CN1566636A - Locking device for dual capacity compressor - Google Patents
Locking device for dual capacity compressor Download PDFInfo
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- CN1566636A CN1566636A CN 03148020 CN03148020A CN1566636A CN 1566636 A CN1566636 A CN 1566636A CN 03148020 CN03148020 CN 03148020 CN 03148020 A CN03148020 A CN 03148020A CN 1566636 A CN1566636 A CN 1566636A
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Abstract
The invention is about a locking device of double capacity compressor, after the eccentric sleeve rotates to a right position relative to centrifugal fin along the crankshaft, it will rotate with the centrifugal fin. On the eccentric sleeve, a centrifugal weight part is arranged which can generate centrifugal force by the crankshaft; on the centrifugal pin, a clocking pin is arranged; and on the eccentric sleeve, a hanging-joint end is arranged which can hang the locking pin. on the centrifugal pin, a joint lever is arranged which can transfer the rotary force from the crankshaft to the piston, and on the joint lever, the eccentric sleeve is mounted. On the through hole inner round surface of the eccentric sleeve, a buffer liner with buffer function between the eccentric sleeve and centrifugal pin is pressed in; or on the outer round surface of the centrifugal pin, a buffer ring is mounted, which can be made slide relative to the inner round surface of the eccentric sleeve. The buffer liner is made of nonferrous metal or high molecular material, and can reduce the noise and vibration between the eccentric sleeve and centrifugal pin.
Description
Technical field
The present invention relates to the hermetic type compressor in a kind of mechanical engineering field fluid varactor machine, particularly relate to and a kind ofly can change the stroke distances of piston, thereby can change the blocking device (Latching mechanism of dualcapacity compressor) of the double capacity compressor of compression volume according to the sense of rotation of crankshaft.
Background technique
Double capacity compressor is meant that the sense of rotation change according to crankshaft is connected in the stroke distances of the piston of crankshaft by connecting rod, thereby can changes a kind of compressor of operation type back and forth of compression volume.The compressor of this double-capacity used in the freezing device as cycles such as refrigerators, adjusted compression volume according to the size of freezing load, thereby can improve the working efficiency of compressor.
Above-mentioned existing double capacity compressor has U. S. Patent 4,236,874 etc.Below with reference to Fig. 1 and Fig. 2 its structure is described.
See also Fig. 1, shown in Figure 2, Fig. 1 is the blocking device sectional drawing according to the existing double capacity compressor of prior art, and Fig. 2 is the blocking device movement state diagram according to the existing double capacity compressor of prior art.
As shown in Figure 1 and Figure 2, on the crankshaft 1 that the rotor with motor section together rotates, be provided with the eccentric part 3 that departs from rotating center 1a.Symbol 3a is the eccentric part center among the figure.
At the outer circumferential face of above-mentioned eccentric part 3, be provided with an eccentric adjusting sleeve 4 around formation.Above-mentioned eccentric adjusting sleeve 4 is made up of the first eccentric part 4a and the second eccentric part 4b, and first above-mentioned eccentric part 4a and the formed inner circular part of the second eccentric part 4b (circles at above-mentioned eccentric part 4 places) are for deviating from the center of eccentric adjusting sleeve 4 self.Here, the inner circular part of above-mentioned eccentric adjusting sleeve 4 is for more approaching the second above-mentioned eccentric part 4b, shown in its planimetric map, the distance of the inner circular part that the outer circumferential face distance of the first above-mentioned eccentric part 4a is above-mentioned is relatively large, and the distance of the above-mentioned inner circular part of the outer circumferential face of second eccentric part 4b distance is less relatively.Above-mentioned eccentric adjusting sleeve 4 is that eccentric part center 3a with top eccentric part 3 is as its rotating center.
On above-mentioned eccentric part 3, be connected with connecting rod 5, between the inner peripheral surface of above-mentioned connecting rod 5 and above-mentioned eccentric part 3, install and be provided with above-mentioned eccentric adjusting sleeve 4.Here, in the side of above-mentioned eccentric part 3 with 4 contact segments of eccentric adjusting sleeve, along the outer circumferential face of eccentric part 3 and the inner peripheral surface of eccentric adjusting sleeve 4 first eccentric part 4a, formation is provided with the dashpot 11,12 that possesses certain-length, run through above-mentioned dashpot 11,12 then installation be provided with and can prevent between above-mentioned eccentric part 3 and the eccentric adjusting sleeve 4 to a certain degree above counterrotating self-lock pin 6.
Above-mentioned connecting rod 5 is connected in the piston 7 that is arranged at above-mentioned cylinder 8 inside, thereby the straight line that the rotation of above-mentioned crankshaft 1 converts above-mentioned piston 7 to is moved back and forth.The big end footpath 5 ' of above-mentioned connecting rod 5 is socketed on the eccentric part 3 of above-mentioned crankshaft 1 under above-mentioned eccentric adjusting sleeve 4 is situated between the state of portion within it.
In the blocking device of the existing double capacity compressor that possesses said structure, by adjust the stroke distances of piston 7 with respect to the motion of the eccentric adjusting sleeve 4 of the center 3a rotation of the eccentric part 3 of crankshaft 1; As shown in Figure 2, when freezing load is big, makes crankshaft 1 along the clockwise direction rotation, and when freezing load is little, make crankshaft 1 along rotation counterclockwise.
That is to say that A among Fig. 2 and B make crankshaft 1 along right handed situation for being illustrated in jumbo the time, wherein A is the situation of piston when being at the highest notch, and B is the situation of piston when being in minimum point.And at this moment, because offset reaches maximum, so its stroke distances L also becomes maximum.
C among Fig. 2 and D make crankshaft 1 along the situation of rotation counterclockwise when being illustrated in small capacity, wherein C is the situation of piston when being in minimum point, and D is the situation of piston when being at the highest notch.At this moment, because offset reaches minimum, so its stroke distances L ' also becomes minimum.
At this moment, above-mentioned self-lock pin 6 is when the sense of rotation of crankshaft 1 is changed, in above-mentioned dashpot 11,12, change its position with the relative rotation of eccentric adjusting sleeve 4, thereby can fix the relative position between above-mentioned eccentric part 3 and the eccentric adjusting sleeve 4 according to above-mentioned eccentric part 3.
But the blocking device that possesses the existing double capacity compressor of said structure has following problem:
In said structure, whole self-lock pin 6 is to be provided with to be positioned at above-mentioned dashpot 11,12, so the inner side surface of its outer circumferential face and above-mentioned dashpot 11,12 rubs, thus wearing and tearing easily, and then the generation entrance loss.
In addition, between above-mentioned eccentric adjusting sleeve 4 and eccentric part 3, form for the relative rotation of setting its position and to be provided with certain clearance, but because this gap, and make when compressor operating, eccentric adjusting sleeve 4 and eccentric part 3 collision mutually also produce noises.
This shows that the blocking device of above-mentioned existing double capacity compressor still has many defectives, and demands urgently further being improved.
The problem that exists for the blocking device that solves above-mentioned double capacity compressor, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that the blocking device of above-mentioned existing double capacity compressor exists, the inventor is based on being engaged in this type of product specification manufacturing abundant for many years practical experience and professional knowledge, actively studied innovation, blocking device in the hope of the double capacity compressor of founding a kind of new structure, can improve the blocking device of general existing double capacity compressor, make it have more practicability.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
Main purpose of the present invention is, overcome the existing defective of blocking device of above-mentioned existing double capacity compressor, and provide a kind of blocking device of double capacity compressor of new structure, technical problem underlying to be solved is to make it have and can reduce noise to greatest extent according to the sense of rotation of crankshaft on the double capacity compressor of the self-lock pin of desirable fixed-site eccentric adjusting sleeve possessing.
Purpose of the present invention and to solve its technical problem underlying be to adopt following technological scheme to realize.The blocking device of a kind of double capacity compressor that proposes according to the present invention, it comprises with lower member and being formed: setting is positioned at by on the crankshaft of motor section driven rotary, and deviates from the rotating center of above-mentioned crankshaft and the eccentric part that rotates; Eccentric thereon formation is provided with the through hole that above-mentioned eccentric part is connected, and is provided with eccentric part and insert in this through hole, and carries out the eccentric adjusting sleeve of one rotation with respect to above-mentioned eccentric part along the sense of rotation of crankshaft; An end is connected in above-mentioned eccentric part under the state that is fixed in above-mentioned eccentric adjusting sleeve centre, and the other end is connected in piston, thereby rotatablely moving of above-mentioned crankshaft can be converted to the connecting rod of the straight reciprocating motion of piston; Have at least an end to connect above-mentioned eccentric part, thereby convex to form outside in eccentric part, and can make the rotation of the above-mentioned eccentric adjusting sleeve that is undertaken by centrifugal action stop at certain location, thereby can make eccentric part and eccentric adjusting sleeve carry out the latch pin of one rotation; And be installed between above-mentioned eccentric part and the eccentric adjusting sleeve, and can between eccentric part and eccentric adjusting sleeve, play the buffer unit of buffer function.
The object of the invention to solve the technical problems can also be further achieved by the following technical measures.
The blocking device of aforesaid double capacity compressor, wherein said buffer unit is formed in the buffer bush with respect to the cylindrical shape of the whole slide groove portion between above-mentioned eccentric adjusting sleeve and the eccentric part.
The blocking device of aforesaid double capacity compressor, wherein said buffer bush are pressed into the centrifugal hole inner face to above-mentioned eccentric adjusting sleeve.
The blocking device of aforesaid double capacity compressor, wherein said buffer unit are arranged on the buffering ring on the mounting groove that forms around the outer circumferential face of above-mentioned eccentric part.
The blocking device of aforesaid double capacity compressor, wherein said buffer unit, it is installed on the eccentric part outer circumferential face with respect to the top and bottom, big end footpath of above-mentioned connecting rod.
The blocking device of aforesaid double capacity compressor, wherein said buffer unit is made by nonferrous metal or macromolecular material.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technological scheme as can be known, in order to reach aforementioned goal of the invention, major technique of the present invention thes contents are as follows:
The blocking device of the double capacity compressor that the present invention proposes, it is eccentric adjusting sleeve rotates to tram with respect to centrifugal fin along the sense of rotation of crankshaft after, together rotates with the centrifugal fin of crankshaft.On eccentric adjusting sleeve, be provided with the centrifugal weight portion that can produce centrifugal force by the rotation of crankshaft; On centrifugal fin, install and be provided with lockweight; On eccentric adjusting sleeve, form and be provided with the articulated end that can hang above-mentioned lockweight.On centrifugal fin, form and be provided with the connecting rod that the rotating force of above-mentioned crankshaft can be delivered to piston, install thereon and be provided with above-mentioned eccentric adjusting sleeve.Through hole inner peripheral surface at eccentric adjusting sleeve is pressed into buffer bush, and buffer bush can play buffer function between eccentric adjusting sleeve and centrifugal fin; Perhaps buffering ring is installed, it can be slided with respect to the inner peripheral surface of eccentric adjusting sleeve at the outer circumferential face of above-mentioned centrifugal fin.Above-mentioned buffer bush and buffering ring are to be made by nonferrous metal or macromolecular material, can reduce the noise and the vibration that produce between eccentric adjusting sleeve and the centrifugal fin to greatest extent.
From the above, the blocking device of double capacity compressor of the present invention in order to prevent the conflict between counterrotating eccentric adjusting sleeve and the centrifugal fin, forms buffer bush or buffering ring at the through hole inner peripheral surface of above-mentioned eccentric adjusting sleeve or the outer circumferential face of centrifugal fin.Therefore,, can between centrifugal fin and eccentric adjusting sleeve, play buffer function, thereby can absorb the vibration in mutual when collision, and can effectively reduce noise as the buffer bush or the buffering ring of buffer bush.The blocking device of compressor that possesses the double-capacity of said structure can provide the blocking device of input that need be relatively little, also can reduce the noise that bump produced between eccentric adjusting sleeve and the self-lock pin to greatest extent.
In sum, the blocking device of the double capacity compressor of special construction of the present invention, mainly have and according to the sense of rotation of crankshaft on the double capacity compressor of the self-lock pin of desirable fixed-site eccentric adjusting sleeve, can reduce noise to greatest extent possessing.It has above-mentioned many advantages and use value, and in like product, do not see have similar structural design to publish or use, no matter and it structurally or bigger improvement all arranged on the function, have large improvement technically, and produced handy and practical effect, and have the effect of enhancement really, thus be suitable for practicality more, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.
Description of drawings
Fig. 1 is the blocking device sectional drawing according to the existing double capacity compressor of prior art.
Fig. 2 is the blocking device movement state diagram according to the existing double capacity compressor of prior art.
Fig. 3 is the schematic perspective view according to an embodiment of double capacity compressor of the present invention.
Fig. 4 is the section of structure according to an embodiment of the double capacity compressor of being invented.
Fig. 5 a is the floor map of the eccentric adjusting sleeve of one embodiment of the invention.
Fig. 5 b is the side schematic view of the eccentric adjusting sleeve of one embodiment of the invention.
Fig. 6 a is the operating state schematic representation one according to one embodiment of the invention.
Fig. 6 b is the operating state schematic representation two according to one embodiment of the invention.
Fig. 7 is the section of structure of another embodiment of the present invention.
1 ... ... crankshaft 1a ... rotating center
3a......... eccentric part center 4......... eccentric adjusting sleeve
4a......... the first eccentric part 4b ... second eccentric part
5 ... ... connecting rod 6......... latch pin
7 ... ... piston 8......... cylinder
11......... dashpot 12 ... dashpot
20......... frame 22 ... motor section
24......... cylinder 26 ... piston
30......... crankshaft 31 ... oil groove
32......... centrifugal fin 33 ... statocone
34......... eccentric adjusting sleeve 35 ... through hole
36......... centrifugal weight portion 37 ... protrude rib
37a ... articulated end 37b ... articulated end
38......... latch pin 39 ... braking part
40......... case spring 42 ... connecting rod
43......... big end footpath 44 ... top end diameter
45......... wrist pin 31 ' ... grease channel
50......... buffer bush 60 ... buffering ring
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, its embodiment of blocking device, structure, feature and the effect thereof of the double capacity compressor that foundation the present invention is proposed, describe in detail as after.
See also Fig. 3, Fig. 4, Fig. 5, shown in Figure 6, Fig. 3 is the schematic perspective view according to an embodiment of double capacity compressor of the present invention, Fig. 4 is the section of structure according to an embodiment of the double capacity compressor of being invented, Fig. 5 a, Fig. 5 b are the plane and the side schematic views of the eccentric adjusting sleeve of one embodiment of the invention, and Fig. 6 is the operating state schematic representation according to one embodiment of the invention.
As shown in the figure, the blocking device of the double capacity compressor of preferred embodiment of the present invention, it is in the inside of the seal container (not shown) that forms the compressor outward appearance, installs and is provided with frame 20; In the bottom of above-mentioned frame 20, install and be provided with motor section 22.Above-mentioned motor section 22 is made up of with the central authorities that are installed on fixture and by the rotor that the mutual electric field action with fixture is rotated the fixture that is fixed in above-mentioned frame 20.
Side in above-mentioned frame 20 is provided with cylinder 24, and in the inside of said cylinder 24, that is, pressing chamber is installed to be provided with and can be carried out the piston 26 that straight line moves back and forth; One side of the above-mentioned frame 20 of up/down perforation is installed and is provided with crankshaft 30; The underpart of above-mentioned crankshaft 30 is pressed into the rotor and the one that are connected to above-mentioned motor section 22 and is rotated; Symbol 31 is an oil groove 31 among the figure.Symbol 31 ' is a grease channel 31 ' among the figure.
In the upper end portion of above-mentioned crankshaft 30,, install and be provided with centrifugal fin 32 in the position of departing from crankshaft 30 rotating centers; In order to solve the unbalanced problem of rotation of the crankshaft 30 that is taken place because of above-mentioned centrifugal fin 32, on above-mentioned crankshaft 30, install and be provided with statocone 33.
Eccentric adjusting sleeve 34 cylindrical shapes connect the position (shown in Fig. 4, Fig. 5 a, Fig. 5 b) that being centered close to of its inner through hole 35 deviates from eccentric adjusting sleeve 34 self center.Therefore, at the inner side surface of the through hole 35 of above-mentioned eccentric adjusting sleeve 34, respectively do for oneself different with the thickness between the outer circumferential face of eccentric adjusting sleeve 34; And at this moment, on the position of looking relatively of through hole 35, the thickest part of formation and the thinnest part are set are advisable.Above-mentioned eccentric adjusting sleeve 34 is to be mounted on the centrifugal fin 32 by above-mentioned centrifugal fin 32 is plugged above-mentioned through hole 35.And the height of above-mentioned eccentric adjusting sleeve 34 will be lower than the height of above-mentioned centrifugal fin 32.
In the upper end of above-mentioned eccentric adjusting sleeve 34,, form and to be provided with than the external diameter of this eccentric adjusting sleeve 34 more to the centrifugal weight portion 36 of outer lug along its center of circle direction; This centrifugal weight portion 36 is roughly rounded and be set to have certain thickness platy structure, and, form above-mentioned eccentric adjusting sleeve 34 deviating to be provided with on the position at its center.
The effect of above-mentioned centrifugal weight portion 36 is the centrifugal force that the turning effort by above-mentioned crankshaft 30 is produced, and acts on the eccentric adjusting sleeve 34, thereby can make eccentric adjusting sleeve 34 rotate to desirable position; Above-mentioned centrifugal weight portion 36 can be integrally formed at the upper end of above-mentioned eccentric adjusting sleeve 34, also split production and being installed on the above-mentioned eccentric adjusting sleeve 34 separately.If split production centrifugal weight portion 36 separately can be pressed into to eccentric adjusting sleeve 34 or utilizes latching fixedly to become one.
Shown in Fig. 3, Fig. 5 a,, form at the upper end of above-mentioned eccentric adjusting sleeve 34 offset and to protrude rib 37 in order more to protrude than the top of above-mentioned centrifugal weight portion 36.This protrusion rib 37 is the plane shape corresponding to above-mentioned eccentric adjusting sleeve 34, and its angle of circumference also just forms in certain scope.At the two ends of above-mentioned protrusion rib 37, form and be provided with articulated end 37a, 37b; And this articulated end 37a, 37b are for hanging up following lockweight 38 parts that will illustrate.
Above-mentioned lockweight 38 is mounted on the above-mentioned centrifugal fin 32; And above-mentioned lockweight 38 is laterally to run through the upper end of above-mentioned centrifugal fin 32 and setting is installed, and the one end is protruding to the outside of above-mentioned centrifugal fin 32.The length of above-mentioned lockweight 38 is greater than the external diameter of above-mentioned centrifugal fin 32, and less than the external diameter of above-mentioned eccentric adjusting sleeve 34.Above-mentioned lockweight 38 is supported by case spring 40 in the inside of above-mentioned centrifugal fin 32.Therefore, in the ordinary course of things, above-mentioned lockweight 38 has only one of them end to protrude into the outside of above-mentioned centrifugal fin 32.In addition, under the situation that crankshaft 30 is rotated,, can overcome the elastic force of above-mentioned case spring 40, and make two end can both protrude into the outside of centrifugal fin 32 because be subjected to its action of centrifugal force.The braking part of symbol 39 for preventing that lockweight 38 breaks away from from centrifugal fin 32 among the figure.
An end of connecting rod 42, that is, big end footpath 43 is sheathed being connected on the above-mentioned centrifugal fin 32, and, be fixed with above-mentioned eccentric adjusting sleeve 34 thereon.At this moment, between the outer circumferential face of the inner side surface in above-mentioned big end footpath 43 and eccentric adjusting sleeve 34, form for above-mentioned two accessories can be rotated relatively and to be provided with certain clearance.The other end of above-mentioned connecting rod 42, that is, top end diameter 44 is connected in above-mentioned piston 26 by wrist pin 45.
In addition, buffer bush 50 is pressed into the through hole 35 to above-mentioned eccentric adjusting sleeve 34.In this example, as the vibration that produces between above-mentioned concentrator bowl 34 covers of buffering and the centrifugal wing 32 or the buffer bush 50 of impact, it is to be formed at respect to the moving portion of whole pleat between above-mentioned concentrator bowl 34 and the centrifugal fin 32 with drum.Above-mentioned buffer bush 50 is made by the macromolecular material of nonferrous metal such as aluminium or plastics, rubber, polytetrafluoroethylene etc. and is advisable.
In addition, Fig. 7 is another one embodiment of the present invention.In the present embodiment, at the outer circumferential face formation fixed groove 32 ' of above-mentioned centrifugal fin, and, go up fixedly buffering ring 60 at above-mentioned fixed groove 32 ', enable to carry out the slide relative motion with the inner peripheral surface of above-mentioned eccentric adjusting sleeve through hole.
The position of above-mentioned buffering ring 60, be positioned at position with respect to the top and bottom in above-mentioned connecting rod 42 big end footpaths 43, and during this to be pressure for the operation liquid that is applied to piston 26 make connecting rod 42 promotes above-mentioned eccentric adjusting sleeve 34, can support effectively that its buffer function forms.
Also macromolecular material such as nonmetal or plastics, rubber, polytetrafluoroethylene is made and is advisable above-mentioned buffering ring 60 by aluminium etc.
At this moment, above-mentioned buffering ring 60 also can be installed in through hole 35 aperture surfaces of above-mentioned eccentric adjusting sleeve 34.The symbol 31 ' that does not describe among the figure is a grease channel of giving the outer circumferential face supplying lubricating oil of centrifugal fin 32.
The working principle of blocking device that now possesses the double capacity compressor of the present invention of said structure is described in detail as follows:
In the present invention, above-mentioned crankshaft 30 can be according to the rotation of motor section 22 and can optionally in two directions be rotated.For example, shown in Fig. 6 a, if crankshaft 30 is along rotation counterclockwise, then above-mentioned centrifugal fin 32 can be the center formation circular trace of drawing with the rotating center of crankshaft 30.
In above-mentioned rotary course, above-mentioned eccentric adjusting sleeve 34 is subjected to the centrifugal action of above-mentioned centrifugal weight portion 36 and rotates to specific direction.Shown in Fig. 6 a, the rotation of above-mentioned eccentric adjusting sleeve 34 continues to above-mentioned lockweight 38 always and is mounted on (please shown in Figure 3 in conjunction with consulting) till above-mentioned articulated end 37a, the 37b.
In addition, as shown in Figure 4, above-mentioned lockweight 38, be to be for having only one end thereof to be protruding to the state of above-mentioned centrifugal fin 32 outsides, because be subjected to the action of centrifugal force that rotation produced of crankshaft 30, and can overcome the elastic force of case spring 40, make an original end that protrudes a little back pack up, the other end that does not originally have to protrude is then outwards protruded, thereby the two ends of formation lockweight 38 all are mounted on the state of above-mentioned articulated end 37a, 37b.
Be in after the above-mentioned state, the rotation that can become one with above-mentioned centrifugal fin 32 of above-mentioned eccentric adjusting sleeve 34, particularly, relative thicker part can be in the direction of above-mentioned piston 26 in the above-mentioned eccentric adjusting sleeve 34, and relatively thin part is the opposite direction that is centered close to above-mentioned piston 26 with centrifugal fin 32 then.That is to say that the through hole 35 of eccentric adjusting sleeve 34 is on above-mentioned piston 26 position far away.At this moment, the stroke distances of above-mentioned piston 26 will become longer relatively.
In addition, shown in Fig. 6 b, be along clockwise direction rotation if crankshaft 30 is subjected to the effect of motor section 22, above-mentioned centrifugal fin 32 can be the center formation circular trace of drawing with the rotating center of crankshaft 30.
In above-mentioned rotary course, above-mentioned eccentric adjusting sleeve 34 is subjected to the centrifugal action of above-mentioned centrifugal weight portion 36 and upwards states bright opposite spin.Shown in Fig. 6 b, the rotation of above-mentioned eccentric adjusting sleeve 34 will continue to until the two ends of above-mentioned lockweight 38 are mounted on till above-mentioned articulated end 37a, the 37b.
In addition, as shown in Figure 4, above-mentioned lockweight 38, be to be to have only an end to be protruding to the state of above-mentioned centrifugal fin 32 outsides, because be subjected to the action of centrifugal force that rotation produced of crankshaft 30, and can overcome the elastic force of case spring 40, make an original end that protrudes a little back pack up, the other end that does not originally have to protrude then outwards protrudes, thereby the two ends of formation lockweight 38 all are mounted on the state of above-mentioned articulated end 37a, 37b.
Be in after the above-mentioned state, above-mentioned eccentric adjusting sleeve 34 can with the rotation that becomes one of above-mentioned centrifugal fin 32, particularly, relatively thin part can be in the direction of above-mentioned piston 26 in the above-mentioned eccentric adjusting sleeve 34, and thicker relatively part is the opposite direction that is centered close to above-mentioned piston 26 with centrifugal fin 32.That is to say that the through hole 35 of eccentric adjusting sleeve 34 is to be on the nearer position of above-mentioned piston 26.At this moment, the stroke distances of above-mentioned piston 26 will become shorter relatively.Certainly, can be according to the sense of rotation of above-mentioned crankshaft, the length of the stroke distances of piston also can be designed to the state of reverse direction operation.
As mentioned above, because the stroke distances that piston 26 forms can change according to the position of above-mentioned eccentric adjusting sleeve 34, so can change capacity by piston 26 compressed liquids.
In said process, above-mentioned buffer bush 50 carries out sliding movement with respect to above-mentioned centrifugal fin 32, and plays buffer function between centrifugal fin 32 and eccentric adjusting sleeve 34, the vibration and the noise that are produced in the time of therefore can effectively absorbing collision.
In addition, seeing also shown in Figure 7ly, is the section of structure of another embodiment of the present invention.Structure in the present embodiment also is like this, that is to say that above-mentioned buffering ring 60 is installed on the fixed groove 32 ' of above-mentioned centrifugal wing 32, and make above-mentioned buffering ring 60 carry out sliding movement with respect to through hole 35 inner peripheral surfaces of above-mentioned eccentric adjusting sleeve 34, and between centrifugal fin 32 and eccentric adjusting sleeve 34, play buffer function, and reduce noise and vebrato with this.
Particularly, in the compressor operation process, the pressure that acts on the operation liquid of above-mentioned piston 26 makes connecting rod 42 when the traffic direction of above-mentioned eccentric adjusting sleeve 34 is exerted pressure, above-mentioned buffering ring 60 stops eccentric adjusting sleeves 34 and centrifugal fin 32 to be in contact with one another, thereby can reduce noise and the vibration that produces between the eccentric adjusting sleeve 34 and centrifugal fin 32 in the running.
The technological innovation of the blocking device of the double capacity compressor of the present invention that above-mentioned structure like this constituted all has many saving graces for technician of the same trade now, and the progressive that possesses skills really.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified to the equivalent embodiment of equivalent variations, but every technical solution of the present invention content that do not break away from,, all still belong in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.
Claims (6)
1, a kind of blocking device of double capacity compressor is characterized in that it comprises with lower member to be formed:
Setting is positioned at by on the crankshaft of motor section driven rotary, and deviates from the rotating center of above-mentioned crankshaft and the eccentric part that rotates;
Eccentric thereon formation is provided with the through hole that above-mentioned eccentric part is connected, and is provided with eccentric part and insert in this through hole, and carries out the eccentric adjusting sleeve of one rotation with respect to above-mentioned eccentric part along the sense of rotation of crankshaft;
An end is connected in above-mentioned eccentric part under the state that is fixed in above-mentioned eccentric adjusting sleeve centre, and the other end is connected in piston, thereby rotatablely moving of above-mentioned crankshaft can be converted to the connecting rod of the straight reciprocating motion of piston;
Have at least an end to connect above-mentioned eccentric part, thereby convex to form outside in eccentric part, and can make the rotation of the above-mentioned eccentric adjusting sleeve that is undertaken by centrifugal action stop at certain location, thereby can make eccentric part and eccentric adjusting sleeve carry out the latch pin of one rotation; And
Be installed between above-mentioned eccentric part and the eccentric adjusting sleeve, and can between eccentric part and eccentric adjusting sleeve, play the buffer unit of buffer function.
2, the blocking device of double capacity compressor according to claim 1 is characterized in that wherein said buffer unit is formed in the buffer bush with respect to the cylindrical shape of the whole slide groove portion between above-mentioned eccentric adjusting sleeve and the eccentric part.
3, the blocking device of double capacity compressor according to claim 2 is characterized in that wherein said buffer bush is pressed into the centrifugal hole inner face to above-mentioned eccentric adjusting sleeve.
4, the blocking device of double capacity compressor according to claim 1 is characterized in that wherein said buffer unit is arranged on the buffering ring on the mounting groove that forms around the outer circumferential face of above-mentioned eccentric part.
5, the blocking device of double capacity compressor according to claim 4 is characterized in that wherein said buffer unit, and it is installed on the eccentric part outer circumferential face with respect to the top and bottom, big end footpath of above-mentioned connecting rod.
6, according to the blocking device of the described double capacity compressor of arbitrary claim in the claim 1 to 5, it is characterized in that wherein said buffer unit, make by nonferrous metal or macromolecular material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03148020 CN1566636A (en) | 2003-06-26 | 2003-06-26 | Locking device for dual capacity compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03148020 CN1566636A (en) | 2003-06-26 | 2003-06-26 | Locking device for dual capacity compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1566636A true CN1566636A (en) | 2005-01-19 |
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ID=34472155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03148020 Pending CN1566636A (en) | 2003-06-26 | 2003-06-26 | Locking device for dual capacity compressor |
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| Country | Link |
|---|---|
| CN (1) | CN1566636A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106743199A (en) * | 2017-01-24 | 2017-05-31 | 昕迪精密机械（东莞）有限公司 | A kind of rotary conveying mechanism |
-
2003
- 2003-06-26 CN CN 03148020 patent/CN1566636A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106743199A (en) * | 2017-01-24 | 2017-05-31 | 昕迪精密机械（东莞）有限公司 | A kind of rotary conveying mechanism |
| CN106743199B (en) * | 2017-01-24 | 2022-09-06 | 昕迪精密机械（东莞）有限公司 | Rotary conveying mechanism |
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