Air suspension compressor and air conditioning system

Abstract

The invention relates to the technical field of refrigeration, and discloses an air suspension compressor which comprises a machine shell, a main shaft arranged in the machine shell, a high-pressure air inlet pipe for supplying air to an air bearing and a low-pressure exhaust pipe for exhausting air from the air bearing, and further comprises a main bearing assembly, a main bearing air supply pipeline, a standby bearing assembly and a standby bearing air supply pipeline. The main bearing air supply pipeline can achieve air intake, air exhaust and flushing of the main bearing assembly, and the standby bearing air supply pipeline can achieve air intake, air exhaust and flushing of the standby bearing assembly. It can be seen that the air suspension compressor is provided with the main bearing assembly and the standby bearing assembly at the same time, when the main bearing assembly is blocked, the standby bearing assembly can continue to rotate, online flushing of the main bearing assembly can be achieved, and the operation stability of the air suspension compressor is improved. The invention further discloses an air conditioning system comprising the air suspension compressor.

Description

Technical Field

[0001] The present application relates to the technical field of compressors, for example, to an air suspension compressor and an air conditioning system. Background Art

[0002] Centrifugal compressors are core components of air-conditioning systems such as chillers and heat pump units. Taking chillers as an example, the refrigeration process of air-conditioning systems is roughly as follows: low-temperature, low-pressure refrigerant gas is compressed by a centrifugal compressor and becomes high-temperature, high-pressure refrigerant gas. The high-temperature, high-pressure refrigerant gas passes through the condenser to take away heat and condense into high-temperature, high-pressure refrigerant liquid. The refrigerant liquid is expanded by expansion devices such as expansion valves and becomes a low-temperature, low-pressure refrigerant gas-liquid mixture. The low-temperature, low-pressure refrigerant gas-liquid mixture enters the evaporator to absorb heat and evaporates into low-temperature, low-pressure refrigerant gas. The refrigerant gas is sucked in and compressed by the centrifugal compressor again to enter the next cycle. During the whole process, the refrigerant absorbs heat in the evaporator and releases heat in the condenser, which is manifested externally as heat transfer to achieve refrigeration.

[0003] The gas suspension centrifugal compressor supported by gas static pressure bearings is generally equipped with two radial gas static pressure bearings and one thrust gas static pressure bearing. Among them, the gas bearing is made of microscopic porous material, and the gas pressure is evenly distributed on the journal and thrust plate through the porous material, so that the journal and thrust plate are suspended on the bearing shell. In this way, the friction force is very small when the compressor is running, and the static pressure bearing must be continuously supplied with gas and pressure during the whole process.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] The existing gas-suspended centrifugal compressor supported by gas hydrostatic bearings generally uses micro-porous materials as bearing shells. The gas supplying pressure to the bearings will contain more or less impurities. When the hydrostatic bearings run for a long time, the impurities will clog the micro-pores of the bearing shells, resulting in insufficient gas supply pressure. The bearings will have difficulty dragging the journal and thrust plate, causing dry grinding, locking, and even damage to the bearings.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiment of the present disclosure provides an air suspension compressor, comprising a casing, a main shaft arranged in the casing, a high-pressure air intake pipe for supplying air to a gas bearing and a low-pressure exhaust pipe for exhausting the gas bearing, and further comprising: a main bearing assembly, comprising a main gas radial bearing group and a main gas thrust bearing; a main bearing air supply pipeline, used for supplying air and exhausting gas and flushing the main bearing assembly, the main bearing air supply pipeline comprising a first main air intake and exhaust pipeline and a second main air intake and exhaust pipeline connected to the main bearing assembly, and the first main air intake and exhaust pipeline is connected to the high-pressure air intake pipe and the low-pressure exhaust pipe, and the second main air intake and exhaust pipeline is connected to the high-pressure air intake pipe and the low-pressure exhaust pipe; a spare bearing assembly, comprising a spare gas radial bearing group and a spare gas thrust bearing; a spare bearing air supply pipeline, used for supplying air and exhausting gas and flushing the spare bearing assembly, the spare bearing air supply pipeline comprising a first spare air intake and exhaust pipeline and a second spare air intake and exhaust pipeline connected to the spare bearing assembly, and the first spare air intake and exhaust pipeline is connected to the high-pressure air intake pipe and the low-pressure exhaust pipe, and the second spare air intake and exhaust pipeline is connected to the high-pressure air intake pipe and the low-pressure exhaust pipe.

[0009] It can be seen that the air suspension compressor provided in the present application is provided with a main bearing assembly and a spare bearing assembly at the same time. When the main bearing assembly is blocked, the spare bearing assembly can be used to continue to rotate, and the main bearing assembly can be flushed online, thereby improving the operating stability of the air suspension compressor.

[0010] In some optional embodiments, the first main intake and exhaust pipeline includes a first main connecting pipeline directly connected to the main bearing assembly, a main intake pipeline connecting the first main connecting pipeline and the high-pressure intake pipe, and a main exhaust pipeline connecting the first main connecting pipeline and the low-pressure exhaust pipe; the second main intake and exhaust pipeline includes a second main connecting pipeline directly connected to the main bearing assembly, a first main flushing pipeline connecting the second main connecting pipeline and the high-pressure intake pipe, and a second main flushing pipeline connecting the second main connecting pipeline and the low-pressure exhaust pipe.

[0011] The intake and exhaust of the main bearing assembly are realized through the first main intake and exhaust pipelines, and the online flushing of the main bearing assembly is realized through the second main intake and exhaust pipelines.

[0012] The first backup intake and exhaust pipeline includes a first backup connecting pipeline directly connected to the backup bearing assembly, a backup intake pipeline connecting the first backup connecting pipeline and the high-pressure intake pipe, and a backup exhaust pipeline connecting the first backup connecting pipeline and the low-pressure exhaust pipe; the second backup intake and exhaust pipeline includes a second backup connecting pipeline directly connected to the backup bearing assembly, a first backup flushing pipeline connecting the second backup connecting pipeline and the high-pressure intake pipe, and a second backup flushing pipeline connecting the second backup connecting pipeline and the low-pressure exhaust pipe.

[0013] The air intake and exhaust of the spare bearing assembly are realized through the first spare air intake and exhaust pipeline, and the online flushing of the spare bearing assembly is realized through the second spare air intake and exhaust pipeline.

[0014] In some optional embodiments, the main intake pipeline is provided with a first valve, and the main exhaust pipeline is provided with a second valve; the first main flushing pipeline is provided with a third valve, and the second main flushing pipeline is provided with a fourth valve; the spare intake pipeline is provided with a fifth valve, and the spare exhaust pipeline is provided with a sixth valve; the first spare flushing pipeline is provided with a seventh valve, and the second spare flushing pipeline is provided with an eighth valve.

[0015] The operation or flushing of different bearing components can be achieved by controlling the opening or closing of multiple valves.

[0016] In some optional embodiments, the main gas radial bearing group includes a first main gas radial bearing and a second main gas radial bearing, wherein the first main connecting pipeline includes a first main confluence pipeline, a first main branch pipeline connected to the first main gas radial bearing, a second main branch pipeline connected to the second main gas radial bearing, and a third main branch pipeline connected to the main gas thrust bearing; the second main connecting pipeline includes a second main confluence pipeline, a fourth main branch pipeline connected to the first main gas radial bearing, a fifth main branch pipeline connected to the second main gas radial bearing, and a sixth main branch pipeline connected to the main gas thrust bearing.

[0017] The first main connecting pipeline supplies or exhausts gas to each gas bearing in the main bearing assembly in the form of converging and diverting. The second main connecting pipeline also supplies or exhausts gas to each gas bearing in the main bearing assembly in the form of converging and diverting. The operation or flushing of the main bearing assembly is realized.

[0018] In some optional embodiments, the backup gas radial bearing group includes a first backup gas radial bearing and a second backup gas radial bearing, wherein the first backup connecting pipeline includes a first backup confluence pipeline, a first backup branch pipeline connected to the first backup gas radial bearing, a second backup branch pipeline connected to the second backup gas radial bearing, and a third backup branch pipeline connected to the backup gas thrust bearing; the second backup connecting pipeline includes a second backup confluence pipeline, a fourth backup branch pipeline connected to the first backup gas radial bearing, a fifth backup branch pipeline connected to the second backup gas radial bearing, and a sixth backup branch pipeline connected to the backup gas thrust bearing.

[0019] The first spare connecting pipeline supplies or exhausts gas to each gas bearing in the spare bearing assembly in the form of converging and diverting. The second spare connecting pipeline also supplies or exhausts gas to each gas bearing in the spare bearing assembly in the form of converging and diverting. The operation or flushing of the spare bearing assembly is realized.

[0020] In some optional embodiments, the main shaft includes a first support area near the first end and a second support area near the second end, wherein the first main gas radial bearing and the first backup gas radial bearing are arranged in the first support area, and the second main gas radial bearing and the second backup gas radial bearing are arranged in the second support area.

[0021] In this way, both the main bearing assembly and the spare bearing assembly can provide balanced support for the main shaft.

[0022] In some optional embodiments, from the first end to the second end of the main shaft, a first main gas radial bearing, a first backup gas radial bearing, a second main gas radial bearing and a second backup gas radial bearing are arranged in sequence, and a main gas thrust bearing and a backup gas thrust bearing are arranged between the first backup gas radial bearing and the second main gas radial bearing.

[0023] In this way, the supporting stability of the bearing assembly to the main shaft is further improved.

[0024] In some optional embodiments, the air suspension compressor also includes: a control unit, configured to control the conduction of the first main intake and exhaust pipeline to rotate the main bearing assembly, obtain the pressure difference between the high-pressure intake pipe and the low-pressure exhaust pipe, and when the pressure difference is greater than or equal to the first pressure threshold, control the conduction of the first backup intake and exhaust pipeline to rotate the backup bearing assembly.

[0025] Through the pressure difference between the high-pressure intake pipe and the low-pressure exhaust pipe, it is judged whether the main bearing assembly currently in operation is blocked, so as to start the spare bearing assembly in time and improve the operating stability of the compressor.

[0026] In some optional embodiments, the control unit is further configured to control the second main intake and exhaust pipeline to be open to flush the main bearing assembly.

[0027] When the spare bearing assembly is running stably, flush the clogged main bearing assembly in time.

[0028] In some optional embodiments, the control unit is further configured to obtain a pressure difference between a high-pressure intake pipe and a low-pressure exhaust pipe when the spare bearing assembly rotates, and when the pressure difference is greater than or equal to a first pressure threshold, control the first main intake and exhaust pipeline to be turned on to rotate the main bearing assembly, and control the second spare intake and exhaust pipeline to be turned on to flush the spare bearing assembly.

[0029] Similarly, the pressure difference between the high-pressure intake pipe and the low-pressure exhaust pipe can be used to determine whether the currently running spare bearing assembly is blocked, so that the main bearing assembly can be started in time to improve the operating stability of the compressor. After the main bearing assembly is running stably, the blocked spare bearing assembly can be flushed online.

[0030] The disclosed embodiment also provides an air conditioning system, including the air suspension compressor as described above.

[0031] The air suspension compressor and air conditioning system provided by the embodiments of the present disclosure can achieve the following technical effects:

[0032] The air suspension compressor provided by the embodiment of the present disclosure includes a casing, a main shaft is arranged in the casing, and a high-pressure air inlet pipe and a low-pressure exhaust pipe for supplying air to the gas bearing are also arranged. The air suspension compressor also includes a main bearing assembly and a spare bearing assembly as a spare bearing. The main bearing air supply pipeline is used for air intake and exhaust and flushing of the main bearing assembly, and the first main air intake and exhaust pipeline and the second main air intake and exhaust pipeline of the main bearing air supply pipeline are both connected to the high-pressure air inlet pipe and the low-pressure exhaust pipe. The spare bearing air supply pipeline is used for air intake and exhaust and flushing of the spare bearing assembly, and the first spare air intake and exhaust pipeline and the second spare air intake and exhaust pipeline of the spare bearing air supply pipeline are both connected to the high-pressure air inlet pipe and the low-pressure exhaust pipe.

[0033] When the air suspension compressor is supported by the main bearing assembly, the first main inlet and exhaust pipeline can supply and exhaust air to the main bearing assembly. When the main bearing assembly is blocked, the spare bearing assembly can be started to support and rotate, and the blocked main bearing assembly can be flushed by the second main inlet and exhaust pipeline.

[0034] When the air suspension compressor uses a spare bearing assembly to support rotation, the first spare air intake and exhaust pipeline can supply air and exhaust air to the spare bearing assembly. When the spare bearing assembly is blocked, the main bearing assembly can be started to support rotation, and the blocked spare bearing assembly can be flushed using the second spare air intake and exhaust pipeline.

[0035] It can be seen that the air suspension compressor provided in the embodiment of the present disclosure includes two sets of bearing assemblies, namely, a main bearing assembly and a spare bearing assembly. When the main bearing assembly is blocked, the spare bearing assembly can be started to support the rotation, and at the same time, the main bearing assembly can be flushed online, thereby improving the operating reliability of the air suspension compressor and facilitating the maintenance of the air suspension compressor.

[0036] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0038] Figure 1 is a schematic structural diagram of an air suspension compressor provided by an embodiment of the present disclosure;

[0039] Figure 2 is a schematic structural diagram of another air suspension compressor provided by an embodiment of the present disclosure;

[0040] Figure 3 is a schematic structural diagram of another air suspension compressor provided by an embodiment of the present disclosure;

[0041] Figure 4 is a schematic structural diagram of another air suspension compressor provided by an embodiment of the present disclosure;

[0042] Figure 5 is a schematic structural diagram of another air suspension compressor provided by an embodiment of the present disclosure;

[0043] Figure 6 It is a schematic structural diagram of another air suspension compressor provided in an embodiment of the present disclosure.

[0044] Reference numerals:

[0045] 1: housing; 2: spindle;

[0046] 3: first-stage impeller; 4: first-stage air inlet; 5: first-stage volute; 6: first- and second-stage flow passages; 7: second-stage air inlet; 8: second-stage impeller; 9: second-stage volute; 10: air outlet;

[0047] 11: labyrinth seal; 12: labyrinth seal;

[0048] 13: Motor stator; 14: Motor rotor;

[0049] 15: first main gas radial bearing; 16: first backup gas radial bearing; 17: second main gas radial bearing; 18: second backup gas radial bearing; 19: backup gas thrust bearing; 20: main gas thrust bearing;

[0050] 21: first main branch pipeline; 22: first backup branch pipeline; 23: second main branch pipeline; 24: second backup branch pipeline; 25: third main branch pipeline; 26: third backup branch pipeline;

[0051] 27: the fourth main branch pipeline; 28: the fourth backup branch pipeline; 29: the fifth main branch pipeline; 30: the fifth backup branch pipeline;

[0052] 31: Motor cooling liquid inlet pipe; 32: Motor cooling liquid discharge pipe;

[0053] 33: first valve; 34: second valve; 35: third valve; 36: fourth valve; 37: fifth valve; 38: sixth valve; 39: seventh valve; 40: eighth valve;

[0054] 41: high pressure intake pipe; 42: low pressure exhaust pipe;

[0055] 43: sixth main branch pipeline; 44: sixth standby branch pipeline;

[0056] 51: main air intake line; 52: main exhaust line; 53: first main flushing line; 54: second main flushing line; 55: spare air intake line; 56: spare exhaust line; 57: first spare flushing line; 58: second spare flushing line. DETAILED DESCRIPTION

[0057] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0058] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0059] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0060] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0061] Unless otherwise stated, the term "plurality" means two or more.

[0062] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0063] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0064] The present disclosure provides an air suspension compressor. Figures 1 to 6 shown.

[0065] The air suspension compressor provided by the embodiment of the present disclosure includes a casing 1, a main shaft 2 arranged in the casing 1, a high-pressure air inlet pipe 41 for supplying air to the gas bearing and a low-pressure exhaust pipe 42 for exhausting the gas bearing, and also includes a main bearing assembly, a main bearing air supply pipeline, a spare bearing assembly, and a spare bearing air supply pipeline. The main bearing assembly includes a main gas radial bearing group and a main gas thrust bearing 20; the main bearing air supply pipeline is used for air intake and exhaust and flushing of the main bearing assembly, and the main bearing air supply pipeline includes a first main air intake and exhaust pipeline and a second main air intake and exhaust pipeline connected to the main bearing assembly, and the first main air intake and exhaust pipeline is connected to the high-pressure air intake pipe 41 and the low-pressure exhaust pipe 42, and the second main air intake and exhaust pipeline is connected to the high-pressure air intake pipe 41 and the low-pressure exhaust pipe 42; the spare bearing assembly includes a spare gas radial bearing group and a spare gas thrust bearing 19; the spare bearing air supply pipeline is used for air intake and exhaust and flushing of the spare bearing assembly, and the spare bearing air supply pipeline includes a first spare air intake and exhaust pipeline and a second spare air intake and exhaust pipeline connected to the spare bearing assembly, and the first spare air intake and exhaust pipeline is connected to the high-pressure air intake pipe 41 and the low-pressure exhaust pipe 42, and the second spare air intake and exhaust pipeline is connected to the high-pressure air intake pipe 41 and the low-pressure exhaust pipe 42.

[0066] The air suspension compressor provided in the embodiment of the present disclosure is provided with a main bearing assembly and a spare bearing assembly. The first main inlet and exhaust pipeline is used to supply and exhaust air to the main bearing assembly, and the second main inlet and exhaust pipeline is used to flush the main bearing assembly. The first spare inlet and exhaust pipeline is used to supply and exhaust air to the spare bearing assembly, and the second spare inlet and exhaust pipeline is used to flush the spare bearing assembly.

[0067] The air suspension compressor can be supported by the main bearing assembly or the spare bearing assembly. For example, when the main bearing assembly is supported, the spare bearing assembly can be started to rotate when the main bearing assembly is blocked. When the spare bearing assembly rotates stably, the main bearing assembly can be flushed online. In this way, the operating reliability of the air suspension compressor is improved and the maintenance of the air suspension compressor is convenient.

[0068] Optionally, the bearings in the main gas radial bearing group in the main bearing assembly are gas hydrostatic radial bearings, and the main gas thrust bearing 20 is a gas hydrostatic thrust bearing; similarly, the bearings in the backup gas radial bearing group in the backup bearing assembly are gas hydrostatic radial bearings, and the backup gas thrust bearing 19 is a gas hydrostatic thrust bearing.

[0069] Optionally, the gas static pressure radial bearing or the gas static pressure thrust bearing uses a microscopic porous material as a bearing bush. Optionally, the working medium flowing in the main bearing air supply pipeline and the spare bearing air supply pipeline can be a refrigerant.

[0070] The main shaft 2 is arranged in the casing 1, and the main shaft 2 can rotate freely around the axis. The primary impeller 3 and the secondary impeller 8 are fixed on the main shaft 2, and can rotate freely with the main shaft 2. The primary air inlet 4, the blade flow channel of the primary impeller 3, the primary volute 5, the primary and secondary flow channels 6, the secondary air inlet 7, the blade flow channel of the secondary impeller 8, the secondary volute 9, and the air outlet 10 constitute the compressor flow channel.

[0071] The gas enters the flow channel of the first-stage impeller 3 through the first-stage air inlet 4, and the first-stage impeller 3 rotates to do work on the gas to achieve the first-stage supercharging. The gas passes through the first-stage volute 5 and the first and second-stage flow channels 6 to the second-stage air inlet 7, and the second-stage impeller 8 rotates to do work on the gas to achieve the second-stage supercharging. The gas is discharged through the second-stage volute 9 and the air outlet 10.

[0072] Two labyrinth seals 11 seal the inlet of the first-stage impeller 3 and the second-stage impeller 8 to prevent the compressed gas from flowing back through them. Eight labyrinth seals 12 isolate the impeller from the bearing, the bearing from the bearing, and the bearing from the motor to prevent gas blowby.

[0073] The motor stator 13 is fixed on the housing 1 , and the motor rotor is fixed on the main shaft 2 , so that the motor drives the main shaft 2 to rotate.

[0074] Optionally, the first main intake and exhaust pipeline includes a first main connecting pipeline, a main intake pipeline 51 and a main exhaust pipeline 52. The first main connecting pipeline is directly connected to the main bearing assembly, the main intake pipeline 51 connects the first main connecting pipeline with the high-pressure intake pipe 41, and the main exhaust pipeline 52 connects the first main connecting pipeline with the low-pressure exhaust pipe 42.

[0075] In the disclosed embodiment, the high-pressure gas entering the high-pressure intake pipe 41 enters the first main connecting pipe through the main intake pipe 51 to supply air to the main bearing assembly; the gas exhausted from the main bearing assembly flows into the main exhaust pipe 52 through the first main connecting pipe, and finally flows into the low-pressure exhaust pipe 42 for exhaust, thereby realizing the air supply and exhaust of the main bearing assembly in operation.

[0076] Optionally, the second main intake and exhaust pipeline includes a second main connecting pipeline, a first main flushing pipeline 53 and a second main flushing pipeline 54. The second main connecting pipeline is directly connected to the main bearing assembly, the first main flushing pipeline 53 connects the second main connecting pipeline with the high-pressure intake pipe 41, and the second main flushing pipeline 54 connects the second main connecting pipeline with the low-pressure exhaust pipe 42.

[0077] In the disclosed embodiment, the high-pressure gas entering the high-pressure intake pipe 41 enters the second main connecting pipe through the first main flushing pipe 53 to supply air to the main bearing assembly for flushing; the gas discharged after flushing the main bearing assembly flows into the second main flushing pipe 54 through the second main connecting pipe, and finally flows into the low-pressure exhaust pipe 42 for discharge, thereby realizing online flushing of the blocked main bearing assembly.

[0078] Optionally, the first backup intake and exhaust pipeline includes a first backup connecting pipeline, a backup intake pipeline 55 and a backup exhaust pipeline 56. The first backup connecting pipeline is directly connected to the backup bearing assembly, the backup intake pipeline 55 connects the first backup connecting pipeline with the high-pressure intake pipe 41, and the backup exhaust pipeline 56 connects the first backup connecting pipeline with the low-pressure exhaust pipe 42.

[0079] In the disclosed embodiment, the high-pressure gas entering the high-pressure intake pipe 41 enters the first spare connecting pipe through the spare intake pipe 55 to supply air to the spare bearing assembly; the gas exhausted from the spare bearing assembly flows into the spare exhaust pipe 56 through the first spare connecting pipe, and finally flows into the low-pressure exhaust pipe 42 for exhaust, thereby realizing the air supply and exhaust of the spare bearing assembly in operation.

[0080] Optionally, the second standby intake and exhaust pipeline includes a second standby connecting pipeline, a first standby flushing pipeline 57 and a second standby flushing pipeline 58. The second standby connecting pipeline is directly connected to the standby bearing assembly, the first standby flushing pipeline 57 connects the second standby connecting pipeline with the high-pressure intake pipe 41, and the second standby flushing pipeline 58 connects the second standby connecting pipeline with the low-pressure exhaust pipe 42.

[0081] In the disclosed embodiment, the high-pressure gas entering the high-pressure intake pipe 41 enters the second spare connecting pipe through the first spare flushing pipe 57 to supply air to the spare bearing assembly for flushing; the gas discharged after flushing the spare bearing assembly flows into the second spare flushing pipe 58 through the second spare connecting pipe, and finally flows into the low-pressure exhaust pipe 42 for discharge, thereby realizing online flushing of the blocked spare bearing assembly.

[0082] Optionally, the main intake pipeline 51 is provided with a first valve 33, and the main exhaust pipeline 52 is provided with a second valve 34; the first main flushing pipeline 53 is provided with a third valve 35, and the second main flushing pipeline 54 is provided with a fourth valve 36; the spare intake pipeline 55 is provided with a fifth valve 37, and the spare exhaust pipeline 56 is provided with a sixth valve 38; the first spare flushing pipeline 57 is provided with a seventh valve 39, and the second spare flushing pipeline 58 is provided with an eighth valve 40.

[0083] When the operation of the main bearing assembly needs to be controlled, the first valve 33 and the second valve 34 can be controlled to be opened; when the main bearing assembly needs to be flushed, the third valve 35 and the fourth valve 36 can be controlled to be opened; when the operation of the spare bearing assembly needs to be controlled, the fifth valve 37 and the sixth valve 38 can be controlled to be opened; when the spare bearing assembly needs to be flushed, the seventh valve 39 and the eighth valve 40 can be controlled to be opened. It can be seen that the operation or flushing of different bearing assemblies can be achieved by controlling the opening or closing of multiple valves.

[0084] Optionally, the main gas radial bearing group includes a first main gas radial bearing 15 and a second main gas radial bearing 17, wherein the first main connecting pipeline includes a first main converging pipeline, a first main branch pipeline 21 connected to the first main gas radial bearing 15, a second main branch pipeline 23 connected to the second main gas radial bearing 17, and a third main branch pipeline 25 connected to the main gas thrust bearing 20. The second main connecting pipeline includes a second main converging pipeline, a fourth main branch pipeline 27 connected to the first main gas radial bearing 15, a fifth main branch pipeline 29 connected to the second main gas radial bearing 17, and a sixth main branch pipeline 43 connected to the main gas thrust bearing 20.

[0085] The main gas radial bearing assembly includes two radial bearings, namely, the first main gas radial bearing 15 and the second main gas radial bearing 17. The first main connecting pipeline supplies or exhausts gas to each gas bearing in the main bearing assembly in the form of converging and diverting. Similarly, the second main connecting pipeline also supplies or exhausts gas to each gas bearing in the main bearing assembly in the form of converging and diverting. This realizes the operation or flushing of the main bearing assembly.

[0086] The backup gas radial bearing group includes a first backup gas radial bearing 16 and a second backup gas radial bearing 18, wherein the first backup connecting pipeline includes a first backup confluence pipeline, a first backup branch pipeline 22 connected to the first backup gas radial bearing 16, a second backup branch pipeline 24 connected to the second backup gas radial bearing 18, and a third backup branch pipeline 26 connected to the backup gas thrust bearing 19. The second backup connecting pipeline includes a second backup confluence pipeline, a fourth backup branch pipeline 28 connected to the first backup gas radial bearing 16, a fifth backup branch pipeline 30 connected to the second backup gas radial bearing 18, and a sixth backup branch pipeline 44 connected to the backup gas thrust bearing 19.

[0087] The spare gas radial bearing assembly includes two radial bearings, namely, a first spare gas radial bearing 16 and a second spare gas radial bearing 18. The first spare connecting pipeline supplies or exhausts gas to each gas bearing in the spare bearing assembly in the form of converging and diverting. Similarly, the second spare connecting pipeline also supplies or exhausts gas to each gas bearing in the spare bearing assembly in the form of converging and diverting. This realizes the operation or flushing of the spare bearing assembly.

[0088] Optionally, the main shaft 2 includes a first support area near the first end and a second support area near the second end, wherein the first main gas radial bearing 15 and the first backup gas radial bearing 16 are arranged in the first support area, and the second main gas radial bearing 17 and the second backup gas radial bearing 18 are arranged in the second support area. Figure 1 shown.

[0089] The main shaft 2 includes a first end and a second end. The first support area of ​​the main shaft 2 is an area close to the first end, and the second support area is an area close to the second end. The first main gas radial bearing 15 and the first backup gas radial bearing 16 are arranged in the first support area, and the second main gas radial bearing 17 and the second backup gas radial bearing 18 are arranged in the second support area. It can be seen that the first main gas radial bearing 15 and the second main gas radial bearing 17 are respectively arranged in the first support area and the second support area of ​​the main shaft 2, and similarly, the first backup gas radial bearing 16 and the second backup gas radial bearing 18 are respectively arranged in the first support area and the second support area of ​​the main shaft 2. In this way, both the main bearing assembly and the backup bearing assembly can achieve balanced support for the main shaft 2.

[0090] Optionally, from the first end to the second end of the main shaft 2, the first main gas radial bearing 15, the first backup gas radial bearing 16, the second main gas radial bearing 17 and the second backup gas radial bearing 18 are arranged in sequence, and the main gas thrust bearing 20 and the backup gas thrust bearing 19 are arranged between the first backup gas radial bearing 16 and the second main gas radial bearing 17. Figure 1shown.

[0091] In the disclosed embodiment, the main gas thrust bearing 20 and the backup gas thrust bearing 19 are arranged between the first backup gas radial bearing 16 and the second main gas radial bearing 17. In this way, the support stability of the bearing assembly to the main shaft 2 is further improved.

[0092] Optionally, the air suspension compressor provided in the embodiment of the present disclosure further includes a control unit.

[0093] The control unit is configured to control the conduction of the first main intake and exhaust pipeline to rotate the main bearing assembly, obtain the pressure difference between the high-pressure intake pipe 41 and the low-pressure exhaust pipe 42, and when the pressure difference is greater than or equal to the first pressure threshold, control the conduction of the first backup intake and exhaust pipeline to rotate the backup bearing assembly.

[0094] When the main bearing assembly is needed for support, the first valve 33 and the second valve 34 are controlled to be opened, and the third valve 35, the fourth valve 36, the fifth valve 37, the sixth valve 38, the seventh valve 39 and the eighth valve 40 are controlled to be closed, and only the first main intake and exhaust pipeline is conducted to rotate the main bearing assembly. The pressure difference between the high-pressure intake pipe 41 and the low-pressure exhaust pipe 42 is obtained. When the pressure difference is greater than or equal to the first pressure threshold, it is considered that the main bearing assembly currently in operation is blocked. At this time, the first valve 33, the second valve 34, the fifth valve 37 and the sixth valve 38 are controlled to be opened, and the third valve 35, the fourth valve 36, the seventh valve 39 and the eighth valve 40 are closed, so that the main bearing assembly and the spare bearing assembly can run at the same time. When the spare bearing assembly runs stably, the first valve 33, the second valve 34, the third valve 35, the fourth valve 36, the seventh valve 39 and the eighth valve 40 are controlled to be closed, and the fifth valve 37 and the sixth valve 38 are opened. At this time, the main bearing assembly stops working and the spare bearing assembly continues to work.

[0095] Optionally, the control unit is further configured to control the second main intake and exhaust pipeline to be connected to flush the main bearing assembly.

[0096] After the spare bearing assembly continues to work, due to the blockage of the main bearing assembly, at this time, the third valve 35, the fourth valve 36, the fifth valve 37 and the sixth valve 38 can be controlled to open, and the first valve 33, the second valve 34, the seventh valve 39 and the eighth valve 40 can be controlled to close, and the second main intake and exhaust pipeline can be opened, that is, while the spare bearing assembly is running, the main bearing assembly can be flushed online.

[0097] Optionally, the control unit is also configured to obtain the pressure difference between the high-pressure intake pipe 41 and the low-pressure exhaust pipe 42 when the spare bearing assembly rotates, and when the pressure difference is greater than or equal to a first pressure threshold, control the first main intake and exhaust pipeline to be turned on to rotate the main bearing assembly, and control the second spare intake and exhaust pipeline to be turned on to flush the spare bearing assembly.

[0098] After the backup bearing assembly has been working for a certain period of time, the pressure difference between the high-pressure intake pipe 41 and the low-pressure exhaust pipe 42 is obtained. When the pressure difference is greater than or equal to the first pressure threshold, it is considered that the currently running backup bearing assembly is blocked. At this time, the first valve 33, the second valve 34, the fifth valve 37 and the sixth valve 38 are controlled to be opened, and the third valve 35, the fourth valve 36, the seventh valve 39 and the eighth valve 40 are closed, so that the main bearing assembly and the backup bearing assembly can operate at the same time. When the main bearing assembly operates stably, the third valve 35, the fourth valve 36, the fifth valve 37, the sixth valve 38, the seventh valve 39 and the eighth valve 40 are controlled to be closed, and the first valve 33 and the second valve 34 are opened. At this time, the backup bearing assembly stops working and the main bearing assembly continues to work.

[0099] After the main bearing assembly continues to work, due to the blockage of the spare bearing assembly, the first valve 33, the second valve 34, the seventh valve 39 and the eighth valve 40 can be controlled to open, and the third valve 35, the fourth valve 36, the fifth valve 37 and the sixth valve 38 can be controlled to close, and the second spare inlet and exhaust pipeline can be opened, that is, while the main bearing assembly is running, the spare bearing assembly can be flushed online. In this way, the reliability of the air suspension compressor is improved and the maintenance of the air suspension compressor is convenient.

[0100] The disclosed embodiment also provides an air conditioning system including the aforementioned air suspension compressor.

[0101] Optionally, the air conditioning system here includes chillers, heat pump units and other equipment.

[0102] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An air suspension compressor, characterized in that: The invention comprises a housing, a main shaft arranged in the housing, a high-pressure air inlet pipe for supplying air to the gas bearing and a low-pressure exhaust pipe for exhausting the gas bearing, and also comprises: a main bearing assembly, including a main gas radial bearing set and a main gas thrust bearing; A main bearing air supply pipeline is used for air intake, exhaust and flushing of the main bearing assembly. The main bearing air supply pipeline includes a first main air intake and exhaust pipeline and a second main air intake and exhaust pipeline connected to the main bearing assembly. The first main air intake and exhaust pipeline is connected to the high-pressure air intake pipe and the low-pressure exhaust pipe, and the second main air intake and exhaust pipeline is connected to the high-pressure air intake pipe and the low-pressure exhaust pipe. A spare bearing assembly, including a spare gas radial bearing set and a spare gas thrust bearing; The spare bearing air supply pipeline is used for air intake, exhaust and flushing of the spare bearing assembly. The spare bearing air supply pipeline includes a first spare air intake and exhaust pipeline and a second spare air intake and exhaust pipeline connected to the spare bearing assembly. The first spare air intake and exhaust pipeline is connected to the high-pressure air intake pipe and the low-pressure exhaust pipe, and the second spare air intake and exhaust pipeline is connected to the high-pressure air intake pipe and the low-pressure exhaust pipe.

2. The air suspension compressor according to claim 1, characterized in that: The first main intake and exhaust pipeline includes a first main connecting pipeline directly connected to the main bearing assembly, a main intake pipeline connecting the first main connecting pipeline and the high-pressure intake pipe, and a main exhaust pipeline connecting the first main connecting pipeline and the low-pressure exhaust pipe; The second main intake and exhaust pipeline includes a second main connecting pipeline directly connected to the main bearing assembly, a first main flushing pipeline connecting the second main connecting pipeline and the high-pressure intake pipe, and a second main flushing pipeline connecting the second main connecting pipeline and the low-pressure exhaust pipe; The first spare intake and exhaust pipeline includes a first spare connecting pipeline directly connected to the spare bearing assembly, a spare intake pipeline connected to the first spare connecting pipeline and the high-pressure intake pipe, and a spare exhaust pipeline connected to the first spare connecting pipeline and the low-pressure exhaust pipe; The second backup intake and exhaust pipeline includes a second backup connecting pipeline directly connected to the backup bearing assembly, a first backup flushing pipeline connecting the second backup connecting pipeline and the high-pressure intake pipe, and a second backup flushing pipeline connecting the second backup connecting pipeline and the low-pressure exhaust pipe.

3. The air suspension compressor according to claim 2, characterized in that: The main air intake pipeline is provided with a first valve, and the main exhaust pipeline is provided with a second valve; The first main flushing pipeline is provided with a third valve, and the second main flushing pipeline is provided with a fourth valve; The standby air intake line is provided with a fifth valve, and the standby air exhaust line is provided with a sixth valve; The first standby flushing pipeline is provided with a seventh valve, and the second standby flushing pipeline is provided with an eighth valve.

4. The air suspension compressor according to claim 2, characterized in that: The main gas radial bearing group includes a first main gas radial bearing and a second main gas radial bearing, wherein the first main connecting pipeline includes a first main converging pipeline, a first main branch pipeline connected to the first main gas radial bearing, a second main branch pipeline connected to the second main gas radial bearing, and a third main branch pipeline connected to the main gas thrust bearing; the second main connecting pipeline includes a second main converging pipeline, a fourth main branch pipeline connected to the first main gas radial bearing, a fifth main branch pipeline connected to the second main gas radial bearing, and a sixth main branch pipeline connected to the main gas thrust bearing; The backup gas radial bearing group includes a first backup gas radial bearing and a second backup gas radial bearing, wherein the first backup connecting pipeline includes a first backup confluence pipeline, a first backup branch pipeline connected to the first backup gas radial bearing, a second backup branch pipeline connected to the second backup gas radial bearing, and a third backup branch pipeline connected to the backup gas thrust bearing; the second backup connecting pipeline includes a second backup confluence pipeline, a fourth backup branch pipeline connected to the first backup gas radial bearing, a fifth backup branch pipeline connected to the second backup gas radial bearing, and a sixth backup branch pipeline connected to the backup gas thrust bearing.

5. The air suspension compressor according to claim 4, characterized in that: The main shaft includes a first support area near the first end and a second support area near the second end, Among them, the first main gas radial bearing and the first backup gas radial bearing are arranged in the first supporting area, and the second main gas radial bearing and the second backup gas radial bearing are arranged in the second supporting area.

6. The air suspension compressor according to claim 5, characterized in that: From the first end to the second end of the main shaft, a first main gas radial bearing, a first backup gas radial bearing, a second main gas radial bearing and a second backup gas radial bearing are arranged in sequence. Furthermore, the main gas thrust bearing and the backup gas thrust bearing are arranged between the first backup gas radial bearing and the second main gas radial bearing.

7. The air suspension compressor according to any one of claims 1 to 6, characterized in that: Also includes: The control unit is configured to control the conduction of the first main intake and exhaust pipeline to rotate the main bearing assembly, obtain the pressure difference between the high-pressure intake pipe and the low-pressure exhaust pipe, and when the pressure difference is greater than or equal to the first pressure threshold, control the conduction of the first backup intake and exhaust pipeline to rotate the backup bearing assembly.

8. The air suspension compressor according to claim 7, characterized in that: The control unit is also configured to control the second main intake and exhaust pipeline to be connected to flush the main bearing assembly.

9. The air suspension compressor according to claim 8, characterized in that: The control unit is also configured to obtain the pressure difference between the high-pressure intake pipe and the low-pressure exhaust pipe when the spare bearing assembly rotates, and when the pressure difference is greater than or equal to a first pressure threshold, control the first main intake and exhaust pipeline to be turned on to rotate the main bearing assembly, and control the second spare intake and exhaust pipeline to be turned on to flush the spare bearing assembly.

10. An air conditioning system, characterized in that: Comprising the air suspension compressor according to any one of claims 1 to 9.

Images