CN105065229A - Connection rod assembly used for compressor and piston type compressor with connection rod assembly - Google Patents
Connection rod assembly used for compressor and piston type compressor with connection rod assembly Download PDFInfo
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- CN105065229A CN105065229A CN201510444220.8A CN201510444220A CN105065229A CN 105065229 A CN105065229 A CN 105065229A CN 201510444220 A CN201510444220 A CN 201510444220A CN 105065229 A CN105065229 A CN 105065229A
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Abstract
The invention discloses a connection rod assembly used for a compressor and the piston type compressor with the connection rod assembly. The connection rod assembly used for the compressor comprises a connection rod and an eccentric connection part, wherein the connection rod is provided with a first installation hole and a second installation hole; the eccentric connection part is provided with an inner connection portion and an outer connection portion; the inner connection portion is eccentrically arranged relative to the outer connection portion; the outer connection portion is matched with the first installation hole and is connected to the first matching position and the second matching position of the first installation hole in a switchable mode; the center distance between the inner connection portion and the second installation hole when the outer connection portion is at the first matching position is greater than that between the inner connection portion and the second installation hole when the outer connection portion is at the second matching position. According to the connection rod assembly used for the compressor, the refrigerating capacity of the compressor can be adjusted to a certain extent, so that the functions of energy conservation and rapid refrigeration are achieved.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, more specifically, relate to a kind of link assembly for compressor and there is its piston compressor.
Background technique
In real life, for refrigerator, refrigerating capacity needed for its piston compressor is usually relevant to the article deposited, not only energy-conservation but also freeze fast for realizing, usually make compressor in high-power lower operation to ensure large refrigerating capacity when the article stored are more, when article that are enough cold at its refrigeration space or that store are less, make compressor run to ensure little refrigerating capacity under low-power.
In correlation technique, run with the rotating speed that specified power is fixing in the constant speed compressor real works such as piston compressor, therefore the refrigerating capacity of piston compressor within the unit time is also fixing substantially, usually can not meet above-mentioned energy-conservation while fast-refrigerating object.
Usually adopt frequency-changeable compressor to reach the not only energy-conservation but also object of quick refrigeration for this reason.But there are the following problems to adopt frequency-changeable compressor:
On the one hand, because compressor load when frequency-changeable compressor high frequency operates is large, therefore there is higher requirement to the mechanical structure of compressor, the mechanical structure cost of production of compressor can be caused like this to increase and manufacturing efficiency reduces greatly; On the other hand, the cost of the motor of frequency-changeable compressor and the cost of control unit higher, much more expensive than constant speed compressor of the cost of a frequency-changeable compressor.
Therefore, be badly in need of a kind of cost low, the piston compressor of refrigerating capacity can be regulated simultaneously according to user demand.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, one object of the present invention is to propose a kind of link assembly for compressor that can adjust compressor and freeze ability to a certain extent.
The invention allows for a kind of piston compressor.
The link assembly for compressor of embodiment comprises according to a first aspect of the present invention: connecting rod, and described connecting rod has the first mounting hole and the second mounting hole; Eccentric connector, described eccentric connector has interior joint and outer joint, the relatively described outer joint eccentric setting of described interior joint, described outer joint coordinates with described first mounting hole and on described outer joint the first cooperation position of being switchably connected to described first mounting hole and the second cooperation position, when the first cooperation position, the centre distance of described interior joint and described second mounting hole is greater than the centre distance of described interior joint and described second mounting hole when the second cooperation position.
According to the link assembly for compressor of the embodiment of the present invention, compressor and freeze ability can be regulated to a certain extent, thus play can energy-conservation again can the effect of fast-refrigerating.
Preferably, when described eccentric connector is rotated in a first direction, described outer joint is suitable for coordinating at the first cooperation position with described first mounting hole, when described eccentric connector is rotated in a second direction, described outer joint is suitable for coordinating at the second cooperation position with described first mounting hole, and described second direction is opposite to the first direction.
Preferably, described eccentric connector also comprises the projection be located on described outer joint, described projection has the first blocked part and the second blocked part, the chute extended along its circumference is provided with in described first mounting hole, described chute has the 3rd blocked part and the 4th blocked part, described projection is located in described chute slidably, and described in the first cooperation position, the first blocked part and described 3rd blocked part are only supported and the second blocked part and described 4th blocked part are only supported mutually described in the second cooperation position mutually.
Preferably, the number of described projection is that multiple and along described outer joint circumference is uniform, and the number of described chute is that multiple and along described first mounting hole circumference distributes, described chute and described projection one_to_one corresponding.
Preferably, be also provided with the mounting groove for inserting for described projection in described first mounting hole, described mounting groove extends inwardly to crossing with described chute from one end of described first mounting hole, and the shape of described mounting groove is consistent with the shape of described projection.
Preferably, the sidepiece of described chute and the sidepiece of described projection suitable, described first and second blocked parts are two end faces of described projection and the radial direction along described outer joint extends, and the described 3rd and the 4th blocked part is two end faces of described chute and the radial direction along described first mounting hole extends.
Preferably, described eccentric connector is the axle sleeve of annular, and described annular sleeve has the outer wall of annular and the eccentric inner hole of relatively described outer wall eccentric setting, and described eccentric inner hole is formed as described interior joint, and described outer wall is formed as described outer connector.
Preferably, the eccentric inner hole surface of described axle sleeve is provided with wearing layer.
The piston compressor of embodiment according to a second aspect of the present invention, comprising: motor; Crankcase, is provided with bent axle in described crankcase, and described motor is connected to drive described crank rotation with the input end of described bent axle, and the output terminal of described bent axle has eccentric journal; Above-mentioned link assembly, described eccentric journal is connected pivotly with described interior joint; Piston, the second mounting hole of described connecting rod is connected pivotly with described piston; Cylinder block, in described cylinder block, there is active chamber, described piston is located in described active chamber slidably, when described piston is in the dead-centre position of exhaust stroke, limit clearance between the end of described piston and described cylinder block, clearance when described outer joint is in the first cooperation position is less than clearance when described outer joint is in the second cooperation position.
Preferably, when described outer joint switches between the first cooperation position and the second cooperation position, described clearance increases gradually.
Accompanying drawing explanation
Fig. 1 is the cross-sectional schematic of the piston compressor according to the embodiment of the present invention, and wherein motor turns clockwise and piston is in the dead-centre position of exhaust stroke.
Fig. 2 is the cross-sectional schematic of the link assembly shown in Fig. 1 along another angle.
Fig. 3 is the cross-sectional schematic of the piston compressor according to the embodiment of the present invention, and wherein motor is rotated counterclockwise and piston is in the dead-centre position of exhaust stroke.
Fig. 4 is the cross-sectional schematic of the link assembly shown in Fig. 3 along another angle.
Fig. 5 is the schematic perspective view of the link assembly for compressor according to the embodiment of the present invention.
Fig. 6 is the floor map of the link assembly for compressor according to the embodiment of the present invention.
Fig. 7 is the cross-sectional schematic of the connecting rod of the link assembly for compressor according to the embodiment of the present invention.
Fig. 8 is the schematic front view of the eccentric connector of the link assembly for compressor according to the embodiment of the present invention.
Fig. 9 is that schematic diagram is looked on a left side for the eccentric connector of the link assembly for compressor according to the embodiment of the present invention.
Reference character:
Link assembly 100, piston compressor 1000,
Connecting rod 10, the first mounting hole 11, chute 111, the 3rd blocked part 111a, the 4th blocked part 111b, mounting groove 112, the second mounting hole 12,
Eccentric connector 20, interior joint 21, outer joint 22, projection 23, the first blocked part 232, blocked part 231, second,
Crankcase 200, bent axle 201, eccentric journal 201a,
Piston 300,
Cylinder block 400, active chamber 401, the end 402 of cylinder block,
The centre distance A of interior joint and the second mounting hole during the first cooperation position, the centre distance B of interior joint and outer joint during the second cooperation position, the clearance C1 of compressor when outer joint is in the first cooperation position, the clearance C2 of compressor when outer joint is in the first cooperation position, throw of eccentric E, clockwise direction X, counterclockwise Y.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
Referring to Fig. 1 to Fig. 9, the piston compressor 1000 of the embodiment of the present invention and the link assembly 100 for compressor are described.
As shown in Figure 1, the piston compressor 1000 of embodiment comprises according to an aspect of the present invention: motor, crankcase 200, link assembly 100, piston 300, cylinder block 400.
Be provided with bent axle 201 in crankcase 200, motor is connected with the input end of bent axle 201 and rotates with driving crank 201, and the output terminal of bent axle 201 has eccentric journal 201a, and eccentric journal 201a is connected pivotly with interior joint 21.Link assembly 100 for compressor comprises: connecting rod 10 and eccentric connector 20.Connecting rod 10 has the first mounting hole 11 and the second mounting hole 12, second mounting hole 12 of connecting rod 10 is connected pivotly with piston 300, there is in cylinder block 400 active chamber 401, piston 300 is located in active chamber 401 slidably, when piston 300 is in the dead-centre position of exhaust stroke, between the end 402 of piston 300 and cylinder block, limit clearance.
Eccentric connector 20 has interior joint 21 and outer joint 22, interior joint 21 mutually external joint 22 eccentric setting, outer joint 22 is connected with the first mounting hole 11, and on outer joint 22 the first cooperation position of being switchably connected to the first mounting hole 11 and the second cooperation position, when the first cooperation position, the centre distance A of interior joint and the second mounting hole is greater than the centre distance B of interior joint and the second mounting hole when the second cooperation position, and then the clearance C1 of compressor is less than the clearance C2 of compressor when outer joint is in the second cooperation position when making outer joint be in the first cooperation position.
Due to, in piston compressor 1000 working procedure, the part volume remaining pressurized gas after its exhaust process terminates in active chamber 401 is called clearance volume.Part clearance volume is wearing and tearing between thermal expansion owing to considering relevant elements and relative movement part and foozle etc., must make when piston 300 is in dead-centre position to leave certain gap between piston 300 top and cylinder block 400 end, brush up against cylinder block 400 end (cylinder cap) to prevent piston 300.
According to the piston compressor of the embodiment of the present invention, higher value or smaller value is in by the clearance of compressor that turns to make of motor under change working state, and then run make compressor can switch to the pattern of high power high refrigerating capacity when refrigeration capacity requirement is larger under, when refrigeration capacity requirement is less, compressor runs under switching to the pattern of the low refrigerating capacity of low-power, reaches energy-conservation thus and the object of fast-refrigerating.
Wherein, crankcase and cylinder block can be single piece, also can be two independently bulk-breakings.
In a preferred embodiment, when outer joint 22 switches between the first cooperation position and the second cooperation position, clearance increases gradually.Like this, when compressor application is on refrigerating plant, when refrigerating plant needs larger refrigerating capacity, adjustment motor steering, the centre distance of link assembly 100 is increased, and now clearance is minimum.When refrigerating plant needs lower refrigerating capacity, again adjust motor steering, now the centre distance of link assembly 100 is the shortest, and clearance increases, and compressor will run with the low cold of low-power.Thus, increase the difference of outer joint 22 clearance when the first cooperation position and the second cooperation position, thus the exportable refrigerating capacity scope of compressor is increased, enhance the refrigerating capacity regulating power of compressor.
The refrigeration adjustment process of the piston compressor of the embodiment of the present invention is described referring to Fig. 1 to Fig. 4.
As depicted in figs. 1 and 2, the eccentric journal X rotation along clockwise direction of motor driven crankshafts 201, when further drive eccentric connector 20 rotates also in the counterclockwise direction, outer joint 22 is engaged in the first cooperation position (with reference to Fig. 2), the centre distance of link assembly 100 reduces, the now clearance of compressor is in smaller value, and then the gas volume making the suction valve of compressor suck increases, respective row tolerance increases, and compressor can with the low cold mode operation of high power.
As shown in Figures 3 and 4, the eccentric journal Y rotation in the counterclockwise direction of motor driven crankshafts 201, further drive eccentric connector 20 rotates along clockwise direction and makes outer joint 22 be engaged in the second cooperation position (with reference to Fig. 4), the centre distance of link assembly 100 increases, the now clearance of compressor is in higher value, and then the gas volume making the suction valve of compressor suck decreases, respective row tolerance reduces, and compressor can with the low cold mode operation of low-power.
As shown in Figure 5, the link assembly 100 for compressor of embodiment comprises according to a further aspect of the invention: connecting rod 10 and eccentric connector 20.
Wherein, connecting rod 10 has the first mounting hole 11 and the second mounting hole 12, eccentric connector 20 has interior joint 21 and outer joint 22, outer joint 22 is connected with the first mounting hole 11, and on outer joint 22 the first cooperation position of being switchably connected to the first mounting hole 11 and the second cooperation position, interior joint 21 mutually external joint 22 eccentric setting, when the first cooperation position, the centre distance A of interior joint and the second mounting hole is greater than the centre distance B of interior joint and the second mounting hole when the second cooperation position.
It should be noted that, the centre distance of interior joint and the second mounting hole refer to distance between the central axis of interior joint and the central axis of the second mounting hole the second mounting hole and the first mounting hole center line orthographic projection length in the plane.
According to the link assembly 100 for compressor of the embodiment of the present invention, outer joint 22 is changeable between the first cooperation position and the second cooperation position, the centre distance B of interior joint and the second mounting hole when simultaneously the centre distance A of interior joint and the second mounting hole is greater than the second cooperation position when the first cooperation position, on this basis, when link assembly 100 is applied on compressor, outer joint 22 is different with the clearance of compressor during the second cooperation position at the first cooperation position, and then the air displacement of compressor is different under above-mentioned two states, correspondingly refrigerating capacity is also different, user can control the position of outer joint 22 according to the actual requirements thus, thus suitable refrigerating capacity is obtained to the refrigerating capacity adjustment of compressor, and then reach can energy-conservation again can the object of fast-refrigerating.
It will be appreciated by those skilled in the art that, during actual use, when compressor needs large refrigerating capacity, the outer joint 22 in link assembly 100 is connected to the first cooperation position, now the clearance of compressor is less, and therefore the air displacement of compressor is comparatively large and the refrigerating capacity making it produce is larger; Correspondingly, when compressor needs little refrigerating capacity, the outer connector in link assembly 100 is connected to the second cooperation position, and now the clearance of compressor is less, and therefore the air displacement of compressor is less and its compressor is produced refrigerating capacity is less.
In one particular embodiment of the present invention, as shown in Figure 5, eccentric connector 20 is the axle sleeve of annular, and the axle sleeve of annular has the outer wall of annular and the eccentric inner hole of opposite outer walls eccentric setting, eccentric inner hole is formed as interior joint 21, and outer wall is formed as outer connector.Particularly, the large end of connecting rod 10 has the first mounting hole 11 and the small end of connecting rod 10 has the second mounting hole 12, first mounting hole 11 is suitable with the outer wall of axle sleeve, outer wall and endoporus are annular, second mounting hole 12 for suitable with the piston 300 of compressor, the eccentric inner hole of axle sleeve be used for being connected pivotly with the bent axle 201 of compressor with by transmission of power to connecting rod 10.Thus, eccentric connector 20 adopts axle sleeve, not only makes link assembly 100 compact overall structure, and can bear larger impact force, is convenient to transmission of power.
Wherein, in the concrete example shown in Fig. 5, the outer wall of axle sleeve and endoporus are roughly rotatable structure, be such as cylindrical, it will be appreciated by those skilled in the art that, the outer wall of axle sleeve and the shape of endoporus are not limited to cylindrical, can also be arc, spline shape or there is the cylindrical etc. of concave point, the shape of the outer wall of axle sleeve wants to meet outer wall can switching between the first mounting hole 11 and the second mounting hole 12, and the shape of the endoporus of axle sleeve wants the axle journal that can meet bent axle 201 can rotate in endoporus.
Further, when relatively rotating between the axle journal of bent axle 201 and the endoporus of axle sleeve, produce larger force of sliding friction between axle journal and endoporus, the friction of Long-Time Service to endoporus is larger.For strengthening the wear resistance of the endoporus of axle sleeve, the eccentric inner hole surface of the axle sleeve of annular is provided with wearing layer.Particularly, wearing layer can be distributed on whole internal surfaces of endoporus, also can only be distributed on the portion inner surface of endoporus, axle sleeve itself can adopt Babbitt, Cuprum alloy, powder metallurgy and the material such as gray cast iron and wear resisting cast iron, also can adopt the materials such as polymer, carbon graphite and special cermacis, wearing layer can be the nickel dam of coating at surface of inner hole of shaft sleeve.
According to one embodiment of present invention, with reference to Fig. 2, when eccentric connector 20 is rotated in a first direction, outer joint 22 is suitable for coordinating at the first cooperation position with the first mounting hole 11, with reference to Fig. 4, when eccentric connector 20 is rotated in a second direction, outer joint 22 is suitable for coordinating at the second cooperation position with the first mounting hole 11, and second direction is contrary with first direction.
For example, definition first direction is counterclockwise, second direction is clockwise direction, as depicted in figs. 1 and 2, when motor rotates along clockwise direction, driven by motor bent axle 201 rotating in same direction, the axle journal of bent axle 201 produces reciprocal thrust to eccentric connector 20 and rotates in the counterclockwise direction to promote eccentric connector 20, and then outer joint 22 is turned to coordinate at the first cooperation position with the first mounting hole 11.In like manner, as shown in Figure 3 and Figure 4, when motor rotates in the counterclockwise direction, driven by motor bent axle 201 rotating in same direction, the axle journal of bent axle 201 produces reciprocal thrust to eccentric connector 20 and rotates along clockwise direction to promote eccentric connector 20, and then outer joint 22 is turned to coordinate at the second cooperation position with the first mounting hole 11.
Like this, eccentric connector 20 rotatably switches to the first cooperation position and the second cooperation position under moment of rotation drives, in compressor operation, drive the outer joint 22 of eccentric connector 20 and the adapting position of the first mounting hole 11 of connecting rod 10 by the sense of rotation of switch motor, and then make above-mentioned centre distance change to obtain different refrigerating capacitys.That is, the sense of rotation by changing motor can make compressor switch between two refrigerating capacitys.
It will be appreciated by those skilled in the art that, first direction can also be clockwise direction, second direction is counterclockwise, correspondingly, the first cooperation position and the second cooperation position need rationally to arrange and are greater than eccentric connector 20 with the described centre distance met when eccentric connector 20 is clockwise to the first cooperation position and rotate counterclockwise to described centre distance during the second cooperation position.
According to one embodiment of present invention, as shown in Figure 8, eccentric connector 20 also comprises the projection 23 be located on described outer joint 22, projection 23 has the first blocked part 231 and the second blocked part 232, as shown in Figure 7, the chute 111 extended along its circumference is provided with in first mounting hole 11, chute 111 has the 3rd blocked part 111a and the 4th blocked part 111b, as shown in Figure 5, projection 23 is located in chute 111 slidably, only support (with reference to Fig. 2) in the first cooperation position first blocked part 231 with the 3rd blocked part 111a phase and only support (with reference to Fig. 4) in the second cooperation position second blocked part 232 and the 4th blocked part 111b phase.
In other words, in the specific embodiment shown in Fig. 8 and Fig. 9, eccentric connector 20 is axle sleeve, the outer wall of axle sleeve is provided with projection 23, there is in first mounting hole 11 chute 111 slided for this projection 23, projection 23 two ends circumferentially have the first blocked part 231 and the second blocked part 232 respectively, correspondingly, chute 111 two ends circumferentially have the 3rd blocked part 111a and the 4th blocked part 111b respectively, wherein the first blocked part 231 is relative with the 3rd blocked part 111a, and the second blocked part 232 is relative with the 4th blocked part 111b.
Like this, when eccentric connector 20 is rotated in a first direction, the axle journal of bent axle 201 promotes eccentric connector 20 and is rotated in a first direction and the first blocked part 231 of projection 23 is only supported with the 3rd blocked part 111a phase of connecting rod 10, makes eccentric connector 20 rest on the first cooperation position thus under the driving effect of moment of rotation; Correspondingly, when eccentric connector 20 is rotated in a second direction, the axle journal of bent axle 201 promotes eccentric connector 20 and is rotated in a second direction, and the second blocked part 232 of projection 23 is only supported with the 4th blocked part 111b phase of connecting rod 10, makes eccentric connector 20 rest on the second cooperation position thus under the driving effect of moment of rotation.
The outer joint 22 adopting above-mentioned projection 23 to coordinate with chute 111 to realize eccentric connector 20, in the switching of the first link position and the second link position, not only makes link assembly 100 structure simple, compact, greatly reduces cost of production, be convenient to batch production; And in the process of to slide along chute 111 at projection 23, chute 111 pairs of projections 23 form slide-and-guide that is spacing and circumferentially direction in axial direction, make eccentric connector 20 switching between the first position and the second position more steady.
In a preferred embodiment, as shown in FIG. 7 and 8, the number of projection 23 is that multiple and along outer joint 22 circumference is uniform, and the number of chute 111 is that multiple and along the first mounting hole 11 circumference distributes, chute 111 and projection 23 one_to_one corresponding.Specifically, as shown in Figure 1, the number of projection 23, chute 111 is two, and the central shaft of two relative connecting rods 10 of chute 111 is symmetrical, and also externally the central shaft of joint 22 is symmetrical mutually for two projections 23.Thus, further enhancing tightness and stability that eccentric connector 20 is connected with connecting rod 10, what eccentric connector 20 was switched between the first cooperation position and the second cooperation position is more steady.
Advantageously, as shown in Figure 6 to 8, also be provided with the mounting groove 112 for inserting for projection 23 in first mounting hole 11, mounting groove 112 extends inwardly to crossing with chute 111 from one end of the first mounting hole 11, and the shape of mounting groove 112 is consistent with the shape of projection 23.Thus, the setting of mounting groove 112 be convenient to eccentric connector 20 and connecting rod 10 rapid-assembling/disassembling, be convenient to assemble and keep in repair.
With reference to Fig. 7 and Fig. 8, outer wall and eccentric inner hole are roughly cylindrical, the diameter of outer wall is Φ D1, the diameter of eccentric inner hole is Φ D2, both throw of eccentric are E, those skilled in the art according to conventional large refrigerating capacity and little refrigerating capacity, can arrange the first suitable cooperation position and the offset of the second cooperation position and eccentric connector 20.
Particularly, as shown in Figure 7 and Figure 8, the quantity of mounting groove 112 is consistent with the quantity of projection 23, each mounting groove 112 is all communicated with the middle part of chute 111, when outer joint 22 first cooperation position and the second cooperation position, projection 23 and mounting groove 112 stagger (see Fig. 2 and Fig. 4) in the axial direction.Like this, under the prerequisite being convenient to eccentric connector 20 installation, avoid the eccentric connector 20 when the first cooperation position and the second cooperation position and deviate from, enhance stability and and the reliability of link assembly 100 motion.
In certain embodiments, as shown in Figure 7, the sidepiece of chute 111 and the sidepiece of projection 23 suitable, the first blocked part 231 and the second blocked part 232 are two end faces of projection 23 and the radial direction along outer joint 22 extends.As shown in Figure 8, the 3rd blocked part 111a and the 4th blocked part 111b is two end faces of chute 111 and the radial direction along the first mounting hole 11 extends.Thus, increase the area of contact of connecting rod 10 and two blocked parts of eccentric connector 20, to avoid the eccentric connector 20 when the first cooperation position and the second cooperation position that play occurs, thus the large refrigerating capacity that compressor is exported or little refrigerating capacity more even.
Link assembly in the piston compressor 1000 of above-described embodiment can adopt the link assembly 100 for compressor in above-described embodiment, is above-mentionedly all applicable to piston compressor 1000 about the embodiment in link assembly 100.
In describing the invention, it will be appreciated that, orientation or the position relationship of the instruction such as term " clockwise ", " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (10)
1. for a link assembly for compressor, it is characterized in that, comprising:
Connecting rod, described connecting rod has the first mounting hole and the second mounting hole;
Eccentric connector, described eccentric connector has interior joint and outer joint, the relatively described outer joint eccentric setting of described interior joint, described outer joint coordinates with described first mounting hole and on described outer joint the first cooperation position of being switchably connected to described first mounting hole and the second cooperation position, when the first cooperation position, the centre distance of described interior joint and described second mounting hole is greater than the centre distance of described interior joint and described second mounting hole when the second cooperation position.
2. the link assembly for compressor according to claim 1, it is characterized in that, when described eccentric connector is rotated in a first direction, described outer joint is suitable for coordinating at the first cooperation position with described first mounting hole, when described eccentric connector is rotated in a second direction, described outer joint is suitable for coordinating at the second cooperation position with described first mounting hole, and described second direction is opposite to the first direction.
3. the link assembly for compressor according to claim 2, it is characterized in that, described eccentric connector also comprises the projection be located on described outer joint, described projection has the first blocked part and the second blocked part, the chute extended along its circumference is provided with in described first mounting hole, described chute has the 3rd blocked part and the 4th blocked part, described projection is located in described chute slidably, and described in the first cooperation position, the first blocked part and described 3rd blocked part are only supported and the second blocked part and described 4th blocked part are only supported mutually described in the second cooperation position mutually.
4. the link assembly for compressor according to claim 3, it is characterized in that, the number of described projection is that multiple and along described outer joint circumference is uniform, and the number of described chute is that multiple and along described first mounting hole circumference distributes, described chute and described projection one_to_one corresponding.
5. the link assembly for compressor according to claim 3, it is characterized in that, the mounting groove for inserting for described projection is also provided with in described first mounting hole, described mounting groove extends inwardly to crossing with described chute from one end of described first mounting hole, and the shape of described mounting groove is consistent with the shape of described projection.
6. the link assembly for compressor according to claim 3, it is characterized in that, the sidepiece of described chute and the sidepiece of described projection suitable, described first and second blocked parts are two end faces of described projection and the radial direction along described outer joint extends, and the described 3rd and the 4th blocked part is two end faces of described chute and the radial direction along described first mounting hole extends.
7. the link assembly for compressor according to any one of claim 1-6, it is characterized in that, described eccentric connector is the axle sleeve of annular, described annular sleeve has the outer wall of annular and the eccentric inner hole of relatively described outer wall eccentric setting, described eccentric inner hole is formed as described interior joint, and described outer wall is formed as described outer connector.
8. the link assembly for compressor according to claim 7, is characterized in that, the eccentric inner hole surface of described axle sleeve is provided with wearing layer.
9. a piston compressor, is characterized in that, comprising:
Motor;
Crankcase, is provided with bent axle in described crankcase, and described motor is connected to drive described crank rotation with the input end of described bent axle, and the output terminal of described bent axle has eccentric journal;
Link assembly according to any one of claim 1-8, described eccentric journal is connected pivotly with described interior joint;
Piston, the second mounting hole of described connecting rod is connected pivotly with described piston;
Cylinder block, in described cylinder block, there is active chamber, described piston is located in described active chamber slidably, when described piston is in the dead-centre position of exhaust stroke, limit clearance between the end of described piston and described cylinder block, clearance when described outer joint is in the first cooperation position is less than clearance when described outer joint is in the second cooperation position.
10. piston compressor according to claim 9, is characterized in that, when described outer joint switches between the first cooperation position and the second cooperation position, described clearance increases gradually.
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| CN201510444220.8A CN105065229B (en) | 2015-07-23 | 2015-07-23 | Link assembly for compressor and the piston compressor with which |
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| CN201510444220.8A CN105065229B (en) | 2015-07-23 | 2015-07-23 | Link assembly for compressor and the piston compressor with which |
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| CN105065229A true CN105065229A (en) | 2015-11-18 |
| CN105065229B CN105065229B (en) | 2017-03-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN106988992A (en) * | 2017-05-27 | 2017-07-28 | 安徽美芝制冷设备有限公司 | The compression mechanism and reciprocating compressor of reciprocating compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106678017A (en) * | 2017-02-14 | 2017-05-17 | 安徽美芝制冷设备有限公司 | Reciprocating compressor and refrigerator with same |
| CN106678017B (en) * | 2017-02-14 | 2019-03-12 | 安徽美芝制冷设备有限公司 | Reciprocating compressor and refrigerator with it |
| CN106988993A (en) * | 2017-05-27 | 2017-07-28 | 安徽美芝制冷设备有限公司 | The linkage and compressor of compressor |
| CN106988992A (en) * | 2017-05-27 | 2017-07-28 | 安徽美芝制冷设备有限公司 | The compression mechanism and reciprocating compressor of reciprocating compressor |
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| Publication number | Publication date |
|---|---|
| CN105065229B (en) | 2017-03-29 |
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