CN212225520U

CN212225520U - External rotor rotary compressor

Info

Publication number: CN212225520U
Application number: CN202020727899.8U
Authority: CN
Inventors: 赵乾麟; 柳文; 周群; 赵屹; 管秀玉; 黄乾利; 方炳平; 程睛
Original assignee: Zhejiang Cheering Sewing Machine Co ltd
Current assignee: Zhejiang Cheering Sewing Machine Co ltd
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2020-12-25
Anticipated expiration: 2030-05-07

Abstract

The utility model discloses an outer rotor rotary compressor who comprises casing, stator, rotor, apron, slider has set up the rotor and the stator of motor in the cavity by casing and apron, and wherein the motor is outer rotor type motor, and piston design through with rotor and compressor is as an organic whole, has realized the integration of motor and compressor, makes the volume and the weight of compressor descend by a wide margin. In addition, the coil part of the motor stator is isolated from the compressed gas of the compressor, so that the combination points of static and dynamic parts are reduced, the corrosion of the refrigeration gas to the coil and the pollution of the motor lubricating oil to the refrigeration gas are avoided, and the reliability and the performance of the outer rotor rotary compressor are improved. The invention also has the characteristics of simple structure and easy processing.

Description

External rotor rotary compressor

Technical Field

The utility model belongs to the technical field of the compressor and specifically relates to an external rotor rotary compressor is related to.

Background

The rotary compressor is a new type of compressor, and its motor does not need to convert the rotary motion of rotor into reciprocating motion of piston, but directly drives the rotary piston to make rotary motion to complete the compression of refrigerant vapor. Its main advantage is: because the piston rotates, the compression work is smooth and stable, and the piston has the advantages of high compression efficiency, few parts, small volume, light weight, good balance performance, low noise, complete protection measures, low power consumption and the like. In particular, the outer rotor motor is combined with the rotary compressor, so that the structure of the rotary compressor is further compact, and the mechanical efficiency is further improved. For example, in the manufacturing process of a refrigerator, since the design size of a compressor of a refrigerator system is strict, it is especially required to ensure that the height of the refrigerator system meets the design requirements of the system. The refrigerator compressor works indoors, so that the requirement on vibration noise is high. At the same time, it is also necessary to satisfy the varying refrigeration requirements of the refrigerator. The outer rotor motor is adopted, so that the total height of the vertical rotary compressor can be effectively reduced, and the design requirement of a refrigerator system is met.

However, the existing external rotor rotary compressor designs all adopt a method of combining the motor and the compressor in sections. The compressor has a relatively heavy body due to the increased volume and weight of the compressor caused by the arrangement of the power part and the compression part. When applied to household appliances such as refrigerators, air conditioners and the like, the air conditioner also occupies limited space of the appliances.

SUMMERY OF THE UTILITY MODEL

Technical defect to current external rotor rotary compressor existence, the utility model aims to provide an external rotor rotary compressor's new design to solve the technical problem who exists among the prior art, make external rotor rotary compressor's performance can obtain guaranteeing.

The utility model discloses a realize through following mode: the utility model provides an outer rotor rotary compressor, comprises casing, stator, rotor, end cover, slider, the casing both ends be equipped with the end cover, have the cavity in, the stator fix in the cavity, the stator is fixed in the end cover axle center, the coiling has stator coil on the stator, the rotor rotatably the cover establish the stator is outside, the orientation of rotor the inboard of stator is inlayed and is equipped with the magnet, the end cover with stator and rotor seal in the casing its characterized in that: the rotor axis is in an eccentric design, the long shaft end of the rotor is tangent to the inner wall of the cavity of the shell, a slider groove is arranged on the circumferential wall of the shell, a slider is arranged in the slider groove, the slider can move in the slider groove in the radial direction, one end of the slider is connected with the bottom of the slider groove through a return spring, the other end of the slider is tangent to the circumferential wall of the outer rotor, and the slider spring is sealed in the slider groove through a slider groove cover; the two ends of the rotor are also provided with rotor side wing plates which are fixedly arranged on the two sides of the rotor and coaxial with the shell, and the outer edges of the rotor side wing plates are in clearance fit with the inner wall of the shell.

Further: the axis of the stator is a hollow shaft, and the wiring of the coil winding on the stator is led out of the shell through the hollow shaft.

Further: the rotor is also provided with a half-moon-shaped cavity.

Further: and a half-moon-shaped cavity which is in the same shape as the rotor is also arranged on the rotor side wing plate.

The utility model discloses external rotor rotary compressor through the piston design with rotor and compressor as an organic whole, has realized the integration of motor and compressor, makes the volume and the weight of compressor descend by a wide margin. In addition, the coil part of the motor stator is isolated from the compressed gas of the compressor, so that the corrosion of the refrigerant gas to the coil and the pollution of the motor lubricating oil to the refrigerant gas are avoided, and the reliability and the performance of the outer rotor rotary compressor are improved.

Just the utility model discloses still have simple structure, characteristics easy to process.

The present invention will be described in further detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic view of the appearance structure of the present invention;

FIG. 2 is a schematic cross-sectional view of a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a stator in an embodiment of the present invention;

FIG. 4 is a structural cross-sectional view of a radial surface of a second embodiment of the present invention;

fig. 5 is a schematic structural view of an outer rotor in a second embodiment of the present invention;

fig. 6 is a schematic structural view of a rotor side wing plate according to a second embodiment of the present invention.

In the figure: 1. a housing; 2. an end cap; 3. a stator shaft cap; 4. A socket; 5. An air inlet pipe; 6. An air outlet pipe; 7. a slider slot cover; 8. an outer rotor; 9. a stator; 10. a stator shaft; 11. a wire; 12. A slider; 13. a slider spring; 14. A wire guide hole; 15. A rotor flank plate; 16. a permanent magnet; 17. a half-moon shaped cavity a; 18. a half-moon shaped cavity b.

Detailed Description

Example 1: as shown in fig. 1 and 2, the rotary compressor with an outer rotor 8 comprises a housing 1, a stator 9, a rotor, a cover plate, a slider 12 and other components, wherein the housing 1 is cylindrical, the cover plate is arranged at two ends of the housing 1, a cavity is formed in the housing 1, and a motor and a compressor component included in the rotary compressor are both arranged in the cavity. The side wall of the cylindrical shell 1 is provided with an air inlet pipe 5 and an air outlet pipe 6, a sliding block 12 groove is arranged between the two pipes, a sliding block 12 is installed in the sliding block 12 groove, the sliding block 12 is in clearance fit with the sliding block 12 groove, the sliding block 12 can slide in the sliding block 12 groove, and the length of the sliding block 12 and the sliding block 12 groove is equal to the thickness of the outer rotor 8.

The slide block 12 is a rectangular cuboid, the transverse end of the slide block is embedded into a groove of the slide block 12, one end of the slide block 12 is connected with the bottom of the groove of the slide block 12 through a slide block spring 13, and the other end of the slide block is tangent to the circumferential wall of the outer rotor 8. The slider spring 13 is kept in a state of always being tangent to the outer circumferential wall of the outer rotor 8 by its force.

The outer end of the slider 12 groove is provided with a slider groove cover 7, whereby the slider groove cover 7 encloses the slider spring 13 in the slider 12 groove.

The motor is an outer rotor type motor, namely the matching mode of a stator 9 and a rotor of the motor is opposite to that of a conventional motor, the middle shaft is the stator 9, the outer ring is the rotor, and a so-called outer rotor 8 is formed.

The outer rotor 8 is made of steel materials and has a shape as shown in fig. 5, the axis circle of the outer rotor 8 is eccentrically arranged, and the maximum distance end between the outer circle of the outer rotor 8 and the axis circle is tangent to the inner circle of the shell.

Permanent magnets 16 are arranged on the inner wall of the axis circle of the outer rotor 8, and the arrangement number of the permanent magnets 16 is the same as that of a conventional motor, so that the detailed description is omitted.

As shown in fig. 3, the stator 9 of the motor is formed by punching silicon steel sheets, then coils are wound on an iron core formed by the silicon steel sheets, and the wiring between the coils is completed according to the conventional motor technology.

The stator shaft 10 is a hollow shaft, the end of the shaft is provided with a wire hole 14, and after a wire 11 on the stator winding penetrates through the wire hole 14, the wire is led out of the shell 1 through the axis of the stator shaft 10 and is connected with a socket 4 arranged on a stator shaft cap 3.

The rotor side wing plate 15 is a disk cover plate with a shaft hole, and the diameter of the outer circle of the disk is the same as the inner diameter of the cylinder of the shell 1 and is in clearance fit with the inner diameter of the cylinder of the shell 1. During installation, the discs of the two rotor side wing plates 15 and the outer rotor 8 are clamped and fixed together, so that a rotary cylinder of the compressor is formed by the circumferential combination of the rotor side wing plates 15 and the outer rotor 8, the rotor side wing plates 15 and the outer rotor 8 rotate simultaneously, and the volume change of the rotary cylinder is realized under the matching of the sliding blocks, so that the compression process of gas is realized.

The rotor side wing plate 15 is in clearance fit with the inner wall of the shell 1 and then is sealed by lubricating oil fed into the cylinder body.

The stator shaft 10 is fixedly connected with the cover plates 2 at two ends of the shell 1 in an interference fit or welding mode, so that the shell 1 can fix and support the stator.

When the rotary compressor is actually used, the air inlet pipe is connected to the outlet of the cold ice liquid oil storage tank, and the air outlet pipe 6 is provided with a one-way check valve. During operation, the outer rotor 8 rotates, vacuum is generated on one side of the air inlet pipe 5 of the compressor pump body 1, cold ice liquid is sucked into a low-pressure area in the pump body through the air inlet pipe, along with the rotation of the outer rotor 8, the space volume of the low-pressure area in the pump body is gradually increased, the space volume of a high-pressure area is gradually reduced, air is compressed, high-pressure air is output through the air outlet pipe 6, and the backflow of the high-pressure air is prevented by the check valve of the air outlet pipe 6.

Example 2: fig. 4 shows an external rotor rotary compressor, which has the same main body embodiment as that of the embodiment 1. In order to solve the problem of weight asymmetry of outer rotor 8, outer rotor 8 is machined into the shape shown in fig. 5, that is, half-moon-shaped cavities 17a are punched on the disk of outer rotor 8, so that outer rotor 8 with asymmetry realizes weight balance. In order to improve the heat dissipation effect of the motor, a half-moon-shaped cavity 17b which is the same as that on the rotor plane is formed on the rotor side wing plate 15, heat dissipation holes are additionally formed in the end face of the end cover 2, a heat dissipation channel from the stator to the end cover 2 in the compressor is formed, and the temperature in the compressor can be led out of the machine body through the heat dissipation channel.

Claims

1. The utility model provides an outer rotor rotary compressor, comprises casing, stator, rotor, end cover, slider, the casing both ends be equipped with the end cover, have the cavity in, the stator fix in the cavity, the stator is fixed in the end cover axle center, the coiling has stator coil on the stator, the rotor rotatably the cover establish the stator is outside, the orientation of rotor the inboard of stator is inlayed and is equipped with the magnet, the end cover with stator and rotor seal in the casing its characterized in that: the rotor axis is in an eccentric design, the long shaft end of the rotor is tangent to the inner wall of the cavity of the shell, a slider groove is arranged on the circumferential wall of the shell, a slider is arranged in the slider groove, the slider can move in the slider groove in the radial direction, one end of the slider is connected with the bottom of the slider groove through a return spring, the other end of the slider is tangent to the circumferential wall of the outer rotor, and the slider spring is sealed in the slider groove through a slider groove cover; the two ends of the rotor are also provided with rotor side wing discs which are fixedly arranged on the two sides of the rotor and coaxial with the shell, and the outer edges of the rotor side wing discs are in clearance fit with the inner wall of the shell.

2. The external rotor rotary compressor of claim 1, wherein the stator has a hollow shaft, the shaft is provided with a wire hole, and the coil winding wire of the stator is led out of the casing through the hollow shaft after passing through the wire hole, and is connected to a socket provided on a stator shaft cap outside the casing.

3. The external rotor rotary compressor of claim 1, further characterized in that said rotor further includes a half-moon shaped cavity.

4. The external rotor rotary compressor of claim 1, further characterized in that the rotor wing disk is further provided with a half-moon shaped cavity having the same shape as the rotor.