CN113904478B

CN113904478B - Motor element, compressor and air conditioner

Info

Publication number: CN113904478B
Application number: CN202111145402.7A
Authority: CN
Inventors: 孙文娇; 周瑜; 陈华杰; 阙沛祯; 梁社兵; 张辉
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-10-25
Anticipated expiration: 2041-09-28
Also published as: CN113904478A

Abstract

The utility model provides a motor element, compressor and air conditioner, motor element includes: rotor subassembly and fender oil device, the rotor subassembly includes: a rotor core and a flow-through member; a first circulation through hole is axially formed in the rotor core; the circulating component is arranged at one axial end of the rotor core, a second circulating through hole is formed in the circulating component along the axial direction, and the second circulating through hole is communicated with the first circulating through hole; the oil blocking device is arranged on one side, far away from the rotor core, of the circulating component, and the second circulating through hole is opposite to the oil blocking device. This disclosed second circulation through-hole prolongs rotor core's first circulation through-hole, has raised the height of blocking oily device simultaneously, and oil gets back to the oil bath more easily crossing blocking of winding solenoid under the effect of the centrifugal force of blocking oily device, realizes separating lubricating oil and the gas-liquid mixture of refrigerant gas, reduces the oil circulation rate, avoids the power consumption that the compressor pump body lacks oil and leads to rise, wearing and tearing, spare part problem of stinging to die even.

Description

Motor element, compressor and air conditioner

Technical Field

The disclosure belongs to the technical field of air conditioners, and particularly relates to a motor assembly, a compressor and an air conditioner.

Background

In a refrigeration cycle, lubricating oil inside the compressor has functions of lubrication, cooling, flushing, sealing and the like, and is an indispensable part for normal operation of the compressor. However, in the operation process of the compressor, a part of lubricating oil and a refrigerant enter the system through the upper cover exhaust pipe, so that the inside of the compressor is lack of oil, poor lubrication is caused, the refrigeration efficiency is reduced, and the reliability of the compressor is affected, so that the oil circulation rate needs to be reduced in the design of the compressor.

The rotor of the existing compressor is usually provided with an oil baffle structure on a rotor core, and the flow direction of a refrigerant flowing through the rotor is changed through the oil baffle, so that the refrigerating machine oil is separated out through density abnormity. However, for a large-refrigerating-capacity rotary compressor, the displacement is large, the rotating speed is high, a large amount of oil liquid can be carried by air flow in a cavity at the lower part of a motor and enters an upper cavity of the motor, a large amount of gas-liquid mixture of lubricating oil and the refrigerant cannot be completely separated by a conventional compressor motor assembly structure, so that the oil circulation rate is high, and a pump body part is abraded due to oil shortage and even blocked.

Disclosure of Invention

The technical problem to be solved by the present disclosure is to improve the refrigerant flow path of a large-displacement rotary compressor, reduce the oil discharge rate of the compressor, increase the oil level height and improve the abrasion problem of the compressor. Thereby provide a motor element, compressor and air conditioner.

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

rotor subassembly and keep off oily device, the rotor subassembly includes: a rotor core and a flow-through member;

a first circulation through hole is formed in the rotor core along the axial direction;

the circulating component is arranged at one axial end of the rotor core, a second circulating through hole is formed in the circulating component along the axial direction, and the second circulating through hole is communicated with the first circulating through hole;

the oil blocking device is arranged on one side, far away from the rotor core, of the circulating component, and the second circulating through hole is opposite to the oil blocking device.

In some embodiments, the flow-through member is a tubular structure, and the flow-through member is disposed at a top end of the rotor core.

In some embodiments, the rotor assembly has an axial length of L1, the rotor core has an axial length of L2, and L1-L2>5mm.

In some embodiments, the axial distance D1 between the flow-through member and the oil retainer is not less than 3mm.

In some embodiments, the flow-through member is entirely blocked by the oil retainer.

In some embodiments, the motor assembly further comprises a stator core on which the winding packages 1 are wound, the rotor assembly being disposed inside the stator core.

In some embodiments, the axial distance D2 of the rotor assembly top end from the winding package top end is no greater than 30mm.

In some embodiments, the oil blocking device comprises a bottom plate and a flange, the flange and the bottom plate form a barrel-shaped oil blocking device after extending from the periphery of the bottom plate to the direction far away from the circulating component, and the top end of the flange is higher than the top end of the winding coil after assembly.

In some embodiments, a magnetic steel groove is formed in the rotor core, magnetic steel is arranged in the magnetic steel groove, a magnetic steel baffle is arranged at the top end of the rotor core, and the circulation component penetrates through the magnetic steel baffle to enable the second circulation through hole to be communicated with the first circulation through hole.

In some embodiments, the number of the first circulation holes 1 is plural, the plural first circulation holes are arranged at intervals along the circumferential direction of the circulation member, and each first circulation hole is provided with one circulation member correspondingly.

In some embodiments, a plurality of through holes are provided on the magnetic steel baffle plate corresponding to the plurality of first flow through holes, each through hole is provided with one flow component, and the axial heights of the plurality of flow components are not consistent.

In some embodiments, the plurality of flow components and the magnetic steel baffle are a disk-shaped integral structure, and a platform recessed toward the rotor core is arranged at the top of the disk-shaped integral structure.

In some embodiments, the rotor core and the circulation component are both sleeved on the outer circumference of the crankshaft, the rotor core and the magnetic steel baffle plate are fixed through a fastening device, and the oil blocking device is sleeved on the upper end portion of the crankshaft.

In some embodiments, the rotor assembly is provided with a balancing device at the lower end and/or the upper end, the stator core is provided with a channel for conducting two ends of the stator core, and the winding wire package is in a distributed winding structure.

The present disclosure provides a compressor including the above-mentioned motor assembly.

In some embodiments, the lubricating oil pump further comprises a housing, wherein the housing is provided with an air suction port, the air suction port is provided with a connecting liquid distributor, the housing is internally provided with a motor assembly and a pump body component, and lubricating oil stored in the housing.

The present disclosure provides still another air conditioner including the above-mentioned compressor.

The present disclosure provides a motor assembly having at least the following beneficial effects:

this disclosure is through being provided with the circulation part in rotor core one side, the corresponding position axial with the first circulation through-hole of rotor subassembly is provided with the second circulation through-hole on the circulation part, consequently, the second circulation through-hole of circulation part has the extension to the first circulation through-hole of rotor core, because the second circulation through-hole of circulation part is closer with the axial distance of winding solenoid, the height of keeping off the oil device has been raised simultaneously, oil more easily crosses the stopping of winding solenoid under the effect of the centrifugal force of keeping off the oil device, the drippage is on the motor inner wall, get back to motor lower part space, make the lubricating oil that mixes with the refrigerant more easily get back to the oil bath, the realization is separated the gas-liquid mixture of lubricating oil and refrigerant gas, thereby reduce the oil circulation rate, avoid the inside power consumption that lacks oil and leads to of the compressor pump body to rise, wearing and even the spare part problem of seizing.

On the other hand, the compressor and the air conditioner provided by the present disclosure are designed based on the above motor assembly, and the beneficial effects thereof are found in the beneficial effects of the above motor assembly, which are not repeated herein.

Drawings

Fig. 1 is a schematic structural diagram of a conventional motor assembly and a schematic diagram of a gas-liquid mixture flow path of lubricating oil and refrigerant gas;

fig. 2 is a schematic structural diagram of a motor assembly and a schematic gas-liquid mixture flow path of lubricating oil and refrigerant gas according to an embodiment of the disclosure;

FIG. 3 is a schematic structural diagram of a compressor according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural view of a rotor assembly according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural view of a flow-through component of an embodiment of the disclosure;

fig. 6 is another schematic structural view of a flow-through component according to an embodiment of the disclosure.

The reference numerals are represented as:

10. a stator core; 101. winding wire packages; 20. a rotor assembly; 21. a rotor core; 211. a first flow-through hole; 212. magnetic steel; 22. a flow-through member; 221. a second flow-through hole; 23. an oil retaining device; 24. a magnetic steel baffle; 25. a fastening device; 26. a balancing device; 30. a crankshaft.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, the technical solutions of the present disclosure will be clearly and completely described below with reference to specific embodiments of the present disclosure and 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.

Referring to fig. 1, in the conventional art, a gas-liquid mixture of refrigerant gas mixed with lubricating oil is discharged from an outlet of a circulation hole of a rotor core through the circulation hole of the rotor, and due to high-speed rotation of the rotor, the gas-liquid mixture is thrown to the outer side of the rotor by centrifugal force, and due to blocking of a winding coil, a part of the gas-liquid mixture reversely flows to the center side of the rotor and is discharged from an exhaust port, so that the oil circulation rate is high.

As shown in connection with fig. 2-4, the present disclosure provides a motor assembly comprising:

a rotor assembly 20 and an oil baffle 23, the rotor assembly 20 comprising: a rotor core 21 and a flow member 22; a first through hole 211 is axially formed in the rotor core 21; the flow member 22 is disposed at one axial end of the rotor core 21, a second flow through hole 221 is disposed in the flow member 22 in the axial direction, and the second flow through hole 221 communicates with the first flow through hole 211; the oil blocking device 23 is disposed on a side of the circulation member 22 away from the rotor core 21, and the second circulation through hole 221 is opposite to the oil blocking device 23.

It should be noted that the motor assembly further includes a stator core 10, a winding coil 101 is wound on the stator core 10, and the rotor assembly 20 is disposed inside the stator core 10.

The flow member 22 has a tubular structure, and the flow member 22 is provided at the top end of the rotor core 21.

This embodiment is through being provided with the circulation part in rotor core one side, the corresponding position axial with the first circulation through-hole of rotor subassembly is provided with second circulation through-hole on the circulation part, consequently, the second circulation through-hole of circulation part has the extension to rotor core's first circulation through-hole, because the second circulation through-hole of circulation part is closer with the axial distance of winding solenoid, the height of keeping off the oil device has been raised simultaneously, fluid crosses the stopping of winding solenoid more easily under the effect of the centrifugal force of keeping off the oil device, the drip is on the motor inner wall, get back to motor lower part space, make the lubricating oil with the refrigerant mixture get back to the oil bath more easily, the realization is separated the gas-liquid mixture of lubricating oil and refrigerant gas, thereby reduce the oil circulation rate, avoid the inside power consumption that the lack of oil leads to of the compressor pump body to rise, wearing and tearing, the problem is even spare part seizes.

In some embodiments, as shown in connection with FIG. 3, the rotor assembly 20 has an axial length L1, the rotor core 21 has an axial length L2, and L1-L2>5mm. L1-L2 are axial lengths of the circulating parts, and when the axial lengths of the circulating parts are larger than 5mm, the circulating parts have better guiding effect on a gas-liquid mixture flow path of lubricating oil and refrigerant gas.

In some embodiments, as shown in fig. 3, the axial distance D1 between the top end of the flow-through member 22 and the oil baffle 23 is not less than 3mm. The flow guide member has a better effect of guiding the flow path of the gas-liquid mixture of the lubricating oil and the refrigerant gas.

In some embodiments, as shown in fig. 2 to 4, the flow-through member 22 is completely blocked by the oil blocking device 23.

The oil blocking device can block all circulating parts, so that oil can cross the blocking of a winding coil easily under the action of centrifugal force and is dripped on the inner wall to return to the space below the motor, and the separation of a gas-liquid mixture of lubricating oil and refrigerant gas is realized.

In some embodiments, as shown in connection with fig. 1, the axial distance D2 of the top end of the rotor assembly 20 from the top end of the winding package 101 is no greater than 30mm.

When the axial distance D2 between the top end of the rotor assembly 20 and the top end of the winding package 101 is not greater than 30mm, the guiding effect of the circulating member on the gas-liquid mixture flow path of the lubricating oil and the refrigerant gas is better.

In some embodiments, as shown in fig. 2 to 3, the oil baffle 23 includes a bottom plate and a flange, the flange extends from the periphery of the bottom plate to a direction away from the flow component 22, the flange and the bottom plate form the oil baffle 23 in a barrel-shaped structure, and the top end of the flange is higher than the top end of the winding coil 101 after assembly.

It should be noted that the top of the winding package is lower than the top of the oil retainer and can function as the embodiment even without the flange.

The turn-ups's of the fender oil device of this embodiment top is higher than the top of winding solenoid, prevents the reverse flow direction rotor center side of fluid, makes fluid to making more easily that fluid crosses stopping of winding solenoid under the effect of centrifugal force, drips and attaches at the inner wall, returns motor lower part space, realizes separating the gas-liquid mixture of lubricating oil and refrigerant gas. Thereby reduce the oil circulation rate, avoid the power consumption that the lack of oil in the compressor pump body leads to rise, wearing and tearing, even spare part seizes the problem.

In some embodiments, as shown in fig. 4, a magnetic steel slot is formed in the rotor core 21, a magnetic steel 212 is disposed in the magnetic steel slot, a magnetic steel baffle 24 is disposed at the top end of the rotor core 21, and the circulation component 22 penetrates the magnetic steel baffle 24 to enable the second circulation through hole 221 to communicate with the first circulation through hole 211.

It should be noted that, if the magnetic steel sets up when the magnetic steel inslot in clearance fit, rotor core both ends all need set up the magnet steel baffle at rotor core both ends, and two magnet steel baffles play and carry out spacing fixed action to the magnet steel.

In some embodiments, as shown in fig. 4, the number of the first circulation holes 211 is plural, the plural first circulation holes 211 are arranged at intervals in the circumferential direction of the circulation member 22, and each first circulation hole 211 is provided with one circulation member 22 correspondingly. The number of the first circulation holes 211 is plural to increase the circulation rate of the refrigerant.

In some embodiments, as shown in fig. 5, a plurality of through holes are provided on the magnetic steel baffle 24 corresponding to the plurality of first circulation through holes 211, each through hole is provided with one circulation member 22, and the axial heights of the plurality of circulation members 22 are not uniform.

In the present embodiment, the height of the circulation member 22 is adjusted to perform a counterweight function, and the arrangement of the counterweight may be eliminated.

In some embodiments, as shown in fig. 6, the plurality of flow components 22 and the magnetic steel baffle 24 are a disk-shaped integral structure, and a platform recessed toward the rotor core 21 is disposed on the top of the disk-shaped integral structure.

In this embodiment, the circular disk-shaped integrated structure formed by combining the circulation component 22 and the magnetic steel baffle 24 is provided with the concave platform facing the rotor core 21 at the top of the circular disk-shaped integrated structure, so that the circular disk-shaped integrated structure formed by combining the circulation component 22 and the magnetic steel baffle 24 has a counterweight function, and the arrangement of the counterweight can be cancelled.

In some embodiments, as shown in fig. 2 to 3, the rotor core 21 and the circulating part 22 are both sleeved on the outer circumference of the crankshaft 30, the rotor core 21 and the magnetic steel baffle plate 24 are fixed by the fastening device 25, and the oil blocking device 23 is sleeved on the upper end of the crankshaft 30.

This embodiment is through keeping off the direct and closely cooperating with the bent axle of oily device to it comes to keep apart with rotor core subassembly interval, guarantees the refrigerant and discharges. Compared with the mode that the traditional oil blocking device is fixed with the rotor core through the fastening piece, the problem of reliability reduction caused by overlong fastening piece can be avoided.

In some embodiments, as shown in fig. 2 to 4, the rotor assembly 20 is provided with a balancing device 26 at the lower end and/or the upper end thereof, the stator core 10 has a channel for conducting both ends thereof, and the winding wire is in a distributed winding structure. The balancing device has a counterweight function, so that the motor can run more stably. The stator core 10 is provided with a channel which is communicated with two ends, so that lubricating oil can return to an oil pool through a stator circulation channel more easily, the oil circulation rate is reduced, and the problems of power consumption rise, abrasion and even component seizure caused by oil shortage in the compressor pump body are avoided.

Those skilled in the art will readily appreciate that the features of the above described modes 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. An electric machine assembly, comprising:

a rotor assembly (20) and an oil baffle (23), the rotor assembly (20) comprising: a rotor core (21) and a flow member (22);

a first through hole (211) is formed in the rotor core (21) along the axial direction;

the circulating component (22) is arranged at one axial end of the rotor core (21), a second circulating through hole (221) is formed in the circulating component (22) along the axial direction, and the second circulating through hole (221) is communicated with the first circulating through hole (211);

the oil blocking device (23) is arranged on one side, away from the rotor core (21), of the circulating component (22), and the second circulating through hole (221) is opposite to the oil blocking device (23); the circulating component (22) is of a tubular structure, and the circulating component (22) is arranged at the top end of the rotor iron core (21).

2. The motor assembly according to claim 1, wherein the axial length of the rotor assembly (20) is L1, the axial length of the rotor core (21) is L2, and L1-L2>5mm.

3. An electric machine assembly according to claim 1, characterized in that the axial distance D1 between the flow-through member (22) and the oil retainer (23) is not less than 3mm.

4. An electric machine assembly according to claim 1, characterized in that the flow-through member (22) is completely shielded by the oil baffle means (23).

5. The motor assembly according to claim 1, further comprising a stator core (10), wherein a winding package (101) is wound on the stator core (10), and wherein the rotor assembly (20) is disposed inside the stator core (10).

6. The motor assembly according to claim 5, characterized in that the axial distance D2 of the top end of the rotor assembly (20) from the top end of the winding package (101) is not more than 30mm.

7. An electric machine assembly according to claim 5, characterised in that the oil deflector (23) comprises a bottom plate and a flange extending from the periphery of the bottom plate in a direction away from the flow element (22), the flange and the bottom plate enclosing the oil deflector (23) in a barrel-like configuration, the top end of the flange being higher than the top end of the winding package (101) after assembly.

8. The motor assembly according to claim 1, wherein a magnetic steel groove is formed in the rotor core (21), a magnetic steel (212) is arranged in the magnetic steel groove, a magnetic steel baffle plate (24) is arranged at the top end of the rotor core (21), and the circulation component (22) penetrates through the magnetic steel baffle plate (24) to enable the second circulation through hole (221) to be communicated with the first circulation through hole (211).

9. The motor assembly according to claim 8, wherein the number of the first circulation holes (211) is plural, the plural first circulation holes (211) are arranged at intervals in a circumferential direction of the circulation member (22), and each of the first circulation holes (211) is provided with one of the circulation members (22) correspondingly.

10. The motor assembly according to claim 9, wherein a plurality of through holes are formed in the magnetic steel baffle plate (24) corresponding to the plurality of first through holes (211), one through member (22) is arranged in each through hole, and the axial heights of the plurality of through members (22) are not uniform.

11. The motor assembly of claim 9, wherein a plurality of said flow-through members (22) and said alnico baffle (24) are a disc-shaped unitary structure, and a top portion of said disc-shaped unitary structure is provided with a platform recessed toward said rotor core (21).

12. The motor assembly according to any one of claims 8 to 11, wherein the rotor core (21) and the circulation component (22) are both sleeved on an outer circumference of the crankshaft (30), the rotor core (21) and the magnetic steel baffle plate (24) are fixed by a fastening device (25), and the oil blocking device (23) is sleeved on an upper end portion of the crankshaft (30).

13. The motor assembly according to claim 5, characterized in that the rotor assembly (20) is provided with a balancing device (26) at the lower end and/or the upper end, the stator core (10) is provided with a channel for conducting the two ends thereof, and the winding package (101) is of a distributed winding structure.

14. A compressor comprising a motor assembly according to any one of claims 1 to 13.

15. The compressor of claim 14, further comprising a housing having a suction port with a connection dispenser, the housing having the motor assembly and pump block components disposed therein, and lubricant stored in the housing.

16. An air conditioner characterized by comprising the compressor of claim 14 or 15.