CN217926201U - Vibration reduction and energy storage refrigeration compressor crankshaft structure - Google Patents
Vibration reduction and energy storage refrigeration compressor crankshaft structure Download PDFInfo
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- CN217926201U CN217926201U CN202221133005.8U CN202221133005U CN217926201U CN 217926201 U CN217926201 U CN 217926201U CN 202221133005 U CN202221133005 U CN 202221133005U CN 217926201 U CN217926201 U CN 217926201U
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Abstract
The utility model discloses a vibration damping energy storage refrigeration compressor crankshaft structure, which comprises a crankshaft, wherein a balance disc is arranged on the crankshaft, a chute is arranged in the balance disc, the chute is arranged in a non-radial manner, at least one sliding body is arranged in the chute along the length direction of the chute, and at least one end of the chute is provided with an elastic element; this bent axle structure is through set up the spout on the balance disk to set up sliding body and elastic element in the spout, can utilize elastic element to carry out energy storage, sliding body regulation motion equilibrium nature, make the bent axle can compensate energy inhomogeneity and the motion imbalance that the focus skew brought at rotatory in-process, thereby promoted bent axle motion's stability, reduced the vibration, improved the efficiency of compressor.
Description
Technical Field
The utility model relates to compressor crankshaft technical field, concretely relates to damping energy storage compressor crankshaft structure.
Background
The reciprocating piston refrigeration compressor has four processes during working: the air compressor has the advantages that the resistance is large during air suction, compression, air exhaust and expansion, the rotating speed is low, the resistance is low during expansion and air suction of the compressor, the rotating speed is high, and large pressure fluctuation exists in the process. A crankshaft structure frequently used in a piston type refrigeration compressor, for example, a crankshaft of a novel oil groove structure disclosed in Chinese utility model patent (publication number: CN 215566472U), a balance disc is arranged on the crankshaft, the balance disc is usually a complete fan-shaped block, the reciprocating inertia mass and the mass center distance of the crankshaft of the structure are constant, and energy nonuniformity and movement nonuniformity in the suction and exhaust processes cannot be compensated.
The Chinese utility model patent (publication number: CN 209278134U) discloses a vibration reduction balancing piece, the barycenter of vibration reduction balancing piece sets up for the rotation center line is eccentric, and the vibration reduction balancing piece includes mount pad, elastic damping unit and counter weight unit, elastic damping unit connects in the mount pad outside, counter weight unit connect in the elastic damping unit outside. This bent axle offsets the rotatory unbalance force that produces of bent axle through the balancing piece, utilize the resonance of the dynamic vibration absorbing structure that elastic damping unit and counter weight unit constitute in the balancing piece to reach the purpose of consuming the vibration energy, but this kind of unbalance force is mainly the centrifugal force that produces in the rotatory in-process of balancing piece, and the unbalance force and the loss of energy that the bent axle produced because of high low-speed change in the compressor suction and exhaust power application process, this kind of radial elastic damping unit and counter weight unit of arranging still adjust the radial balance of balancing piece based on the counter weight, and the balancing piece needs to set up in the periphery, and is bulky, occupy limited compressor inner space, be unfavorable for the compact miniaturization of cylinder block and internal motor and arrange.
Disclosure of Invention
The utility model aims at providing a damping energy storage compressor crankshaft structure to the problem that prior art exists.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a damping energy storage compressor crankshaft structure, includes the bent axle, be equipped with the balance plate on the bent axle, set up the spout in the balance plate, the non-radial setting of spout, follow in the spout length direction is equipped with a sliding body at least, the at least one end of spout is equipped with elastic element.
The movement direction of the sliding body is not the radial line direction of the balance disc, the vibration frequency formed by the sliding body and the elastic element is f, and the rotation frequency of the refrigeration compressor is f 0 F =75% to 125% 0 ，f 0 Also the number of revolutions per second of the reciprocating piston compressor.
If the length of the sliding groove is a, the total length of the sliding body in the length direction is b, and the total length of the elastic element in the sliding groove in the relaxed state is c, then 0.5a < (b + c) < a.
This bent axle structure is through set up the spout on the balance disk to set up sliding body and elastic element in the spout, can utilize elastic element to carry out energy storage, sliding body regulation motion equilibrium nature, make the bent axle can compensate energy inhomogeneity and the motion imbalance that the focus skew brought at rotatory in-process, thereby promoted bent axle motion's stability, reduced the vibration, improved the efficiency of compressor. In addition, the structure does not need to arrange redundant parts on the periphery of the balance disc, and does not occupy the original internal space of the compressor.
When the crankshaft rotates to enable the piston to compress gas and exhaust gas, the resistance is large, the rotating speed of the crankshaft is reduced, the sliding body has inertia, and the mass center is deviated to the direction of the elastic element so as to compensate the movement imbalance caused by the reduction of the rotating speed; when the compressor expands and inhales air, the rotation resistance of the crankshaft is low, the rotating speed is high, the sliding body also has inertia, and the mass center of the sliding body is deviated to a direction far away from the elastic element so as to balance instability caused by sudden high rotating speed.
The sliding body can slide in the sliding groove along with the rotation of the crankshaft, and because the sliding body is not fixed, the movement of the sliding body is relatively free, when the speed of the crankshaft, namely the balance disc, changes suddenly in the rotation process, the sliding body generates inertia, or accelerates or decelerates one beat, the inertia is generated in the balance disc, and the inertia influences and adjusts the movement balance of the balance disc, namely the crankshaft; the energy storage and release functions of the elastic element are matched, so that the inertia force and the energy generated by the sliding body can be absorbed or released, and the nonuniformity of the energy in the motion process of the balance disc can be adjusted.
Although the sliding body is not provided with hard limit positions on two sides of the sliding groove in the length direction, the sliding body is provided with a limit position in the width direction, namely the radial direction of the balance disc, and the sliding body does not swing in the radial direction, so that the direction of the generated inertia force is better in direction, and the collision in the radial direction is avoided.
Furthermore, the elastic element is a spring, a tension spring or a rubber elastic column, a mounting hole is formed in the end of the sliding groove, and one end of the elastic element is mounted in the mounting hole while the other end of the elastic element is a free end. The installation hole is arranged to facilitate the fixed installation of the elastic element,
furthermore, the spout sets up the up end of balance plate, be equipped with on the spout with the closing cap of balance plate detachable connection. The arrangement of the sealing cover can protect the sliding body and the elastic element on one hand, and can prevent the sliding body from moving upwards on the other hand, so that the sliding body is prevented from being separated from the sliding groove.
Further, the sliding groove is perpendicular to the strip-shaped sliding groove of the middle bisector of the balance disc, the sliding body is a strip-shaped sliding block, and two sides of the strip-shaped sliding block in the width direction are respectively in sliding butt joint with the inner wall of the strip-shaped sliding groove.
The motion direction of the sliding body is not the radial line direction of the balance disc, and when the sliding body is a strip-shaped straight sliding block, the reciprocating motion direction of the sliding body is vertical to the rotating radius direction of the crankshaft; when the sliding body is a fan-shaped sliding block or a ball, the tangent line of the moving direction of the sliding body is vertical to the rotating radius direction of the crankshaft.
Further, a connection line (in the same rotation plane) between the center point of the sliding body and the rotation center point of the crankshaft and the movement direction angle of the sliding body are as follows: 65-115 degrees.
Furthermore, the sliding groove is an arc-shaped groove, the arc-shaped groove and the balance disc are concentrically arranged or the coaxiality of the arc-shaped groove and the balance disc is less than 10mm, and the sliding body is a fan-shaped sliding block.
Further, the sliding body is a plurality of balls which are sequentially arranged in the sliding groove.
Furthermore, the ball is a solid metal ball, and the periphery of the solid metal ball is wrapped with an elastic buffer layer. Rigid collision between adjacent balls is avoided, and noise and vibration can be reduced.
Furthermore, the bottom of the sliding groove is provided with a limiting groove which is arranged along the length direction of the sliding groove, and the limiting groove is arranged along the movement direction to have guiding and limiting functions, so that the sliding body can slide in the rotation direction; an oil passage is further arranged in the balance disc, one end of the oil passage is communicated with the sliding groove, the other end of the oil passage is communicated with an oil passage on the crankshaft, and a part of lubricating oil in the crankshaft can enter the sliding groove due to the arrangement of the oil passage, so that a good lubricating effect is achieved between the sliding body and the sliding groove, the friction resistance is reduced, and the sliding movement effect is improved.
Further, the machining and assembling method of the crankshaft structure of the vibration-damping energy-storage refrigeration compressor comprises the following steps of machining the sliding grooves on the balance disc, wherein the sliding grooves are arranged in a non-radial mode, and corresponding sliding bodies are machined according to the shapes of the sliding grooves; and mounting holes are respectively processed at two ends of the sliding chute, one end of an elastic element is fixedly mounted in the mounting holes, and finally a sealing cover is mounted on the sliding chute and fixed in a screwing or riveting mode.
Compared with the prior art, the beneficial effects of the utility model are that: 1. according to the crankshaft structure, the sliding grooves are formed in the balance disc, the sliding bodies and the elastic elements are arranged in the sliding grooves, energy can be stored by the elastic elements, and the sliding bodies can be used for adjusting the motion balance, so that the crankshaft can compensate energy nonuniformity and motion nonuniformity caused by gravity center shift in the rotating process, the motion stability of the crankshaft is improved, vibration is reduced, and the efficiency of a compressor is improved; 2. when the crankshaft rotates to enable the piston to compress gas and exhaust gas, the resistance is large, the rotating speed of the crankshaft can be reduced, the sliding body has inertia, and the mass center can be deviated to the direction of the elastic element; when the compressor expands and inhales, the rotating resistance of the crankshaft is low, the rotating speed is high, the sliding body also has inertia, and the mass center can deviate to the direction far away from the elastic element; the energy unevenness and the motion unbalance generated by the reciprocating motion of the crankshaft are compensated through inertia in two directions; 3. the sliding body does not swing in the radial direction, and the movement direction of the sliding body is easier to control by matching with the arrangement of the sealing cover, so that the direction of the generated inertia force is better, and the collision in the radial direction is avoided; 4. the sliding groove and the sliding body do not bring adverse effect to the balance weight balance effect of the original balance disc, and the processing and assembling method is simple, easy to manufacture and capable of being popularized and used.
Drawings
Fig. 1 is a schematic perspective view of a crankshaft structure of a vibration damping and energy storage refrigeration compressor according to the present invention;
fig. 2 is a schematic perspective view of another crankshaft structure of a vibration damping and energy storing refrigeration compressor of the present invention;
fig. 3 is a schematic perspective view of another crankshaft structure of the vibration-damping and energy-storing refrigeration compressor of the present invention;
FIG. 4 is a schematic structural view of the ball of the present invention;
fig. 5 is another schematic structural view of the sliding chute of the present invention;
in the figure: 1. a crankshaft; 2. a balance disc; 3. a chute; 4. mounting holes; 5. an elastic element; 6. a sliding body; 7. an arc-shaped slot; 8. a sector-shaped sliding block; 9. a ball bearing; 10. an elastic buffer layer; 11. a limiting groove.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1, a crankshaft structure of a vibration-damping energy-storage refrigeration compressor comprises a crankshaft 1, wherein a balance disc 2 is arranged on the crankshaft 1, a sliding groove 3 is formed in the balance disc 2, the sliding groove 3 is arranged in a non-radial manner, at least one sliding body 6 is arranged in the sliding groove 3 along the length direction of the sliding groove, and at least one end of the sliding groove 3 is provided with an elastic element.
The sliding body 6 and the elastic element 5 form a vibration frequency f, i.e. the natural frequency between the sliding body 6 and the elastic element 5; the rotational frequency of the refrigeration compressor being f 0 F =75% to 125% 0 . When the sliding body is opposite toThe crankshaft is at such a frequency that the energy balance and motion balance effects are most pronounced.
Further, if the length of the sliding groove is a, the total length of the sliding body in the length direction is b, and the total length of the elastic element in the sliding groove in the relaxed state is c, then (b + c) is about 70% of a, so that the sliding body is in a reasonable stroke, and the elastic element has a proper energy storage and release space.
This bent axle structure is through set up spout 3 on the balancing disk 2 to set up slider 6 and elastic element 5 in spout 3, can utilize elastic element 5 to carry out the energy storage, slider 6 adjusts the motion equilibrium nature, make bent axle 1 can compensate energy inhomogeneity and the motion imbalance that the focus skew brought in rotatory in-process, thereby promoted the stability of bent axle motion, reduced the vibration, improved the efficiency of compressor.
When the crankshaft rotates to enable the piston to compress gas and exhaust gas, the resistance is large, the rotating speed of the crankshaft is reduced, the sliding body has inertia, and the mass center is deviated to the direction of the elastic element so as to compensate the movement imbalance caused by the reduction of the rotating speed; when the compressor expands and inhales air, the rotation resistance of the crankshaft is low, the rotating speed is high, the sliding body also has inertia, and the mass center of the sliding body is deviated to a direction far away from the elastic element so as to balance instability caused by sudden high rotating speed.
The sliding body 6 is able to slide in the sliding groove 3 following the rotation of the crankshaft 1, and since there is no fixing of the sliding body 6, the movement of the sliding body is relatively free, and when the speed of the crankshaft, i.e. the balance disc, changes suddenly during the rotation, the sliding body generates an inertia, or accelerates or decelerates, the existence of which is generated in the balance disc, which affects and adjusts the balance of the movement of the balance disc, i.e. the crankshaft; the energy storage and release functions of the elastic element are matched, so that the inertia force and the energy generated by the sliding body can be absorbed or released, and the nonuniformity of the energy in the motion process of the balance disc can be adjusted.
Although the sliding body 6 has no hard limit at both sides of the sliding groove 3 in the length direction, the sliding body 6 has a size limit in the width direction, namely the radial direction of the balance disc, and the sliding body 6 does not swing in the radial direction, so that the direction of the inertia force is better, and the collision in the radial direction is avoided.
Furthermore, the elastic element 5 is a spring, the end of the chute 3 is provided with a mounting hole 4, a cross connecting column is arranged in the mounting hole 4, one end of the spring is clamped and mounted on the cross connecting column, and the other end of the spring is a free end.
Further, the chute 3 is arranged on the upper end face of the balance disc 2, and the chute 3 is provided with a sealing cover detachably connected with the balance disc 2. The arrangement of the cover protects the slide 6 and the elastic element 5 on the one hand and also prevents the slide 6 from moving upwards and from leaving the chute 3 on the other hand.
The first embodiment is as follows:
as shown in fig. 1, the sliding groove 3 is a bar-shaped straight sliding groove perpendicular to the bisector of the balance disk 2, the sliding body 6 is a bar-shaped straight sliding block, and both sides of the bar-shaped straight sliding block in the width direction are respectively in sliding contact with the inner wall of the bar-shaped straight sliding groove.
Example two:
as shown in fig. 2, the sliding groove is an arc-shaped groove 7, the arc-shaped groove 7 is concentric with the balance disk 2, and the sliding body is a sector-shaped sliding block 8. The arc-shaped arrangement can increase the opening size of the sliding groove on one hand, and is more favorable for the fan-shaped sliding block 8 to do circumferential reciprocating motion on the other hand, so that the balancing effect is better.
When the sliding body is a strip-shaped straight sliding block or a fan-shaped sliding block, the sliding blocks are all solid metal blocks which are integrally formed, and the sliding blocks have stable inertia momentum.
Example three:
the elastic elements 5 are respectively installed at two ends of the sliding chute 3, so that the two ends of the sliding body 6 can contact the elastic elements in the reciprocating motion process, and both ends can store and release energy.
Example four:
as shown in fig. 3, the sliding groove is an arc-shaped groove 7, the arc-shaped groove 7 and the balance disc 2 are concentrically arranged, the sliding body is a plurality of balls 9 sequentially arranged in the arc-shaped groove 7, and the diameter of each ball 9 is slightly smaller than the depth of the arc-shaped groove 7.
Further, as shown in fig. 4, the ball 9 is a solid metal ball, and an elastic buffer layer 10 is wrapped around the solid metal ball. The noise and vibration can be reduced by avoiding rigid collision between the adjacent balls 9.
Example five:
as shown in fig. 5, the bottom of the arc-shaped groove 7 is provided with a limiting groove 11 arranged along the length direction of the sliding groove, and the limiting groove 11 is provided with guiding and limiting functions along the moving direction, so that balls or sliding blocks with limiting bottoms can slide in the rotating direction; in addition, an oil passage is further arranged in the balance disc 2, one end of the oil passage is communicated with the groove, the other end of the oil passage is communicated with an oil passage on the crankshaft, and a part of lubricating oil in the crankshaft can enter the sliding groove due to the arrangement of the oil passage, so that a good lubricating effect is achieved between the sliding body and the sliding groove, the friction resistance is reduced, and the sliding movement effect is improved.
Example six:
a machining and assembling method for a crankshaft structure of a vibration-damping energy-storage refrigeration compressor comprises the following steps of machining a sliding groove 3 on an existing balance disc 2, wherein the sliding groove 3 is arranged in a non-radial mode, and a corresponding sliding body 6 is machined according to the shape of the sliding groove 3; and respectively processing mounting holes 4 at two ends of the sliding groove 3, fixedly mounting one end of an elastic element 5 in the mounting holes 4, finally mounting a sealing cover on the sliding groove 3, and fixing the sealing cover in a screwing or riveting mode.
The sliding groove on the crankshaft is convenient to process, the sliding body and the elastic element are easy to assemble, batch processing and production can be realized in a machining mode, and the cost is low.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a damping energy storage compressor crankshaft structure, includes the bent axle, be equipped with the balance plate on the bent axle, its characterized in that, set up the spout in the balance plate, follow in the spout length direction is equipped with a sliding body at least, the at least one end of spout is equipped with elastic element.
2. The crankshaft structure of a vibration-damping and energy-storing refrigeration compressor as claimed in claim 1, wherein the elastic element is a spring, a tension spring or a rubber elastic column, the end of the chute is provided with a mounting hole, one end of the elastic element is mounted in the mounting hole, and the other end of the elastic element is a free end.
3. The crankshaft structure of a vibration-damping and energy-storing refrigeration compressor as claimed in claim 1, wherein the sliding groove is arranged on the upper end face of the balance disc, and a sealing cover detachably connected with the balance disc is arranged on the sliding groove.
4. The crankshaft structure of a vibration-damping and energy-storing refrigeration compressor according to claim 1, wherein the sliding groove is a strip-shaped sliding groove perpendicular to a bisector of the balance disc, the sliding body is a strip-shaped sliding block, and two sides of the strip-shaped sliding block in the width direction are respectively in sliding contact with the inner wall of the strip-shaped sliding groove.
5. The crankshaft structure of a vibration-damping and energy-storing refrigeration compressor as claimed in claim 1, wherein the angle between the connecting line from the center point of the sliding body to the rotation center point of the crankshaft and the moving direction of the sliding body is: 65-115 degrees.
6. The crankshaft structure of a vibration-damping and energy-storing refrigeration compressor as claimed in claim 1, wherein the sliding groove is an arc-shaped groove, the arc-shaped groove and the balance disk are concentrically arranged or have a coaxiality less than 10mm, and the sliding body is a fan-shaped sliding block.
7. The vibration reducing, energy storing, refrigerant compressor crankshaft structure of claim 1, wherein the sliding body is a plurality of balls arranged in sequence in the sliding slot.
8. The crankshaft structure of a vibration-damping and energy-storing refrigeration compressor as claimed in claim 7, wherein the ball bearings are solid metal balls, and the peripheries of the solid metal balls are wrapped with elastic buffer layers.
9. The crankshaft structure of the vibration-damping and energy-storing refrigeration compressor as claimed in claim 1, wherein the bottom of the sliding groove is provided with a limiting groove arranged along the length direction of the sliding groove; an oil passage is further arranged in the balance disc, one end of the oil passage is communicated with the sliding groove, and the other end of the oil passage is communicated with an oil passage on the crankshaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221133005.8U CN217926201U (en) | 2022-05-12 | 2022-05-12 | Vibration reduction and energy storage refrigeration compressor crankshaft structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221133005.8U CN217926201U (en) | 2022-05-12 | 2022-05-12 | Vibration reduction and energy storage refrigeration compressor crankshaft structure |
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| Publication Number | Publication Date |
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| CN217926201U true CN217926201U (en) | 2022-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221133005.8U Active CN217926201U (en) | 2022-05-12 | 2022-05-12 | Vibration reduction and energy storage refrigeration compressor crankshaft structure |
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| CN (1) | CN217926201U (en) |
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- 2022-05-12 CN CN202221133005.8U patent/CN217926201U/en active Active
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