CN221170045U - Air suspension compressor and air conditioning equipment - Google Patents

Abstract

The present disclosure relates to an air suspension compressor and an air conditioning apparatus, wherein the air suspension compressor includes: the cylinder body is internally provided with a first base and a second base at intervals along the axial direction; the stator is arranged in the cylinder body and positioned between the first base and the second base, and a first through hole is formed in the stator along the axial direction; the rotor is arranged in the first through hole in a penetrating way and can rotate relative to the stator; the first radial bearing and the second radial bearing are respectively supported on the first base and the second base and are used for bearing radial force applied to the rotor; the thrust bearing is arranged in the bearing cavity at one side of the first base far away from the stator and is used for bearing the axial force born by the rotor; wherein, form first motor chamber between the first end of first base and stator, form the second motor chamber between the second end of second base and stator, the barrel lateral wall is close to the position in second motor chamber and is equipped with first cooling import, and the barrel lateral wall is equipped with first leakage fluid dram in the position that first motor chamber corresponds, is equipped with the second leakage fluid dram in the position that the bearing chamber corresponds.

Description

Air suspension compressor and air conditioning equipment

Technical Field

The disclosure relates to the technical field of air compression equipment, in particular to an air suspension compressor and air conditioning equipment.

Background

The gas suspension centrifugal compressor belongs to a high-speed compressor, a rotor of the compressor rotates at a high speed in operation, a reliable bearing is needed to support the rotor, the gas bearing supports the rotor to operate by utilizing a gas film, compared with a traditional oil lubrication bearing, lubricating oil is not needed, the phenomenon that the lubricating oil enters a system to reduce the efficiency of the centrifugal machine and the lubricating oil is periodically replaced to generate more maintenance cost can be avoided, in addition, no friction is generated in the operation process of the gas bearing, almost no mechanical loss exists, the efficiency is high, the service life is long, and therefore the gas suspension bearing is increasingly applied to various fields.

Because the gas bearing adopts gas as a working medium, the working environment is dry air, and if liquid enters the air bearing in the working process, the air film is damaged, so that the bearing is in working failure, and the compressor is damaged. When the gas bearing is applied to the refrigeration centrifugal compressor, the refrigeration compressor generally adopts liquid refrigerant to cool the motor, and a large amount of liquid refrigerant generally exists in the motor cavity, so that the gas bearing has failure risk, and the working reliability of the gas suspension compressor is greatly influenced.

Disclosure of utility model

The purpose of the present disclosure is to provide an air suspension compressor and an air conditioning apparatus, which can improve the operational reliability of the air suspension compressor.

According to a first aspect of the present disclosure, there is provided an air suspension compressor comprising:

the cylinder body is internally provided with a first base and a second base at intervals along the axial direction;

the stator is arranged in the cylinder body and positioned between the first base and the second base, and a first through hole is formed in the stator along the axial direction;

the rotor is arranged in the first through hole in a penetrating way and can rotate relative to the stator;

The first radial bearing and the second radial bearing are respectively supported on the first base and the second base and are used for bearing radial force applied to the rotor; and

The thrust bearing is arranged in the bearing cavity at one side of the first base far away from the stator and is used for bearing the axial force received by the rotor;

A first motor cavity is formed between the first base and the first end of the stator, a second motor cavity is formed between the second base and the second end of the stator, a first cooling inlet is formed in the position, close to the second motor cavity, of the side wall of the cylinder, a first liquid outlet is formed in the position, corresponding to the first motor cavity, of the side wall of the cylinder, and a second liquid outlet is formed in the position, corresponding to the bearing cavity; the second end of the stator is provided with a second coil, and the second coil is positioned in a second motor cavity; the position corresponding to the second base on the cylinder body is provided with a second cooling inlet, a second cooling flow passage is arranged in the second base, the first end of the second cooling flow passage is communicated with the second cooling inlet, the second end of the second cooling flow passage is communicated with the second motor cavity, and the position corresponding to the second motor cavity on the side wall of the cylinder body is provided with a third liquid outlet.

In some embodiments, the inner wall of the barrel is provided with a spiral first cooling flow passage, a first end of the first cooling flow passage is communicated with the first cooling inlet, and a second end of the first cooling flow passage is communicated with the first motor cavity.

In some embodiments, the first end of the stator is provided with a first coil, the first coil being located within the first motor cavity, and the second end of the first cooling flow passage being located in the top region of the barrel.

In some embodiments, the gas suspension compressor further comprises an on-off valve for controlling the opening and closing of the first liquid drain, an air gap being provided between the stator and the rotor, the on-off valve being configured to close when the first cooling inlet is filled with the cooling liquid, so that a portion of the cooling liquid enters the air gap.

In some embodiments, the first drain, the second drain, and the third drain are all disposed at a bottom position of the barrel.

In some embodiments, the first cooling inlet and the second cooling inlet are both disposed at a bottom location of the cartridge.

In some embodiments, the air suspension compressor further comprises a thrust disc, wherein the thrust disc is sleeved on the rotor and is positioned in the bearing cavity, two thrust bearings are arranged, and the two thrust bearings are respectively arranged at two sides of the thrust disc along the axial direction.

According to a second aspect of the present disclosure, an air conditioning apparatus is provided, comprising the air suspension compressor of the above embodiment.

Based on the technical scheme, in the air suspension compressor disclosed by the embodiment of the disclosure, the first liquid outlet is formed in the side wall of the cylinder, and the cooling liquid after cooling the motor can flow out of the cylinder through the first liquid outlet, so that the liquid accumulation in the cavity of the first motor can be avoided, the first radial bearing can form a stable air film, and the immersion liquid failure of the first radial bearing can be avoided; and the second liquid outlet is arranged at the position of the side wall of the cylinder body corresponding to the bearing cavity, so that accumulated liquid in the bearing cavity can be timely discharged out of the cylinder body, the thrust bearing is facilitated to form a stable air film, and the immersion liquid failure of the thrust bearing is avoided. Thus, the cooling flow path structure of the gas suspension compressor can improve the working reliability.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate and explain the present disclosure, and together with the description serve to explain the present disclosure. In the drawings:

Fig. 1 is a schematic structural view of some embodiments of the gas suspension compressor of the present disclosure.

Description of the reference numerals

1. A cylinder; 11. a first cooling flow passage; 12. a first cooling inlet; 13. a first liquid discharge port; 14. a second liquid outlet; 15. a second cooling inlet; 16. a third liquid outlet; 2. a stator; 21. a first through hole; 22. a first bobbin; 23. a second coil; 3. a rotor; 4. a first base; 5. a second base; 6. a first radial bearing; 7. a second radial bearing; 8. a thrust plate; 9. a thrust bearing; 10. a sealing structure; 20. an impeller; A. a bearing cavity; B. a first motor cavity; C. a second motor cavity.

Detailed Description

The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without carrying out the inventive task are within the scope of protection of this disclosure.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification.

In the description of the present disclosure, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present disclosure and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present disclosure.

In the description of the present disclosure, it should be understood that the use of terms such as "first," "second," etc. for defining components is merely for convenience in distinguishing corresponding components, and the terms are not meant to be construed as limiting the scope of the present disclosure unless otherwise indicated.

As shown in fig. 1, the present disclosure provides an air suspension compressor, such as an air suspension centrifugal compressor, that, in some embodiments, includes:

a cylinder 1 in which a first base 4 and a second base 5 are disposed at intervals in the axial direction;

The stator 2 is arranged in the cylinder body 1 and positioned between the first base 4 and the second base 5, and the stator 2 is axially provided with a first through hole 21;

A rotor 3 penetrating the first through hole 21, and the rotor 3 is rotatable relative to the stator 2;

a first radial bearing 6 and a second radial bearing 7 respectively supported on the first base 4 and the second base 5 for receiving radial force received by the rotor 3; and

A thrust bearing 9, which is arranged in the bearing cavity A at the side of the first base 4 away from the stator 2 and is used for bearing the axial force received by the rotor 3;

A first motor cavity B is formed between the first base 4 and the first end of the stator 2, a second motor cavity C is formed between the second base 5 and the second end of the stator 2, a first cooling inlet 12 is arranged at a position, close to the second motor cavity C, of the side wall of the cylinder 1, a first liquid outlet 13 is arranged at a position, corresponding to the first motor cavity B, of the side wall of the cylinder 1, and a second liquid outlet 14 is arranged at a position, corresponding to the bearing cavity A; a second coil 23 is arranged at the second end of the stator 2, and the second coil 23 is positioned in the second motor cavity C; the position corresponding to the second base 5 on the cylinder body 1 is provided with a second cooling inlet 15, a second cooling flow passage is arranged in the second base 5, a first end of the second cooling flow passage is communicated with the second cooling inlet 15, a second end of the second cooling flow passage is communicated with a second motor cavity C, and a third liquid outlet 16 is arranged on the side wall of the cylinder body 1 and corresponds to the second motor cavity C. Specifically, the cylinder 1 may be a cylindrical structure, the rotor 3 and the stator 2 form a motor, and are disposed in the cylinder 1, the stator 2 is a rotary part, and is provided with windings, and is fixed in the cylinder 1 by tight fit, so that the rotor 3 rotates at high speed by generating a magnetic field. The central region of the stator 2 is provided with a first through hole 21 along the axial direction, the rotor 3 is arranged in the first through hole 21 in a penetrating way, the stator 2 can be positioned in the middle region of the rotor 3 along the axial direction, and the rotor 3 is in clearance fit with the stator 2.

The first base 4 serves as a bearing seat for the first radial bearing 6 and the second base 5 serves as a bearing seat for the second radial bearing 7. The first radial bearing 6 and the second radial bearing 7 may each have a thrust portion, the thrust portion of the first radial bearing 6 abutting against the end face of the first base 4 remote from the stator 2, and the thrust portion of the second radial bearing 7 abutting against the end face of the second base 5 remote from the stator 2.

The end of the cylinder body 1, which is close to the bearing cavity A, is closed by a sealing structure 10, a comb tooth sealing structure can be arranged between the sealing structure 10 and the rotor 3, an impeller 20 is arranged at one end of the rotor 3, which is positioned outside the cover plate sealing structure, a thrust disc 8 is arranged on the rotor 3, which is positioned between the sealing structure 10 and the first base 4, and a thrust bearing 9 is fixed on at least one end face of the thrust disc 8. When the impeller 20 rotates at a high speed, the gas is rotated, and the gas enters the diffuser to be diffused under the action of centrifugal force, so that the speed energy of the medium at the outlet of the impeller 20 is converted into pressure energy, and then the gas with increased pressure is discharged. The first motor cavity B close to the first base 4 is a front cavity of the motor, and the second motor cavity C close to the second base 5 is a rear cavity of the motor.

For example, the second cooling flow passages may be distributed along the circumferential direction of the second pedestal 5 so that the cooling liquid sufficiently reaches respective positions of the second coil 23 in the circumferential direction; or the second cooling flow passages may be distributed in the radial direction of the second susceptor 5 so that the cooling liquid sufficiently reaches various positions of the second coil 23 in the radial direction.

In this embodiment, the position of the side wall of the barrel 1, which is close to the second motor cavity C, is provided with the first cooling inlet 12, after cooling liquid is introduced from the first cooling inlet 12, the cooling liquid can pass between the stator 2 and the barrel 1 or between the stator 2 and the rotor 3, so as to cool the motor, and then the cooling liquid enters the first motor cavity B, and through the arrangement of the first liquid outlet 13 on the side wall of the barrel 1, the cooling liquid can flow out of the barrel 1 through the first liquid outlet 13, so that the liquid accumulation in the first motor cavity B can be avoided, the formation of a stable air film by the first radial bearing 6 is facilitated, and the failure of the immersion liquid of the first radial bearing 6 is avoided.

In addition, since the first radial bearing 6 has a void structure, there is a possibility that the cooling liquid in the first motor chamber B flows into the bearing chamber a through the first radial bearing 6, and the impeller 20 sucks air from the evaporator and brings liquid into the bearing chamber a through the comb seal structure of the impeller 20. Through being equipped with second leakage fluid dram 14 in barrel 1 lateral wall and the position that bearing chamber A corresponds, can make the hydrops in the bearing chamber A in time discharge barrel 1 outside, be favorable to thrust bearing 9 to form stable air film, avoid thrust bearing 9 immersion liquid inefficacy. Thus, the cooling flow path structure of the gas suspension compressor can improve the working reliability.

Moreover, cooling liquid can be introduced through the second cooling inlet 15 and sprayed onto the second coil 23 through the second cooling flow passage so as to cool the second coil 23 and improve the working reliability of the compressor; after cooling the second coil 23 by the cooling liquid introduced from the second cooling inlet 15, the cooling liquid in the second motor cavity C is timely discharged out of the cylinder 1, so that the cooling liquid in the second motor cavity C is prevented from entering the second radial bearing 7, the second radial bearing 7 is facilitated to form a stable air film, and the second radial bearing 7 is prevented from failing in immersion liquid.

In some embodiments, the inner wall of the cylinder 1 is provided with a spiral first cooling flow channel 11, a first end of the first cooling flow channel 11 is communicated with the first cooling inlet 12, and a second end of the first cooling flow channel 11 is communicated with the first motor cavity B.

According to the embodiment, after the cooling liquid is introduced from the first cooling inlet 12, the cooling liquid flows along the first cooling flow channel 11 on the outer surface of the stator 2, so that the stator 2 is cooled, and finally the cooling liquid enters the first motor cavity B through the second end of the first cooling flow channel 11, so that the outer surface of the stator 2 can be uniformly and fully cooled, the temperature rise of the compressor in the working process is reduced, and the working reliability is improved.

In some embodiments, the first end of the stator 2 is provided with a first coil 22, the first coil 22 being located in the first motor cavity B and the second end of the first cooling flow passage 11 being located in the top region of the cylinder 1. Wherein the first coil 22 is spaced from the first base 4.

In this embodiment, after the cooling liquid passes through the first cooling flow channel 11, in the process of flowing out from the second end located at the top of the cylinder 1 to the first motor cavity B, the sprayed cooling liquid can flow onto the first coil 22 to take away the heat generated by the first coil 22, and cool the first coil 22.

In some embodiments, the gas suspension compressor further comprises an on-off valve for controlling the opening and closing of the first liquid drain port 13, an air gap D being provided between the stator 2 and the rotor 3, the on-off valve being configured to be closed when the first cooling inlet 12 is filled with cooling liquid, so that part of the cooling liquid enters the air gap D. For example, the on-off valve may be an electronically controlled on-off valve.

In this embodiment, when the cooling liquid is introduced from the first cooling inlet 12, if the on-off valve is used to close the first liquid outlet 13, a pressure difference is generated between the first motor cavity B and the second motor cavity C, so that part of the cooling liquid fluid is forced to flow through the air gap D between the stator 2 and the rotor 3, and the outer surface of the rotor 3 and the inner surface of the stator 2 are cooled, so that the temperature of the motor is reduced, and the working reliability of the compressor is improved.

In some embodiments, the first drain 13, the second drain 14, and the third drain 16 are all disposed at a bottom position of the cartridge 1.

Because the coolant liquid is in each intracavity owing to receive the effect of gravity and finally can gather in the bottom region of cavity, through all establishing the bottom position at barrel 1 with first leakage fluid dram 13, second leakage fluid dram 14 and third leakage fluid dram 16, can make the liquid in time discharge from the cavity, even the liquid volume is less in the cavity, also can thoroughly discharge the liquid, prevent that the liquid from bringing the influence to gas bearing's operational reliability.

In some embodiments, the first cooling inlet 12 and the second cooling inlet 15 are both provided at the bottom position of the cartridge 1.

After the cooling liquid is introduced, the flow rate of the cooling liquid can be properly reduced due to the action of gravity, so that the cooling liquid can be more fully contacted with the surface to be cooled, and the cooling effect is enhanced. Moreover, if the first liquid outlet 13, the second liquid outlet 14, the third liquid outlet 16, the first cooling inlet 12 and the second cooling inlet 15 are all arranged at the bottom of the cylinder 1, the cooling liquid inlet pipe and the cooling liquid outlet pipe can be led out from the same circumferential position of the cylinder 1, the connection and the maintenance are convenient, and the pipeline connection is orderly.

In some embodiments, the air suspension compressor further comprises a thrust disc 8, the thrust disc 8 is sleeved on the rotor 3 and is located in the bearing cavity a, two thrust bearings 9 are provided, and the two thrust bearings 9 are respectively arranged on two sides of the thrust disc 8 along the axial direction. Wherein a step may be provided on the rotor 3 to axially locate the thrust disc 8. For example, the thrust bearing 9 may be provided only at one end of the rotor 3, and only the thrust disc 8 and the thrust bearing 9 may be provided at one end of the rotor 3, so that the axial length of the compressor may be shortened and the internal structure of the compressor may be simplified;

According to the embodiment, the uncertainty of the axial force direction of the rotor 3 in the working process is considered, the thrust bearings 9 are respectively arranged on two sides of the thrust disc 8, so that the axial force of the rotor 3 in two directions can be borne simultaneously, the rotor 3 is prevented from being axially unbalanced, the running stability and reliability of the compressor in all-condition running and reversing are ensured, and the service life of the thrust bearings 9 in the compressor is prolonged.

In some specific embodiments, as shown in fig. 1, a first cooling inlet 12 is disposed on a position, close to the second motor cavity C, of the side wall of the barrel 1, a second cooling inlet 15 is disposed on a position, corresponding to the second base 5, of the barrel 1, a second cooling flow channel is disposed in the second base 5, a first end of the second cooling flow channel is communicated with the second cooling inlet 15, and a second end of the second cooling flow channel is communicated with the second motor cavity C. The side wall of the cylinder body 1 is provided with a first liquid outlet 13 at a position corresponding to the first motor cavity B, and a second liquid outlet 14 at a position corresponding to the bearing cavity A; a third liquid outlet 16 is arranged on the side wall of the cylinder body 1 at a position corresponding to the second motor cavity C.

The air suspension compressor is provided with the 'two-inlet three-outlet' multi-channel cooling flow path on the cylinder body 1, and when the compressor works, cooling liquid is simultaneously introduced through the first cooling inlet 12 and the second cooling inlet 15 so as to cool the stator 2, the rotor 3, the first coil 22 and the second coil 23, namely, when the motor is cooled, liquid in the bearing cavity A, the first motor cavity B and the second motor cavity C is respectively discharged out of the cylinder body 1 in time through the first liquid discharge port 13, the second liquid discharge port 14 and the third liquid discharge port 16, liquid is prevented from flowing into the air bearing, the working stability of the air bearing is ensured, and the working reliability of the air suspension compressor is improved.

Next, the present disclosure also provides an air conditioning apparatus including the air suspension compressor of the above embodiment. The air conditioning equipment comprises a refrigeration cycle system formed by a condenser, an evaporator and a compressor, wherein the cooling liquid in the compressor can be derived from a refrigerant in the refrigeration cycle system.

Because the air suspension compressor has higher working reliability, the air conditioning equipment adopting the air suspension compressor also has higher reliability.

The air suspension compressor and the air conditioning equipment provided by the present disclosure are described in detail above. Specific examples are set forth herein to illustrate the principles and embodiments of the present disclosure, and the above examples are merely intended to aid in understanding the methods of the present disclosure and the core ideas thereof. It should be noted that it would be apparent to those skilled in the art that various improvements and modifications could be made to the present disclosure without departing from the principles of the present disclosure, and such improvements and modifications would be within the scope of the claims of the present disclosure.

Claims (8)

1. An air suspension compressor comprising:

a cylinder (1) in which a first base (4) and a second base (5) are arranged at intervals along the axial direction;

The stator (2) is arranged in the cylinder body (1) and positioned between the first base (4) and the second base (5), and the stator (2) is provided with a first through hole (21) along the axial direction;

A rotor (3) penetrating the first through hole (21), wherein the rotor (3) can rotate relative to the stator (2);

A first radial bearing (6) and a second radial bearing (7) respectively supported on the first base (4) and the second base (5) and used for bearing radial force received by the rotor (3); and

A thrust bearing (9) arranged in a bearing cavity (A) at one side of the first base (4) far away from the stator (2) and used for bearing the axial force born by the rotor (3);

A first motor cavity (B) is formed between the first base (4) and the first end of the stator (2), a second motor cavity (C) is formed between the second base (5) and the second end of the stator (2), a first cooling inlet (12) is formed in the position, close to the second motor cavity (C), of the side wall of the cylinder body (1), a first liquid outlet (13) is formed in the position, corresponding to the first motor cavity (B), of the side wall of the cylinder body (1), and a second liquid outlet (14) is formed in the position, corresponding to the bearing cavity (A);

A second coil (23) is arranged at the second end of the stator (2), and the second coil (23) is positioned in the second motor cavity (C); the novel cooling device is characterized in that a second cooling inlet (15) is formed in the barrel (1) and corresponds to the second base (5), a second cooling flow passage is formed in the second base (5), a first end of the second cooling flow passage is communicated with the second cooling inlet (15), a second end of the second cooling flow passage is communicated with the second motor cavity (C), and a third liquid outlet (16) is formed in the side wall of the barrel (1) and corresponds to the second motor cavity (C).

2. The gas suspension compressor according to claim 1, characterized in that the inner wall of the cylinder (1) is provided with a spiral-shaped first cooling flow channel (11), a first end of the first cooling flow channel (11) is communicated with the first cooling inlet (12), and a second end of the first cooling flow channel (11) is communicated with the first motor cavity (B).

3. The gas suspension compressor according to claim 2, characterized in that a first end of the stator (2) is provided with a first coil (22), the first coil (22) being located in the first motor chamber (B), and a second end of the first cooling flow channel (11) being located in a top region of the cylinder (1).

4. The gas suspension compressor according to claim 1, further comprising an on-off valve for controlling the opening and closing of the first liquid drain (13), an air gap (D) being provided between the stator (2) and the rotor (3), the on-off valve being configured to be closed when the first cooling inlet (12) is fed with cooling liquid, so that part of the cooling liquid enters the air gap (D).

5. The gas suspension compressor according to claim 1, characterized in that the first liquid outlet (13), the second liquid outlet (14) and the third liquid outlet (16) are all arranged at the bottom position of the cylinder (1).

6. Gas suspension compressor according to claim 5, characterized in that the first cooling inlet (12) and the second cooling inlet (15) are both provided at the bottom position of the cylinder (1).

7. A gas suspension compressor according to any one of claims 1-4, further comprising a thrust disc (8), said thrust disc (8) being arranged around said rotor (3) and within said bearing chamber (a), said thrust bearings (9) being provided in two, two of said thrust bearings (9) being arranged on each side of said thrust disc (8) in said axial direction.

8. An air conditioning apparatus comprising an air suspension compressor according to any one of claims 1 to 7.