CN118088560A - Crankshaft assembly and compressor with same - Google Patents

Abstract

The invention provides a crankshaft assembly and a compressor with the same, wherein the crankshaft assembly comprises: the crankshaft is provided with a crankshaft inner hole, the crankshaft inner hole penetrates through two ends of the crankshaft, and the crankshaft inner hole comprises a damping hole chamber; a damper including a plurality of particle damping for filling in the damping hole chamber; the impurity filter is arranged in the damping hole chamber and is positioned at one end of the damping hole chamber; the central line of vibration damping hole room and the central line collineation of bent axle, the first end of vibration damping hole room flushes with the first end of bent axle, and the second end of vibration damping hole room sets up with the second end of bent axle, and impurity filter is located the first end of vibration damping hole room to the unable steady problem of operation when solving the scroll compressor among the prior art at high-speed operation.

Description

Crankshaft assembly and compressor with same

Technical Field

The invention relates to the technical field of compressors, in particular to a crankshaft assembly and a compressor with the crankshaft assembly.

Background

The vortex compressor has the advantages of compact structure, high efficiency, energy saving, stable operation, low noise due to micro vibration and the like, is widely applied in various fields, and utilizes the meshing motion of the dynamic vortex plate and the static vortex plate to compress the refrigerant to realize refrigeration.

However, in a high-speed operation state, the pressure in the compression chamber of the scroll compressor is large, and the actuation and the impact separation of the fixed scroll are easy to conduct, so that axial leakage and compressor vibration are caused, and the smooth operation of the scroll compressor is affected. In the prior art, the back pressure is introduced to offset the pressure of the compression cavity, but the back pressure is leaked between the compression cavity and the back pressure cavity, so that the volumetric efficiency of the scroll compressor is reduced.

When the scroll compressor runs at a high speed, the bearing can bear a larger load, and the problems of poor lubrication and easy drying and abrasion of the bearing are easy to occur after the bearing runs for a long time, so that the stable running of the scroll compressor is influenced, and the service life of the bearing is greatly reduced. Therefore, ensuring effective lubrication of bearings, reducing wear, is critical to smooth operation of the scroll compressor.

Disclosure of Invention

The invention mainly aims to provide a crankshaft assembly and a compressor with the crankshaft assembly, so as to solve the problem that a vortex compressor in the prior art cannot stably run when running at a high speed.

In order to achieve the above object, according to one aspect of the present invention, there is provided a crankshaft assembly comprising: the crankshaft is provided with a crankshaft inner hole, the crankshaft inner hole penetrates through two ends of the crankshaft, and the crankshaft inner hole comprises a damping hole chamber; a damper including a plurality of particle damping for filling in the damping hole chamber; the impurity filter is arranged in the damping hole chamber and is positioned at one end of the damping hole chamber; the central line of the vibration damping hole chamber is collinear with the central line of the crankshaft, the first end of the vibration damping hole chamber is flush with the first end of the crankshaft, the second end of the vibration damping hole chamber is arranged between the second end of the vibration damping hole chamber and the second end of the crankshaft, and the impurity filter is positioned at the first end of the vibration damping hole chamber.

Further, the damper comprises a partition plate arranged in the damping hole chamber so as to divide the damping hole chamber into a plurality of hole sections, and a plurality of through holes are formed in the partition plate at intervals.

Further, the cross section of the through hole is polygonal or circular; and/or at least one of a thickness of the diaphragm and a position of the diaphragm within the damping orifice chamber is adjustably positioned to adjust a volume of the respective two orifice segments; and/or the number of baffles may be adjustably positioned to adjust the number of orifice segments within the damping orifice chamber.

Further, the damper includes first and second diaphragms disposed within the damper bore chamber at intervals along a centerline of the crankshaft, the first and second diaphragms dividing the damper bore chamber into first, second and third bore sections.

Further, the area of the bore section of the first bore section is smaller than the area of the bore section of the second bore section, and the area of the bore section of the second bore section is smaller than the area of the bore section of the third bore section.

Further, a lubrication channel is arranged on the crankshaft, one end of the lubrication channel is communicated with the inner hole of the crankshaft, and the other end of the lubrication channel extends to the outer peripheral surface of the crankshaft.

Further, an oil guide groove is formed in the inner wall surface of the lubrication channel.

Further, the number of lubrication channels is plural, and the plural lubrication channels are arranged at intervals along the center line of the crankshaft.

Further, the plurality of lubrication channels includes: the first lubrication channel and the second lubrication channel are communicated with the vibration damping hole chamber and are respectively arranged close to two ends of the vibration damping hole chamber.

Further, the vibration damper comprises a super-oleophobic metal closed pore network which is arranged in the vibration damping pore chamber and connected with the impurity filter, and a plurality of particle damping layers are arranged in the super-oleophobic metal closed pore network.

Further, the particle damping includes damping main part, and damping main part is the spheroid, and particle damping still includes: a plurality of protrusions disposed on an outer circumferential surface of the damping body at intervals; and/or a plurality of pits provided at intervals on the outer circumferential surface of the damping body.

Further, the total mass M of the plurality of particulate dampers and the total mass M of the crankshaft assembly should satisfyWherein, the method comprises the steps of, wherein,。

Further, the inner hole of the crankshaft comprises a back pressure channel connected with the vibration damping hole chamber, one end of the back pressure channel far away from the vibration damping hole chamber extends to the second end of the crankshaft, and the center line of the back pressure channel is arranged at intervals with the center line of the crankshaft; the crankshaft comprises a main shaft section and an eccentric shaft section which are connected, the vibration damping hole chamber is all positioned on the main shaft section, and at least part of the back pressure channel is positioned on the eccentric shaft section.

Further, the crankshaft assembly comprises a throttling pin which is arranged in the back pressure channel and in interference connection with the back pressure channel, and threads are arranged on the outer peripheral surface of the throttling pin so as to form a spiral flow channel with the inner wall surface of the back pressure channel in a surrounding mode.

Further, a third lubrication channel is arranged on the eccentric shaft section, one end of the third lubrication channel is communicated with the back pressure channel, and the other end of the third lubrication channel extends to the outer peripheral surface of the crankshaft.

According to another aspect of the present invention, there is provided a compressor including the above crankshaft assembly, the compressor further comprising: the shell comprises a containing cavity and an opening part which are connected, and the shell is positioned in the containing cavity; the motor is arranged in the accommodating cavity, and a rotor of the motor is sleeved on the crankshaft assembly to drive the crankshaft assembly to rotate; the bracket is arranged in the accommodating cavity; the movable vortex disc is sleeved on the crankshaft assembly and is positioned on one side of the bracket far away from the motor; the fixed scroll is arranged in the accommodating cavity and is positioned at one side of the movable scroll far away from the motor so as to form a back pressure cavity with the movable scroll component; the bearing assembly comprises a shell bearing, a bracket bearing and a movable disc bearing which are sequentially arranged at intervals along the rotation axis of the crankshaft assembly, the crankshaft assembly is connected with the shell through the shell bearing, the crankshaft assembly is connected with the bracket through the bracket bearing, and the movable disc is connected with the fixed disc through the movable disc bearing; wherein, be provided with the casing backward flow mouth on the casing, be provided with the protecgulum discharge port on the protecgulum, the compressor still includes the exhaust flow pipe, and the exhaust flow pipe is located the casing and the exhaust flow pipe includes the first pipeline section that both ends are connected with casing backward flow mouth and protecgulum discharge port respectively.

Further, a plurality of lubrication channels are arranged on the crankshaft, one end of each lubrication channel is communicated with an inner hole of the crankshaft, and the other end of each lubrication channel extends to the outer peripheral surface of the crankshaft; the plurality of lubrication channels comprise a first lubrication channel and a second lubrication channel, and the first lubrication channel and the second lubrication channel are communicated with the vibration damping hole chamber and are respectively arranged close to two ends of the vibration damping hole chamber; the shell bearing is arranged corresponding to the first lubrication channel, and is provided with a first oil hole communicated with the first lubrication channel; and/or the bracket bearing is arranged corresponding to the second lubrication channel, and a second oil hole communicated with the second lubrication channel is arranged on the bracket bearing.

Further, the inner hole of the crankshaft comprises a back pressure channel connected with the vibration damping hole chamber, one end of the back pressure channel far away from the vibration damping hole chamber extends to the second end of the crankshaft, and the center line of the back pressure channel is arranged at intervals with the center line of the crankshaft; the crankshaft comprises a main shaft section and an eccentric shaft section which are connected, the vibration damping hole chamber is all positioned on the main shaft section, and at least part of the back pressure channel is positioned on the eccentric shaft section; the eccentric shaft section is provided with a third lubrication channel, one end of the third lubrication channel is communicated with the back pressure channel, and the other end of the third lubrication channel extends to the outer peripheral surface of the crankshaft; the movable vortex plate comprises a movable plate main body and an eccentric shaft sleeve which are connected, the movable plate main body is sleeved on the main shaft section, the eccentric shaft sleeve is sleeved on the eccentric shaft section, and the movable plate bearing is sleeved on the eccentric shaft sleeve; the eccentric shaft sleeve is provided with a third oil flowing hole which is communicated with the third lubrication channel.

By applying the technical scheme of the invention, the crankshaft assembly comprises: the crankshaft is provided with a crankshaft inner hole, the crankshaft inner hole penetrates through two ends of the crankshaft, and the crankshaft inner hole comprises a damping hole chamber; a damper including a plurality of particle damping for filling in the damping hole chamber; the impurity filter is arranged in the damping hole chamber and is positioned at one end of the damping hole chamber; the central line of the vibration damping hole chamber is collinear with the central line of the crankshaft, the first end of the vibration damping hole chamber is flush with the first end of the crankshaft, the second end of the vibration damping hole chamber is arranged between the second end of the vibration damping hole chamber and the second end of the crankshaft, and the impurity filter is positioned at the first end of the vibration damping hole chamber. Therefore, the crankshaft assembly disclosed by the invention has the advantages that the shock absorber and the impurity filter with the particle damping are arranged in the crankshaft, so that the collision and the impact among the particle damping are utilized to consume a plurality of particle damping kinetic energy, the particle damping kinetic energy is converted into elastic collision energy consumption and friction energy consumption, so that the vibration energy of the crankshaft assembly and the compressor is consumed, the mechanical vibration noise of the compressor is improved, the shock absorption function of the compressor is realized, the oil-gas separation is realized through the friction between the mixed air flow and the particle damping on the surface of the particle damping after entering the inner cavity of the crankshaft, the separated frozen oil flows to each bearing of the compressor to lubricate the bearings of the compressor, the outflow of the frozen oil in the compressor is reduced, and the separated gas can reach the movable vortex disc of the compressor to provide back pressure for the stable operation of the movable vortex disc, so that the problem that the vortex compressor in the prior art cannot stably operate at a high speed is solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

FIG. 1 shows a cross-sectional view of a first embodiment of a crankshaft assembly according to the present invention;

FIG. 2 illustrates a partial enlarged view of the crankshaft assembly shown in FIG. 1 at A;

FIG. 3 shows a cross-sectional view of a second embodiment of a crankshaft assembly according to the present invention;

FIG. 4 illustrates a partial schematic view of the crankshaft assembly shown in FIG. 3;

FIG. 5 shows a cross-sectional view of a third embodiment of a crankshaft assembly according to the present invention;

FIG. 6 illustrates a partial schematic view of a shock absorber of the crankshaft assembly shown in FIG. 4;

FIG. 7 illustrates a combined schematic view of a plurality of particulate damping of a shock absorber of the crankshaft assembly illustrated in FIGS. 1, 3 and 5;

FIG. 8 shows a schematic structural view of a first embodiment of the particulate damping shown in FIG. 7;

FIG. 9 shows a schematic structural view of a second embodiment of the particulate damping shown in FIG. 7;

FIG. 10 illustrates a schematic view of a bulkhead of a shock absorber of the crankshaft assembly shown in FIG. 3;

FIG. 11 illustrates a cross-sectional view of a throttle pin of the crankshaft assembly illustrated in FIGS. 1, 3 and 5;

FIG. 12 illustrates a front view of a throttle pin of the crankshaft assembly shown in FIG. 11;

FIG. 13 shows a cross-sectional view of an embodiment of a compressor according to the present invention;

fig. 14 shows a partial enlarged view of the compressor shown in fig. 13 at B.

Wherein the above figures include the following reference numerals:

1. A housing; 10. a housing return port;

2. A motor;

3. A crankshaft assembly; 30. a crankshaft; 301. a main shaft section; 302. an eccentric shaft section; 300. an inner hole of the crankshaft; 310. a vibration damping hole chamber; 320. a back pressure channel; 31. a damper; 311. super oleophobic metal dense pore network; 312. particle damping; 3120. a damping body; 3121. a protrusion; 3122. pit; 313. a partition plate; 3131. a first separator; 3132. a second separator; 314. a through hole; 32. an impurity filter; 33. a lubrication channel; 330. an oil guiding groove; 331. a first lubrication channel; 332. a second lubrication channel; 333. a third lubrication channel; 34. a throttle pin;

4. a bracket;

5. An orbiting scroll; 50. a back pressure chamber; 51. a movable disk main body; 52. an eccentric shaft sleeve; 520. a third oil flow hole;

6. A fixed scroll;

7. A front cover; 70. a front cover discharge port;

8. a bearing assembly; 81. a housing bearing; 810. a first oil drain hole; 82. a support bearing; 820. a second oil hole; 83. a movable disc bearing;

9. An exhaust flow tube; 91. a first pipe section; 92. a second pipe section.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

As shown in fig. 1 to 14, the present invention provides a crankshaft assembly including: the crankshaft 30, the crankshaft 30 is provided with a crankshaft inner hole 300, the crankshaft inner hole 300 penetrates through two ends of the crankshaft 30, and the crankshaft inner hole 300 comprises a damping hole 310; a damper 31, the damper 31 including a plurality of particle dampers 312 for filling in the damper orifice chamber 310; an impurity filter 32, the impurity filter 32 being disposed in the vibration damping hole chamber 310 and being located at one end of the vibration damping hole chamber 310; the centerline of the vibration damping chamber 310 is collinear with the centerline of the crankshaft 30, the first end of the vibration damping chamber 310 is flush with the first end of the crankshaft 30, the second end of the vibration damping chamber 310 is spaced from the second end of the crankshaft 30, and the impurity filter 32 is located at the first end of the vibration damping chamber 310.

In this way, the crankshaft assembly of the invention consumes the kinetic energy of a plurality of particle dampers 312 by installing the shock absorber 31 and the impurity filter 32 comprising a plurality of particle dampers 312 in the crankshaft 30, and converts the kinetic energy of the particle dampers 312 into elastic collision energy consumption and friction energy consumption by utilizing the collision and impact among the particle dampers 312, thereby consuming the vibration energy of the crankshaft assembly and the compressor, improving the mechanical vibration noise of the compressor, realizing the function of damping the compressor, enabling mixed air flow to flow through the surface of the particle dampers 312 after entering the inner cavity of the crankshaft, and rub with the particle dampers 312 to generate oil-gas separation, enabling the separated frozen oil to flow to each bearing of the compressor for lubricating the bearings of the compressor, reducing the outflow of the frozen oil in the compressor, and enabling the separated air to reach the movable scroll 5 of the compressor to provide back pressure for the stable operation of the movable scroll 5, thereby solving the problem that the scroll compressor in the prior art cannot stably operate at high speed operation.

Specifically, the amount of back pressure required by the orbiting scroll 5 may be adjusted by the diameter and fill rate of the particulate damper 312.

In an embodiment of the invention not shown, the centerline of the damping orifice chamber 310 and the centerline of the crankshaft 30 may also be non-collinear.

In an embodiment of the invention, not shown, the first end of the damping well 310 is spaced from the first end of the crankshaft 30, the second end of the damping well 310 is flush with the second end of the crankshaft 30, and the impurity filter 32 is located at the second end of the damping well 310.

As shown in fig. 3 and 4, the damper 31 includes a partition plate 313 provided in the damper orifice chamber 310 to divide the damper orifice chamber 310 into a plurality of orifice sections, and a plurality of through holes 314 are provided in the partition plate 313 at intervals.

In this way, the diaphragm 313 is able to provide a certain displacement limitation of the corresponding particle damping 312.

As shown in fig. 3 and 4, the cross section of the through hole 314 may be polygonal or circular, so as to perform full-band noise reduction on the air flow in the vibration damping hole chamber 310 by using the noise reduction effect of the holes with different shapes on the air flow with different frequencies; and/or at least one of the thickness of the diaphragm 313 and the position of the diaphragm 313 within the damping orifice chamber 310 is adjustably arranged to adjust the volume of the respective two orifice segments to thereby adjust the damping frequency of the damper 31; and/or the number of baffles 313 may be adjustably positioned to adjust the number of orifice segments within damping orifice chamber 310 to thereby adjust the damping frequency of damper 31.

As shown in fig. 3 and 4, the damper 31 includes a first partition 3131 and a second partition 3132 provided in the damper bore chamber 310 at intervals along the center line of the crankshaft 30, the first partition 3131 and the second partition 3132 dividing the damper bore chamber 310 into a first bore section, a second bore section and a third bore section.

Specifically, the area of the bore section of the first bore section is smaller than the area of the bore section of the second bore section, which is smaller than the area of the bore section of the third bore section.

As shown in fig. 1, 3, 4 and 5, a lubrication passage 33 is provided on the crankshaft 30, one end of the lubrication passage 33 communicates with the crankshaft inner bore 300, and the other end of the lubrication passage 33 extends to the outer peripheral surface of the crankshaft 30.

As shown in fig. 2, an oil guide groove 330 is provided on the inner wall surface of the lubrication passage 33 in order to accelerate the flow velocity of the refrigerant oil.

Preferably, the oil guide groove 330 is a wave-shaped groove body extending in the extending direction of the lubrication passage 33.

As shown in fig. 1, 3, 4 and 5, the number of lubrication passages 33 is plural, and the plural lubrication passages 33 are arranged at intervals along the center line of the crankshaft 30.

Specifically, the plurality of lubrication channels 33 includes: the first lubrication channel 331 and the second lubrication channel 332, the first lubrication channel 331 and the second lubrication channel 332 are both communicated with the vibration damping hole chamber 310 and are respectively arranged near two ends of the vibration damping hole chamber 310.

As shown in fig. 5, the damper 31 includes a super-oleophobic metal closed-pore network 311, the super-oleophobic metal closed-pore network 311 being disposed within the damper chamber 310 and connected to the impurity filter 32, and a plurality of particle dampers 312 being located within the super-oleophobic metal closed-pore network 311.

Specifically, the super-oleophobic metal closed pore network 311 and the plurality of particle damping 312 are integrated, the super-oleophobic metal closed pore network 311 is a cylinder, the outer diameter of the cylinder is the same as the minimum inner diameter of the vibration damping pore chamber 310, and the frozen oil can seep out through the super-oleophobic metal closed pore network 311 and enter the lubrication channel 33.

As shown in fig. 8 and 9, the particle damper 312 includes a damper body 3120, the damper body 3120 being a sphere, the particle damper 312 further including: a plurality of protrusions 3121, the plurality of protrusions 3121 being disposed on an outer circumferential surface of the damping body 3120 at intervals; and/or a plurality of pits 3122, the plurality of pits 3122 being disposed on an outer circumferential surface of the damping body 3120 at intervals.

In this way, surface wear of the plurality of particle damping 312 during friction can be reduced.

Specifically, the material, particle size, shape, etc. of the particle damping 312 in the different bore sections may be the same or different.

According to the "optimal tuning" principle of the tuned mass damper, the total mass M of the plurality of particulate dampers 312 and the total mass M of the crankshaft assembly should satisfyWherein/>。

As shown in fig. 1, 3,4 and 5, the crankshaft inner bore 300 includes a back pressure passage 320 connected to the vibration damping hole chamber 310, one end of the back pressure passage 320 remote from the vibration damping hole chamber 310 extends to a second end of the crankshaft 30, and a center line of the back pressure passage 320 is spaced apart from a center line of the crankshaft 30; the crankshaft 30 includes a main shaft section 301 and an eccentric shaft section 302 connected, and the vibration damping chamber 310 is entirely located on the main shaft section 301, and at least part of the back pressure passage 320 is located on the eccentric shaft section 302.

Thus, the refrigerant provides back pressure for the stable operation of the movable scroll 5 after passing through the back pressure channel 320, so that the stable operation of the movable scroll 5 can be ensured, the leakage of the compressor is reduced, and the volumetric efficiency of the compressor is improved.

As shown in fig. 11 and 12, the crankshaft assembly includes a throttle pin 34 provided in the back pressure passage 320 and interference-connected with the back pressure passage 320, and the throttle pin 34 is provided with threads on an outer circumferential surface thereof so as to enclose a spiral flow passage with an inner wall surface of the back pressure passage 320.

As shown in fig. 1,3, 4 and 5, the plurality of lubrication passages 33 further includes a third lubrication passage 333 provided on the eccentric shaft section 302, one end of the third lubrication passage 333 communicates with the back pressure passage 320, and the other end of the third lubrication passage 333 extends onto the outer peripheral surface of the crankshaft 30.

As shown in fig. 13 and 14, the present invention further provides a compressor including the above crankshaft assembly, the compressor further including: the shell 1, the shell 1 includes the holding cavity and opening part connected, the shell 1 locates in holding cavity; the motor 2 is arranged in the accommodating cavity, and a rotor of the motor 2 is sleeved on the crankshaft assembly 3 to drive the crankshaft assembly 3 to rotate; the bracket 4 is arranged in the accommodating cavity; the movable vortex plate 5 is sleeved on the crankshaft assembly 3 and is positioned on one side of the bracket 4 far away from the motor 2; a fixed scroll 6, the fixed scroll 6 is installed in the accommodating chamber and located at one side of the movable scroll 5 away from the motor 2 to form a back pressure chamber 50 with the movable scroll 5 assembly; a front cover 7, the front cover 7 being connected to the housing 1 and located at the opening; the bearing assembly 8, the bearing assembly 8 includes shell bearing 81, bracket bearing 82 and movable disc bearing 83 which are arranged at intervals along the rotation axis of the crankshaft assembly 3 in sequence, the crankshaft assembly 3 is connected with the shell 1 through the shell bearing 81, the crankshaft assembly 3 is connected with the bracket 4 through the bracket bearing 82, and the movable disc 5 is connected with the fixed disc 6 through the movable disc bearing 83; wherein, be provided with casing backward flow mouth 10 on the casing 1, be provided with protecgulum discharge port 70 on the protecgulum 7, the compressor still includes exhaust flow tube 9, and exhaust flow tube 9 is located casing 1 outside and exhaust flow tube 9 includes the first pipeline section 91 that both ends are connected with casing backward flow mouth 10 and protecgulum discharge port 70 respectively.

In addition, the exhaust flow pipe 9 further includes a second pipe section 92, one end of the second pipe section 92 is connected to the first pipe section 91, and the other end of the second pipe section 92 is connected to the refrigeration cycle system.

Specifically, the compressor of the invention is a scroll compressor, the movable scroll 5 is driven by the crankshaft assembly 3 to rotate, and is meshed with the fixed scroll 6 in the rotating process, so as to form a plurality of closed compression chambers with different sizes and continuously changing volumes, namely a back pressure chamber 50, the back pressure chamber 50 is communicated with the back pressure channel 320, and a refrigerant enters the back pressure chamber 50 after passing through the back pressure channel 320, so that back pressure is provided for stable operation of the movable scroll 5; wherein the second lubrication passage 332 and the third lubrication passage 333 are both in communication with the back pressure chamber 50.

Alternatively, the magnitude of the pressure of the back pressure chamber 50 may be adjusted according to the energy saving capability of the throttle pin 34 or the assembly tolerance between the throttle pin 34 and the back pressure passage 320.

As shown in fig. 13, the crankshaft assembly 3 is the above-described crankshaft assembly; wherein, the shell bearing 81 is arranged corresponding to the first lubrication channel 331, and a first oil hole 810 for communicating with the first lubrication channel 331 is arranged on the shell bearing 81; and/or the bracket bearing 82 is disposed corresponding to the second lubrication passage 332, and the bracket bearing 82 is provided with a second oil hole 820 for communicating with the second lubrication passage 332.

As shown in fig. 13 and 14, the crankshaft assembly 3 is the above-described crankshaft assembly; the movable vortex plate 5 comprises a movable plate main body 51 and an eccentric shaft sleeve 52 which are connected, the movable plate main body 51 is sleeved on the main shaft section 301, the eccentric shaft sleeve 52 is sleeved on the eccentric shaft section 302, and the movable plate bearing 83 is sleeved on the eccentric shaft sleeve 52; the eccentric sleeve 52 is provided with a third oil hole 520 for communicating with the third lubrication passage 333.

Therefore, the crankshaft assembly can split the oil-gas separated refrigerating oil to each bearing so as to lubricate all the bearings of the compressor, reduce bearing wear and ensure the reliable operation of the compressor.

The working process of the compressor of the invention is as follows:

(1) A first portion of the exhaust gas flow exiting the front cover discharge port 70 of the front cover 7 re-enters the compressor through a first pipe segment 91 and a second portion enters the refrigeration cycle through a second pipe segment 92.

(2) A first portion of the exhaust gas flow is a mixture of refrigerant and refrigeration oil, which is first filtered by the impurity filter 32 and then enters the vibration damping hole 310; then, through the gaps between the plurality of particle dampers 312 of the shock absorber 31 and the gaps between the shock absorbing hole chambers 310 and the corresponding particle dampers 312, the pressure becomes smaller due to being throttled in the process; meanwhile, the first part of the exhaust gas flow passes through the protrusions 3121 or the pits 3122 of the particle damper 312 to generate refractive collision, so that the refrigerant in the first part of the exhaust gas flow is separated from the refrigerant oil, and the separated refrigerant oil flows into the bottom of the vibration reduction hole chamber 310 by gravity and flows into the housing bearing 81 along the first lubrication channel 331 and the first oil flow hole 810 to lubricate the housing bearing 81; the remaining substances in the first part of the exhaust gas flow will continue to flow and separate in the vibration damping hole chamber 310 along the direction approaching the front cover 7, and a part of the separated frozen oil will flow into the bracket bearing 82 through the second lubrication channel 332 and the second oil hole 820 in sequence to lubricate the bracket bearing 82; another portion of the re-separated frozen oil flows into the movable-disc bearing 83 through the third lubrication passage 333 and the third oil hole 520 to lubricate the movable-disc bearing 83.

(3) While the refrigerant oil flows along the second lubrication passage 332 and the third lubrication passage 333, the remaining refrigerant after multiple separation in the first portion of the exhaust gas flow enters the back pressure passage 320 and flows along the spiral flow path between the throttle pin 34 and the back pressure passage 320; the refrigerant after the further throttle pressure drop enters the back pressure chamber 50 to provide a proper back pressure for the rotation of the orbiting scroll 5.

From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

The crankshaft assembly of the present invention includes: the crankshaft 30, the crankshaft 30 is provided with a crankshaft inner hole 300, the crankshaft inner hole 300 penetrates through two ends of the crankshaft 30, and the crankshaft inner hole 300 comprises a damping hole 310; a damper 31, the damper 31 including a plurality of particle dampers 312 for filling in the damper orifice chamber 310; an impurity filter 32, the impurity filter 32 being disposed in the vibration damping hole chamber 310 and being located at one end of the vibration damping hole chamber 310; the centerline of the vibration damping chamber 310 is collinear with the centerline of the crankshaft 30, the first end of the vibration damping chamber 310 is flush with the first end of the crankshaft 30, the second end of the vibration damping chamber 310 is spaced from the second end of the crankshaft 30, and the impurity filter 32 is located at the first end of the vibration damping chamber 310. In this way, the crankshaft assembly of the invention consumes the kinetic energy of a plurality of particle dampers 312 by installing the shock absorber 31 and the impurity filter 32 comprising a plurality of particle dampers 312 in the crankshaft 30, and converts the kinetic energy of the particle dampers 312 into elastic collision energy consumption and friction energy consumption by utilizing the collision and impact among the particle dampers 312, thereby consuming the vibration energy of the crankshaft assembly and the compressor, improving the mechanical vibration noise of the compressor, realizing the function of damping the compressor, enabling mixed air flow to flow through the surface of the particle dampers 312 after entering the inner cavity of the crankshaft, and rub with the particle dampers 312 to generate oil-gas separation, enabling the separated frozen oil to flow to each bearing of the compressor for lubricating the bearings of the compressor, reducing the outflow of the frozen oil in the compressor, and enabling the separated air to reach the movable scroll 5 of the compressor to provide back pressure for the stable operation of the movable scroll 5, thereby solving the problem that the scroll compressor in the prior art cannot stably operate at high speed operation.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present application, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present application.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (18)

1. A crankshaft assembly, comprising:

The crankshaft (30), a crankshaft inner hole (300) is arranged on the crankshaft (30), the crankshaft inner hole (300) penetrates through two ends of the crankshaft (30), and the crankshaft inner hole (300) comprises a damping hole chamber (310);

-a damper (31), the damper (31) comprising a plurality of particle damping (312) for filling within the damping orifice chamber (310);

An impurity filter (32), wherein the impurity filter (32) is arranged in the vibration reduction hole chamber (310) and is positioned at one end of the vibration reduction hole chamber (310);

The center line of the vibration reduction hole chamber (310) is collinear with the center line of the crankshaft (30), the first end of the vibration reduction hole chamber (310) is flush with the first end of the crankshaft (30), the second end of the vibration reduction hole chamber (310) is spaced from the second end of the crankshaft (30), and the impurity filter (32) is located at the first end of the vibration reduction hole chamber (310).

2. A crankshaft assembly according to claim 1, wherein the damper (31) comprises a partition (313) disposed within the damper bore (310) to divide the damper bore (310) into a plurality of bore sections, the partition (313) having a plurality of through-holes (314) spaced apart therein.

3. A crankshaft assembly as claimed in claim 2, wherein,

The cross section of the through hole (314) is polygonal or circular; and/or

At least one of the thickness of the diaphragm (313) and the position of the diaphragm (313) within the vibration damping bore (310) is adjustably arranged to adjust the volume of the respective two bore sections; and/or

The number of baffles (313) is adjustably positioned to adjust the number of orifice segments within the damping orifice chamber (310).

4. The crankshaft assembly of claim 2, wherein the damper (31) includes first and second partitions (3131, 3132) disposed within the damper bore chamber (310) at intervals along a centerline of the crankshaft (30), the first and second partitions (3131, 3132) separating the damper bore chamber (310) into first, second and third bore sections.

5. The crankshaft assembly of claim 4, wherein an area of a bore section of the first bore section is smaller than an area of a bore section of the second bore section, the area of the bore section of the second bore section being smaller than the area of the bore section of the third bore section.

6. A crankshaft assembly according to claim 1, wherein a lubrication channel (33) is provided on the crankshaft (30), one end of the lubrication channel (33) communicates with the crankshaft inner bore (300), and the other end of the lubrication channel (33) extends onto the outer circumferential surface of the crankshaft (30).

7. The crankshaft assembly according to claim 6, wherein an oil guide groove (330) is provided on an inner wall surface of the lubrication passage (33).

8. The crankshaft assembly according to claim 6, wherein the number of lubrication channels (33) is plural, and a plurality of the lubrication channels (33) are arranged at intervals along a center line of the crankshaft (30).

9. The crankshaft assembly according to claim 8, wherein a plurality of the lubrication channels (33) comprises:

The first lubrication channel (331) and the second lubrication channel (332), the first lubrication channel (331) and the second lubrication channel (332) are both communicated with the vibration damping hole chamber (310) and are respectively arranged close to two ends of the vibration damping hole chamber (310).

10. The crankshaft assembly according to claim 1, wherein the damper (31) comprises a super-oleophobic metal closed pore network (311), the super-oleophobic metal closed pore network (311) being disposed within the damper bore chamber (310) and being connected to the impurity filter (32), the plurality of particle damping (312) being located within the super-oleophobic metal closed pore network (311).

11. The crankshaft assembly of claim 1, wherein the particulate damper (312) includes a damper body (3120), the damper body (3120) being a sphere, the particulate damper (312) further comprising:

a plurality of protrusions (3121), the plurality of protrusions (3121) being disposed on an outer circumferential surface of the damping body (3120) at intervals; and/or

A plurality of pits (3122), the plurality of pits (3122) being disposed at intervals on an outer circumferential surface of the damping body (3120).

12. The crankshaft assembly of claim 1, wherein a total mass M of the plurality of particulate dampers (312) and a total mass M of the crankshaft assembly are to satisfyWherein/>。

13. A crankshaft assembly as claimed in any one of claims 1 to 12, wherein,

The crankshaft inner hole (300) comprises a back pressure channel (320) connected with the vibration reduction hole chamber (310), one end of the back pressure channel (320) far away from the vibration reduction hole chamber (310) extends to a second end of the crankshaft (30), and the center line of the back pressure channel (320) is arranged at intervals with the center line of the crankshaft (30);

The crankshaft (30) comprises a main shaft section (301) and an eccentric shaft section (302) which are connected, the damping hole chamber (310) is all positioned on the main shaft section (301), and at least part of the back pressure channel (320) is positioned on the eccentric shaft section (302).

14. The crankshaft assembly according to claim 13, characterized in that the crankshaft assembly includes a throttle pin (34) provided in the back pressure passage (320) and in interference connection with the back pressure passage (320), and the throttle pin (34) is provided with threads on an outer peripheral surface so as to enclose a spiral flow passage with an inner wall surface of the back pressure passage (320).

15. The crankshaft assembly according to claim 13, characterized in that a third lubrication channel (333) is provided on the eccentric shaft section (302), one end of the third lubrication channel (333) being in communication with the back pressure channel (320), the other end of the third lubrication channel (333) extending onto the outer circumferential surface of the crankshaft (30).

16. A compressor comprising the crankshaft assembly of any one of claims 1 to 15, the compressor further comprising:

a housing (1), wherein the housing (1) comprises a containing cavity and an opening part which are connected, and the housing (1) is positioned in the containing cavity;

The motor (2) is arranged in the accommodating cavity, and a rotor of the motor (2) is sleeved on the crankshaft assembly to drive the crankshaft assembly to rotate;

A bracket (4), the bracket (4) being mounted in the accommodation chamber;

The movable vortex plate (5) is sleeved on the crankshaft assembly and is positioned on one side, far away from the motor (2), of the bracket (4);

a non-orbiting scroll (6), the non-orbiting scroll (6) being mounted in the receiving chamber and being located on a side of the orbiting scroll (5) remote from the motor (2) to form a back pressure chamber (50) with the orbiting scroll (5) assembly;

a front cover (7), wherein the front cover (7) is connected with the shell (1) and is positioned at the opening part;

The bearing assembly (8), the bearing assembly (8) comprises a shell bearing (81), a bracket bearing (82) and a movable disc bearing (83) which are sequentially arranged at intervals along the rotation axis of the crankshaft assembly, the crankshaft assembly is connected with the shell (1) through the shell bearing (81), the crankshaft assembly is connected with the bracket (4) through the bracket bearing (82), and the movable disc (5) is connected with the fixed disc (6) through the movable disc bearing (83);

The compressor comprises a shell (1), and is characterized in that a shell reflux port (10) is formed in the shell (1), a front cover discharge port (70) is formed in a front cover (7), the compressor further comprises an exhaust flow pipe (9), the exhaust flow pipe (9) is located outside the shell (1), and the exhaust flow pipe (9) comprises a first pipe section (91) of which two ends are respectively connected with the shell reflux port (10) and the front cover discharge port (70).

17. The compressor according to claim 16, wherein a plurality of lubrication passages (33) are provided on the crankshaft (30), one end of each lubrication passage (33) communicates with the crankshaft inner hole (300), and the other end of each lubrication passage (33) extends onto the outer peripheral surface of the crankshaft (30); the plurality of lubrication channels (33) comprise a first lubrication channel (331) and a second lubrication channel (332), and the first lubrication channel (331) and the second lubrication channel (332) are communicated with the vibration damping hole chamber (310) and are respectively arranged close to two ends of the vibration damping hole chamber (310); wherein,

The shell bearing (81) is arranged corresponding to the first lubrication channel (331), and a first oil hole (810) used for communicating with the first lubrication channel (331) is formed in the shell bearing (81); and/or

The bracket bearing (82) is arranged corresponding to the second lubrication channel (332), and a second oil hole (820) used for communicating with the second lubrication channel (332) is formed in the bracket bearing (82).

18. The compressor of claim 16, wherein the crankshaft bore (300) includes a back pressure passage (320) connected to the vibration damping bore chamber (310), an end of the back pressure passage (320) remote from the vibration damping bore chamber (310) extending to the second end of the crankshaft (30), a centerline of the back pressure passage (320) being spaced from a centerline of the crankshaft (30); the crankshaft (30) comprises a main shaft section (301) and an eccentric shaft section (302) which are connected, the damping hole chamber (310) is all positioned on the main shaft section (301), and at least part of the back pressure channel (320) is positioned on the eccentric shaft section (302); a third lubrication channel (333) is arranged on the eccentric shaft section (302), one end of the third lubrication channel (333) is communicated with the back pressure channel (320), and the other end of the third lubrication channel (333) extends to the outer peripheral surface of the crankshaft (30); the movable vortex plate (5) comprises a movable plate main body (51) and an eccentric shaft sleeve (52) which are connected, the movable plate main body (51) is sleeved on the main shaft section (301), the eccentric shaft sleeve (52) is sleeved on the eccentric shaft section (302), and the movable plate bearing (83) is sleeved on the eccentric shaft sleeve (52); the eccentric shaft sleeve (52) is provided with a third oil flowing hole (520) communicated with the third lubricating channel (333).