CN211127354U

CN211127354U - Rotor, motor and compressor

Info

Publication number: CN211127354U
Application number: CN201921878955.1U
Authority: CN
Inventors: 范清姗; 龚海涛; 余业甲; 刘磊
Original assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Landa Compressor Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Landa Compressor Co Ltd
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2020-07-28
Anticipated expiration: 2029-11-04

Abstract

The utility model discloses a rotor, a motor and a compressor, wherein the rotor comprises a rotor core, the rotor core is provided with a through-flow hole, and the through-flow hole is axially formed; the end of the through flow hole far away from the pump body assembly is a large opening end, and the end of the through flow hole close to the pump body assembly is a small opening end. Rotor, through the through-flow hole of seting up axial fashioned, horn mouth form, rotor core weight reduces along the axial, the inertia of rotor diminishes, rotor core's deformation is improved. And the fluid flows along the through-flow hole in the compressor, obtains buffering at the upper end portion, and the refrigeration oil loss reduces, and rotor core cooling effect is better, reduces the temperature rise, does benefit to and improves motor efficiency.

Description

Rotor, motor and compressor

Technical Field

The utility model belongs to the refrigeration field especially relates to a rotor, motor and compressor.

Background

The current vertical compressor motor rotor iron core sets up through-flow hole structure more, mainly has following advantage: 1. the air suction and the air exhaust are smooth; 2. the cooling of the rotor is accelerated, and the influence of high temperature on the efficiency of the motor is avoided. The conventional through hole structure is generally a through type with the same radial size, but when the rotating speed of a motor is high, the hidden trouble of carrying refrigeration oil exists in the exhaust of a compressor, the compressor runs for a long time, the refrigeration oil reduces the quality of a pump body, the service life of the compressor is influenced, and the cooling effect of the through hole of the through structure on a rotor core is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rotor, motor and compressor to solve the not good enough problem of rotor core cooling effect.

In order to achieve the above object, the present invention provides a rotor having the following technical solutions:

a rotor comprises a rotor iron core, wherein through-flow holes are formed in the rotor iron core and are axially formed; the end of the through flow hole far away from the pump body assembly is a large opening end, and the end of the through flow hole close to the pump body assembly is a small opening end.

Further, the large opening end and the small opening end of the through-flow hole are in linear transition.

Furthermore, magnetic piece slots are formed in the periphery of the shaft hole of the rotor core, and magnetic steel is inserted in the magnetic piece slots.

Furthermore, the number of the magnetic piece slots is consistent with that of the through-flow holes.

Furthermore, the magnetic piece slots correspond to the through-flow holes one by one, and each magnetic piece slot is respectively positioned at one side of the corresponding through-flow hole, which is far away from the shaft hole.

Furthermore, the central angle α corresponding to the maximum size of the width of the large opening end is smaller than the central angle β corresponding to the width of the magnetic piece slot.

The utility model also provides a motor, concrete scheme is as follows:

an electric machine comprises the rotor.

The utility model also provides a compressor, concrete scheme is as follows:

a compressor comprises a pump body assembly and the rotor.

Further, the pump body assembly comprises a crankshaft and a roller, the rotor is installed at one end of the crankshaft through a shaft hole, and the roller is driven by the crankshaft.

The utility model discloses a rotor, motor and compressor have following advantage: by forming the through-flow holes in the shape of a bell mouth formed in the axial direction, the weight of the rotor core is reduced in the axial direction, the rotational inertia of the rotor is reduced, and the deformation of the rotor core is improved. And the fluid flows along the discharge orifice in the compressor, obtains buffering in the upper end portion, and the refrigeration oil loss reduces, and rotor core cooling effect is better, reduces the temperature rise, does benefit to and improves motor efficiency.

Drawings

FIG. 1 is a schematic view of the connection structure of the pump body assembly and the rotor of the present invention;

FIG. 2 is a schematic view of the rotor structure of the present invention;

FIG. 3 is a cross-sectional view of a through-flow aperture of the present invention;

fig. 4 is a schematic view of the correspondence between the through-flow holes and the magnetic slots of the present invention.

The notation in the figure is:

1. a cylinder body; 2. an upper flange; 3. a lower flange; 4. a crankshaft; 5. a roller; 6. a rotor core; 61. a shaft hole; 62. a through-flow aperture; 621. a large opening end; 622. a small opening end; 63. a magnetic piece slot; 7. a primary counterbalance; 8. a secondary counterbalance; 9. a flow blocking cap.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, the following description of the rotor, the motor and the compressor according to the present invention is made in detail with reference to the accompanying drawings.

As shown in fig. 1, the compressor or the motor of the present invention includes a housing, a pump body assembly and a rotor, wherein the rotor and the pump body assembly are both installed in the housing. The pump body assembly comprises a cylinder body 1, an upper flange 2 and a lower flange 3. The upper flange 2 and the lower flange 3 are fixedly connected with two sides of the cylinder body 1 respectively through the same group of bolts. A volume cavity and a slide sheet groove are formed in the cylinder body 1, a rotor is arranged in the volume cavity, and a slide sheet is arranged in the slide sheet groove. Also provided in the housing is a crankshaft 4, a rotor is mounted on one end of the crankshaft 4, and rollers 5 are mounted on the eccentric portion of the crankshaft 4. Thereby, the crankshaft 4 is driven to rotate through the rotor, the roller 5 rotates along with the crankshaft 4 in the volume cavity, the slide sheet slides along the slide sheet groove, and the compressor moves.

As shown in fig. 2 and 3, the rotor includes a rotor core 6 and magnetic steel. A shaft hole 61 is opened in the center of the rotor core 6, and the rotor core is attached to the crankshaft 4 through the shaft hole 61. The rotor core 6 is provided with through-holes 62 uniformly around the shaft hole 61. The axially formed flow openings 62 are flared. The end of the flow hole 62 remote from the pump body assembly is a large-mouth end 621, and the end of the flow hole 62 close to the pump body assembly is a small-mouth end 622. And the large mouth end 621 and the small mouth end 622 of the through-flow hole 62 are in linear transition. Like this, refrigerant refrigeration oil reaches the upper end along the route in hole from the macrostoma 622, and fluid is from the macrostoma to the macrostoma, and the fluid obtains the buffering, and the refrigeration oil loss can reduce, and the area grow of fluid flow through rotor core 6, and the cooling effect is strengthened, is favorable to the cooling of iron core. And through setting up tubaeform through-flow hole 62, rotor upper end weight reduces, and the inertia of rotor reduces, and the effect is more obvious more the upper end, can improve the problem of rotor deformation.

And the through-flow holes 62 may be either arranged along an arc or be circular.

The rotor core 6 is provided with a magnetic piece slot 63 around the shaft hole 61, and a magnetic steel is inserted in the magnetic piece slot 63. The magnetic steel is circumferentially distributed on the edge of the rotor core 6 and is in a regular polygon shape.

The number of the magnetic piece slots 63, i.e., the number of poles, is the same as the number of the through holes 62, the magnetic piece slots 63 correspond to the through holes 62 one by one, and each magnetic piece slot 63 is respectively located on one side of the corresponding through hole 62, which is far away from the shaft hole 61. referring to fig. 4, the central angle α corresponding to the maximum size of the width of the large opening end 621 is smaller than the central angle β corresponding to the width of the magnetic piece slot.

In addition, a main balance block 7 and an auxiliary balance block 8 are respectively riveted at two ends of the rotor core 6, and a flow blocking cap 9 is arranged between the rotor core 6 and the auxiliary balance block 8.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. The utility model provides a rotor, includes rotor core (6), is equipped with through-flow hole (62) on rotor core (6), its characterized in that, through-flow hole (62) axial molding, and the one end that pump body subassembly was kept away from in through-flow hole (62) is big mouth end (621), and the one end that through-flow hole (62) are close to pump body subassembly is little mouth end (622).

2. The rotor as recited in claim 1, characterized in that the throughflow holes (62) are linearly transitional with the large mouth end (621) and the small mouth end (622).

3. The rotor according to claim 1, characterized in that the rotor core (6) is provided with magnetic slots (63) around the shaft hole (61), and magnetic steel is inserted into the magnetic slots (63).

4. A rotor according to claim 3, characterized in that the number of magnetic element slots (63) corresponds to the number of throughflow holes (62).

5. The rotor as recited in claim 4, characterized in that the magnetic piece insertion grooves (63) and the through-flow holes (62) are in one-to-one correspondence, and each magnetic piece insertion groove (63) is respectively located on the side of the corresponding through-flow hole (62) away from the shaft hole (61).

6. The rotor as claimed in claim 5, wherein the maximum dimension of the width of the large mouth end corresponds to a central angle α smaller than the central angle β corresponding to the width of the magnetic element slot.

7. An electrical machine comprising a rotor according to any one of claims 1-6.

8. A compressor comprising a pump body assembly and a rotor according to any one of claims 1 to 6.

9. A compressor according to claim 8, characterized in that the pump block assembly comprises a crankshaft (4) and a roller (5), the rotor being mounted at one end of the crankshaft (4) through a shaft hole (61), the roller (5) being driven by the crankshaft (4).