CN220358893U - Rotor assembly, compressor and refrigeration equipment - Google Patents

Abstract

The utility model discloses a rotor assembly, a compressor and refrigeration equipment, wherein the rotor assembly comprises a rotor iron core, a rotating shaft, a balance block and a baffle plate, the rotating shaft is provided with a first end part penetrating through a shaft hole, the rotating shaft is provided with an oil passage penetrating along the axial direction of the rotating shaft, and the first end part is provided with an oil outlet communicated with the oil passage; the balance weight is fixedly arranged at one end of the rotor core, which is close to the oil outlet; the baffle is connected to one side of the balance block, which is far away from the rotor core, and is provided with a through hole, and the aperture of the through hole is larger than or equal to that of the oil outlet, so that the baffle does not block the oil outlet quantity of the oil outlet; through baffle and rotation axis, rotor core cooperation, under the perisporium and rotation axis butt of through-hole, or under the perisporium and rotor core butt's of through-hole circumstances, can separate the oil outlet of rotation axis and the negative pressure region that the balancing piece produced, effectively reduce the pressure differential between oil absorption hole and the oil outlet of rotation axis, restrain the oil yield to reach the stable purpose of oil pool.

Description

Rotor assembly, compressor and refrigeration equipment

Technical Field

The utility model relates to the technical field of compressors, in particular to a rotor assembly, a compressor and refrigeration equipment.

Background

The operational reliability of the pump body assembly of the refrigeration compressor mainly depends on the action of lubricating oil, and along with the development of miniaturization and high speed of the compressor and the use of some novel environment-friendly refrigerants, the design of the compressor capable of ensuring the stability of an internal oil pool so as to perform full lubrication becomes an important subject.

In the related art, the compressor corrects unbalance of the rotor assembly caused by the eccentricity of the rotating shaft through the balance block, so that the rotor assembly is ensured to rotate stably, however, the balance block can generate high-speed rotating air flow to form negative pressure when rotating, so that pressure difference is formed between the oil suction hole and the oil outlet hole of the rotating shaft, uneven oil outlet amount is caused, and the stability of the oil pool is influenced.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the rotor assembly which can effectively reduce the pressure difference between the oil suction hole and the oil outlet hole of the rotating shaft, inhibit the oil outlet amount and achieve the purpose of stabilizing the liquid level of the oil pool.

The utility model also provides a compressor comprising the rotor assembly and refrigeration equipment.

A rotor assembly according to an embodiment of the first aspect of the present utility model includes a rotor core having a shaft hole, a rotation shaft, a weight, and a baffle plate; the rotary shaft is provided with a first end part penetrating through the shaft hole, the rotary shaft is provided with an oil passage penetrating through the rotary shaft along the axial direction of the rotary shaft, and the first end part is provided with an oil outlet communicated with the oil passage; the balance weight is fixedly arranged at one end of the rotor iron core, which is close to the oil outlet; the baffle is connected to one side of the balance block, which is far away from the rotor core, the baffle is provided with a through hole, the aperture of the through hole is larger than or equal to the aperture of the oil outlet, and the peripheral wall of the through hole is abutted against the rotating shaft or the rotor core.

The rotor assembly provided by the embodiment of the utility model has at least the following beneficial effects:

the first end part of the rotating shaft penetrates through the shaft hole, the rotating shaft is provided with an oil passage penetrating along the axial direction of the rotating shaft, an oil outlet of the oil passage is arranged at the first end part, the balance block is fixedly arranged at one end of the rotor core, which is close to the oil outlet, and the baffle is connected to one side of the balance block, which is far away from the rotor core, and is provided with a through hole corresponding to the oil outlet; through baffle and rotation axis, rotor core cooperation, under the perisporium and rotation axis butt of through-hole, or under the perisporium and rotor core butt's of through-hole circumstances, can separate the oil outlet of rotation axis and the negative pressure region that the balancing piece produced, effectively reduce the oil absorption hole of rotation axis and the pressure difference between the oil outlet, restrain the oil yield to reach the purpose that the oil pool liquid level is stable, be applied to the compressor.

According to some embodiments of the utility model, the first end portion protrudes from an end face of the rotor core, the end face of the first end portion abuts against an end face of the baffle plate facing the rotor core, and an aperture of the through hole is smaller than or equal to an aperture of the shaft hole.

According to some embodiments of the utility model, a flange is formed on one side of the baffle, and the flange is disposed along the axial direction of the rotating shaft and surrounds the through hole.

According to some embodiments of the utility model, the first end portion protrudes from an end surface of the rotor core, and an inner wall surface of the through hole abuts against an outer wall surface of the first end portion.

According to some embodiments of the utility model, the end face of the first end portion is flush with the end face of the rotor core facing the baffle plate, the flange is provided facing the rotor core, and the end far from the baffle plate abuts against the end face of the first end portion or the end face of the rotor core.

According to some embodiments of the utility model, the end face of the first end is concavely arranged relative to the end face of the rotor core, the flange is arranged towards the rotor core, one end away from the baffle is abutted against the end face of the rotor core, the peripheral wall of the flange is annular, and the outer diameter of the flange is larger than or equal to the aperture of the shaft hole.

According to some embodiments of the utility model, the end face of the first end is concavely arranged relative to the end face of the rotor core, the flange is arranged towards the rotor core, one end away from the baffle is abutted against the end face of the first end, the peripheral wall of the flange is annular, and the outer diameter of the flange is smaller than or equal to the aperture of the shaft hole.

According to some embodiments of the utility model, the baffle and the flanging are integrally formed as a sheet metal stamping or plastic part.

According to some embodiments of the utility model, the baffle is integrally formed with the counterweight as a cast piece.

According to some embodiments of the utility model, the baffle plate and the balance weight are riveted or bolted to the rotor core.

According to a second aspect of the present utility model, a compressor includes a pump body assembly and a driving mechanism, the driving mechanism includes a stator assembly and the rotor assembly according to the first aspect of the present utility model, the rotor core is rotatably disposed in the stator assembly, and an end of the rotating shaft, which is far away from the rotor core, is connected to the pump body assembly.

The compressor provided by the embodiment of the utility model has at least the following beneficial effects:

the compressor adopts the rotor assembly of the embodiment, the balance block is fixedly arranged at one end of the rotor iron core, which is close to the oil outlet, and the baffle plate is connected to one side of the balance block, which is far away from the rotor iron core, and the aperture of the through hole is larger than or equal to that of the oil outlet, so that the baffle plate does not block the oil outlet amount of the oil outlet; and cooperate with rotary shaft, rotor core through the baffle, under the circumstances that the perisporium and rotary shaft butt of through-hole, or the perisporium and rotor core butt of through-hole, can separate the oil outlet area of rotary shaft and the negative pressure area that the balancing piece produced, effectively reduce the pressure differential between oil suction hole and the oil outlet of rotary shaft, restrain the oil yield to reach the purpose that the oil pool liquid level is stable, be favorable to improving compressor operational reliability, be applicable to refrigeration plant such as air conditioner.

A refrigeration appliance according to an embodiment of a third aspect of the present utility model includes a compressor according to an embodiment of the second aspect described above.

The refrigeration equipment provided by the embodiment of the utility model has at least the following beneficial effects:

the compressor of the embodiment is adopted by the refrigeration equipment, and the aperture of the through hole is larger than or equal to that of the oil outlet, so that the baffle plate does not block the oil outlet quantity of the oil outlet; and cooperate with rotary shaft, rotor core through the baffle, under the perisporium and rotary shaft butt of through-hole, or under the perisporium and rotor core butt's of through-hole circumstances, can separate the oil outlet of rotary shaft and the negative pressure region that the balancing piece produced, effectively reduce the oil absorption hole of rotary shaft and the pressure difference between the oil outlet, restrain the oil yield to reach the purpose that the oil pool liquid level is stable, improve refrigeration plant operational reliability.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is a schematic cross-sectional view of a compressor according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram illustrating an assembly of a baffle, a first weight, a second weight and a rotor core according to an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of a rotor assembly according to a first embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view of a rotor assembly according to a second embodiment of the present utility model;

FIG. 5 is a schematic cross-sectional view of a rotor assembly according to a third embodiment of the present utility model;

FIG. 6 is a schematic cross-sectional view of a rotor assembly according to a fourth embodiment of the present utility model;

FIG. 7 is a schematic cross-sectional view of a rotor assembly according to a fifth embodiment of the present utility model;

FIG. 8 is a schematic cross-sectional view of a rotor assembly according to a sixth embodiment of the present utility model;

fig. 9 is a schematic sectional structure of a compressor according to another embodiment of the present utility model.

Reference numerals:

a compressor 1000;

a housing 2000;

a drive mechanism 3000;

pump body assembly 4000;

a reservoir 5000;

a stator assembly 100;

a rotor assembly 200; a rotor core 210; a shaft hole 211; a rotation shaft 220; an oil passage 221; an oil outlet hole 222; a first end 223; a first weight 230; a baffle 240; a through hole 241; a peripheral wall 242; a flange 243; a second weight 250; a localized negative pressure region 260; rivet 270.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms upper, lower, axial, circumferential, radial, etc. indicate an azimuth or a positional relationship based on that shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, plural means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and the above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, it should be noted that terms such as arrangement, installation, connection, etc. should be construed broadly, and those skilled in the art may reasonably determine the specific meaning of the foregoing terms in the present utility model in combination with the specific content of the technical solution.

The following description of the embodiments of the present utility model will be made with reference to the accompanying drawings, in which it is apparent that the embodiments described below are some, but not all embodiments of the utility model.

In rotary compressors, pump body subassembly can compress refrigerant under actuating mechanism's drive, and compressor operational reliability relies on the lubrication action of lubricating oil, and the oil sump of compressor is located the bottom of casing, and lubricating oil can flow to the oil outlet along the hollow structure in the rotation axis, can flow back to the oil sump after lubricated.

In the related art, at least one end of a rotor core in a compressor is provided with a balance block, the balance block generally has an irregular shape, and the balance block can correct the unbalance amount of a rotor assembly caused by the eccentricity of a rotating shaft, so that the rotor assembly is ensured to rotate stably.

The rotor subassembly is in high-speed rotation state during compressor work, and the balancing piece can lead to the fact stirring to the air current, produces high-speed rotatory air current in rotor core's tip position, can form the low pressure zone at the rotatory region of balancing piece to produce local negative pressure region, can form pressure differential between the oil suction hole and the oil outlet of rotation axis like this, cause lubricating oil to spit out in a large number, the oil yield is inhomogeneous, influences the stability of oil pool liquid level, is difficult to guarantee the operational reliability of compressor.

A compressor 1000 according to an embodiment of the present utility model, the compressor 1000 being embodied as a rotary compressor, is described below with reference to fig. 1, and is applicable to a refrigerating apparatus such as an air conditioner.

Referring to fig. 1, the compressor 1000 includes a housing 2000, a driving mechanism 3000 and a pump body assembly 4000, a closed cavity is formed in the housing 2000, the driving mechanism 3000 and the pump body assembly 4000 are disposed in the cavity, a liquid reservoir 5000 is connected to an outside of the housing 2000, the liquid reservoir 5000 is connected to an air inlet side of the pump body assembly 4000, wherein the driving mechanism 3000 is located above the pump body assembly 4000, the driving mechanism 3000 includes a stator assembly 100 and a rotor assembly 200, the rotor assembly 200 includes a rotor core 210 and a rotation shaft 220, the rotor core 210 is rotatably disposed in the stator assembly 100, an upper end of the rotation shaft 220 is connected to the rotor core 210, a lower end of the rotation shaft 220 is connected to the pump body assembly 4000, and the rotation shaft 220 is also referred to as a crankshaft. In operation, drive mechanism 3000 drives pump body assembly 4000 through rotation shaft 220 to compress the refrigerant.

It can be understood that the center of the rotor core 210 is provided with a shaft hole 211, the shaft hole 211 penetrates through the rotor core 210 along the axial direction of the rotor core 210, the upper end of the rotating shaft 220 penetrates through the shaft hole 211, the rotating shaft 220 is provided with an oil duct 221 penetrating through the rotating shaft 220 along the axial direction, and the axial direction of the oil duct 221 is the same as the axial direction of the shaft hole 211; in an embodiment, the upper end of the rotating shaft 220 is a first end 223, the lower end is a second end, the end face of the first end 223 is provided with an oil outlet 222, the end face of the second end is provided with an oil inlet, the oil inlet and the oil outlet 222 are respectively communicated with the oil duct 221, and lubricating oil in the oil pool can enter the oil duct 221 from the oil inlet and be discharged from the oil outlet 222 along the oil duct 221.

Referring to fig. 1 and 2, the rotor assembly 200 further includes a balancing block and a baffle 240, the balancing block is a first balancing block 230, the first balancing block 230 is fixedly disposed at one end of the rotor core 210 far away from the pump body assembly 4000, that is, the first balancing block 230 is located at the upper end of the rotor core 210, and the first balancing block 230 is disposed at an interval with the shaft hole 211, so that the first balancing block 230 does not affect the assembly of the rotating shaft 220. Baffle 240 connects in the one side that rotor core 210 was kept away from to first balancing piece 230, specifically, the central point that baffle 240 is located the upper end baffle 240 of first balancing piece 230 is provided with through-hole 241, and through-hole 241 sets up with oil outlet 222 relatively, makes oil outlet 222 communicate to the cavity of one side that baffle 240 kept away from first balancing piece 230 through-hole 241, and this cavity is the upper chamber of compressor 1000, and the lubricating oil of following oil outlet 222 to spit like this can be discharged to the upper chamber of compressor 1000 through-hole 241, makes baffle 240 can not block the play oil of oil outlet 222.

Referring to fig. 2, it should be noted that, the baffle 240 is a circular plate structure, the outer diameter of the baffle 240 is approximately the same as the outer diameter of the rotor core 210, the baffle 240 can cover the first balance block 230, and since the first balance block 230 is in an irregular shape, in a specific embodiment, the first balance block 230 is in an arc shape or a semi-ring shape, a gap is formed between the baffle 240 and the rotor core 210, and the distance between the baffle 240 and the rotor core 210 is equal to the thickness of the first balance block 230. The specific size of the first balance weight 230 is set according to practical application requirements, and is not particularly limited.

It will be appreciated that when the first balance weight 230 rotates at a high speed, the air flow will be pushed to the outside, so that a local negative pressure is formed in the rotation area, and the area of the local negative pressure can be also understood as the area where the rotation path of the first balance weight 230 is located, and because the local negative pressure area 260 is close to the oil outlet 222, the air pressure in the area where the oil outlet 222 is located is lower than the air pressure in the area where the oil inlet is located, a pressure difference is formed between the oil outlet 222 and the oil inlet, so that the flow of lubricating oil from the oil inlet to the oil outlet 222 is accelerated, and the larger the pressure difference, the larger the oil outlet amount.

Referring to fig. 1 and 2, in the embodiment of the present utility model, the aperture of the through hole 241 is optimally designed, so that the aperture of the through hole 241 is greater than or equal to the aperture of the oil outlet 222, and the baffle 240 does not affect the oil output of the oil outlet 222; the baffle 240 is matched with the rotating shaft 220, so that the peripheral wall 242 of the through hole 241 is abutted against the rotating shaft 220, or the baffle 240 is matched with the rotor core 210, so that the peripheral wall 242 of the through hole 241 is abutted against the rotor core 210, that is, when the baffle 240 is contacted with the rotating shaft 220 or the rotor core 210, the oil outlet 222 of the rotating shaft 220 can be separated from the local negative pressure region 260 generated by the first balance block 230, the oil outlet 222 is not influenced by the local negative pressure region 260, the pressure difference between the oil suction hole and the oil outlet 222 of the rotating shaft 220 is effectively reduced, the pressure difference between the oil suction hole and the oil outlet 222 can be kept in a stable state, excessive lubricating oil is prevented from being sucked into the upper cavity of the compressor 1000, the oil outlet quantity of the oil outlet 222 is restrained, a stable oil surface is formed, the aim of stabilizing an oil pool is achieved, and the lubrication and the operation reliability of the compressor 1000 is ensured.

The peripheral wall 242 of the through hole 241 is understood to be a side wall formed around the through hole 241 on the baffle 240, and the side wall is not limited to the inner wall of the through hole 241, and may be a portion adjacent to the inner wall of the through hole 241, that is, the side wall of the through hole 241 may have an inner wall surface and an end portion, and when the side wall of the through hole 241 is extended toward the rotor core 210, the end portion of the side wall of the through hole 241 may be abutted against the end surface of the rotor core 210 or the end surface of the rotary shaft 220.

It can be understood that the local negative pressure region 260 generated by the first balance weight 230 is located between the baffle 240 and the rotor core 210, and when the inner wall of the through hole 241 contacts the rotating shaft 220, the oil outlet 222 is not communicated with the local negative pressure region 260 through the gap between the inner wall and the rotating shaft 220, so as to achieve the purpose of separating the oil outlet 222 from the local negative pressure region 260; when the peripheral wall 242 of the through hole 241 contacts the rotor core 210, the oil outlet 222 does not communicate with the partial negative pressure region 260 through the gap between the peripheral wall 242 and the rotor core 210, and the purpose of separating the oil outlet 222 from the partial negative pressure region 260 can be achieved as well.

The structure in which the oil outlet hole 222 of the rotating shaft 220 is spaced from the partial negative pressure region 260 will be described below as a specific example.

Referring to fig. 3, in some embodiments, the first end 223 of the rotation shaft 220 is connected to the shaft hole 211 of the rotor core 210, and the first end 223 protrudes from the upper end surface of the rotor core 210, the upper end surface of the rotation shaft 220 is the end surface of the first end 223, and the end surface of the first end 223 is flush with the upper end surface of the first balance weight 230, so that the end surface of the first end 223 abuts against the lower end surface of the baffle 240.

As shown in fig. 3, the diameter of the oil outlet 222 is Φ1, the diameter of the shaft hole 211 is Φ2, the diameter of the through hole 241 is Φ3, it can be understood that the first end 223 is disposed through the shaft hole 211, the outer diameter of the first end 223 and the diameter of the shaft hole 211 are both Φ2, and the following requirements are satisfied: phi 2 is more than phi 1; since the aperture of the through hole 241 needs to be greater than or equal to the aperture of the oil outlet hole 222, and at least part of the end surface of the first end portion 223 is kept in contact with the upper end surface of the rotation shaft 220, that is, the aperture of the through hole 241 is not smaller than the aperture of the oil outlet hole 222 and not exceeding the aperture of the shaft hole 211, it is satisfied that: phi 1 is less than or equal to phi 3 is less than or equal to phi 2. For example, the diameter of the oil outlet 222 may be set to 3mm, the diameter of the shaft hole 211 may be set to 8mm, the diameter of the through hole 241 may be set to 3mm, 4mm, 5mm, 8mm, etc., so that no gap may occur between the baffle 240 and the rotation shaft 220, the oil outlet 222 may be separated from the partial negative pressure region 260, the pressure difference between the oil suction hole of the rotation shaft 220 and the oil outlet 222 may be reduced, and the oil amount may be suppressed, thereby forming a stable oil surface, and satisfying the requirement of a stable oil pool.

The improvement effect is shown as follows:

it can be appreciated that the through hole 241 is formed at the center of the baffle 240, and in the case where φ 1+.o.φ 3+.φ 2 is satisfied, the peripheral wall 242 of the through hole 241 is abutted against the upper end surface of the rotating shaft 220 toward one end of the rotor core 210, at this time, the oil outlet 222 is tightly attached to the through hole 241, and the lubricating oil can be sequentially discharged to the upper cavity of the compressor 1000 through the oil outlet 222 and the through hole 241 without being affected by the local negative pressure region 260.

It should be noted that, since the baffle 240, the first balance block 230, and the rotation shaft 220 are fixedly connected to the rotor core 210, they are relatively stationary, and no friction is generated, so that the rotor assembly 200 has high structural stability.

In addition, in some embodiments, the inner diameters of the oil channels 221 are not uniformly distributed, and the diameters of the oil inlet holes and the oil outlet holes 222 may be set to be larger than the inner diameter of the middle position of the oil channels 221, that is, the oil channels 221 are of a channel structure with narrow middle and wide two ends, so that the overall structure of the rotating shaft 220 is ensured to have sufficient strength.

As can be appreciated in connection with fig. 1, fig. 1 shows a compressor 1000 to which the rotor assembly 200 of the embodiment shown in fig. 3 is applied, which can solve the problem of unbalance amount due to the eccentricity of the rotation shaft 220 and ensure lubrication and operational reliability of the compressor 1000.

Referring to fig. 4, in some embodiments, the difference from the embodiment shown in fig. 3 is that the upper end of the rotation shaft 220 protrudes from the upper end surface of the rotor core 210 by a height greater than the interval between the baffle 240 and the rotor core 210, and the aperture of the shaft hole 211 is equal to the aperture of the through hole 241, satisfying: phi 2 = phi 3, for example, the aperture of the shaft hole 211 and the aperture of the through hole 241 may be set to 5mm, 6mm, 8mm, etc., so that the inner wall surface of the through hole 241 is abutted against the outer wall surface of the first end portion 223, and no gap is formed between the baffle 240 and the rotating shaft 220, thereby separating the oil outlet 222 from the partial negative pressure region 260, reducing the pressure difference between the oil suction hole of the rotating shaft 220 and the oil outlet 222, suppressing the oil output, and meeting the requirement of a stable oil pool.

In the embodiment shown in fig. 4, the first end 223 protrudes from the upper end surface of the baffle 240, so that the oil outlet 222 is located above the baffle 240, and all the inner wall surfaces of the through holes 241 are in contact with the rotation shaft 220. Of course, this is merely an example, and in some embodiments of the rotating shaft 220, the end surface of the first end 223 may be located between the upper end surface and the lower end surface of the baffle 240, that is, a portion of the inner wall surface of the through hole 241 abuts against the rotating shaft 220, and the effect of separating the oil outlet 222 from the local negative pressure region 260 may be achieved.

Referring to fig. 5, in some embodiments, a difference from the embodiment shown in fig. 4 is that a flange 243 is provided on a side of the baffle 240 facing the rotor core 210, and the flange 243 extends along an axial direction of the rotation shaft 220 and encloses the through hole 241. It can be understood that the flange 243 is annular, the inner diameter of the flange 243 is Φ4, the inner diameter of the flange 243 is consistent with the inner diameter of the through hole 241 and is equal to the aperture of the shaft hole 211, namely, the following conditions are satisfied: Φ2=Φ3=Φ4, for example, the aperture of the shaft hole 211, the aperture of the through hole 241, and the inner diameter of the burring 243 may all be set to 5mm, 6mm, 8mm, or the like; the upper end of the rotating shaft 220 protrudes from the upper end surface of the rotor core 210 by a height greater than the distance between the baffle 240 and the rotor core 210, so that the inner wall surface of the flange 243 is abutted against the outer wall surface of the first end 223, the oil outlet 222 is separated from the local negative pressure region 260, the pressure difference between the oil suction hole of the rotating shaft 220 and the oil outlet 222 is reduced, the oil outlet amount is suppressed, and the requirement of stabilizing the oil pool is met.

In the embodiment shown in fig. 5, the first end 223 protrudes from the upper end surface of the baffle 240, so that the oil outlet 222 is located above the baffle 240, and all the inner wall surfaces of the flange 243 are in contact with the rotating shaft 220. Of course, the end surface of the first end 223 may be lower than the upper end surface of the baffle 240, and a portion of the inner wall surface of the flange 243 may be kept in contact with the rotating shaft 220, so that the oil outlet 222 and the partial negative pressure region 260 may be separated.

In addition, as some embodiments of the baffle 240, the flange 243 may be disposed on an upper end surface of the baffle 240 and extends away from the rotor core 210, so as to separate the oil outlet 222 from the partial negative pressure region 260.

Referring to fig. 6, in some embodiments, the difference from the embodiment shown in fig. 5 is that the end surface of the first end 223 is flush with the upper end surface of the rotor core 210, the flange 243 is disposed toward the rotor core 210, and the lower end surface of the flange 243 abuts against the end surface of the first end 223, which satisfies the following conditions in the embodiment: Φ2=Φ3=Φ4, for example, the aperture of the shaft hole 211, the aperture of the through hole 241, and the inner diameter of the burring 243 may be set to 5mm, 6mm, 8mm, or the like, so that no gap is formed between the burring 243 and the rotor core 210.

Since the flange 243 is abutted against the rotor core 210, no gap is formed between the flange 243 and the rotor core 210, so that the rotating shaft 220 does not need to protrude from the upper end surface of the rotor core 210, the oil outlet 222 and the local negative pressure region 260 can be ensured to be separated by matching the flange 243 with the rotor core 210, the pressure difference between the oil suction hole and the oil outlet 222 of the rotating shaft 220 is reduced, the oil outlet amount is suppressed, and the requirement of stabilizing an oil pool is met.

It should be noted that, as shown in fig. 6, the aperture of the through hole 241 is not limited to be equal to the aperture of the shaft hole 211, or the aperture of the through hole 241 may be larger than the aperture of the shaft hole 211, or the aperture of the through hole 241 may be smaller than the aperture of the shaft hole 211, and when the aperture of the through hole 241 is smaller than the aperture of the shaft hole 211, the lower end face of the flange 243 abuts against the upper end face of the rotating shaft 220, and the aperture of the through hole 241 is not smaller than the aperture of the oil outlet 222, so that the oil outlet 222 and the local negative pressure region 260 can be separated.

Referring to fig. 7, in some embodiments, the difference from the embodiment shown in fig. 6 is that the end surface of the first end portion 223 is concavely disposed with respect to the end surface of the rotor core 210, that is, the upper end surface of the rotating shaft 220 is lower than the upper end surface of the rotor core 210, and in fig. 7, the inside diameter of the flange 243 is identical to the inside diameter of the through hole 241, and is equal to the aperture of the shaft hole 211, that is, it satisfies: Φ2=Φ3=Φ4, for example, the aperture of the shaft hole 211, the aperture of the through hole 241, and the inner diameter of the burring 243 may be set to 5mm, 6mm, 8mm, or the like.

It should be noted that, considering that the flange 243 has a certain thickness along the radial direction of the rotor core 210, the inner diameter of the flange 243 may be smaller than the inner diameter of the shaft hole 211, and the outer diameter of the flange 243 needs to be equal to or larger than the aperture of the shaft hole 211, specifically, the outer diameter of the flange 243 is Φ5, which satisfies the following conditions: phi 5 is equal to or greater than phi 2, for example, the aperture of the shaft hole 211 may be set to 6mm, the outer diameter of the flange 243 may be set to 6mm, 7mm, 8mm, or the like, so that no gap is formed between the flange 243 and the rotor core 210.

Referring to fig. 8, in some embodiments, the difference from the embodiment shown in fig. 7 is that the lower end of the flange 243 extends into the shaft hole 211 and abuts against the end face of the first end 223, and the outer diameter of the flange 243 is smaller than or equal to the aperture of the shaft hole 211, that is, the following is satisfied: phi 5.ltoreq.phi 2 and phi 4.gtoreq.phi 1, for example, the diameter of the oil outlet 222 may be set to 3mm, the diameter of the through hole 241 may be set to 5mm, the diameter of the shaft hole 211 may be set to 8mm, the outer diameter of the flange 243 may be set to 7mm, 8mm, etc. It will be appreciated that when Φ5=Φ2, the outer peripheral wall of the flange 243 abuts against the inner peripheral wall of the shaft hole 211, and at this time, the flange 243 abuts against the rotor core 210 and the rotating shaft 220, so that the oil outlet 222 is ensured to be separated from the partial negative pressure region 260.

In some embodiments, the end surface of the first end 223 may protrude from the upper end surface of the rotor core 210, the outer peripheral wall of the rotating shaft 220 abuts against the inner peripheral wall of the through hole 241, and the lower end surface of the flange 243 abuts against the upper end surface of the rotor core 210, that is, the flange 243 abuts against both the rotor core 210 and the rotating shaft 220, so as to ensure that the oil outlet 222 and the local negative pressure region 260 can be separated. Specifically, referring to fig. 9, fig. 9 shows that the compressor 1000 can ensure lubrication and operational reliability of the compressor 1000 using the rotor assembly 200 of the above-described embodiment.

Referring to fig. 2 to 8, in some embodiments, the rotor assembly 200 further includes a second weight 250, the second weight 250 is fixedly connected to the lower end surface of the rotor core 210, and the unbalance amount of the rotor assembly 200 caused by the eccentricity of the rotation shaft 220 can be accurately corrected through the first weight 230 and the second weight 250, so that the rotor assembly 200 can be ensured to rotate stably, and stability is further improved.

Referring to fig. 2, in some embodiments, the baffle 240, the first weight 230, the second weight 250, and the rotor core 210 are fixed by riveting, specifically, using rivets 270; the baffle 240, the first balancing weight 230, the rotor core 210 and the second balancing weight 250 may be sequentially penetrated to perform locking fixation, so that the rotor assembly 200 is stable and reliable in structure. Of course, the baffle 240, the first balancing weight 230, and the second balancing weight 250 may be fixedly connected to the rotor core 210 by bolts, which may be specifically selected according to practical application requirements.

It should be noted that, fig. 2 illustrates that the baffle 240 and the first balancing weight 230 are in a split structure, which is merely an example, in some embodiments, the baffle 240 and the first balancing weight 230 may be in an integrally formed structure, and may be specifically an integrally formed casting or injection molding, which is stable in structure, high in manufacturability, and beneficial to reducing the number of parts.

Referring to fig. 5 to 8, in some embodiments, when the baffle 240 needs to be provided with the flange 243, a sheet metal part or plastic may be used to make the baffle 240, for example, the flange 243 may be formed on the baffle 240 by integral stamping, so as to obtain a sheet metal stamping part formed by integrally forming the baffle 240 and the flange 243, or may be integrally injection molded by plastic, which may be specifically selected according to practical application requirements.

The embodiment of the present utility model also provides a refrigerating apparatus, which may be an air conditioner, such as a split air conditioner, an integrated air conditioner, etc., using the compressor 1000 of the above embodiment and the compressor 1000 using the rotor assembly 200 of the above embodiment.

Since the aperture of the through hole 241 is equal to or larger than the aperture of the oil outlet hole 222, the baffle 240 does not block the oil outlet amount of the oil outlet hole 222; and cooperate with the rotating shaft 220, rotor core 210 through baffle 240, in the circumstances that the perisporium 242 of the through-hole 241 is in contact with the rotating shaft 220, or the perisporium 242 of the through-hole 241 is in contact with the rotor core 210, can separate the oil outlet 222 of the rotating shaft 220 from the local negative pressure region 260 that the balancing piece produced, effectively reduce the pressure difference between oil suction hole and the oil outlet 222 of the rotating shaft 220, avoid too much lubricating oil to be sucked to the upper chamber of the compressor 1000, inhibit the oil output of the oil outlet 222, thus form the stable oil level, achieve the purpose of stabilizing the oil pool, guarantee the lubrication and operational reliability of the compressor 1000.

Since the refrigeration equipment adopts all the technical solutions of the compressor 1000 in the above embodiments, at least all the beneficial effects brought by the technical solutions in the above embodiments are provided, and will not be described in detail herein.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present utility model within the knowledge of one of ordinary skill in the art.

Claims (12)

1. A rotor assembly, comprising:

a rotor core having a shaft hole;

the rotary shaft is provided with a first end part penetrating through the shaft hole, the rotary shaft is provided with an oil passage penetrating along the axial direction of the rotary shaft, and the first end part is provided with an oil outlet communicated with the oil passage;

the balancing weight is fixedly arranged at one end of the rotor iron core, which is close to the oil outlet;

the baffle is connected to one side of the balance block, which is far away from the rotor core, the baffle is provided with a through hole, the aperture of the through hole is larger than or equal to the aperture of the oil outlet, and the peripheral wall of the through hole is abutted to the rotating shaft or the rotor core.

2. The rotor assembly according to claim 1, wherein the first end portion protrudes from an end face of the rotor core, the end face of the first end portion abuts against an end face of the baffle plate facing the rotor core, and an aperture of the through hole is equal to or smaller than an aperture of the shaft hole.

3. The rotor assembly of claim 1 wherein a flange is formed on one side of the baffle, the flange being disposed axially of the rotating shaft and surrounding the through-hole.

4. A rotor assembly according to claim 1 or 3, wherein the first end portion protrudes from an end face of the rotor core, and an inner wall face of the through hole abuts against an outer wall face of the first end portion.

5. A rotor assembly according to claim 3, wherein the end face of the first end portion is flush with the end face of the rotor core facing the baffle plate, the flange is provided facing the rotor core, and an end remote from the baffle plate abuts against the end face of the first end portion or the end face of the rotor core.

6. A rotor assembly according to claim 3, wherein the end face of the first end portion is recessed with respect to the end face of the rotor core, the flange is disposed toward the rotor core, and one end away from the baffle is abutted against the end face of the rotor core, the peripheral wall of the flange is annular, and the outer diameter of the flange is equal to or larger than the aperture of the shaft hole.

7. A rotor assembly according to claim 3, wherein the end face of the first end portion is recessed with respect to the end face of the rotor core, the flange is disposed toward the rotor core, and one end away from the baffle is abutted against the end face of the first end portion, the peripheral wall of the flange is annular, and the outer diameter of the flange is smaller than or equal to the aperture of the shaft hole.

8. A rotor assembly according to claim 3, wherein the baffle is a sheet metal stamping or plastic piece integrally formed with the flange.

9. The rotor assembly of claim 1 wherein the baffle is an integrally molded casting with the counterweight.

10. The rotor assembly of claim 1 wherein the baffle, the weight and the rotor core are riveted or bolted.

11. A compressor, comprising:

a pump body assembly;

the driving mechanism comprises a stator assembly and the rotor assembly as claimed in any one of claims 1 to 10, the rotor core is rotatably arranged in the stator assembly, and one end of the rotating shaft, which is far away from the rotor core, is connected with the pump body assembly.

12. A refrigeration apparatus comprising the compressor of claim 11.