portion；Crankshaft eccentric set, the crankshaft eccentric set are set in described
Between crankshaft interconnecting piece and the eccentric part, there is eccentricity between the internal perisporium and periphery wall of the crankshaft eccentric set；Crankshaft
Closing component structure, the crankshaft closing component structure is located between the crankshaft eccentric set and the crankshaft, when the crank rotation direction
The crankshaft eccentric set can be locked at the Difference angles of the crankshaft by the crankshaft closing component structure when different, so that institute
The stroke for stating piston is different；Connecting rod eccentric bushing, the connecting rod eccentric bushing are set in the crankshaft eccentric set and connect with the crankshaft
Between portion, there is eccentricity between the internal perisporium and periphery wall of the connecting rod eccentric bushing；Connecting rod closing component structure, the connecting rod are sealed
Structure is located between the connecting rod eccentric bushing and the connecting rod, the connecting rod closing component structure when the crank rotation direction difference
The connecting rod eccentric bushing can be locked at the Difference angles of the connecting rod, so that the center of the connecting rod is away from difference.
Compression mechanism according to an embodiment of the present invention is covered with crankshaft closing component structure by setting crankshaft eccentric, it can be achieved that song
Crankshaft eccentric set can be locked at the Difference angles of crankshaft by crankshaft closing component structure when rotational axis direction difference, keep crankshaft inclined
Heart set is superimposed upon the eccentricity result difference on the eccentric part of crankshaft, thus keep the stroke of piston different, and then compression mechanism
Decrement changes, to achieve the purpose that realize that compression mechanism has double refrigerating capacitys.In addition, passing through setting connecting rod eccentric bushing
With connecting rod closing component structure, it can be achieved that link lock closes structure and connecting rod eccentric bushing can be locked at connecting rod when the difference of crank rotation direction
At Difference angles, make the center of connecting rod away from difference, thus keep the top dead centre of piston different with the position of lower dead center, Jin Erbao
The compressor chamber clearance volume of compression mechanism has been demonstrate,proved within zone of reasonableness, has guaranteed that compression mechanism is equal when crankshaft turns to different
Compression efficiency with higher, to reach energy-saving effect.
In some embodiments, the internal perisporium of the crankshaft eccentric set is equipped with the first notch, the crankshaft closing component structure
Including being connected and cooperating the in first notch first eccentric pivot pin with the eccentric part, in two kinds of rotation sides of the crankshaft
The described first eccentric pivot pin can be only against in the two lateral walls of first notch in the circumferential respectively upwards.
Specifically, the top of crankshaft eccentric set is set there are two first boss, in the circumferential described two first boss
Between part constitute first notch.
Specifically, the crankshaft is equipped with the first eccentric pin hole, and the one end fits of the described first eccentric pivot pin are described
In first eccentric pin hole.
In some embodiments, the internal perisporium of the crankshaft interconnecting piece is equipped with the second notch, the connecting rod closing component structure
Including being connected and cooperating the in second notch second eccentric pivot pin with the connecting rod eccentric bushing, turn at two kinds of the crankshaft
The described second eccentric pivot pin can be only against in the two lateral walls of second notch in the circumferential respectively on dynamic direction.
Specifically, it is set at the top of the crankshaft interconnecting piece there are two second boss, in the circumferential described two second boss
Between part constitute second notch.
Specifically, the connecting rod eccentric bushing is equipped with the second eccentric pin hole, the one end fits of the described second eccentric pivot pin
In the described second eccentric pin hole.
In some embodiments, the compression mechanism of reciprocating compressor further includes bearing, and the bearing support is in the company
Between bar eccentric bushing and the crankshaft interconnecting piece.
Specifically, the bearing includes: retainer, and the retainer is formed as tubular, and the retainer is folded in institute
It states between connecting rod eccentric bushing and the crankshaft interconnecting piece, the tube wall of the retainer is equipped with retaining hole；Ball, the ball can
It is rollably located in the retaining hole.
Specifically, the bearing further includes partition, and the partition is formed as from the bottom of the retainer radially inward
The annular slab of extension, the partition are located between the connecting rod eccentric bushing and the bent shaft balancing portion.
Reciprocating compressor according to an embodiment of the present invention, the compression mechanism including the reciprocating compressor.
Reciprocating compressor according to an embodiment of the present invention changes the row of compressor piston by way of crankshaft positive and negative rotation
The effect of two kinds of volume refrigerating capacity compressors of compressor may be implemented in journey.By setting connecting rod center away from regulating mechanism, ensure that
The compressor chamber clearance volume of compression mechanism is within zone of reasonableness.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the overall structure of the explosion figure of compression mechanism according to an embodiment of the present invention.
Fig. 2 is crankshaft component explosive view according to an embodiment of the present invention.
Fig. 3 is linkage component explosive view according to an embodiment of the present invention.
The schematic diagram when crankshaft rotating forward piston is in top dead centre of Fig. 4 embodiment of the present invention.
Fig. 5 Fig. 4 circle shows the enlarged drawing at A.
The schematic diagram when crankshaft reversion piston is in top dead centre of Fig. 6 embodiment of the present invention.
Fig. 7 Fig. 6 circle shows the enlarged drawing at B.
Appended drawing reference:
Compression mechanism 100,
Crankcase 1, crankshaft axis hole 11, piston cylinder holes 12,
Crankshaft 2, eccentric part 21, balance portion 23, the first fixation hole 22, the first pilot hole 25,
Crankshaft eccentric covers the 3, first notch 31, the first sealed face 311, the second sealed face 312, first boss 32, axle sleeve oil
The eccentric pivot pin 34 in hole 33, first, the first jack 341,
Connecting rod eccentric bushing 4, main pipe 41, fixed station 42, second eccentric pivot pin 43, the second jack 431, the second fixation hole
44, the second pilot hole 45,
Bearing 5, retainer 51, ball 52, partition 53,
The sealed face 6111 of connecting rod 6, crankshaft interconnecting piece 61, the second notch 611, third, the 4th sealed face 6112, second boss
612, Piston connecting portion 62,
Piston 7, piston pin 71, third jack 711,
First resilient key 91, the second resilient key 92, third resilient key 93.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, " first " is defined, the feature of " second " can be expressed or hidden
It include one or more of the features containing ground.
Compression mechanism 100 according to an embodiment of the present invention is described below with reference to Fig. 1-Fig. 7.
As shown in Figure 1, compression mechanism 100 according to an embodiment of the present invention, including crankshaft 2, connecting rod 6, piston 7, crankshaft are inclined
Heart set 3, crankshaft closing component structure, connecting rod eccentric bushing 4 and connecting rod closing component structure.
As shown in Figure 1-Figure 3, crankshaft 2 has eccentric part 21, and the both ends of connecting rod 6 are respectively that crankshaft interconnecting piece 61 and piston connect
Socket part 62, on eccentric part 21, piston 7 is connected 61 housing of crankshaft interconnecting piece with Piston connecting portion 62.
Crankshaft eccentric set 3 is set between crankshaft interconnecting piece 61 and eccentric part 21, the internal perisporium of crankshaft eccentric set 3 and periphery
There is eccentricity between wall.Crankshaft closing component structure is located between crankshaft eccentric set 3 and crankshaft 2, when 2 rotation direction difference of crankshaft
Crankshaft eccentric can be covered 3 and is locked at the Difference angles of crankshaft 2 by crankshaft closing component structure, so that the stroke of piston 7 is different.
As shown in Figure 1, Figure 3, connecting rod eccentric bushing 4 is set between crankshaft eccentric set 3 and crankshaft interconnecting piece 61, and connecting rod is eccentric
There is eccentricity between the internal perisporium and periphery wall of set 4.Connecting rod closing component structure is located between connecting rod eccentric bushing 4 and connecting rod 6, works as song
Link lock is closed structure and can be locked at connecting rod eccentric bushing 4 at the Difference angles of connecting rod 6 when 2 rotation direction difference of axis, so that
The center of connecting rod 6 is away from difference.
Wherein, it is clearance fit between crankshaft eccentric set 3 and crankshaft interconnecting piece 61, is locked when crankshaft 2 rotates, and in crankshaft
When conjunction structure does not lock together crankshaft eccentric set 3 and crankshaft 2, crankshaft eccentric set 3 can be around bias under the action of frictional force
Portion 21 rotates.
It is clearance fit between connecting rod eccentric bushing 4 and eccentric part 21, when crankshaft eccentric is covered 3 and crankshaft by crankshaft closing component structure
2 lock together, and when 6 locking mechanism of connecting rod does not lock together connecting rod eccentric bushing 4 and connecting rod 6, work of the connecting rod eccentric bushing 4 in frictional force
It can be rotated around eccentric part 21 under.
When crankshaft 2 is rotated in a first direction, crankshaft eccentric set 3 is after the first crankshaft set angle of rotation of crankshaft 2, touching
Crankshaft closing component structure is sent out, to be locked at the first crank angle position of crankshaft 2.Crankshaft eccentric set 3 can be locked together at this time
On crankshaft 2, so that crankshaft eccentric set 3 is rotated synchronously with crankshaft 2.Later, crankshaft 2 continues to rotate, and connecting rod eccentric bushing 4 is with respect to connecting rod
After 6 rotation first connecting rod set angles, connecting rod closing component structure is triggered, to be locked in the first connecting rod angle position of connecting rod 6
Place.The rotation of crankshaft 2 drives connecting rod 6 as a result, and connecting rod 6 drives piston 7 to move up and down, and stroke is first stroke.
When crankshaft 2 rotates in a second direction, crankshaft eccentric set 3 is after the second crankshaft set angle of rotation of crankshaft 2, touching
Crankshaft closing component structure is sent out, to be locked at the second crank angle position of crankshaft 2.Crankshaft eccentric set 3 is sealed at this time
On crankshaft 2, crankshaft eccentric set 3 is rotated synchronously with crankshaft 2.Later, crankshaft 2 continues to rotate, and connecting rod eccentric bushing 4 is with respect to connecting rod 6
After rotating second connecting rod set angle, connecting rod closing component structure is triggered, to be locked in the second connecting rod angle position of connecting rod 6
Place.The rotation of crankshaft 2 drives connecting rod 6 as a result, and connecting rod 6 drives piston 7 to move up and down, and stroke is second stroke.
It should be noted that the stroke of piston 7 by crankshaft 2 eccentric part 21 eccentricity and crankshaft eccentric set 3 bias
Measure what stack result determined.Therefore, if crankshaft eccentric is covered 3 the first sealed crank angle positions, the by crankshaft closing component structure
Two crank angle positions are different, being superimposed between the eccentricity and the eccentricity of crankshaft eccentric set 3 of the eccentric part 21 of above-mentioned crankshaft 2
As a result can be different, then the stroke of piston 7 is not also identical.
When the timing of stroke one of piston 7, the top dead centre of piston 7, bottom dead center position by the center of connecting rod 6 away from determining, therefore,
If connecting rod closing component structure is different by the sealed first connecting rod angle position of connecting rod eccentric bushing 4, second connecting rod angle position, connecting rod
6 center is different away from meeting, then the top dead centre of piston 7, bottom dead center position be not also identical.
Compression mechanism 100 according to an embodiment of the present invention covers 3 and crankshaft closing component structure by setting crankshaft eccentric, can be real
Crankshaft eccentric can be covered 3 and is locked at the Difference angles of crankshaft 2 by crankshaft closing component structure when existing 2 rotation direction difference of crankshaft,
Being superimposed upon crankshaft eccentric set 3, the eccentricity result on the eccentric part 21 of crankshaft 2 is different, thus keep the stroke of piston 7 different, into
And the decrement of compression mechanism 100 changes, to achieve the purpose that realize that compression mechanism 100 has double refrigerating capacitys.In addition,
By setting connecting rod eccentric bushing 4 and connecting rod closing component structure, it can be achieved that when 2 rotation direction difference of crankshaft link lock close structure can will be even
Bar eccentric bushing 4 is locked at the Difference angles of connecting rod 6, makes the center of connecting rod 6 away from difference, to make the top dead centre of piston 7
It is different with the position of lower dead center.Rationally setting crankshaft closing component structure, under the premise of connecting rod closing component structure, using connecting rod center away from
Variation reduce as the change in location of stop above and below piston stroke piston caused by different, thus the compression of compression mechanism 100
Chamber clearance volume guarantees within zone of reasonableness when crankshaft 2 turns to different that compression mechanism 100 all has higher compression effect
Rate, to reach energy-saving effect.
In some embodiments, as shown in Fig. 2, the internal perisporium of crankshaft eccentric set 3 is equipped with the first notch 31, crankshaft is sealed
Structure includes being connected with eccentric part 21 and cooperating the in the first notch 31 first eccentric pivot pin 34, in 2 two kinds of rotation sides of crankshaft
Upward first eccentric pivot pin 34 can be only against in the two lateral walls of the first notch 31 in the circumferential respectively.For convenience of description, such as
Shown in Fig. 2, claiming the opposite sides wall surface of the first notch 31 in the circumferential is respectively the first sealed face 311 and the second sealed face 312.
Specifically, the top of crankshaft eccentric set 3 is set there are two first boss 32, in the circumferential between two first boss 32
Part constitute the first notch 31.Wherein, a first boss 32 towards the side of first notch 31 be the first sealed face
311, another first boss 32 towards the side of first notch 31 be the second sealed face 312.It is first convex by forming two
Platform 32 limits the first notch 31, is not only easily worked, but also is easy assembly.
It is understood that the first eccentric pivot pin 34 is connected with crankshaft 2, when crankshaft 2 is rotated along any direction, first partially
Mandrel pin 34 can be rotated with crankshaft 2, and after rotating by a certain angle, the first eccentric pivot pin 34 can only be against crankshaft eccentric set 3
A first boss 32 on, complete the sealed of the first eccentric pivot pin 34 and crankshaft 2.It is this limit it is sealed when crankshaft eccentric set 3
Angle position on crankshaft 2, structure is very simple, is easily worked.
For convenience of description, the first direction that hereinafter described middle crankshaft 2 rotates is referred to as forward direction, and second direction is reversed.
By describe above it is found that when crankshaft 2 along rotate in the forward direction when, the first eccentric pivot pin 34 can only be against the first sealed face
On 311, crankshaft eccentric set 3 is locked at the first crank angle position of crankshaft 2 at this time；When crankshaft 2 is along reverse rotation, the
One eccentric pivot pin 34 can be only against on the second sealed face 312, and crankshaft eccentric set 3 is locked in the second crank shaft angle of crankshaft 2 at this time
It spends at position.When the sealed face difference of first eccentric pivot pin 34 and crankshaft 2 rotates crankshaft 2, the bias of 2 eccentric part 21 of crankshaft
Amount is different from the stack result of eccentricity of crankshaft eccentric set 3, i.e. the movement travel of piston 7 is different.
Certainly, in other embodiments of the invention, the first notch 31 can also be formed as the internal perisporium of crankshaft eccentric set 3
On blind hole or perforation, here with no restriction.
In some embodiments, crankshaft 2 is equipped with the first fixation hole 22, and the one end fits of the first eccentric pivot pin 34 are first
In fixation hole 22.This plug connection mode both can guarantee convenient for the separately machined of crankshaft 2 and the first eccentric pivot pin 34
Machining accuracy.
In the embodiment of the present invention, there are many connection types of the first eccentric pivot pin 34 and crankshaft 2, for example, the first eccentric shaft
Pin 34 can be fixed by welding on crankshaft 2 or riveting is on crankshaft 2.
In some alternative embodiments, it is connected to a fixed between crankshaft 2 and the first eccentric pivot pin 34 by connector.Example
It if connector is the first resilient key 91, is connected using the first resilient key 91, there is good elasticity and anti-shearing force, connection is reliable
Stablize.In another example the first fixation hole 22 is formed as threaded hole, the first eccentric pivot pin 34 is equipped with screw thread, be connected through a screw thread by
First eccentric pivot pin 34 is fixed on crankshaft 2, i.e., a part of the first eccentric pivot pin 34 is formed as threaded connector.
In some alternative embodiments, the first eccentric pivot pin 34 is located at the balance portion of the separate crankshaft 2 of crankshaft eccentric set 3
23 side.In this way, the first eccentric pivot pin 34 is equivalent to and crankshaft eccentric set 3 has been stuck in the balance portion 23 of crankshaft 2, the company of raising
Connect reliability.
Certainly, in embodiments of the present invention, crankshaft closing component structure can be not limited to above structure, for example, can be in balance portion 23
Towards crankshaft eccentric set 3 end face on sliding slot is set, then crankshaft eccentric set 3 opposing end surface on traveller, sliding slot are set
Track when can cover 3 according to crankshaft eccentric relative to the rotation of crankshaft 2 is arranged, while there are two extreme positions for sliding slot tool, when crankshaft is inclined
Heart set 3 is locked together at the first crank angle position when turning to an extreme position by traveller, when crankshaft eccentric set 3 turns to separately
It is locked together at the second crank angle position when one extreme position by traveller.
Optionally, crankshaft eccentric set 3 is equipped with the axle sleeve oilhole 33 penetrated through in a thickness direction.Compression mechanism 100 is run
In the process, lubricating oil warp beam sleeve oilhole 33 enters crankshaft eccentric set 3 with the fit clearance of connecting rod eccentric bushing 4, plays lubrication
Effect.
In some embodiments, as shown in figure 3, being equipped with the second notch on the internal perisporium of the crankshaft interconnecting piece 61 of connecting rod 6
611, connecting rod closing component structure includes being connected with connecting rod eccentric bushing 4 and cooperating the in the second notch 611 second eccentric pivot pin 43,
The second eccentric pivot pin 43 can only be against the two lateral walls of the second notch 611 in the circumferential respectively in 2 two kinds of rotation directions of crankshaft
On.For convenience of description, as shown in figure 3, the opposite sides wall surface of the second notch 611 in the circumferential is claimed to be respectively the sealed face of third
6111 and the 4th sealed face 6112.
Specifically, the top of crankshaft interconnecting piece 61 is set there are two second boss 612, in the circumferential two second boss 612
Between part constitute the second notch 611.Wherein, a second boss 612 is that third is locked towards the side of second notch 611
Conjunction face 6111, another second boss 612 towards the side of second notch 611 be the 4th sealed face 6112.By forming two
A second boss 612 limits the second notch 611, is not only easily worked, but also is easy assembly.
It is understood that the second eccentric pivot pin 43 is connected with connecting rod eccentric bushing 4, and when connecting rod eccentric bushing 4 rotates, second
Eccentric pivot pin 43 can be rotated with connecting rod eccentric bushing 4.When crankshaft 2 along rotate in the forward direction when, the second eccentric pivot pin 43 can be only against
On the sealed face 6111 of third, connecting rod eccentric bushing 4 is locked in the first connecting rod angular position of connecting rod 6 at this time；When crankshaft 2 is along anti-
To when rotation, the second eccentric pivot pin 43 can be only against on the 4th sealed face 6112, and connecting rod eccentric bushing 4 is locked in connecting rod 6 at this time
Second connecting rod angular position.When the sealed face difference of second eccentric pivot pin 43 and connecting rod 6 rotates crankshaft 2, connecting rod 6
Center is away from different from the stack result of the eccentricity of connecting rod eccentric bushing 4, i.e., the final center of superposition back link is away from difference.
Certainly, in other embodiments of the invention, the second notch 611 can also be formed as the inner circumferential of connecting rod eccentric bushing 4
Blind hole or perforation on wall, here with no restriction.
In some embodiments, connecting rod eccentric bushing 4 is equipped with the second fixation hole 44, the one end fits of the second eccentric pivot pin 43
In the second fixation hole 44.This plug connection mode, can independently adding convenient for connecting rod eccentric bushing 4 and the second eccentric pivot pin 43
Work guarantees the machining accuracy of the two.
In the embodiment of the present invention, there are many connection types of the second eccentric pivot pin 43 and connecting rod eccentric bushing 4, for example, second
Eccentric pivot pin 43 can be fixed by welding on connecting rod eccentric bushing 4 or riveting is on connecting rod eccentric bushing 4.
In some alternative embodiments, it is connected between connecting rod eccentric bushing 4 and the second eccentric pivot pin 43 by connector
It is fixed.Such as connector is the second resilient key 92, is connected using the second resilient key 92, has good elasticity and anti-shearing force,
It connects reliable and stable.In another example the second fixation hole 44 is formed as threaded hole, the second eccentric pivot pin 43 is equipped with screw thread, passes through spiral shell
Second eccentric pivot pin 43 is fixed on connecting rod eccentric bushing 4 by line connection, i.e., a part of the second eccentric pivot pin 43 is formed as screw thread
Connector.
In some specific embodiments, connecting rod eccentric bushing 4 has main pipe 41 and fixed station 42.Wherein, main pipe 41
Housing has eccentricity on crankshaft eccentric set 3 between the internal perisporium and periphery wall of main pipe 41.Fixed station 42 is formed as fanning
Shape boss, and the side in the separate balance portion 23 of main pipe 41 is set.
Wherein, the second fixation hole 44 is formed on fixed station 42, and the second fixation hole is inserted into one end of the second eccentric pivot pin 43
It is fixed by the second resilient key 92 after 44.
In some alternative embodiments, compression mechanism 100 further includes bearing 5, and bearing 5 is supported on 4 He of connecting rod eccentric bushing
Between crankshaft interconnecting piece 61.The abrasion for reducing connecting rod eccentric bushing 4 Yu crankshaft interconnecting piece 61 as a result, improves connecting rod eccentric bushing 4
With the service life of crankshaft interconnecting piece 61.
Specifically, bearing 5 includes retainer 51 and ball 52.Retainer 51 is formed as tubular, and retainer 51 is folded in
Between connecting rod eccentric bushing 4 and crankshaft interconnecting piece 61, the tube wall of retainer 51 is equipped with retaining hole.Ball 52 is rollably located at guarantor
It holds in hole.In this way, being rolling friction between connecting rod eccentric bushing 4 and connecting rod 6, frictional force can significantly reduce.
More specifically, bearing 5 further includes partition 53, partition 53 is formed as radially inwardly extending from the bottom of retainer 51
Annular slab, partition 53 is located between connecting rod eccentric bushing 4 and the balance portion 23 of crankshaft 2.The setting of partition 53, on the one hand can be improved
On the other hand the overall stiffness of bearing 5 is conducive to for being spaced apart in the balance portion 23 of connecting rod eccentric bushing 4 and crankshaft 2.Some embodiments
In, it is also provided with ball on partition 53, so that forming rolling friction between connecting rod eccentric bushing 4 and the balance portion 23 of crankshaft 2, is kept away
Excessive abrasion is generated after exempting from the two contact.
A specific embodiment compression mechanism 100 of the invention is described below with reference to Fig. 1-Fig. 7.
As shown in Figure 1, the compression mechanism 100 in the present embodiment is eccentric by crankcase 1, crankshaft 2, crankshaft eccentric set 3, first
The eccentric pivot pin 43 of pivot pin 34, connecting rod 6, connecting rod eccentric bushing 4, second, bearing 5, piston pin 71, piston 7, the first resilient key 91, the
Two resilient keys 92 and third resilient key 93 form.
As shown in Figure 1-Figure 3, crankcase 1 is equipped with crankshaft axis hole 11 and piston cylinder holes 12, and crankshaft 2 and crankshaft axis hole 11 are same
Axis and clearance fit, piston 7 are gap-matched mode and are fitted into piston cylinder holes 12, the bias of crankshaft eccentric set 3 and crankshaft 2
Portion 21 is coaxially assembled, and there are fit clearances between crankshaft eccentric set 3 and the eccentric part 21 of crankshaft 2, and crankshaft eccentric set 3 can be around crankshaft
2 eccentric part 21 rotates, while rotation axis of the crankshaft eccentric set 3 with crankshaft 2 around crankshaft 2 rotates, and crankshaft eccentric set 3 is formed as
Circular ring shape, crankshaft eccentric, which covers 3 inner circles, has eccentricity with respect to outer circle.
As shown in Figure 1, Figure 3, the mode housing that connecting rod eccentric bushing 4 is gap-matched is in the outside of crankshaft eccentric set 3, axis
Hold 5 to be coaxially disposed with crankshaft interconnecting piece 61, and housing is in the outside of connecting rod eccentric bushing 4, bearing 5 and crankshaft interconnecting piece 61, bearing 5 with
Clearance fit is all made of between connecting rod eccentric bushing 4.
The eccentric part 21 of crankshaft 2, crankshaft eccentric set 3, connecting rod eccentric bushing 4, bearing 5 and connecting rod 6 crankshaft interconnecting piece 61 it
Between can be rotated around 21 axis of eccentric part of crankshaft 2.
As shown in Figure 1, Figure 3, the eccentric part 21 of crankshaft 2 is equipped with the first fixation hole 22 and the first pilot hole 25, and first partially
Mandrel pin 34 is equipped with the first jack 341, when crankshaft eccentric set 3 with the eccentric part 21 of crankshaft 2 after the assembly is completed, the first eccentric shaft
One end of pin 34 is inserted into the first fixation hole 22, and the first resilient key 91 can be inserted in the first bias after being inserted into the first pilot hole 25
In first jack 341 of pivot pin 34, so as to which the first eccentric pivot pin 34 to be fixed on crankshaft 2, the first eccentric pivot pin 34 can be with
Crankshaft 2 rotates.
Connecting rod eccentric bushing 4 includes main pipe 41 and fixed station 42, and 41 housing of main pipe is responsible on crankshaft eccentric set 3
There is eccentricity, fixed station 42 is formed as fan-shaped boss between the internal perisporium and periphery wall of body 41.Fixed station 42 is equipped with second
Fixation hole 44 and the second pilot hole 45, the second eccentric pivot pin 43 are equipped with the second jack 431, when connecting rod eccentric bushing 4 and bearing 5,
After the assembly is completed, the second fixation hole 44, the second assembly of the second resilient key 92 insertion are inserted into one end of the second eccentric pivot pin 43 to connecting rod 6
It can be inserted in behind hole 45 in second jack 431, to the second eccentric pivot pin 43 is fixed on connecting rod eccentric bushing 4, the second eccentric shaft
Pin 43 can be rotated with connecting rod eccentric bushing 4.
Piston 7 and 12 gap of piston cylinder holes are assembled, and the Piston connecting portion 62 on connecting rod 6 is inserted into the intermediate position of piston 7, living
Plug pin 71 passes through piston 7 and piston 7 is connected with connecting rod 6 with Piston connecting portion 62.Third resilient key 93 be inserted into piston 7 in and with
Third jack 711 on piston pin 71 cooperates, so that piston pin 71 is fixed on piston 7.
The compression mechanism 100 of the present embodiment changes the stroke of piston 7 by way of 2 positive and negative rotation of crankshaft to realize one
There are two types of the effects of volume refrigerating capacity compressor for the tool of compression mechanism 100.
As shown in fig. 4-5, when crankshaft 2 rotates forward, crankshaft 2 drives the first eccentric pivot pin 34 to rotate forward, and crankshaft eccentric covers 3 phases
After rotating the first crankshaft set angle to crankshaft 2, the first eccentric pivot pin 34 stops the first sealed face 311 for being against the first notch 31
On, to be locked at the first crank angle position of crankshaft 2.At this point, 2 eccentricity of crankshaft reaches maximum value.Due to crankshaft
Eccentric bushing 3 has been locked together on crankshaft 2, and crankshaft eccentric set 3 will be rotated synchronously with crankshaft 2.Later, crankshaft 2 continues to rotate, even
For bar eccentric bushing 4 after 3 rotation first connecting rod set angle of crankshaft eccentric set, the second eccentric pivot pin 43 is only against the second notch
On the sealed face 6111 of 611 third, to be locked in the first connecting rod angular position of connecting rod 6.At this point, 6 center of connecting rod away from
Reach minimum value.The rotation of crankshaft 2 drives connecting rod 6 as a result, and connecting rod 6 drives piston 7 to move up and down, and stroke is range, i.e.,
Compression mechanism 100 has maximum cooling capacity.
As Figure 6-Figure 7, when crankshaft 2 inverts, crankshaft 2 drives the second eccentric pivot pin 43 to invert, and crankshaft eccentric covers 3 phases
After rotating the second crankshaft set angle to crankshaft 2, the second eccentric pivot pin 43 stops the second sealed face 312 for being against the first notch 31
On, to be locked at the second crank angle position of crankshaft 2.At this point, 2 eccentricity of crankshaft reaches minimum value.Due to crankshaft
Eccentric bushing 3 has been locked together on crankshaft 2, and crankshaft eccentric set 3 will be rotated synchronously with crankshaft 2.Later, crankshaft 2 continues to rotate, even
For bar eccentric bushing 4 after 3 rotation 6 set angle of second connecting rod of crankshaft eccentric set, the second eccentric pivot pin 43 is only against the second notch
On the sealed face 6112 of the 4th of 611, to be locked in the second connecting rod angular position of connecting rod 6.At this point, 6 center of connecting rod away from
Reach maximum value.The rotation of crankshaft 2 drives connecting rod 6 as a result, and connecting rod 6 drives piston 7 to move up and down, and stroke is minimum stroke, i.e.,
Compression mechanism 100 has minimum refrigerating capacity.
It is understood that when 7 stroke maximum of piston, reduce the center of connecting rod 6 away from can be to avoid since stroke is excessive
Piston 7 is caused to collide with crankcase 1.When 7 stroke minimum of piston, increase the center of connecting rod 6 away from can be to avoid due to row
Journey is too small to cause compression space to waste.Therefore, the compression mechanism 100 in the present embodiment passes through setting connecting rod eccentric bushing 4 and connecting rod
Closing component structure, in 2 positive and negative rotation of crankshaft, connecting rod 6 has different centers away from more than the compressor chamber that ensure that compression mechanism 100
Gap volume is within zone of reasonableness.It ensure that compression mechanism 100 all has higher compression efficiency when crankshaft 2 turns to different,
To reach energy-saving effect.
In the present embodiment, as shown in Figure 4-Figure 7, no matter crankshaft main story or invert, when piston motion is to top dead centre,
Piston end surface S1 is t at a distance from the S2 of crankcase end face.
Reciprocating compressor according to an embodiment of the present invention, including the reciprocating pressure described according to that above embodiment of the present invention
The compression mechanism 100 of contracting machine.
A compressor two may be implemented in the stroke for changing compressor piston 7 by way of prime mover positive and negative rotation as a result,
The effect of kind volume refrigerating capacity compressor.By setting connecting rod center away from regulating mechanism, more than the compressor chamber that ensure that compression mechanism 100
Gap volume is within zone of reasonableness.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (11)
1. a kind of compression mechanism of reciprocating compressor characterized by comprising
Crankshaft, the crankshaft have eccentric part；
Connecting rod, the both ends of the connecting rod are respectively crankshaft interconnecting piece and Piston connecting portion, and the crankshaft interconnecting piece housing is described
On eccentric part；
Piston, the piston are connected with the Piston connecting portion；
Crankshaft eccentric set, the crankshaft eccentric set are set between the crankshaft interconnecting piece and the eccentric part, and the crankshaft is inclined
There is eccentricity between the internal perisporium and periphery wall of heart set；
Crankshaft closing component structure, the crankshaft closing component structure is located between the crankshaft eccentric set and the crankshaft, when the crankshaft
The crankshaft eccentric set can be locked at the Difference angles of the crankshaft by the crankshaft closing component structure when rotation direction difference
Place, so that the stroke of the piston is different；
Connecting rod eccentric bushing, the connecting rod eccentric bushing are set between the crankshaft eccentric set and the crankshaft interconnecting piece, the company
There is eccentricity between the internal perisporium and periphery wall of bar eccentric bushing；
Connecting rod closing component structure, the connecting rod closing component structure is located between the connecting rod eccentric bushing and the connecting rod, when the crankshaft
The connecting rod eccentric bushing can be locked at the Difference angles of the connecting rod by the connecting rod closing component structure when rotation direction difference
Place, so that the center of the connecting rod is away from difference.
2. the compression mechanism of reciprocating compressor according to claim 1, which is characterized in that the crankshaft eccentric covers interior
Peripheral wall is equipped with the first notch, and the crankshaft closing component structure includes being connected with the eccentric part and cooperating in first notch
The first eccentric pivot pin, the described first eccentric pivot pin can only be against described first respectively and lack in two kinds of rotation directions of the crankshaft
In the two lateral walls of mouth in the circumferential.
3. the compression mechanism of reciprocating compressor according to claim 2, which is characterized in that the top of the crankshaft eccentric set
Portion is set there are two first boss, and the part between described two first boss constitutes first notch in the circumferential.
4. the compression mechanism of reciprocating compressor according to claim 2, which is characterized in that the crankshaft is equipped with first
Eccentric pin hole, the one end fits of the described first eccentric pivot pin are in the described first eccentric pin hole.
5. the compression mechanism of reciprocating compressor according to claim 1, which is characterized in that the crankshaft interconnecting piece it is interior
Peripheral wall is equipped with the second notch, and the connecting rod closing component structure includes being connected and cooperating to lack described second with the connecting rod eccentric bushing
The second eccentric pivot pin in mouthful, the described second eccentric pivot pin can only be against described the respectively in two kinds of rotation directions of the crankshaft
In the two lateral walls of two notches in the circumferential.
6. the compression mechanism of reciprocating compressor according to claim 5, which is characterized in that the top of the crankshaft interconnecting piece
Portion is set there are two second boss, and the part between described two second boss constitutes second notch in the circumferential.
7. the compression mechanism of reciprocating compressor according to claim 5, which is characterized in that set on the connecting rod eccentric bushing
There is the second eccentric pin hole, the one end fits of the described second eccentric pivot pin are in the described second eccentric pin hole.
8. the compression mechanism of reciprocating compressor described in any one of -7 according to claim 1, which is characterized in that further include axis
It holds, the bearing support is between the connecting rod eccentric bushing and the crankshaft interconnecting piece.
9. the compression mechanism of reciprocating compressor according to claim 8, which is characterized in that the bearing includes:
Retainer, the retainer are formed as tubular, and the retainer is folded in the connecting rod eccentric bushing and the crankshaft connects
Between socket part, the tube wall of the retainer is equipped with retaining hole；
Ball, the ball are rollably located in the retaining hole.
10. the compression mechanism of reciprocating compressor according to claim 9, which is characterized in that the bearing further include every
Plate, the partition are formed as the annular slab radially inwardly extending from the bottom of the retainer, and the partition is located at the company
Between bar eccentric bushing and the bent shaft balancing portion.
11. a kind of reciprocating compressor, which is characterized in that including reciprocating pressure according to claim 1 to 10
The compression mechanism of contracting machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710392432.5A CN106988992B (en) | 2017-05-27 | 2017-05-27 | The compression mechanism and reciprocating compressor of reciprocating compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710392432.5A CN106988992B (en) | 2017-05-27 | 2017-05-27 | The compression mechanism and reciprocating compressor of reciprocating compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106988992A CN106988992A (en) | 2017-07-28 |
| CN106988992B true CN106988992B (en) | 2019-06-07 |
Family
ID=59420134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710392432.5A Active CN106988992B (en) | 2017-05-27 | 2017-05-27 | The compression mechanism and reciprocating compressor of reciprocating compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106988992B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100487962B1 (en) * | 2002-10-31 | 2005-05-06 | 엘지전자 주식회사 | Latching mechanism of dual capacity compressor |
| CN100344873C (en) * | 2003-06-25 | 2007-10-24 | 乐金电子(天津)电器有限公司 | Locking device for dual capacity compressor |
| KR100830944B1 (en) * | 2007-02-06 | 2008-05-20 | 엘지전자 주식회사 | Reciprocating compressor |
| JP2010096244A (en) * | 2008-10-15 | 2010-04-30 | Amadera Kuatsu Kogyo Kk | Mounting method of crank to bearing and bearing mechanism |
| CN105065229B (en) * | 2015-07-23 | 2017-03-29 | 安徽美芝制冷设备有限公司 | Link assembly for compressor and the piston compressor with which |
| CN206801814U (en) * | 2017-05-27 | 2017-12-26 | 安徽美芝制冷设备有限公司 | The compression mechanism and reciprocating compressor of reciprocating compressor |
-
2017
- 2017-05-27 CN CN201710392432.5A patent/CN106988992B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106988992A (en) | 2017-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2169456A (en) | Fluid motor or pump | |
| CN109707622A (en) | Ball pump | |
| CN105756932A (en) | Spherical compressor | |
| JP3314562B2 (en) | Scroll compressor | |
| CN206770163U (en) | The compression mechanism and reciprocating compressor of reciprocating compressor | |
| CN106996363A (en) | The compression mechanism and reciprocating compressor of reciprocating compressor | |
| JP2007535633A (en) | Long piston hydraulic machine | |
| CN106988992B (en) | The compression mechanism and reciprocating compressor of reciprocating compressor | |
| CN206801814U (en) | The compression mechanism and reciprocating compressor of reciprocating compressor | |
| CN209494702U (en) | Ball pump | |
| CN106536934B (en) | Rotary compressor | |
| WO2019237690A1 (en) | Compressor and vehicle having same | |
| JP2014080893A (en) | Hermetic reciprocating compressor and refrigerator using the same | |
| WO2015139554A1 (en) | Anti-locking mechanism of spherical compressor rotor, anti-locking power mechanism of spherical compressor, and spherical compressor | |
| CN103291588B (en) | A kind of rocking arm type limit rotation mechanism and the compressor with this rocking arm type limit rotation mechanism | |
| CN206860663U (en) | The crankshaft eccentric set and compression mechanism, reciprocating compressor of reciprocating compressor | |
| CN203321780U (en) | Rocker arm type rotation limiting mechanism and compressor with same | |
| JP2713655B2 (en) | Anti-rotation mechanism | |
| CN109026715B (en) | Pump body and compressor with same | |
| CN105673489A (en) | Spherical compressor | |
| CN109356855A (en) | A kind of refrigeration equipment and its compressor | |
| JP6005260B2 (en) | Vane type compressor | |
| CN209340100U (en) | A kind of crankshaft of compressor integral type | |
| JP2019513946A (en) | Spherical compressor | |
| WO2018218944A1 (en) | Compression mechanism of reciprocating compressor, and reciprocating compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |