CN112177934A

CN112177934A - Balance assembly, dynamic vortex plate assembly, shafting assembly and compressor

Info

Publication number: CN112177934A
Application number: CN202010849813.3A
Authority: CN
Inventors: 李业林; 徐嘉; 史正良; 陈晓晓; 曲成林
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-01-05
Anticipated expiration: 2040-08-21
Also published as: CN112177934B

Abstract

The present disclosure provides a balance assembly, move whirlpool dish subassembly, shafting subassembly and compressor, balance assembly includes: the main balance structure is configured to move with a crankshaft of the compressor; the self-adaptive balancing structure comprises a slide block, wherein a heat sensing part is connected with the slide block, the heat sensing part is configured to deform along with the change of temperature, and the slide block is configured to change the position along with the deformation of the heat sensing part so as to counteract the centrifugal force of the crankshaft. The balance assembly disclosed by the invention is simple and reliable in structure, the heat sensing component deforms along with the temperature of the environment where the heat sensing component is located, and the radial eccentric amount can be adjusted according to the temperature change of the compressor and the running speed of the compressor. After the radial eccentricity is adjusted, partial or all centrifugal force of the movable disc is counteracted, and the contact stress between the movable disc and the fixed disc scroll plate is reduced or is in a non-contact state.

Description

Balance assembly, dynamic vortex plate assembly, shafting assembly and compressor

Technical Field

The disclosure belongs to the technical field of compressors, and particularly relates to a balance assembly, a movable scroll plate structure, a shafting assembly and a compressor.

Background

The scroll compressor has the advantages of small volume, light weight, continuous and stable air suction and exhaust, small vibration, small noise, low energy consumption and the like, and is generally applied to the fields of air-conditioning refrigeration, power engineering, transportation and the like. If the compressor runs for a long time, the friction of a motor and parts in the compressor generates more heat, so that the temperature in the compressor is increased, and further, the material is heated and deformed to cause the abrasion of a pump body; these wear caused by thermal deformation of the pump body can increase the noise and vibration of the compressor, and also cause the internal leakage of the pump body to increase, with the consequent increase in power consumption.

Disclosure of Invention

Therefore, the technical problem to be solved by the present disclosure is that the wear of the pump body of the compressor is increased due to the thermal change of the material, so as to provide a balance assembly, a movable scroll assembly, a shafting assembly and the compressor.

In order to solve the above problem, the present disclosure provides a balancing assembly including:

a main balance structure configured to be movable with a crankshaft of the compressor;

the self-adaptive balancing structure comprises a sliding block, a heat sensing part is connected with the sliding block, the heat sensing part is configured to deform along with the change of temperature, and the sliding block is configured to change the position along with the deformation of the heat sensing part so as to counteract the centrifugal force of the crankshaft.

The purpose of the present disclosure and the technical problems solved thereby can be further achieved by the following technical measures.

Optionally, the main balance structure is arranged on a movable scroll of the compressor and is integrated with the movable scroll.

Optionally, the adaptive balancing structure further includes a guide chute, the guide chute is arranged in the radial direction of the crankshaft of the main balancing structure, the slider is arranged in the guide chute, and the slider is configured to move in the radial direction of the crankshaft.

Optionally, the material density of the slider is greater than the material density of the main balance structure.

Optionally, the axial projection of the guide chute along the crankshaft is fan-shaped, and the axial projection of the slider along the crankshaft is fan-shaped.

Optionally, the thermal sensing component is made of a shape memory alloy, and the shape memory alloy includes a one-way shape memory alloy and a two-way shape memory alloy.

Optionally, the thermal sensing component is supported by a one-way shape memory alloy, and the thermal sensing component is configured such that when the temperature rises to a preset value, the size of the thermal sensing component changes, and the change is proportional to the temperature.

Optionally, the slider is further connected with an elastic member, and the elastic member is configured to apply an external force to restore the thermal sensing component to the original size when the temperature drops to a preset value.

Optionally, the thermal sensing component is supported by a one-way shape memory alloy, and is configured such that when the temperature rises to a preset value, the size of the thermal sensing component changes, and the change is proportional to the temperature, and when the temperature falls to the preset value, the thermal sensing component returns to the original size.

Optionally, the preset value is 80-100 ℃.

Optionally, the shape memory alloy is any one of a binary memory alloy and a ternary memory alloy.

Optionally, the binary memory alloy is any one of Ni-Ti system, Cu-based system and Fe-based system, and/or the ternary memory alloy is any one of Ni-Ti system, Cu-based system and Fe-based system.

Optionally, the guide chute is provided on an outer circumferential surface of the main balance structure, and the main balance structure further includes a cover plate installed on the opening of the guide chute.

Optionally, an inner arc side surface of the guide chute, which is close to the axis of the crankshaft, is a bottom wall of the groove, an inner arc side surface of the slider, which is close to the axis of the crankshaft, is a first side surface, and one end of the thermal sensing component is connected with the bottom wall of the groove, and the other end of the thermal sensing component is connected with the first side surface.

Optionally, the bottom wall of the tank is provided with a first fixing portion, the first side surface is provided with a second fixing portion, and the thermal sensing component is connected with the bottom wall of the tank through the first fixing portion and connected with the first side surface through the second fixing portion.

Optionally, when the sliding block is connected with the elastic element, the outer arc side surface of the sliding block, which is far away from the axis of the crankshaft, is a second side surface, one end of the elastic element is connected with the second side surface, and the other end of the elastic element is connected with the inner side surface of the cover plate.

Optionally, the second side is provided with a third fixing portion, the inner side of the cover plate is provided with a fourth fixing portion, and the elastic member is connected with the second side through the third fixing portion and connected with the inner side of the cover plate through the fourth fixing portion.

Optionally, the number of the thermal sensing components is at least two, and the number of the first fixing parts and the number of the second fixing parts are the same as the number of the thermal sensing components; and/or the number of the elastic pieces is at least two, and the number of the third fixing parts and the number of the fourth fixing parts are the same as that of the elastic pieces.

Alternatively, the number of the heat sensing parts is greater than the number of the elastic members, or the number of the heat sensing parts is less than the number of the elastic members.

Optionally, the thickness of the sliding block along the radial direction of the crankshaft is t, the depth of the guide chute along the radial direction of the crankshaft is k, and k/5 is equal to or greater than a/(k-a) and equal to or less than 4 k/5.

Optionally, a central angle corresponding to the guide sliding groove is alpha, a central angle corresponding to the sliding block is beta, and beta is equal to or less than alpha; and/or the fit clearance between the slide block and the guide chute is 0.1mm-1 mm.

Optionally, a lubricating medium is arranged in the guide sliding groove, and the lubricating medium is configured to reduce the frictional resistance between the sliding block and the guide sliding groove; and/or, the opening part of the guide sliding groove is provided with a sealing groove, a sealing ring is arranged in the sealing groove, and the cover plate can seal the guide sliding groove when being installed on the opening of the guide sliding groove.

Optionally, an oil guide through hole communicated to the inside of the guide chute is formed in the side wall of the guide chute, and the oil guide through hole is configured to fill a lubricating medium into the guide chute.

A dynamic vortex disk assembly adopts the balance assembly.

A shafting assembly adopts the balance assembly.

Optionally, the shafting assembly further includes a crankshaft and at least one auxiliary balance structure, and the auxiliary balance structure is disposed on the crankshaft at the axial end of the motor portion.

Optionally, the auxiliary balance structure includes a counterweight portion and a shroud plate portion, the shroud plate portion includes an end plate and a shroud plate, and the shroud plate portion is configured to enable the auxiliary balance structure to form a fully-wrapped shape, so that wind resistance of the auxiliary balance structure to airflow inside the compressor can be avoided.

A compressor adopts the balance assembly, the movable scroll disk or the shafting assembly.

The balance assembly, the orbiting scroll assembly, the shafting assembly and the compressor provided by the disclosure have at least the following beneficial effects:

according to the balance assembly disclosed by the invention, the thermal sensing component deforms along with the temperature of the environment where the thermal sensing component is located, the centrifugal force of the movable disc or the crankshaft can be automatically reduced or counteracted according to the temperature, and meanwhile, the condition of contact abrasion of the side wall of the volute of the movable disc and the volute of the static disc is also avoided. The structure is simple and reliable, and the radial eccentric amount can be adjusted according to the temperature change of the compressor and the running speed of the compressor. After the radial eccentricity is adjusted, partial or all centrifugal force of the movable disc is counteracted, and the contact stress between the movable disc and the fixed disc scroll plate is reduced or is in a non-contact state.

Drawings

FIG. 1 is an exploded view of a balance assembly of an embodiment of the present disclosure;

fig. 2 is a cross-sectional view of an adaptive balancing structure of a balancing assembly according to an embodiment of the present disclosure and a working state when a temperature does not reach a preset value;

FIG. 3 illustrates an operating state of the adaptive balancing structure of the balancing assembly according to an embodiment of the disclosure when the temperature reaches a predetermined value;

fig. 4 is an exploded view of a structure of a balance assembly when a main balance structure of an embodiment of the present disclosure is integrated with an orbiting scroll;

FIG. 5 is a schematic structural view of a main balance structure integrated with an orbiting scroll according to an embodiment of the present disclosure;

FIG. 6 is a cross-sectional structural view of a primary counterbalance assembly of an embodiment of the present disclosure;

FIG. 7 is a structural perspective view of a slider of an embodiment of the present disclosure;

FIG. 8 is a structural cross-sectional view of a slider according to an embodiment of the present disclosure;

FIG. 9 is a top view of a structure of a slider of an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of a shafting assembly according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of a secondary balancing structure according to an embodiment of the present disclosure;

fig. 12 is a schematic structural view of a compressor according to an embodiment of the present disclosure.

The reference numerals are represented as:

1. a primary balance structure; 2. a slider; 3. a compressor; 4. a crankshaft; 5. a movable scroll pan; 6. a guide chute; 7. a cover plate; 8. a screw; 9. a tank bottom wall; 10. a first side surface; 11. a first fixed part; 12. a second fixed part; 13. an elastic member; 14. a second side surface; 15. a third fixed part; 16. a fourth fixing part; 17. an oil guide through hole; 18. a secondary balance structure; 19. a counterweight portion; 20. a cover plate portion; 21. an end plate; 22. enclosing plates; 23. a heat sensing member; 24. a motor section.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, the following embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings. It is to be understood that the described embodiments are merely a subset of the disclosed embodiments and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

As shown in connection with fig. 1-9, the present disclosure provides a counterbalance assembly comprising: a main balance structure 1, the main balance structure 1 being configured to be movable with a crankshaft 4 of a compressor 3; the self-adaptive balancing structure comprises a sliding block 2, a heat sensing part 23 is connected with the sliding block 2, the heat sensing part 23 is configured to deform along with the change of temperature, and the sliding block 2 is configured to change the position along with the deformation of the heat sensing part 23 so as to counteract the centrifugal force of the movable scroll disk 5.

According to the balance assembly disclosed by the invention, the heat sensing component deforms along with the temperature of the environment where the heat sensing component is located, the centrifugal force of the movable disc or the crankshaft can be automatically reduced or counteracted according to the temperature, and meanwhile, the condition of contact abrasion of the side wall of the volute of the movable disc and the volute of the static disc is also avoided.

The balance assembly disclosed by the disclosure is simple and reliable in structure, and not only can adjust the radial eccentricity according to the temperature change of the compressor, but also can adjust the radial eccentricity according to the running speed of the compressor. After the radial eccentricity is adjusted, partial or all centrifugal force of the movable disc is offset, contact stress between the movable disc and the static disc scroll plate is reduced or is in a non-contact state, and the problem of abrasion between the side walls of the movable disc and the static disc scroll is solved.

The balance assembly of the present disclosure may be of an integrated or split design. The integrated design is to design the main balance structure 1 and a structural part which needs to counteract centrifugal force into a whole, and then assemble the structure on a crankshaft. And split type, the main balance structure 1 and a structural part which needs to offset centrifugal force are respectively assembled on the crankshaft. Both designs can achieve the technical goals of the embodiments of the present disclosure. The integrated structure is preferably used in a scroll compressor, while the split structure can move on a rotor compressor, a piston compressor and any other compressor with an eccentric balance structure to solve the problem of eccentric wear of a pump body of the compressors under high-speed operation and/or long-term operation.

Optionally, the main balance structure 1 is arranged on the movable scroll disk 5 of the compressor 3, and is integrated with the movable scroll disk 5, so that the assembly steps of the balance device and the movable scroll disk 5 are saved, and the position precision is guaranteed.

Optionally, the adaptive balancing structure further includes a guide chute 6, the guide chute 6 is opened in the radial direction of the crankshaft 4 of the main balancing structure 1, the slider 2 is disposed in the guide chute 6, and the slider 2 is configured to move in the radial direction of the crankshaft 4. Therefore, the slide block 2 is far away from the axis of the crankshaft 4 along with the increase of the temperature and the rotating speed, and the effect of adjusting the eccentricity is achieved. Although the slide block 2 tends to slide outwards in the high-speed running process, the slide block 2 is subjected to the acting force of the thermal induction component 23, the outward sliding tendency of the slide block 2 is limited to a certain extent, and the stability of the structure for adjusting the eccentric amount is greatly improved compared with the structure of simply using an elastic component.

Optionally, the material density of the slider 2 is greater than the material density of the main balance structure 1. The weight of a balance weight required by the compressor is calculated according to the moment balance of the shafting, the material of the sliding block 2 is selected according to the weight of the balance weight, and the larger the density of the sliding block 2 selected by the compressor of the same balance shafting is, the smaller the volume of the sliding block 2 is.

Optionally, the guide chute 6 is shaped like a sector ring in the axial projection of the crankshaft 4, and the slider 2 is shaped like a sector ring in the axial projection of the crankshaft 4. The fan-shaped sliding groove can limit the fan-shaped sliding block to slide along the radial direction of the crankshaft. Optionally, a round hole or a square hole may be used, and a corresponding limiting structure, such as a limiting surface, a boss, a clamping groove, a snap spring, etc., is provided, so that the slider 2 slides along the radial direction of the crankshaft 4.

Optionally, thermal sensing element 23 is formed from a shape memory alloy, including one-way shape memory alloys and two-way shape memory alloys. One-way memory alloys change shape (hot phase shape) after increasing temperature, but this deformation is irreversible after decreasing temperature and requires some force to return to compression. The two-way shape memory alloy can recover the shape of a high-temperature phase when heated and recover the shape of a low-temperature phase when cooled. The thermal sensing member 23 of the present embodiment has different high-temperature phase shapes and low-temperature phase shapes, and can realize one-way or two-way deformation in response to a change in temperature.

The memory alloy has Shape Memory Effect (SME) which is the ability of memory alloys (SMAs) after cooling deformation to recover their original shape upon heating, and is a recovery by reversible martensitic transformation, and Superelasticity (SE). Superelasticity (SE) refers to the ability of a material to undergo plastic deformation to produce a strain well above the elastic limit, and to recover its original shape completely after the stress is removed.

Optionally, the thermal sensing member 23 is made of one-way shape memory alloy, and the thermal sensing member 23 is configured such that when the temperature rises to a preset value, the size of the thermal sensing member 23 changes and the amount of change is proportional to the temperature.

Optionally, an elastic member 13 is further connected to the slider 2, and the elastic member 13 is configured to apply an external force to restore the thermal sensing member 23 to its original size when the temperature drops to a preset value. The elastic member 13 is made of spring steel. The slider 2 is therefore also provided with a spring 13 to exert an external force after the temperature has dropped.

Optionally, the thermal sensing member 23 is made of one-way shape memory alloy, and the thermal sensing member 23 is configured to change the size of the thermal sensing member 23 when the temperature rises to a preset value, and the change amount is proportional to the temperature, and the thermal sensing member 23 returns to the original size when the temperature falls to the preset value.

Optionally, the preset value is 80-100 ℃, the memory alloy is selected according to the working temperature of the compressor, and if the temperature of the compressor is higher than 80 ℃, the thermal sensing component 23 starts to extend. Selecting a memory alloy of which the austenite temperature line Ac meets the preset working requirement, and when the temperature in the compressor is higher than the austenite temperature line Ac, gradually converting the memory alloy from a martensite phase to an austenite phase; when the temperature in the compressor is below this austenite temperature line Ac, the memory alloy will gradually transform from the austenite phase to the martensite phase.

Optionally, the shape memory alloy is any one of a binary memory alloy and a ternary memory alloy. Optionally, the binary memory alloy is any one of Ni-Ti system, Cu-based system and Fe-based system, and/or the ternary memory alloy is any one of Ni-Ti system, Cu-based system and Fe-based system. The memory alloys of the above types all have the characteristics of good biocompatibility, corrosion resistance, low elastic modulus, high phase transition temperature and the like.

Optionally, the guide chute 6 is arranged on the outer peripheral surface of the main balance structure 1, the main balance structure 1 further comprises a cover plate 7, the cover plate 7 is mounted on the opening of the guide chute 6 through a screw 8, the opening direction of the guide chute 6 faces outwards, processing and assembly of the sliding block 2 are facilitated, the cover plate 7 seals the guide chute 6, internal parts are prevented from falling off, and normal operation of the compressor is influenced.

Optionally, the inner arc side of the sliding guide groove 6 close to the axis of the crankshaft 4 is the groove bottom wall 9, the inner arc side of the sliding block 2 close to the axis of the crankshaft 4 is the first side 10, and one end of the thermal sensing component 23 is connected with the groove bottom wall 9, and the other end is connected with the first side 10. The bottom wall 9 of the groove is provided with a first fixing part 11, the first side surface 10 is provided with a second fixing part 12, and the heat induction component 23 is connected with the bottom wall 9 of the groove through the first fixing part 11 and is connected with the first side surface 10 through the second fixing part 12. The thermal sensing component 23 is arranged on the radial inner side of the slider 2, the length of a high-temperature phase of the thermal sensing component 23 is larger than that of a low-temperature phase, when the temperature rises to a preset value, the thermal sensing component 23 is changed from the low-temperature phase to the high-temperature phase, the length is increased, the slider 2 is pushed in the direction away from the crankshaft 4, and the centrifugal adjustment amount of the self-adaptive balance structure is increased.

Optionally, when the slider 2 is connected to the elastic member 13, the outer arc side of the slider 2 away from the axis of the crankshaft 4 is a second side 14, and one end of the elastic member 13 is connected to the second side 14 and the other end is connected to the inner side of the cover plate 7. The second side 14 is provided with a third fixing portion 15, the inner side of the cover plate 7 is provided with a fourth fixing portion 16, and the elastic member 13 is connected with the second side 14 through the third fixing portion 15 and connected with the inner side of the cover plate 7 through the fourth fixing portion 16. The elastic member 13 is provided in the heat sensing member 23, and the urging direction is opposite to that of the heat sensing member 23, so that the heat sensing member 23 is more effective in recovery.

Optionally, the number of the thermal sensing components 23 is at least two, and the number of the first fixing parts 11 and the second fixing parts 12 is the same as that of the thermal sensing components 23; and/or the number of the elastic pieces 13 is at least two, and the number of the third fixing parts 15 and the number of the fourth fixing parts 16 are the same as that of the elastic pieces 13.

The quantity of thermal induction part 23 and elastic component 13 increases, can promote the slider 2 in the stability of the gliding of guide way 6, also can promote the effort to slider 2 simultaneously, and the slider 2 that the quality is great is also promoted more easily.

Optionally, the number of the thermal sensing members 23 is greater than that of the elastic members 13, or the number of the thermal sensing members 23 is less than that of the elastic members 13 according to different requirements such as the shafting moment and the density of the sliders.

Optionally, the thickness of the sliding block 2 along the radial direction of the crankshaft 4 is t, the depth of the guide chute 6 along the radial direction of the crankshaft 4 is k, and k/5 is equal to or greater than a/(k-a) and equal to or less than 4 k/5. Can inject the thickness and the sliding distance of slider 2 within certain guide chute 6 degree of depth like this to ensure that slider 2 has reasonable thickness, slider 2 also can slide in the distance of setting for and adjust the eccentricity, and its stationarity at the slip in-process can be guaranteed to the slider 2 of reasonable thickness moreover, and the crooked degree of slider 2 is reduced.

Optionally, the central angle corresponding to the guide chute 6 is α, and the central angle corresponding to the slide block 2 is β, so that β is equal to or less than α, and the stability of the slide block 2 in the sliding process in the guide chute 6 is ensured; and/or the fit clearance between the slide block 2 and the guide chute 6 is 0.1mm-1mm, and the slide block 2 can slide stably in the guide chute 6 and can provide stable limit.

Optionally, an oil guide through hole 17 communicated to the inside of the guide chute 6 is formed in the side wall of the guide chute 6, and the oil guide through hole 17 is configured to fill a lubricating medium into the guide chute 6, so that the refrigerant oil in the compressor is favorably introduced into the guide chute 6, an oil film between the slider 2 and the guide chute 6 is in a lubricating state, the friction resistance between the slider 2 and the guide chute 6 is reduced, and the reliability of automatic balance adjustment of the main balance structure 1 is improved.

Optionally, an opening is not required on the side wall of the guide chute 6, and a lubricating medium is filled into the guide chute 6 directly before the cover plate 7 is buckled, wherein the lubricating medium is configured to reduce the friction resistance between the slider 2 and the guide chute 6; and/or, the opening part of the guide sliding groove 6 is provided with a sealing groove, a sealing ring is arranged in the sealing groove, and the cover plate 7 can seal the guide sliding groove 6 when being installed on the opening of the guide sliding groove 6, so that the leakage of a lubricating medium is prevented.

The balance assembly working process of the disclosure:

when the compressor runs for a long time at medium and low speed, the motor and each friction pair in the compressor generate more heat which can not be dissipated to the outside of the compressor quickly, and then the temperature of the working environment in the compressor rises, the heat deformation of the materials occurs in the internal parts of the compressor, in addition, the centrifugal force is applied to the moving scroll 5 in running, so that the side wall of the moving scroll and the side wall of the static scroll have contact tendency or contact, at this time, the distance between the slide block 2 and the guide chute 6 in the radial direction is L1, the distance between the slide block 2 and the cover plate 7 in the radial direction 1 is L2, meanwhile, the slide block 2 in the guide chute 6 on the main balance structure 1 arranged opposite to the moving scroll 5 is also influenced by the high temperature environment in the compressor at the heat induction component 23 made of the memory alloy, and the temperature at this time exceeds the austenite temperature Ac of the memory alloy of the heat induction component 23, that is, the preset value of the temperature in the embodiment, the thermal energy is converted into the mechanical energy, the mechanical energy is the acting force generated by the thermal sensing component 23 to the slider 2, and the acting force is larger than the elastic force generated by the elastic element 13 to the slider 2, the slider 2 slides in the opposite direction of the axial direction of the movable scroll 5, the thermal sensing component 23 also returns to the original extended high-temperature phase form, at this time, the distance between the slider 2 and the guide chute 6 in the radial direction is L3, the distance between the slider 2 and the cover plate 7 in the radial direction is L4, the partial or all centrifugal force of the movable scroll 5 is offset, the fit clearance between the movable scroll plate and the fixed scroll plate is increased, and the abrasion problem is solved. When the temperature in the compressor is reduced, the inside of the heat sensing component 23 changes into a martensite phase, and the shape of the heat sensing component 23 also returns to a compressed low-temperature phase form, namely, the distance between the slide block 2 and the guide chute 6 in the radial direction is returned to L1, the distance between the slide block 2 and the cover plate 7 in the radial direction is returned to L2, and the heat sensing component 23 plays a shape memory effect role of the memory alloy in the process of the cycle.

When the compressor runs at high speed, the movable disc generates larger centrifugal force, so that the side wall of the movable disc scroll and the side wall of the fixed disc scroll have contact tendency or contact, the distance between the slide block 2 and the guide chute 6 in the radial direction is L1, the distance between the slide block 2 and the cover plate 7 in the radial direction is L2, meanwhile, the slide block 2 in the guide chute 6 on the main balance structure 1 arranged opposite to the movable scroll 5 also generates larger centrifugal force, the centrifugal force is larger than the sum of the elastic force of the elastic piece 13 to the slide block 2 and the pulling force of the memory alloy thermal induction part 23, and simultaneously the pulling force also generates certain internal stress to the memory alloy thermal induction part 23, the internal stress causes the memory alloy thermal induction part 23 to generate elongated plastic deformation which far exceeds the strain of the elastic limit of the memory alloy thermal induction part 23, the slide block 2 slides in the opposite direction of the movable scroll disk 5, the distance between the slide block 2 and the guide chute 6 in the radial direction is L3, the distance between the slide block 2 and the cover plate 7 in the radial direction is L4, partial or all centrifugal force of the movable scroll disk 5 is offset, the fit clearance between the movable scroll disk plate and the fixed scroll disk plate is increased, and the abrasion problem is solved. When the rotation speed of the compressor is reduced, the centrifugal force generated by the orbiting scroll 5 and the sliding block 2 is reduced, that is, the centrifugal force is smaller than the elastic force of the elastic element 13, and at the same time, the internal stress is not generated on the thermal sensing component 23 made of the memory alloy material, and at the same time, the thermal sensing component 23 is restored to the original compressed state, that is, the distance between the sliding block 2 and the guide chute 6 in the radial direction is restored to L1, and the distance between the sliding block 2 and the cover plate 7 in the radial direction is restored to L2, and the thermal sensing component 23 plays the super-elastic role of the memory alloy in the circulation process.

When the rotation speed and temperature of the compressor are both high, the thermal sensing component 23 in the main balance structure 1 can simultaneously exert two functions of shape memory effect and superelasticity of the memory alloy, so that the two cycle processes of automatically adjusting balance are combined, and the abrasion of the side wall of the movable scroll and the side wall of the fixed scroll of the compressor can be avoided.

The present disclosure also provides an orbiting scroll assembly, which employs the above balance assembly.

As shown in connection with fig. 10-11, the present disclosure also provides a shafting assembly, employing the above-described balancing assembly.

Optionally, the shafting assembly further includes a crankshaft 4, at least one secondary balance structure 18, and the secondary balance structure 18 is disposed on the crankshaft 4 at the axial end of the motor portion 24. The auxiliary balance structure 18 comprises a counterweight part 19 and a shroud plate part 20, the shroud plate part 20 comprises an end plate 21 and a shroud plate 22, and the shroud plate part 20 is configured to enable the auxiliary balance structure 18 to form a fully-wrapped shape, so that wind resistance of the auxiliary balance structure 18 to airflow inside the compressor 3 can be avoided, power consumption of the motor is reduced, and operation efficiency of the motor is improved.

The counterweight part 19, the coaming 22 and the end plate 21 enclose the uncovered area into a closed cavity, refrigerant gas in the compressor can hardly enter the cavity, so that the wind resistance of the auxiliary balance structure 18 in the operation process is reduced, the power consumption, the noise and the vibration of the compressor are reduced, and the performance is improved. If not set up end plate 21, the air current that enters into bounding wall 22 inside can produce the resistance effect to balanced structure, and the balanced structure at motor portion 24 both ends blocks the effect difference to the air current to make the consumption of compressor motor increase, the inconsistent windage of upper and lower vice balanced structure also can the balance of shafting receive certain influence, the performance of compressor reduces.

The secondary balancing structure 18 of the present disclosure may also be used in rotary compressors, piston compressors and any other compressor with eccentric balancing structures.

As shown in fig. 12, the present disclosure also provides a compressor 3, which uses the above balance assembly, or the above orbiting scroll 5, or the above shafting assembly.

The compressor also comprises a shell, a stator, a machine head cover, a rear end cover and a static plate assembly. The stator is pressed into a preset position in the shell through cold pressing, the rear end cover is fixed at the rear end of the shell, then the assembled shafting assembly is arranged into the preset position in the shell, one end of a crankshaft 4 in the shafting assembly is assembled and enters an auxiliary bearing of the rear end cover, the back of the movable scroll disk 5 is assembled and is abutted against the end face of a support of the shafting assembly, then the static disk assembly is pressed into and assembled according to a positioning pin in the shafting assembly in the opposite direction of the movable scroll disk 5, and finally the static disk assembly is pressed tightly by the machine head cover and fixed on the shell.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The present disclosure is to be considered as limited only by the preferred embodiments and not limited to the specific embodiments described herein, and all changes, equivalents and modifications that come within the spirit and scope of the disclosure are desired to be protected. The foregoing is only a preferred embodiment of the present disclosure, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present disclosure, and these improvements and modifications should also be considered as the protection scope of the present disclosure.

Claims

1. A counterbalance assembly, comprising:

a main balancing structure (1), the main balancing structure (1) being configured to be movable with a crankshaft (4) of a compressor (3);

an adaptive balancing structure comprising a slider (2), a heat sensing member (23) being connected to the slider (2), the heat sensing member (23) being configured to be deformable in response to a change in temperature, the slider (2) being configured to change position in response to the deformation of the heat sensing member (23) so as to cancel a centrifugal force of a crankshaft (4).

2. The balancing assembly according to claim 1, characterized in that the main balancing structure (1) is provided on the orbiting scroll (5) of the compressor (3) and is of a unitary structure with the orbiting scroll (5).

3. The balancing assembly according to claim 1, characterized in that the adaptive balancing structure further comprises a guide slot (6), the guide slot (6) opening in the main balancing structure (1) in a direction radial to the crankshaft (4), the slider (2) being arranged within the guide slot (6), the slider (2) being configured to move in a radial direction of the crankshaft (4).

4. The balancing assembly according to claim 1, characterized in that the material density of the slider (2) is greater than the material density of the main balancing structure (1).

5. A balancing assembly according to claim 3, characterized in that the guide slot (6) has a sector-shaped projection in the axial direction of the crankshaft (4) and the slider (2) has a sector-shaped projection in the axial direction of the crankshaft (4).

6. A balance assembly according to any of claims 1 to 5 wherein the heat sensing member (23) is formed from a shape memory alloy including one-way shape memory alloys, two-way shape memory alloys.

7. The counterbalance assembly of claim 6, wherein the heat sensing member (23) is supported in one-way shape memory alloy, the heat sensing member (23) being configured such that when the temperature rises above a predetermined value, the dimension of the heat sensing member (23) changes by an amount proportional to the temperature.

8. Balancing assembly according to claim 7, characterized in that an elastic member (13) is further connected to the slider (2), the elastic member (13) being configured to exert an external force to restore the thermal sensing member (23) to its original size when the temperature drops below a preset value.

9. The balancing assembly of claim 6, wherein the thermal sensing member (23) is made of one-way shape memory alloy, and wherein the thermal sensing member (23) is configured such that the dimension of the thermal sensing member (23) changes in proportion to the temperature when the temperature rises above a predetermined value, and the thermal sensing member (23) returns to the original dimension when the temperature falls below the predetermined value.

10. The counterbalance assembly of any of claims 7 to 9, wherein the preset value is in the range of 80 ℃ to 100 ℃.

11. The balance assembly of claim 6, wherein the shape memory alloy is any one of a binary memory alloy and a ternary memory alloy.

12. The balance assembly of claim 11, wherein the binary memory alloy is any of a Ni-Ti system, a Cu-based system, a Fe-based system, and/or the ternary memory alloy is any of a Ni-Ti system, a Cu-based system, a Fe-based system.

13. A balancing assembly according to claim 3 or 8, characterized in that the chute (6) opens onto the outer circumference of the main balancing structure (1), the main balancing structure (1) further comprising a cover plate (7), the cover plate (7) being mounted on the opening of the chute (6).

14. Balancing assembly according to claim 13, characterized in that the inner arc side of the slideway (6) close to the axis of the crankshaft (4) is the bottom wall (9), the inner arc side of the slider (2) close to the axis of the crankshaft (4) is the first side (10), and the heat-sensitive element (23) is connected at one end to the bottom wall (9) and at the other end to the first side (10).

15. Balancing assembly according to claim 14, characterized in that the tank bottom wall (9) is provided with a first fastening portion (11) and the first side face (10) is provided with a second fastening portion (12), the heat sensing member (23) being connected to the tank bottom wall (9) by means of the first fastening portion (11) and to the first side face (10) by means of the second fastening portion (12).

16. The balancing assembly according to claim 15, characterized in that, when the slider (2) is connected to the elastic member (13), the outer arc side of the slider (2) away from the axis of the crankshaft (4) is a second side (14), and one end of the elastic member (13) is connected to the second side (14) and the other end is connected to the inner side of the cover plate (7).

17. Balancing assembly according to claim 16, characterized in that the second side (14) is provided with a third fastening portion (15) and the inner side of the cover plate (7) is provided with a fourth fastening portion (16), the elastic element (13) being connected to the second side (14) via the third fastening portion (15) and to the inner side of the cover plate (7) via the fourth fastening portion (16).

18. Balancing assembly according to claim 17, characterized in that the number of heat sensing elements (23) is at least two, the number of first (11) and second (12) fixtures being the same as the number of heat sensing elements (23); and/or the number of the elastic pieces (13) is at least two, and the number of the third fixing parts (15) and the number of the fourth fixing parts (16) are the same as that of the elastic pieces (13).

19. Balancing assembly according to claim 17, characterized in that the number of heat sensing members (23) is larger than the number of elastic members (13) or that the number of heat sensing members (23) is smaller than the number of elastic members (13).

20. The balancing assembly according to claim 5, characterized in that the slider (2) has a thickness t in the radial direction of the crankshaft (4) and the guide groove (6) has a depth k in the radial direction of the crankshaft (4), k/5 ≦ a/(k-a ≦ 4 k/5.

21. The balancing assembly according to claim 5, characterized in that the guide slot (6) corresponds to a central angle α, the slider (2) corresponds to a central angle β, β ≦ α; and/or the fit clearance between the slide block (2) and the guide chute (6) is 0.1mm-1 mm.

22. The balancing assembly according to claim 13, characterized in that the guide chute (6) is provided with a lubricating medium configured to reduce the frictional resistance of the slider (2) with the guide chute (6); and/or, the opening part of the guide sliding groove (6) is provided with a sealing groove, a sealing ring is arranged in the sealing groove, and the cover plate (7) can seal the guide sliding groove (6) when being installed on the opening of the guide sliding groove (6).

23. The balancing assembly according to claim 13, characterized in that the side wall of the guide chute (6) is provided with an oil through hole (17) communicating into the guide chute (6), the oil through hole (17) being configured to fill the guide chute (6) with a lubricating medium.

24. An orbiting scroll assembly characterised by the use of a balance assembly as claimed in any one of claims 1 to 23.

25. A shafting assembly, wherein the balance assembly of any one of claims 1 to 23 is used.

26. Shafting assembly according to claim 25, characterized in that it further comprises a crankshaft (4), at least one secondary balancing structure (18), said secondary balancing structure (18) being provided on the crankshaft (4) at an axial end of the motor section (24).

27. Shafting assembly according to claim 26, wherein said secondary balancing structure (18) comprises a counterweight (19), a shroud (20), said shroud (20) comprising an end plate (21), a shroud (22), said shroud (20) being configured to form said secondary balancing structure (18) into a fully wrapped shape, enabling to avoid windage of said secondary balancing structure (18) to the gas flow inside the compressor (3).

28. A compressor, characterised by employing a balance assembly as claimed in any one of claims 1 to 23, or employing an orbiting scroll (5) as claimed in claim 24, or employing a shafting assembly as claimed in any one of claims 25 to 27.