An axial system balance structure, a compressor and an air conditioner with a self-adjusting function

Abstract

The present invention provides a shafting balance structure with a self-adjusting function, a compressor, and an air conditioner. The shafting balance structure can be sleeved on the rotating shaft and rotate with the rotation of the rotating shaft. The shafting balance structure includes: an adjusting balance sleeve, an adjusting balance main body, and an adjusting balance oscillator. Both the adjusting balance main body and the adjusting balance sleeve are cylindrical structures. The adjusting balance main body is sleeved on the outer side of the adjusting balance sleeve. At the axial end face of the shafting balance structure, an annular groove recessed in the axial direction is formed between the adjusting balance sleeve and the adjusting balance main body, forming a circumferential adjusting track. The adjusting balance oscillator is arranged in the circumferential adjusting track, and the adjusting balance oscillator can roll in the circumferential adjusting track with the rotation of the rotating shaft and finally reach the position of dynamic balance. The present invention can effectively achieve dynamic balance adjustment, thereby effectively solving the problem that during the operation of the compressor, due to the unbalanced operation of the shafting components, vibration and noise are generated.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and particularly to a shafting balance structure, a compressor, and an air conditioner with a self-adjusting function. Background Art

[0002] During the operation of a vehicle-mounted scroll compressor, its shafting assembly is subjected to various excitation forces, including unbalanced rotational inertia forces, electromagnetic forces, impact forces, gas forces, and frictional forces. These acting forces will destroy the running dynamic balance of the shafting assembly, cause vibration and generate noise, and be transmitted to the compressor housing through brackets, scroll plates, etc. In severe cases, it will cause the entire air-conditioning system to resonate, affecting the safe driving of the vehicle. At the same time, it is transmitted to the cab through the air-conditioning system pipeline and the front cover structure of the vehicle, seriously affecting the driving and riding comfort of the vehicle.

[0003] At the same time, when the unbalanced rotation of the shafting assembly is severe, it will cause compressor motor failures, and the dynamic and static scroll plates cannot mesh and compress, affecting the normal operation of the compressor.

[0004] Since the compressor in the prior art has technical problems such as vibration and noise due to the unbalanced operation of the shafting assembly during the working process, the present invention researches and designs a shafting balance structure, a compressor, and an air conditioner with a self-adjusting function. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the compressor in the prior art has vibration and noise due to the unbalanced operation of the shafting assembly during the working process, so as to provide a shafting balance structure, a compressor, and an air conditioner with a self-adjusting function.

[0006] To solve the above problems, the present invention provides a shafting balance structure with a self-adjusting function, wherein: the shafting balance structure is in a cylindrical structure so as to be sleeved on a rotating shaft and can rotate with the rotation of the rotating shaft, and the shafting balance structure includes: an adjusting balance sleeve, an adjusting balance main body, and an adjusting balance oscillator. Both the adjusting balance main body and the adjusting balance sleeve are in a cylindrical structure, and the adjusting balance main body is sleeved outside the adjusting balance sleeve. At the axial end face of the shafting balance structure, an annular groove recessed in the axial direction is formed between the adjusting balance sleeve and the adjusting balance main body, forming a circumferential adjusting track. The adjusting balance oscillator is arranged in the circumferential adjusting track, and the adjusting balance oscillator can roll in the circumferential adjusting track with the rotation of the rotating shaft and finally reach the position of dynamic balance.

[0007] In some embodiments, the bottom surface of the circumferential adjusting track is set as a self-lubricating and wear-resistant surface, and the self-lubricating and wear-resistant surface includes a flat surface and a pit texture provided on the flat surface.

[0008] In some embodiments, the pit texture is a spherical pit texture.

[0009] In some embodiments, there are multiple pit textures, and the multiple pit textures are arranged at intervals from the radial inner circumference to the radial outer circumference of the self-lubricating and wear-resistant surface to form a texture unit. There are multiple texture units, and the multiple texture units are arranged at intervals along the circumferential direction of the self-lubricating and wear-resistant surface.

[0010] In some embodiments, in a cross-section, in a texture unit, the centers of the multiple pit textures are connected into a straight line. The shafting balance structure has a central dot, and the included angle γ between the connection line between the center point on the straight line in a texture unit and the central dot and the straight line is 30° to 35°.

[0011] In some embodiments, the adjusting balance sleeve includes axial fixing bosses at both axial ends thereof. The adjusting balance sleeve is also provided with axial oil guiding holes along its axial direction, and the axial oil guiding holes penetrate from the axial fixing boss at one axial end to the axial fixing boss at the other axial end.

[0012] In some embodiments, a radial oil return groove is further formed in the adjusting balance sleeve along the radial direction of the shafting balance structure. One end of the radial oil return groove is communicated with the axial oil guiding hole, and the other end is communicated with the circumferential adjusting track.

[0013] In some embodiments, there are multiple axial oil guiding holes, and the multiple axial oil guiding holes are arranged at intervals along the circumferential direction of the adjusting balance sleeve. There are also multiple radial oil return grooves, and the multiple radial oil return grooves are also arranged at intervals along the circumferential direction of the adjusting balance sleeve, and the radial oil return grooves are arranged in one-to-one correspondence with the axial oil guiding holes.

[0014] In some embodiments, a connecting portion is further included. The connecting portion is connected between the adjusting balance sleeve and the adjusting balance main body. The radial inner side of the connecting portion is connected to the adjusting balance sleeve, and the radial outer side of the connecting portion is connected to the adjusting balance main body. There are two circumferential adjusting tracks. One circumferential adjusting track is arranged at one axial end of the connecting portion, and the other circumferential adjusting track is arranged at the other axial end of the connecting portion.

[0015] In some embodiments, an adjusting balance ring is further included. The adjusting balance ring is of an annular structure. A snap ring groove is formed on the outer peripheral surface of the adjusting balance main body. The inner peripheral portion of the balance ring is clamped in the snap ring groove, and the outer peripheral portion of the adjusting balance ring protrudes from the outer peripheral surface of the adjusting balance main body.

[0016] In some embodiments, a metal mesh structure is further provided on the outer peripheral surface of the adjustment balance ring; in a cross-sectional plane passing through the axis of the shafting balance structure, the shape of the snap ring groove is rectangular, triangular or U-shaped, and the shape of the adjustment balance ring after being cut is also rectangular, triangular or U-shaped adapted to the snap ring groove.

[0017] In some embodiments, the depth h of the spherical pit texture p is

[0018]

[0019] where: D is the diameter of the spherical pit texture, l is the maximum depth of the spherical pit texture; x, y represent the coordinate positions of the center of the spherical pit texture.

[0020] In some embodiments, the area density S and the depth-diameter ratio h of the spherical pit texture k respectively satisfy:

[0021]

[0022]

[0023] where: a and b are respectively the long side and the short side of the spherical pit texture watershed unit, D is the diameter of the spherical pit texture, l is the maximum depth of the spherical pit texture, and the spherical pit texture watershed unit is the fluid region where the adjustment balance oscillator is in frictional contact with the spherical pit texture.

[0024] In some embodiments, the mass ratio μ of the adjustment balance oscillator to the shafting balance structure is:

[0025]

[0026] where: M is the mass of the shafting balance structure, and m is the mass of the adjustment balance oscillator.

[0027] In some embodiments, the adjustment balance oscillator is a spherical structure, and the calculation formula for the rolling frequency f of the adjustment balance oscillator is:

[0028]

[0029]

[0030] where: M and R are respectively the mass and radius of the shafting balance structure, m and r are respectively the mass and radius of the adjustment balance oscillator, ρ is the distance from the center of the circumferential adjustment track to the center of the adjustment balance oscillator, g is the acceleration due to gravity, and κ is a dimensionless parameter.

[0031] In some embodiments, the number of the adjusting balance oscillators is one, two, or three.

[0032] In some embodiments, when the number of the adjusting balance oscillators is two, the collision stiffness ratio B of the double-adjusting balance oscillators r is:

[0033]

[0034] where β is the collision stiffness and k z is the optimal stiffness.

[0035] The present invention further provides a compressor, which includes the shafting balance structure with a self-adjusting function described in any one of the preceding items, and further includes a rotating shaft, a pump body structure, and a motor part. The motor part can drive the rotating shaft to rotate and then drive the pump body structure to perform compression. The shafting balance structure is sleeved on the rotating shaft.

[0036] The present invention further provides an air conditioner, which includes the compressor described above.

[0037] The shafting balance structure with a self-adjusting function, the compressor, and the air conditioner provided by the present invention have the following beneficial effects:

[0038] By providing the shafting balance structure with a self-adjusting function, which is sleeved on the rotating shaft and can rotate with the rotating shaft, and the shafting balance structure includes an adjusting balance sleeve and an adjusting balance body, a circular circumferential adjusting track is formed between the adjusting balance sleeve and the adjusting balance body and at the axial end face. The adjusting balance oscillator can be arranged in the circumferential adjusting track. When the compressor shafting assembly is subjected to acting forces such as unbalanced rotational inertial forces and generates unbalanced rotation, the adjusting balance oscillator in the self-adjusting shafting balance structure can roll in the circumferential adjusting track. By changing its position in the circumferential adjusting track, dynamic balance adjustment can be effectively realized, thereby effectively solving the problems that during the operation of the compressor, due to the unbalanced operation of the shafting assembly, vibration and noise are generated. The movement of the adjusting balance oscillator is related to the unbalanced force received by the shafting, and can be adjusted in real time to avoid vibration and noise generation of the shafting assembly. The circumferential adjusting track is designed with a self-lubricating and wear-resistant surface to avoid wear of the movement of the adjusting oscillator. The self-adjusting shafting balance structure is designed with axial and radial oil return holes to lubricate the dynamic disk bearing and the bracket bearing, realize the stable operation of the bearing, and improve the service life of the bearing. At the same time, the self-adjusting shafting balance structure adopts a split installation, which is small in size and convenient for installation and use. Description of the Drawings

[0039] Figure 1 is a cross-sectional view of the compressor with the shafting balance structure with a self-adjusting function of the present invention;

[0040] Figure 2Stereoscopic structure diagram of the shafting balance structure with self - regulating function of the present invention;

[0041] Figure 3 is Figure 2 Stereoscopic structure diagram of the adjustment balance sleeve, adjustment balance main body and connection part in

[0042] Figure 4 is Figure 3 Top view structure diagram of the shafting balance structure in

[0043] Figure 4-1 is Figure 4 Partial enlarged view of part A in

[0044] Figure 5 is Figure 3 Front - view sectional view of the shafting balance structure in

[0045] Figure 6 is Figure 2 Enlarged structure diagram of the adjustment balance oscillator in

[0046] Figure 7 is Figure 2 Enlarged structure diagram of the adjustment balance ring in

[0047] Figure 8 Dynamic model diagram (single rotor) of the shafting balance structure with self - regulating function of the present invention;

[0048] Figure 9 Dynamic model diagram (double rotor) of the shafting balance structure with self - regulating function of the present invention.

[0049] The reference numerals are represented as:

[0050] 1. Front end cover; 2. Static scroll disk; 31. Moving scroll disk; 32. Moving scroll bearing; 4. Bracket; 5. Shafting balance structure; 6. Shafting assembly; 7. Rotating shaft; 8. Compressor housing; 50. Adjustment balance main body; 51. Adjustment balance sleeve; 511. Axial fixing boss; 512. Axial oil guiding hole; 513. Circumferential adjustment track; 514. Self - lubricating and wear - resistant surface; 515. Radial oil return groove; 516. Pit texture; 517. Snap ring groove; 52. Adjustment balance oscillator; 53. Adjustment balance ring; 54. Connection part. Detailed implementation manners

[0051] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and the corresponding drawings. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0052] Combined with Figure 1-9 As shown, the present invention provides a shafting balance structure with a self-adjusting function, wherein:

[0053] The shafting balance structure is in a cylindrical structure so as to be sleeved on the rotating shaft and can rotate with the rotation of the rotating shaft. The shafting balance structure includes an adjusting balance sleeve 51, an adjusting balance body 50, and an adjusting balance oscillator 52. Both the adjusting balance body 50 and the adjusting balance sleeve 51 are in a cylindrical structure, and the adjusting balance body 50 is sleeved outside the adjusting balance sleeve 51. At the axial end face of the shafting balance structure and between the adjusting balance sleeve 51 and the adjusting balance body 50, an annular groove recessed in the axial direction is formed to form a circumferential adjusting track 513. The adjusting balance oscillator 52 is arranged in the circumferential adjusting track 513, and the adjusting balance oscillator 52 can roll in the circumferential adjusting track 513 with the rotation of the rotating shaft and finally reach the position of dynamic balance.

[0054] By setting a shafting balance structure with a self-adjusting function in the present invention, which is sleeved on the rotating shaft and can rotate with the rotation of the rotating shaft. The shafting balance structure includes an adjusting balance sleeve and an adjusting balance body. An annular circumferential adjusting track is formed between the adjusting balance sleeve and the adjusting balance body and at the axial end face. The adjusting balance oscillator can be arranged in this circumferential adjusting track. When the compressor shafting assembly is subjected to acting forces such as unbalanced rotational inertia forces and generates unbalanced rotation, the adjusting balance oscillator in the self-adjusting shafting balance structure can roll in the circumferential adjusting track. By changing its position in the circumferential adjusting track, the dynamic balance adjustment can be effectively realized, thereby effectively solving the problem that the compressor has vibration and generates noise during operation due to the unbalanced operation of the shafting assembly. The movement of the adjusting balance oscillator is related to the unbalanced force received by the shafting, and it can be adjusted in real time to avoid the vibration and noise generation of the shafting assembly.

[0055] When the compressor is in a stationary state, the adjusting balance weight 52 is adjusted to the lowest horizontal position of the circumferential adjusting track 513. After the compressor starts, the adjusting balance weight 52 moves in a circular motion within the circumferential adjusting track 513 along with the main shaft 7. When the shafting assembly 6 is dynamically balanced, the adjusting balance weight 52 is stationary relative to the adjusting balance sleeve 51. When the shafting assembly 6 is dynamically unbalanced, the adjusting balance weight 52 is automatically adjusted according to the eccentricity of the main shaft 7, and the adjustment amount Δr is between 0.1 and 0.35 mm. When unbalanced, the balance weight is adjusted by a position offset. After dynamic balance, the position of the balance weight remains unchanged, that is, it is relatively stationary with respect to the adjusting balance sleeve 51, not absolutely stationary.

[0056] The following technical problems solved by the present invention

[0057] 1. Reduce the vibration of the compressor shafting, avoid causing compressor resonance, and improve the mechanical vibration noise of the compressor;

[0058] 2. Perform adaptive adjustment according to the movement of the shafting to meet the balance adjustment under different loads and working conditions;

[0059] 3. Adopt a split installation, which is simple to operate and requires little space.

[0060] To solve this problem, the present invention provides a shafting balance structure with a self-adjusting function and its compressor, which can self-adjust the unbalanced operation of the compressor shafting assembly, reduce the vibration of the entire compressor caused by shafting vibration, and avoid causing resonance in the air-conditioning system; at the same time, reduce and improve the radiation noise caused by compressor vibration and the mechanical noise and internal pneumatic noise generated during the vibration process of the compressor.

[0061] The present invention is realized by designing a shafting balance structure with a self-adjusting function. When the compressor shafting assembly generates unbalanced rotation under the action of unbalanced rotational inertia forces and other forces, the adjusting balance weight in the self-adjusting shafting balance structure realizes dynamic balance adjustment by changing its position in the circumferential adjusting track. The movement of the adjusting balance weight is related to the unbalanced force received by the shafting and can be adjusted in real time. The circumferential adjusting track is designed with a self-lubricating and wear-resistant surface to avoid wear of the movement of the adjusting weight. The self-adjusting shafting balance structure is designed with axial and radial oil return holes to lubricate the dynamic disk bearing and the support bearing, realize the smooth operation of the bearing, and improve the service life of the bearing. At the same time, the self-adjusting shafting balance structure adopts a split installation, which is small in size and convenient for installation and use.

[0062] In some embodiments, the bottom surface of the circumferential adjustment track 513 is provided with a self-lubricating and wear-resistant surface 514, and the self-lubricating and wear-resistant surface 514 includes a flat surface and a pit texture 516 (preferably a pit micro-texture) provided on the flat surface. By setting the bottom surface of the circumferential adjustment track as a self-lubricating and wear-resistant surface, the present invention can achieve the effect of anti-wear. In particular, through the design of the pit texture, it can effectively avoid the wear of the adjustment balance rotor or reduce the wear of the adjustment balance rotor during rolling.

[0063] The texture of the present invention refers to the texture in tribology, which means that various shapes of textures are processed on the material surface to form a surface texture, which has the functions of storing lubricating fluid, increasing the load-bearing capacity of the lubricating film, improving the lubrication effect, and enhancing the anti-wear performance.

[0064] The head of the rotating shaft 7 of the present invention is designed with a self-adjusting shafting balance structure 5, which is composed of an adjustment balance sleeve 51, an adjustment balance oscillator 52, and an adjustment balance ring 53, and is installed in a split or integral manner.

[0065] The adjustment balance sleeve 51 is installed at the head of the rotating shaft 7 by interference fit or threaded fastening. One end is in contact with the end face of the rotating shaft 7, and the other end is in contact with the end face of the moving disk bearing 32. An axially fixed boss 511 is provided on the end face of the adjustment balance sleeve 51 to axially limit and constrain the moving disk bearing 32. Axially distributed axial oil guide holes 512 are provided on the axially fixed boss 511, and the axial oil guide holes 512 penetrate along the direction of the rotating shaft 7. A radially distributed radial oil return groove 515 is opened at the intersection of the axially fixed boss 511 and the circumferential adjustment track 513, corresponding to and communicating with the axial oil guide holes 512. The refrigerating oil lubricates the moving disk bearing 32 through the axial oil guide holes 512 and lubricates the adjustment balance oscillator 52 through the radial oil return grooves 515. The circumferential adjustment track 513 is designed with a self-lubricating and wear-resistant surface 514, and the self-lubricating and wear-resistant surface 514 adopts a spherical pit micro-texture.

[0066] In some embodiments, the pit texture 516 is a spherical pit texture; the adjustment balance oscillator 52 is a spherical structure. This is a further preferred structural form of the pit texture of the present invention, that is, it is processed into a spherical pit shape, which is convenient for processing and improves the anti-wear effect; the adjustment balance oscillator is preferably a spherical structure, which can make it roll smoothly in the circumferential adjustment track, prevent the existence of sliding friction, and reduce friction.

[0067] In some embodiments, there are multiple pit textures 516, and the multiple pit textures 516 are arranged at intervals from the radially inner circumference to the radially outer circumference of the self-lubricating and wear-resistant surface 514 to form a texture unit (preferably a micro-texture unit). There are multiple such texture units, and the multiple texture units are arranged at intervals along the circumferential direction of the self-lubricating and wear-resistant surface 514. This is a further preferred structural form of the pit texture of the present invention. It forms texture units by arranging at intervals from the radially inner circumference to the radially outer circumference and arranges multiple texture units in the circumferential direction, thereby forming a uniform surface texture structure, so that when the balance adjustment oscillator rolls along the circumference, it can improve the uniform anti-wear effect on the oscillator.

[0068] In some embodiments, in a cross-section, in a texture unit, the centers of the multiple pit textures 516 are connected into a straight line. The shafting balance structure has a central dot, and there is an included angle γ between the connection line connecting the center point on the straight line in a texture unit and the central dot and the straight line, and γ ranges from 30° to 35°. This is a further preferred structural form of the present invention, that is, there is a certain inclination angle between the texture unit and the radial direction, which can further improve the uniformity of the contact stress on the oscillator when the oscillator rolls along the circumference on the texture, and further improve the anti-wear effect.

[0069] In some embodiments, the adjustment balance sleeve 51 includes axial fixing bosses 511 located at both axial ends thereof. The adjustment balance sleeve 51 is also provided with an axial oil guiding hole 512 along its axial direction, and the axial oil guiding hole 512 penetrates through the axial fixing bosses at one axial end to the axial fixing bosses at the other axial end. By providing the axial oil guiding hole in the form of penetrating the axial fixing bosses at both axial end faces along the axial direction of the adjustment balance sleeve, the present invention can play a role in guiding oil, thereby lubricating the dynamic disk bearing at one axial end and also lubricating the bracket bearing.

[0070] In some embodiments, a radial oil return groove 515 is further opened in the interior of the adjustment balance sleeve 51 along the radial direction of the shafting balance structure. One end of the radial oil return groove 515 is communicated with the axial oil guiding hole 512, and the other end is communicated with the circumferential adjustment track 513. The present invention can also effectively conduct the oil in the axial oil guiding hole to the radial oil return groove through the setting of the radial oil return groove, and then enter the circumferential adjustment track, thereby further lubricating the balance adjustment oscillator and further improving the anti-wear effect.

[0071] In some embodiments, there are multiple axial oil guiding holes 512, and the multiple axial oil guiding holes 512 are arranged at intervals along the circumferential direction of the adjusting balance sleeve 51. There are also multiple radial oil return grooves 515, and the multiple radial oil return grooves 515 are also arranged at intervals along the circumferential direction of the adjusting balance sleeve 51, and the radial oil return grooves 515 are arranged in one-to-one correspondence with the axial oil guiding holes 512. This is a further preferred structural form of the axial oil guiding holes and the radial oil return grooves of the present invention. The lubrication effect on the moving disc bearing can be improved through the multiple axially arranged oil guiding holes in the circumferential direction. Through the multiple radially arranged oil return grooves in the circumferential direction, lubricating oil can be distributed almost all over the circumferential adjusting track, and further the lubrication effect on the balance adjusting oscillator can be improved.

[0072] In some embodiments, it further includes a connecting part 54. The connecting part 54 is connected between the adjusting balance sleeve 51 and the adjusting balance main body 50. The radially inner side of the connecting part 54 is connected to the adjusting balance sleeve 51, and the radially outer side of the connecting part 54 is connected to the adjusting balance main body 50. There are two circumferential adjusting tracks 513. One circumferential adjusting track 513 is arranged at one axial end of the connecting part 54, and the other circumferential adjusting track 513 is arranged at the other axial end of the connecting part 54. The present invention can also effectively connect the adjusting balance sleeve and the adjusting balance main body into an integral structure through the structure of the connecting part. The three can be integrally formed or separately connected, and circumferential adjusting tracks in the form of annular grooves can be respectively formed at both axial ends of the connecting part.

[0073] In some embodiments, it further includes an adjusting balance ring 53. The adjusting balance ring 53 is of an annular structure. A snap ring groove 517 is formed on the outer peripheral surface of the adjusting balance main body 50. The inner peripheral part of the adjusting balance ring 53 is clamped in the snap ring groove 517, and the outer peripheral part of the adjusting balance ring 53 protrudes from the outer peripheral surface of the adjusting balance main body 50. Through the structure of the adjusting balance ring, the present invention can adsorb lubricating oil through the rotation of the shafting balance structure, improve the lubrication effect on the moving disc bearing, and also improve the lubrication effect on the bracket bearing.

[0074] In some embodiments, a metal mesh structure is further arranged on the outer peripheral surface of the adjusting balance ring 53. In the cross-sectional plane passing through the axis of the shafting balance structure, the shape of the snap ring groove 517 is rectangular, triangular or U-shaped, and the shape of the adjusting balance ring 53 after being intercepted is also rectangular, triangular or U-shaped adapted to the snap ring groove 517. The present invention can further improve the oil adsorption effect through the metal mesh structure, and further improve the lubrication effect on the moving disc bearing.

[0075] The adjustment balance ring 53 and the snap ring groove 517 are in a small interference fit, and the interference amount is generally 0.05 - 0.1 mm. The outer end face of the adjustment balance ring 53 is designed with a stainless steel metal mesh (which functions to adsorb and separate oil droplets), and the oil droplets inside the bracket 4 are rotated and separated through the circular motion of the self-adjusting shafting balance structure 5 and then transmitted, realizing the lubrication of the dynamic disk bearing 32. The mating shape between the adjustment balance ring 53 and the snap ring groove 517 can be rectangular, or U-shaped or triangular.

[0076] In some embodiments, the depth h of the spherical pit texture p is

[0077]

[0078] where: D is the diameter of the spherical pit texture, l is the maximum depth of the spherical pit texture; x, y represent the coordinate positions of the center of the spherical pit texture. As Figure 4 shown, in the cross-section, with the center of the shafting balance structure as the origin O, two perpendicular directions are respectively the X-axis and the Y-axis, thus forming a rectangular coordinate system; in this coordinate system, the abscissa of the center of the spherical pit texture is x, and the ordinate is y.

[0079] Under the condition of satisfying this formula, the lubrication effect of the self-lubricating and wear-resistant surface 514 with pit texture is the best.

[0080] In some embodiments, in order to reduce the frictional wear of the adjustment balance oscillator 52 on the self-lubricating and wear-resistant surface 514 and increase the average bearing capacity of the surface of the self-lubricating and wear-resistant surface 514, the area density S and the depth-diameter ratio h of the spherical pit texture k respectively satisfy:

[0081]

[0082]

[0083] where: a and b are respectively the long side and the short side of the spherical pit texture watershed unit, D is the diameter of the spherical pit texture, l is the maximum depth of the spherical pit texture, and the spherical pit texture watershed unit is the fluid area where the adjustment balance oscillator 52 and the spherical pit texture are in frictional contact, and one micro-texture watershed unit is called the spherical pit texture watershed unit.

[0084] Under the condition of satisfying this formula, the average bearing capacity of the self-lubricating and wear-resistant surface with pit texture is the largest, and the wear-resistant effect is the best.

[0085] In some embodiments, the mass ratio μ of the adjustment balance oscillator 52 to the shafting balance structure 5 is:

[0086]

[0087] Where: M is the mass of the shafting balance structure 5, and m is the mass of the adjusting balance oscillator 52. Using this formula for design can ensure the maximum dynamic adjustment ability and the best adjustment effect under the same conditions.

[0088] In some embodiments, the adjusting balance oscillator 52 is a spherical structure, and the calculation formula for the rolling frequency f of the adjusting balance oscillator 52 is:

[0089]

[0090]

[0091] Where: M and R are respectively the mass and radius of the shafting balance structure 5, m and r are respectively the mass and radius of the adjusting balance oscillator 52, ρ is the distance from the center of the circumferential adjustment track 513 to the center of the adjusting balance oscillator 52, g is the acceleration due to gravity, and κ is a dimensionless parameter, which is only the ratio of R to r.

[0092] Using this formula for design can ensure the maximum dynamic adjustment ability and the best adjustment effect under the same conditions.

[0093] In order to reduce the vibration problem caused by a single adjusting balance oscillator 52 during the balance adjustment process, double-adjusting balance oscillator collision absorption can be adopted to achieve energy loss. To reduce the weight of the self-adjusting shafting balance structure 5, the number n of the adjusting balance oscillators 52 should not exceed 3. In some embodiments, the number of the adjusting balance oscillators 52 is 1, 2, or 3.

[0094] In some embodiments, when the number of the adjusting balance oscillators 52 is 2, the collision stiffness ratio B of the double-adjusting balance oscillators r is:

[0095]

[0096] Where β is the collision stiffness and k z is the optimal stiffness.

[0097] The range defined by this formula is the optimal (best) design range of the present invention.

[0098] Meanwhile, in order to improve the impact resistance and vibration damping effect of the adjusting balance oscillator 52, its surface is coated with a polyurea coating; the adjusting balance oscillators 52 can be distributed on the upper part and / or lower part of the circumferential adjustment track 513.

[0099] The present invention also provides a compressor, characterized in that: it includes the shafting balance structure with self-adjusting function described in any one of the previous items, and further includes a rotating shaft, a pump body structure and a motor part. The motor part can drive the rotating shaft to rotate and then drive the pump body structure to perform compression. The shafting balance structure is sleeved on the rotating shaft.

[0100] The present invention also provides an air conditioner, which includes the compressor described above.

[0101] The present invention relates to a shafting balance structure with self-adjusting function and its compressor, including a front end cover 1, a stationary scroll plate 2, a moving scroll plate 31, a bracket 4, a self-adjusting shafting balance structure 5, a shafting assembly 6, a main shaft 7, a compressor housing 8 and other structures. The moving scroll plate 31 makes a circular motion driven by the compressor shafting assembly 6. During the motion, it meshes with the stationary scroll plate 2 and forms a plurality of closed compression chambers with continuously changing volumes of different sizes. After the compression process is completed, the refrigerant gas is discharged. During the operation of the compressor, due to the dynamic imbalance of the shafting assembly 6, vibrations are generated, causing the eccentric motion of the main shaft 7, and being transmitted to the stationary scroll plate 2 and the moving scroll plate 31 through the main shaft 7.

[0102] It is easy for those skilled in the art to understand that, on the premise of no conflict, the above-mentioned advantageous ways can be freely combined and superimposed.

[0103] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above is only the preferred implementation manner of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An axial system balance structure with self - regulating function, characterized in that: The axial system balance structure is in a cylindrical structure so as to be sleeved on a rotating shaft and can rotate with the rotation of the rotating shaft. And the axial system balance structure includes: an adjusting balance sleeve (51), an adjusting balance body (50) and an adjusting balance oscillator (52). Both the adjusting balance body (50) and the adjusting balance sleeve (51) are in cylindrical structures, and the adjusting balance body (50) is sleeved on the outer side of the adjusting balance sleeve (51). At the axial end face of the axial system balance structure and between the adjusting balance sleeve (51) and the adjusting balance body (50), an annular groove recessed along the axial direction is formed to form a circumferential adjusting track (513). The adjusting balance oscillator (52) is arranged in the circumferential adjusting track (513), and the adjusting balance oscillator (52) can roll in the circumferential adjusting track (513) with the rotation of the rotating shaft and finally reach the position of dynamic balance; The adjusting balance sleeve (51) includes axial fixing bosses (511) at both axial ends thereof. The adjusting balance sleeve (51) is also provided with an axial oil guiding hole (512) along its axial direction, and the axial oil guiding hole (512) penetrates from the axial fixing boss at one axial end to the axial fixing boss at the other axial end; A radial oil return groove (515) is further opened in the adjusting balance sleeve (51) along the radial direction of the axial system balance structure. One end of the radial oil return groove (515) is communicated with the axial oil guiding hole (512), and the other end is communicated with the circumferential adjusting track (513).

2. The axial system balance structure with self - regulating function according to claim 1, characterized in that: The bottom surface of the circumferential adjusting track (513) is set as a self - lubricating and wear - resistant surface (514), and the self - lubricating and wear - resistant surface (514) includes a plane and a pit texture (516) arranged on the plane.

3. The axial system balance structure with self - regulating function according to claim 2, characterized in that: The pit texture (516) is a spherical pit texture; the adjusting balance oscillator (52) is a spherical structure.

4. The axial system balance structure with self - regulating function according to claim 2, characterized in that: There are multiple pit textures (516), and the multiple pit textures (516) are arranged at intervals from the radial inner circumference to the radial outer circumference of the self - lubricating and wear - resistant surface (514) to form a texture unit. There are multiple texture units, and the multiple texture units are arranged at intervals along the circumferential direction of the self - lubricating and wear - resistant surface (514).

5. The axial system balance structure with self - regulating function according to claim 4, characterized in that: In the cross - section of the axial system balance structure, in a texture unit, the centers of the multiple pit textures (516) are connected into a straight line. The cross - section of the axial system balance structure has a central dot, and the included angle γ between the connection line connecting the center point on the straight line in a texture unit and the central dot and the straight line is 30° - 35°.

6. The shafting balance structure with self - adjusting function according to claim 1, characterized in that: The axial oil guide holes (512) are multiple, and the multiple axial oil guide holes (512) are arranged at intervals along the circumferential direction of the adjusting balance sleeve (51). The radial oil return grooves (515) are also multiple, and the multiple radial oil return grooves (515) are also arranged at intervals along the circumferential direction of the adjusting balance sleeve (51), and the radial oil return grooves (515) are arranged in one - to - one correspondence with the axial oil guide holes (512).

7. The shafting balance structure with self - adjusting function according to claim 1, characterized in that: It further includes a connecting part (54). The connecting part (54) is connected between the adjusting balance sleeve (51) and the adjusting balance main body (50). The radial inner side of the connecting part (54) is in contact with the adjusting balance sleeve (51), and the radial outer side of the connecting part (54) is in contact with the adjusting balance main body (50). And there are two circumferential adjusting tracks (513). One circumferential adjusting track (513) is arranged at one axial end of the connecting part (54), and the other circumferential adjusting track (513) is arranged at the other axial end of the connecting part (54).

8. The shafting balance structure with self - adjusting function according to claim 1, characterized in that: It further includes an adjusting balance ring (53). The adjusting balance ring (53) is of an annular structure. A snap ring groove (517) is formed on the outer peripheral surface of the adjusting balance main body (50). The inner peripheral part of the adjusting balance ring (53) is clamped in the snap ring groove (517), and the outer peripheral part of the adjusting balance ring (53) protrudes from the outer peripheral surface of the adjusting balance main body (50).

9. The shafting balance structure with self - adjusting function according to claim 8, characterized in that: A metal mesh structure is further arranged on the outer peripheral surface of the adjusting balance ring (53); in the cross - sectional plane passing through the axis of the shafting balance structure, the shape of the snap ring groove (517) is rectangular, triangular or U - shaped, and the shape of the adjusting balance ring (53) after being intercepted is also rectangular, triangular or U - shaped adapted to the snap ring groove (517).

10. The shafting balance structure with self - adjusting function according to claim 3, characterized in that: The depth h of the spherical pit texture p is as follows: Wherein: D is the diameter of the spherical pit texture, l is the maximum depth of the spherical pit texture; x, y represent the coordinate positions of the center of the spherical pit texture.

11. The shafting balance structure with self - adjusting function according to claim 3, characterized in that: The area density S and the depth-to-diameter ratio h of the spherical concave texture k respectively satisfy: Wherein: a and b are respectively the long side and the short side of the spherical pit texture watershed unit, D is the diameter of the spherical pit texture, l is the maximum depth of the spherical pit texture, and the spherical pit texture watershed unit is the fluid area where the adjusting balance oscillator (52) is in frictional contact with the spherical pit texture.

12. The shafting balance structure with self - adjusting function according to claim 1, characterized in that: The mass ratio μ of the adjusting balance oscillator (52) to the shafting balance structure (5) is: Wherein: M is the mass of the shafting balance structure (5), and m is the mass of the adjusting balance oscillator (52).

13. The shafting balance structure with self-adjusting function according to any one of claims 1-12, characterized in that: The adjusting balance oscillator (52) is a spherical structure, and the calculation formula for the rolling frequency f of the adjusting balance oscillator (52) is: Wherein: M and R are respectively the mass and radius of the shafting balance structure (5), m and r are respectively the mass and radius of the adjusting balance oscillator (52), ρ is the distance from the center of the circumferential adjusting track (513) to the center of the adjusting balance oscillator (52), g is the acceleration due to gravity, and κ is a dimensionless parameter.

14. The shafting balance structure with self-adjusting function according to any one of claims 1-13, characterized in that: The number of the adjusting balance oscillators (52) is 1, 2 or 3.

15. The shafting balance structure with self-adjusting function according to claim 14, characterized in that: When there are two said adjusting balance oscillators (52), the collision stiffness ratio B of the double-adjusting balance oscillators r is as follows: Among them, β is the collision stiffness, and k z is the optimal stiffness.

16. A compressor, characterized in that: Comprising the shafting balance structure with self-adjusting function according to any one of claims 1-15, further comprising a rotating shaft, a pump body structure and a motor part, the motor part can drive the rotating shaft to rotate and then drive the pump body structure to perform compression, and the shafting balance structure is sleeved on the rotating shaft.

17. An air conditioner, characterized in that: Comprising the compressor according to claim 16.

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