CN211398059U - Compressor and refrigerating system - Google Patents
Compressor and refrigerating system Download PDFInfo
- Publication number
- CN211398059U CN211398059U CN202020041927.0U CN202020041927U CN211398059U CN 211398059 U CN211398059 U CN 211398059U CN 202020041927 U CN202020041927 U CN 202020041927U CN 211398059 U CN211398059 U CN 211398059U
- Authority
- CN
- China
- Prior art keywords
- bearing
- liquid
- cavity
- compressor
- cooling fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 239000007788 liquid Substances 0.000 claims abstract description 261
- 239000012809 cooling fluid Substances 0.000 claims abstract description 113
- 239000000725 suspension Substances 0.000 claims abstract description 41
- 238000004891 communication Methods 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims abstract description 10
- 238000005057 refrigeration Methods 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims description 90
- 239000003507 refrigerant Substances 0.000 claims description 76
- 238000007789 sealing Methods 0.000 claims description 23
- 238000009434 installation Methods 0.000 claims description 9
- 238000005192 partition Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 15
- 230000008901 benefit Effects 0.000 description 13
- 238000001816 cooling Methods 0.000 description 12
- 239000000110 cooling liquid Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 241000521257 Hydrops Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present disclosure provides a compressor and a refrigeration system. The compressor includes: a cylinder including a mounting cavity; the stator is fixedly arranged in the mounting cavity and comprises a rotor mounting hole; the rotor is rotatably arranged in the rotor mounting hole; the air suspension thrust bearing is used for bearing the axial force of the rotor; the separation structure is fixedly arranged in the mounting cavity, the mounting cavity is separated into a motor cavity for mounting the stator and a bearing cavity for mounting the air suspension thrust bearing, and the separation structure and/or the bottom of the cylinder body are/is provided with a communication structure for communicating the motor cavity with the bearing cavity; and the bearing cavity liquid level adjusting device comprises a cooling fluid bypass structure which is communicated with the outside of the compressor and a sensing device which is coupled with the cooling fluid bypass structure, wherein the sensing device is used for detecting the state information of the cooling fluid in the bearing cavity and controlling the cooling fluid bypass structure to be opened or closed according to the state information. The technical scheme disclosed facilitates ensuring the operational reliability of the compressor.
Description
Technical Field
The disclosure relates to the technical field of compressors, in particular to a compressor and a refrigerating system.
Background
In a high-speed type compressor, a rotor of the compressor rotates at a high speed during operation, and a reliable bearing is required to support the rotor. The bearings used by the conventional compressor rotor mainly comprise a rolling bearing, an oil film bearing and a magnetic suspension bearing.
In the related art, there are compressors that use air bearing to support rotation of a rotor. The compressor adopting the gas suspension bearing mainly uses gas to support the rotor, and the working principle is that a gas film is automatically formed between the gas suspension bearing and the rotor to support the rotor in the high-speed rotation process of the rotor.
During the operation of the compressor, the bearing generates heat and needs to be lubricated and cooled. Most bearings in the related art are cooled by using lubricating oil, and the lubricating oil is used for taking away heat generated when a rotor rotates at a high speed relative to the bearings. In the compressor of the prior art, a cooling device for storing cooling liquid is arranged, a cooling liquid inlet is formed in one side of the cooling device, a cooling liquid outlet is formed in the other side of the cooling device, and sufficient liquid is stored in a liquid storage cavity of the cooling device by inputting the cooling liquid with a certain flow, so that sufficient lubrication is ensured to exist in the operation of a bearing, and the reliable operation of the compressor is further ensured.
In the related art refrigeration compressor, the air-suspension radial bearing and the motor are disposed in the same space (motor cavity), and the liquid refrigerant passes through the motor cooling flow channel to absorb heat of the stator to change into a gaseous state. And then the gaseous refrigerant is discharged from the front end of the motor cavity and returns to the rear end of the motor cavity through a gap between the stator and the rotor to cool the surface of the rotor, meanwhile, the gaseous refrigerant can supply air for the gas suspension radial bearing, and the gas suspension radial bearing can conveniently utilize the cooled gas of the motor as a gas source and a cooling source of the gas bearing. The space of the air suspension thrust bearing of the compressor adopting the air suspension bearing is separately and independently designed from the space of the motor, the air suspension thrust bearing can cause the temperature to rise in a closed bearing cavity, and the pressure in the bearing cavity is sharply increased, so that the performance of the air suspension thrust bearing is influenced. In addition, if the quantity of the refrigerant as the cooling fluid is too small, the cooling of the motor is insufficient, and if the quantity of the refrigerant is too large, the liquid refrigerant at the bottom of the motor cavity is too much. Along with the increase of the amount of the refrigerant, the gas suspension bearing is immersed by the liquid refrigerant, and gas cannot form a gas film, so that the rotor and the gas suspension bearing are collided and rubbed.
SUMMERY OF THE UTILITY MODEL
A first aspect of the present disclosure provides a compressor, including:
a cylinder including a mounting cavity;
the stator is fixedly arranged in the mounting cavity and comprises a rotor mounting hole;
the rotor is rotatably arranged in the rotor mounting hole;
the air suspension thrust bearing is used for bearing the axial force of the rotor;
the separation structure is fixedly arranged in the installation cavity and divides the installation cavity into a motor cavity for installing the stator and a bearing cavity for installing the air suspension thrust bearing, and a communication structure which is communicated with the motor cavity and the bearing cavity so as to introduce liquid cooling fluid at the bottom of the motor cavity into the bearing cavity is arranged at the bottom of the separation structure and/or the barrel; and
the bearing cavity liquid level adjusting device comprises a cooling fluid bypass structure which is communicated with the outside of the compressor, and a sensing device which is coupled with the cooling fluid bypass structure, wherein the sensing device is used for detecting state information of cooling fluid in the bearing cavity and controlling the cooling fluid bypass structure to be opened or closed according to the state information.
In some embodiments of the present invention, the,
the cooling fluid bypass structure comprises a gaseous fluid bypass structure in communication with an upper portion of the bearing cavity;
the sensing device comprises a liquid level sensor coupled with the gaseous fluid bypass structure, and the liquid level sensor is used for detecting liquid level information of liquid cooling fluid in the bearing cavity and controlling the gaseous fluid bypass structure to be opened or closed according to the liquid level information.
In some embodiments, the gaseous fluid bypass structure and the level sensor are configured to: the liquid level sensor detects that open when the liquid level H of cooling fluid in the bearing chamber is less than first preset liquid level H1 gaseous fluid bypass structure, the liquid level sensor detects in the bearing chamber cooling fluid's liquid level H more than or equal to second preset liquid level H2 is closed gaseous fluid bypass structure, wherein, second preset liquid level H2 more than or equal to first preset liquid level H1.
In some embodiments of the present invention, the,
the cooling fluid bypass structure comprises a liquid fluid bypass structure in communication with a lower portion of the bearing cavity;
the sensing device comprises a pressure sensor coupled with the liquid fluid bypass structure, and the pressure sensor is used for detecting pressure information in the bearing cavity and controlling the liquid fluid bypass structure to be opened or closed according to the pressure information.
In some embodiments, the liquid fluid bypass structure and the pressure sensor are configured to: the liquid level sensor detects in the bearing cavity when liquid level H of cooling fluid is more than or equal to second preset liquid level H2, pressure sensor detects pressure P in the bearing cavity is closed when being less than first preset pressure P1 the liquid state fluid bypass structure, pressure sensor detects pressure P in the bearing cavity is more than or equal to second preset pressure P2 the liquid state fluid bypass structure is opened, wherein, second preset pressure P2 is more than or equal to first preset pressure P1.
In some embodiments, the gaseous fluid bypass structure comprises:
the exhaust screw plug comprises an exhaust screw plug body connected with the cylinder in a sealing manner and an exhaust passage arranged on the exhaust screw plug body and used for communicating the bearing cavity with the outside of the compressor, and the pressure sensor is arranged on the exhaust screw plug; and
the exhaust valve is arranged at one end, far away from the bearing cavity, of the exhaust channel and used for controlling whether the exhaust channel is communicated with the outside of the compressor or not, and the liquid level sensor is coupled with the exhaust valve to control whether the exhaust valve is opened or not.
In some embodiments, the liquid fluid bypass structure comprises:
the liquid drainage screw plug comprises a liquid drainage screw plug body in sealing connection with the barrel and a liquid drainage channel which is arranged on the liquid drainage screw plug body and used for communicating the bearing cavity with the outside of the compressor, and the liquid level sensor is arranged on the liquid drainage screw plug; and
and the liquid discharge valve is arranged at one end of the liquid discharge channel, which is far away from the bearing cavity, and is used for controlling whether the liquid discharge channel is communicated with the outside of the compressor or not, and the pressure sensor is coupled with the liquid discharge valve to control whether the liquid discharge valve is opened or not.
In some embodiments, the liquid fluid bypass structure includes a drain plug sealing gasket disposed between the drain plug and the barrel for sealing a gap between the drain plug body and the barrel, and the height of the liquid level sensor relative to the bottom wall of the barrel is adjusted by adjusting the thickness of the drain plug sealing gasket.
In some embodiments, the separation structure comprises:
the bearing support is fixedly arranged in the mounting cavity; and
the air suspension radial bearing is arranged in the bearing support, the rotor is rotatably supported on the air suspension radial bearing, and the communication structure is arranged at the bottom of the bearing support and/or the barrel.
A second aspect of the present disclosure provides a refrigeration system, including a refrigerant circuit including the compressor, where the cooling fluid inlet is communicated with the refrigerant circuit to introduce a refrigerant in the refrigerant circuit into the cylinder as the cooling fluid, and the cooling fluid bypass structure is connected to the refrigerant circuit to bypass the cooling fluid to the refrigerant circuit.
The compressor that provides based on this disclosure includes bearing chamber liquid level adjusting device, cooperation through sensing device and cooling fluid bypass structure, can change the parameter of the cooling fluid in the bearing chamber through bypass cooling fluid, thereby adjust liquid level and pressure of liquid cooling fluid in the bearing chamber, do benefit to and solve bearing chamber refrigerant liquid level high on the left, lead to relevant problems such as bearing immersion fluid, also do benefit to and solve the too big and too high problem of temperature of bearing intracavity pressure that leads to seriously because of cooling fluid gasification, and then do benefit to and guarantee that gas suspension thrust bearing is suitable at pressure, the suitable and suitable environment of cooling fluid liquid level of temperature moves down, do benefit to the operational reliability who guarantees the compressor.
The refrigeration system provided by the disclosure has the corresponding advantages of the compressor provided by the disclosure.
Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the disclosure and together with the description serve to explain the disclosure and not to limit the disclosure. In the drawings:
fig. 1 is a schematic cross-sectional view illustrating a structure of a portion of a compressor according to an embodiment of the present disclosure.
Fig. 2 is a schematic sectional view of another structure of a compressor according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the 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. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present disclosure, it should be understood that the terms "first", "second", etc. are used to define the components, and are used only for convenience of distinguishing the corresponding components, and if not otherwise stated, the terms have no special meaning, and thus, should not be construed as limiting the scope of the present disclosure.
In the description of the present disclosure, it is to be understood that the directional terms are merely used for convenience in describing the present disclosure and for simplicity in description, and in the absence of any indication to the contrary, these directional terms are not intended to indicate and imply that the referenced device or element must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be taken as limiting the scope of the present disclosure; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
As shown in fig. 1 and 2, embodiments of the present disclosure provide a compressor. The compressor comprises a cylinder 15, a stator 16, a rotor 14, a gas suspension thrust bearing 20, a separation structure and a bearing cavity liquid level adjusting device.
The cylinder 15 includes a mounting cavity. The stator 16 is fixedly disposed in the mounting cavity and includes a rotor mounting hole. The rotor 14 is rotatably mounted in the rotor mounting hole. The air-bearing thrust bearing 20 is used to carry the axial forces of the rotor 14. The partition structure divides the mounting cavity into a motor cavity 22 in which the stator 16 is mounted and a bearing cavity 17 in which the air-bearing thrust bearing 20 is mounted. The bottom of the separating structure and/or the barrel 15 is provided with a communicating structure which is communicated with the motor cavity 22 and the bearing cavity 17 so as to lead the liquid cooling fluid at the bottom of the motor cavity 22 to the bearing cavity 17.
The bearing cavity liquid level adjusting device comprises a cooling fluid bypass structure which can be switched on and off with the outside of the compressor and a sensing device which is coupled with the cooling fluid bypass structure. The sensing device is used for detecting the state information of the cooling fluid in the bearing cavity 17 and controlling the cooling fluid bypass structure to be opened or closed according to the state information detected by the sensing device.
The compressor of this disclosure includes bearing chamber liquid level adjusting device, cooperation through sensing device and cooling fluid bypass structure, can change the parameter of the cooling fluid in the bearing chamber 17 through bypass cooling fluid, thereby adjust the liquid level and the pressure of liquid cooling fluid in the bearing chamber, do benefit to and solve bearing chamber 17 refrigerant liquid level on the high side, lead to relevant problems such as bearing immersion fluid, also do benefit to and solve the too big and too high problem of temperature of bearing chamber 17 internal pressure that leads to seriously because of the gasification of cooling fluid, and then do benefit to and guarantee that gas suspension thrust bearing 20 operates under the environment that pressure is suitable, the temperature is suitable and the cooling fluid liquid level is suitable, do benefit to the operational reliability who guarantees the compressor.
As shown in fig. 1 and 2, in the compressor of some embodiments, the partition structure includes a bearing support 13 and an air-suspending radial bearing 25. The bearing support 13 is fixedly arranged in the mounting cavity. An air-bearing radial bearing 25 is disposed in the bearing holder 13, and the rotor 14 is rotatably supported on the air-bearing radial bearing 25. The bearing support 13 and the air bearing 25 divide the installation cavity into a motor cavity 22 for installing the stator 16 and a bearing cavity 17 for installing the air bearing 15. The bottom of the bearing support 13 and/or the barrel 15 is provided with a communication structure which is communicated with the motor cavity 22 and the bearing cavity 17 so as to lead the liquid cooling fluid at the bottom of the motor cavity 22 to the bearing cavity 17.
In the compressor of some embodiments, the cooling fluid bypass structure includes a gaseous fluid bypass structure communicating with an upper portion of the bearing cavity 17; the sensing means comprises a level sensor 32 coupled to the gaseous fluid bypass structure. The liquid level sensor 32 is used for detecting the liquid level information of the liquid cooling fluid in the bearing cavity 17, and controlling the gaseous fluid bypass structure to be opened or closed according to the liquid level information detected by the liquid level sensor 32. I.e. the aforementioned status information of the cooling fluid comprises the level information.
The liquid level sensor provides liquid level information of the liquid cooling fluid in the bearing cavity 17, the gaseous fluid bypass structure is opened or closed according to the liquid level information, the pressure in the bearing cavity 17 can be adjusted, so that the pressure difference between the motor cavity 22 and the bearing cavity 17 is changed, and the amount of the liquid cooling fluid entering the bearing cavity 17 can be adjusted under the action of the pressure difference, so that the liquid level of the liquid cooling fluid is adjusted.
In the compressor of some embodiments, the gaseous fluid bypass structure and level sensor 32 may be configured to: opening the gaseous fluid bypass arrangement when the level sensor 32 detects that the level H of the cooling fluid in the bearing cavity 17 is below a first preset level H1; the level sensor 32 detects that the level H of the cooling fluid in the bearing cavity 17 is equal to or greater than a second predetermined level H2 and closes the gaseous fluid bypass arrangement. The second preset level H2 is equal to or greater than the first preset level H1.
Because the pressure in the bearing cavity 17 can be reduced by opening the gaseous fluid bypass structure, under the action of the pressure difference between the motor cavity 22 and the bearing cavity 17, the liquid cooling fluid at the bottom of the motor cavity 22 can flow into the bearing cavity 17 through the communicating structure, so that the liquid level H of the liquid cooling fluid in the bearing cavity 17 is favorably improved. When the gaseous fluid bypass structure is closed, the pressure in the bearing cavity 17 and the pressure in the motor cavity 22 will finally reach a balance, so that the liquid cooling fluid in the motor cavity 22 does not flow into the bearing cavity 17 any more, which is beneficial to keeping the liquid level H of the liquid cooling fluid in the bearing cavity 17 stable.
Wherein, when the second preset level H2 is greater than the first preset level H1, the level P of the cooling fluid in the bearing chamber 17 can be controlled substantially within the range of the first preset level H1 and the second preset level H2 by cooperation of the gaseous fluid bypass structure and the level sensor 32. When the second preset level H2 is equal to the first preset level H1, the level P of the cooling fluid in the bearing chamber 17 can be controlled substantially around the level preset value defined by the first preset level H1 and the second preset level H2.
In the compressor of some embodiments, the cooling fluid bypass structure includes a liquid fluid bypass structure communicating with a lower portion of the bearing cavity 17; the sensing device comprises a pressure sensor 31 coupled to the liquid fluid bypass structure, and the pressure sensor 31 is configured to detect pressure information in the bearing cavity 17 and control the liquid fluid bypass structure to open or close according to the pressure information detected by the pressure sensor 31. I.e. the aforementioned status information of the cooling fluid comprises this pressure information.
On the basis of adjusting the liquid level through the gaseous fluid bypass structure, the liquid level of the bearing cavity 17 can be reduced through the liquid fluid bypass structure, so that the liquid level and the pressure of the bearing cavity 17 are favorably reduced, the liquid level of liquid cooling fluid in the bearing cavity 17 is prevented from being too high, the gas suspension thrust bearing 20 is favorably operated in a proper environment, and the gas film is prevented from being influenced by the fact that the gas suspension thrust bearing 20 is immersed below the liquid level of the liquid cooling fluid.
As shown in fig. 1 and 2, in the compressor of some embodiments, the cooling fluid bypass structure includes a gaseous fluid bypass structure communicating with an upper portion of the bearing chamber 17 and a liquid fluid bypass structure communicating with a lower portion of the bearing chamber 17. The sensing means comprises a level sensor 32 coupled to the gaseous fluid bypass arrangement and a pressure sensor 31 coupled to the liquid fluid bypass arrangement. The pressure sensor 31 is used for detecting pressure information in the bearing cavity 17, and the liquid fluid bypass structure is controlled to be opened or closed according to the pressure information detected by the pressure sensor 31. The liquid level sensor 32 is used for detecting the liquid level information of the liquid cooling fluid in the bearing cavity 17, and the gaseous fluid bypass structure is controlled to be opened or closed according to the liquid level information detected by the liquid level sensor 32. I.e. the aforementioned status information of the cooling fluid comprises the level information and the pressure information.
In the compressor of some embodiments, the liquid fluid bypass structure and the pressure sensor 31 are configured to: when the liquid level sensor 32 detects that the liquid level H of the cooling fluid in the bearing cavity 17 is equal to or greater than the second preset liquid level H2, the pressure sensor 31 detects that the pressure P in the bearing cavity 17 is less than the first preset pressure P1, the liquid fluid bypass structure is closed, and when the pressure sensor 31 detects that the pressure P in the bearing cavity 17 is equal to or greater than the second preset pressure P2, the liquid fluid bypass structure is opened. The second preset pressure P2 is greater than or equal to the first preset pressure P1.
The closing condition after opening the liquid fluid bypass structure may be pressure information, for example, the pressure P is less than the first preset pressure P1, or liquid level information, for example, the liquid level H is less than the first preset liquid level H1.
When the pressure P is lower than the first preset pressure P1 as a closing condition after the liquid fluid bypass structure is opened, and when the second preset pressure P2 is higher than the first preset pressure P1, the pressure P of the cooling fluid in the bearing cavity 17 can be substantially controlled within the range of the first preset pressure P1 and the second preset pressure P2 through the cooperation of the liquid fluid bypass structure and the pressure sensor 32. When the second preset pressure P2 is equal to the first preset pressure P1, the pressure P of the cooling fluid in the bearing cavity 17 can be controlled substantially around the preset pressure value defined by the first preset pressure P1 and the second preset pressure P2.
As shown in fig. 1 and 2, in the compressor of some embodiments, the gaseous fluid bypass structure includes the discharge screw 18 and the discharge valve 1. The exhaust screw plug 18 comprises an exhaust screw plug body which is connected with the cylinder 15 in a sealing way and an exhaust channel which is arranged on the exhaust screw plug body and is used for communicating the bearing cavity 17 with the outside of the compressor. The pressure sensor 31 is provided on the exhaust plug screw 18. The exhaust valve 1 is arranged at one end of the exhaust channel far away from the bearing cavity 17 and used for controlling whether the exhaust channel is communicated with the outside of the compressor, and the liquid level sensor 32 is coupled with the exhaust valve 1 to control the exhaust valve 1 to be opened and closed.
The provision of the pressure sensor 31 on the vent plug screw 18 facilitates the integration of the different components of the bearing cavity level adjustment device, thereby facilitating the installation and maintenance of the bearing cavity level adjustment device.
As shown in fig. 1 and 2, the gaseous fluid bypass structure includes an exhaust plug sealing gasket 28, and the exhaust plug sealing gasket 28 is disposed between the exhaust plug 18 and the cylinder 15 for sealing a gap between the exhaust plug body and the cylinder 15, which is beneficial to preventing the cooling fluid from leaking.
As shown in fig. 1 and 2, in the compressor of some embodiments, the liquid fluid bypass structure includes a drain plug 23 and a drain valve 2. The liquid drainage screw plug 23 comprises a liquid drainage screw plug body which is hermetically connected with the barrel 15 and a liquid drainage channel which is arranged on the liquid drainage screw plug body and is used for communicating the bearing cavity 17 with the outside of the compressor. The level sensor 32 is provided on the drain plug 23. The liquid discharge valve 2 is arranged at one end of the liquid discharge channel far away from the bearing cavity 17 and is used for controlling whether the liquid discharge channel is communicated with the outside of the compressor or not. The pressure sensor 31 is coupled to the drain valve 2 to control the opening and closing of the drain valve 2.
The liquid level sensor 32 is arranged on the liquid drainage screw plug 23, so that different parts of the bearing cavity liquid level adjusting device can be integrated conveniently, and the installation and maintenance of the bearing cavity liquid level adjusting device are facilitated.
As shown in fig. 1 and 2, in the compressor of some embodiments, the liquid fluid bypass structure includes a drain plug sealing gasket 29, and the drain plug sealing gasket 29 is disposed between the drain plug 23 and the cylinder 15 for sealing a gap between the drain plug body and the cylinder 15. The height of the level sensor 32 relative to the bottom of the barrel 15 is adjusted by adjusting the thickness of the drain plug seal 29. As the height of the level sensor 32 relative to the bottom of the barrel 15 changes, the control parameter that controls the level of liquid cooling fluid in the bearing cavity 17 changes, and thus the level of liquid cooling fluid in the bearing cavity 17 changes during operation.
The embodiment of the present disclosure further provides a refrigeration system, which includes a refrigerant circuit, where the refrigerant circuit includes the compressor. The cooling fluid inlet of the compressor communicates with the refrigerant circuit to introduce the refrigerant in the refrigerant circuit into the cylinder 15 as a cooling fluid. The cooling fluid bypass structure is connected with the refrigerant loop and is used for bypassing the cooling fluid to the refrigerant loop.
The refrigeration system of the embodiment of the present disclosure has the advantages that the aforementioned compressor of the embodiment of the present disclosure has.
The embodiment of the present disclosure further provides a method for adjusting a liquid level of a bearing cavity of a compressor, including: detecting the state information of the cooling fluid in the bearing cavity 17 by adopting a sensing device; and controlling the cooling fluid bypass structure to be opened or closed according to the state information detected by the sensing device.
Where the cooling fluid bypass structure comprises a gaseous fluid bypass structure in communication with an upper portion of the bearing cavity 17 and the sensing device comprises a level sensor 32 coupled to the gaseous fluid bypass structure, the bearing cavity level adjustment method of some embodiments comprises: the gaseous fluid bypass structure is controlled to open or close based on the level information detected by level sensor 32.
In some embodiments of the bearing cavity fluid level adjustment method, controlling the gaseous fluid bypass structure to open or close based on fluid level information detected by fluid level sensor 32 comprises: opening the gaseous fluid bypass arrangement when the level sensor 32 detects that the level H of the cooling fluid in the bearing cavity 17 is below a first preset level H1; the level sensor 32 detects that the level H of the cooling fluid in the bearing cavity 17 is equal to or greater than a second predetermined level H2 and closes the gaseous fluid bypass arrangement. Wherein the second preset level H2 is greater than or equal to the first preset level H1.
When the cooling fluid bypass structure includes a liquid fluid bypass structure communicating with a lower portion of the bearing cavity 17, and the sensing device includes a pressure sensor 31 coupled to the liquid fluid bypass structure, the bearing cavity liquid level adjustment method of some embodiments includes: the liquid fluid bypass structure is controlled to open or close according to the pressure information detected by the pressure sensor 31.
When the cooling fluid bypass structure includes a gaseous fluid bypass structure and a liquid fluid bypass structure, and the sensing device includes the liquid level sensor 32 and the pressure sensor 31, the bearing cavity liquid level adjusting method of some embodiments includes: controlling the liquid fluid bypass structure to be opened or closed according to the pressure information detected by the pressure sensor 31; the gaseous fluid bypass structure is controlled to open or close based on the level information detected by level sensor 32.
In the bearing cavity fluid level adjustment method of some embodiments, the liquid fluid bypass structure and the pressure sensor 31 are configured to: when the liquid level sensor 32 detects that the liquid level of the cooling fluid in the bearing cavity 17 is greater than or equal to a second preset liquid level H2, the pressure sensor 31 closes the liquid fluid bypass structure when detecting that the pressure in the bearing cavity 17 is less than a first preset pressure P1, and the pressure sensor 31 opens the liquid fluid bypass structure when detecting that the pressure in the bearing cavity 17 is greater than or equal to a second preset pressure P2, wherein the second preset pressure P2 is greater than or equal to the first preset pressure P1.
The method for adjusting the liquid level of the bearing cavity of the compressor disclosed by the embodiment of the disclosure has the advantages of the corresponding compressor disclosed by the embodiment of the disclosure.
The compressor, the refrigeration system and the bearing cavity pressure adjusting method of the compressor of the present disclosure are exemplified below with respect to the structure of the compressor, the compression cavity liquid level adjusting process and the principle of an embodiment. The compressor, the refrigeration system and the method for adjusting the pressure of the bearing cavity of the compressor of other embodiments can be understood by referring to the corresponding contents of the embodiment.
As shown in fig. 1, the compressor of this embodiment includes a cylinder 15, a stator 16, a rotor 14, a diffuser 12, an air-levitated thrust bearing 20 located at the left end of the cylinder 15, a bearing support 13 located at the left end of the cylinder 15, an air-levitated radial bearing 25 located at the left end of the cylinder 15, a bearing support 19 located at the right end of the cylinder 15, an air-levitated radial bearing 26 located at the right end of the cylinder 15, and a bearing chamber liquid level adjusting device.
The bearing support 13 at the left end of the cylinder 15 and the air suspension radial bearing 25 at the left end of the cylinder 15 are used as a separation structure to separate the installation cavity in the cylinder 15 into a motor cavity 22 and a bearing cavity 17. An air bearing 20 is provided at the left end of the rotor 14. An air-bearing thrust bearing 20 is located within the bearing cavity 17. The diffuser 12 is fixedly connected to the left end of the cylinder 15 to close the left end of the bearing chamber 17.
The bearing cavity liquid level adjusting device comprises a cooling fluid bypass structure and a sensing device. The cooling fluid bypass structure includes a gaseous fluid bypass structure and a liquid fluid bypass structure. The sensing means comprise a level sensor 32 and a pressure sensor 31.
The gaseous fluid bypass structure comprises an exhaust plug 18, an exhaust plug sealing gasket 28, an exhaust pipe 3 and an exhaust valve 1. The exhaust screw plug body of the exhaust screw plug 18 is provided with an exhaust passage which is communicated with the bearing cavity 17 and the outside of the compressor. The exhaust pipe 3 is connected to the end of the exhaust channel remote from the bearing chamber 17. The exhaust valve 1 is provided on the exhaust pipe 3. The exhaust valve 1 is an electromagnetic valve.
The liquid fluid bypass structure comprises a drain plug 23, a drain plug sealing gasket 29, a drain pipe 4 and a drain valve 2. The drainage screw plug 18 is provided with a drainage channel on the body thereof for communicating the bearing cavity 17 with the outside of the compressor. The liquid discharge pipe 1 is connected with one end of the liquid discharge channel far away from the bearing cavity 17. The drain valve 2 is provided on the drain pipe 4. The drain valve 2 is an electromagnetic valve.
A pressure sensor 31 is mounted on the vent plug body of the vent plug 18 so as to be mounted on the upper portion of the bearing chamber 17 for detecting the pressure P within the bearing chamber 17, i.e., the pressure of the gaseous cooling fluid. A level sensor 32 is mounted on the drain plug body of the drain plug 18 and thus in the lower part of the bearing chamber 17 for detecting the level H of the liquid cooling fluid in the bearing chamber 17.
The liquid level sensor 32 and the exhaust valve 1 are connected by a first connecting line 33 to realize the coupling of the two. The exhaust valve 1 can be controlled to be switched on or off according to a liquid level signal of the liquid cooling fluid detected by the liquid level sensor 32, so that the gaseous fluid bypass structure is opened or closed. The pressure sensor 31 and the drain valve 2 are connected by a second connection line 34 to achieve coupling therebetween. The on-off of the drain valve 2 can be controlled according to the pressure signal in the bearing cavity 17 detected by the pressure sensor 31, so that the liquid fluid bypass structure is opened or closed.
In this embodiment, the cooling fluid is a refrigerant for cooling, the gaseous cooling fluid is a gaseous refrigerant, and the liquid cooling fluid is a liquid refrigerant.
In this embodiment, the compressor is a centrifugal compressor. The bearing cavity 17 is located at the left end of the barrel 15. The left end of the cylinder 15 is also provided with a diffuser 12, and the pressure protector 12, the cylinder 15, the bearing support 13 and the gas suspension radial bearing 25 jointly enclose a bearing cavity 17. The cylinder 15 is provided with a cooling fluid inlet, a spiral flow passage 27 is formed in the inner wall of the cylinder 15 at a position corresponding to the stator 16, and the spiral flow passage 27 is communicated with the cooling fluid inlet. The refrigerant entering from the cooling fluid inlet enters the first end (left end in fig. 1) of the motor cavity 22 located at the stator 16 through the spiral flow channel 17, and cools the surface of the stator 16 in the process of passing through the spiral flow channel 27, and the refrigerant is also partially gasified to form a gaseous refrigerant. The cooling fluid within the motor cavity 22 at the first end of the stator 16 enters the second end of the motor cavity 22 at the stator 16 (the right end in fig. 1) through the cooling passages inside the stator 22 and the gap between the stator 16 and the rotor 14 under the pressure differential across the stator 16 and the second end. The cooling medium cools the inside of the stator 16 while passing through the cooling passage. The hole wall of the bearing mounting hole of the stator 16 and the rotor 14 are cooled in the process of the cooling fluid passing through the gap between the stator 16 and the rotor 14. When the compressor is in an operating state, the refrigerant is a gaseous refrigerant at the upper part of the motor cavity 22 and a liquid refrigerant at the lower part of the motor cavity 22.
In this embodiment, a bearing support 19 and an air-bearing radial bearing 26 are also provided at the right end of the cylinder 15, and both ends of the rotor 14 are supported on the air-bearing radial bearing 25 and the air-bearing radial bearing 26, respectively.
As shown in fig. 1 and 2, in the compressor of some embodiments, the bearing support 13 and the bottom of the cylinder 15 are provided with a communication structure for communicating the motor cavity 22 and the bearing cavity 17 to introduce the liquid cooling fluid at the bottom of the motor cavity 22 to the bearing cavity 17. In this embodiment, the communicating structure includes a radial hole section disposed at the bottom of the cylinder 15, an axial hole section communicated with the radial hole section, and an axial through hole disposed on the bearing support 13 and communicated with the axial hole section. By means of this connection, the liquid cooling fluid in the motor chamber 22 can be conducted into the bearing chamber 17. Wherein, for convenient processing, the radial hole section on the barrel 15 has worn the section of thick bamboo wall of barrel 15 to block off the outer end of radial hole section with end cap 24.
In some embodiments, not shown, the communicating structure may be provided only on the cylinder 15 or only on the bearing support 13, as long as the function of the communicating structure to communicate the motor cavity 22 with the bearing cavity 17 is achieved.
In the present embodiment, the combination of the bearing support 13 and the air bearing 25 is used as a partition structure, and in the embodiment not shown, the partition structure may be provided in other forms.
When the rotor 14 rotates at a high speed, because friction exists between the thrust surface of the air suspension thrust bearing 20 and the surface opposite to the thrust surface, for example, in this embodiment, friction exists between the thrust surface of the air suspension thrust bearing 20 and the surface facing the air suspension thrust bearing 20 of the bearing support 13, which may cause the temperature of the gaseous refrigerant in the bearing cavity 17 to rise, the liquid refrigerant at the bottom of the air suspension thrust bearing 20 may be continuously gasified, the temperature of the refrigerant in the bearing cavity 17 is reduced, and the pressure in the bearing cavity 17 is raised at the same time, so that the liquid level of the liquid refrigerant in the bearing cavity 17 and the pressure in the bearing cavity 17 need to be detected and adjusted.
After being pressurized by a refrigerant pump or other types of pressurizing equipment, the low-temperature liquid refrigerant enters the spiral flow channel 27 between the surface of the stator 16 and the inner wall surface of the cylinder 15 from the cooling fluid inlet arranged on the cylinder 15, is continuously gasified and absorbs heat, then flows out from the outlet of the spiral flow channel 27 and enters the part of the motor cavity 22 positioned at the left end of the cylinder 15, provides working gas for the air suspension radial bearing 25, and cools the air suspension radial bearing 25. Because the quantity of the refrigerant is large, the refrigerant is not completely gasified after passing through the surface of the stator 16, and a part of the refrigerant is gathered at the bottom of the motor cavity 22 to form a gas-liquid coexistence phenomenon. Then part of the liquid refrigerant enters the bearing cavity 17 through a communicating structure arranged at the bottom of the bearing support 13 and the cylinder 15. Because the communicating structure plays a certain throttling role, certain resistance is applied to the flowing of the refrigerant, so that the liquid refrigerant entering the bearing cavity 17 reaches a balanced state after rising to a certain liquid level. Part of the cooling medium flows to the motor cavity 22 at the right end of the cylinder 15 through the fluid channel inside the stator 16 and the gap between the stator 16 and the rotor 14. The right end of the cylinder 15 is provided with an exhaust hole for circulating a refrigerant for cooling the compressor.
In this embodiment, the second predetermined level H2 is equal to the first predetermined level H1 and is equal to the predetermined level H0; the second preset pressure P2 is equal to the first preset pressure P1 and equal to the preset pressure P0.
The specific numerical value of a liquid level preset value H0 corresponding to the liquid level H of the liquid refrigerant in the bearing cavity 17 and the specific numerical value of a pressure preset value P0 corresponding to the pressure P in the bearing cavity 17 can be determined according to the specific structure of the compressor air suspension thrust bearing and the specific operation condition of the unit.
In this embodiment, the installation position of the liquid level sensor 32 is located at the liquid level preset value H0, and it is detected whether the liquid level H of the liquid refrigerant in the bearing cavity 17 meets the operation requirement at any time, so as to determine the amount of the liquid refrigerant in the bearing cavity 17 and the pressure inside the bearing cavity 17, and also detect or analyze the temperature of the liquid refrigerant in the bearing cavity 17.
Wherein, the liquid level sensor 32 is integrated with the drainage screw plug 23, and the height of the liquid level sensor 32 can be cooperatively adjusted through the screwing depth of the drainage screw plug 23 and the thickness of the drainage screw plug sealing gasket 29 so as to adapt to the design requirements of different liquid level preset values H0. The drain plug sealing gasket 29 also plays a sealing role, and prevents the refrigerant from leaking from the threaded matching part of the drain plug 23 and the cylinder 15.
In this embodiment, when the liquid level H of the liquid refrigerant in the bearing cavity 17 is lower than the preset liquid level value H0, the liquid level sensor 32 cannot detect the liquid level H, and then the electric signal is transmitted to the exhaust valve 1 through the first connection line 33, so that the exhaust valve 1 is switched from the closed state to the open state through the electric signal. At this time, the gaseous refrigerant above the bearing cavity 17 flows out of the bearing cavity 17 through the exhaust passage of the exhaust screw 18, the exhaust valve 1, and the exhaust pipe 3. After partial gaseous refrigerant is discharged from bearing cavity 17, be equivalent to carrying out the pressure release to bearing cavity 17, the pressure difference between motor cavity 22 and the bearing cavity 17 changes, the liquid refrigerant of motor cavity 22 bottom can flow into bearing cavity 17 through the communicating structure, make the liquid level H of the liquid refrigerant in bearing cavity 17 constantly rise, liquid level H until the liquid refrigerant in bearing cavity 17 reaches liquid level default H0, namely liquid level H when having reached level sensor 32's detection position, level sensor 32 detects that liquid level H has satisfied the design requirement, need not adjust the pressure size in bearing cavity 17 through discharging gaseous refrigerant again, level sensor 32 then no longer exports the signal of telecommunication to discharge valve 1 through first connecting wire 33, discharge valve 1 is under the condition of no electric signal input, will switch to the closed condition from the open condition.
When the pressure relief valve 1 is opened and the pressure in the motor cavity 22 is too high, too much liquid refrigerant flows into the bearing cavity 17, so that the liquid level H of the liquid refrigerant in the bearing cavity 17 exceeds the preset liquid level H0. When the liquid level sensor 32 has no signal output because the liquid level H exceeds the liquid level preset value H0, the pressure sensor 31 can detect the pressure P in the bearing cavity 17 in real time, at this time, after the pressure sensor 31 detects that the pressure P in the bearing cavity 17 reaches or exceeds the pressure preset value P0, the electric signal can be output to the drain valve 2 through the second connecting line 34 to enable the drain valve 2 to be opened, the liquid refrigerant is continuously discharged through the drain passage of the drain plug screw 23, the drain valve 2 and the drain pipe 4, the liquid level H of the liquid refrigerant in the bearing cavity 17 is controlled at a reasonable value or range, and thus the gas suspension thrust bearing 20 can be effectively prevented from being immersed to influence the formation of a gas film.
In this embodiment, when the liquid level H of the liquid refrigerant in the bearing cavity 17 is higher than the detection position of the liquid level sensor 32, that is, the liquid level H of the liquid refrigerant is higher than the liquid level preset value H0, and the pressure in the bearing cavity 17 is lower than the pressure preset value P0, both the exhaust valve 1 and the drain valve 2 are closed, the gaseous refrigerant and the liquid refrigerant cannot flow out of the corresponding bypass structure, that is, the liquid level H of the liquid refrigerant in the bearing cavity 17 and the pressure P in the bearing cavity 17 are in a relatively proper working state, and the bearing cavity pressure adjusting device does not temporarily participate in the adjustment work of the liquid level H and the pressure P in the bearing cavity 17.
In this embodiment, when the liquid level H of the liquid refrigerant in the bearing cavity 17 is above the preset liquid level H0, if the pressure P in the bearing cavity 17 is always increased, when the pressure sensor 31 detects that the pressure P in the bearing cavity 17 is greater than or equal to the preset pressure P0, the pressure sensor 31 sends an electrical signal to open the drain valve 2 to bypass the liquid refrigerant.
In this embodiment, the control priority of the pressure sensor 31 is lower than that of the liquid level sensor 32, and when the liquid level H drops to the preset liquid level value H0, the liquid level sensor 32 detects a liquid level signal, and the pressure sensor 31 stops sending a signal to the drain valve 2 to close the drain valve 2.
In this embodiment, the pressure sensor 31 sends an electrical signal to open the drain valve 2, which satisfies two conditions, that is, the liquid level sensor 32 outputs no signal because the liquid level H exceeds the preset liquid level value H0, and the pressure P detected by the pressure sensor 31 is greater than or equal to the preset pressure value P0.
As can be seen from the above description, the embodiments of the present disclosure have at least one of the following technical effects:
the compressor has a bearing chamber level adjustment device that can adjust the level or pressure within the bearing chamber 17 by bypassing the cooling fluid, such as: the pressure and the liquid level in the bearing cavity 17 can be adjusted in a bypass gas mode according to the pressure information in the bearing cavity 17 and/or the liquid level and the pressure in the bearing cavity 17 can be adjusted in a bypass liquid cooling fluid mode according to the liquid level information in the bearing cavity 17, the adjusting range of the liquid level of the cooling fluid in the bearing cavity 17 is improved, the pressure of the bearing cavity 17 is adjustable, the temperature and the pressure of the cooling fluid in the bearing cavity are stabilized in a proper range, and therefore the operation reliability of the compressor is improved.
When solving compressor motor cooling problem, can be for compressor gas suspension journal bearing and gas suspension thrust bearing air feed, do benefit to and prevent to enter into gas suspension thrust bearing and gas suspension journal bearing and influence the formation of the effective air film of gas suspension bearing because of the too much hydrops that produces of the liquid refrigerant that does not gasify of motor chamber 22, further improve the job stabilization nature and the reliability of compressor.
In the compressor disclosed by the disclosure, the bearing cavity liquid level adjusting device is a self-adaptive adjusting device, and the adjusting work is participated only when the cooling fluid parameter does not meet the normal working condition.
Finally, it should be noted that: the above examples are intended only to illustrate the technical solutions of the present disclosure and not to limit them; although the present disclosure has been described in detail with reference to preferred embodiments, those of ordinary skill in the art will understand that: modifications to the embodiments of the disclosure or equivalent replacements of parts of the technical features may be made, which are all covered by the technical solution claimed by the disclosure.
Claims (10)
1. A compressor, comprising:
a barrel (15) comprising a mounting cavity;
the stator (16) is fixedly arranged in the mounting cavity and comprises a rotor mounting hole;
a rotor (14) rotatably mounted in the rotor mounting hole;
an air-bearing thrust bearing (20) for carrying axial forces of the rotor (14);
the separation structure is fixedly arranged in the installation cavity, the separation structure separates the installation cavity into a motor cavity (22) for installing the stator (16) and a bearing cavity (17) for installing the air suspension thrust bearing (20), and a communication structure which is communicated with the motor cavity (22) and the bearing cavity (17) to introduce liquid cooling fluid at the bottom of the motor cavity (22) into the bearing cavity (17) is arranged at the bottom of the separation structure and/or the barrel (15); and
the bearing cavity liquid level adjusting device comprises a cooling fluid bypass structure which is communicated with the outside of the compressor, and a sensing device which is coupled with the cooling fluid bypass structure, wherein the sensing device is used for detecting state information of cooling fluid in the bearing cavity (17) and controlling the cooling fluid bypass structure to be opened or closed according to the state information.
2. The compressor of claim 1,
the cooling fluid bypass structure comprises a gaseous fluid bypass structure communicating with an upper portion of the bearing cavity (17);
the sensing device comprises a liquid level sensor (32) coupled with the gaseous fluid bypass structure, wherein the liquid level sensor (32) is used for detecting liquid level information of liquid cooling fluid in the bearing cavity (17) and controlling the gaseous fluid bypass structure to be opened or closed according to the liquid level information.
3. The compressor of claim 2, wherein the gaseous fluid bypass structure and the liquid level sensor (32) are configured to: the level sensor (32) detects in the bearing chamber (17) open when cooling fluid's level H is less than first preset level H1 gaseous fluid bypass structure, level sensor (32) detects in the bearing chamber (17) cooling fluid's level H is more than or equal to second preset level H2 closed gaseous fluid bypass structure, wherein, second preset level H2 more than or equal to first preset level H1.
4. Compressor according to claim 2 or 3,
the cooling fluid bypass structure comprises a liquid fluid bypass structure communicating with a lower portion of the bearing cavity (17);
the sensing device comprises a pressure sensor (31) coupled with the liquid fluid bypass structure, and the pressure sensor (31) is used for detecting pressure information in the bearing cavity (17) and controlling the liquid fluid bypass structure to be opened or closed according to the pressure information.
5. The compressor of claim 4, wherein the liquid fluid bypass structure and the pressure sensor (31) are configured to: liquid level sensor (32) detect in bearing chamber (17) when liquid level H of cooling fluid is the second preset liquid level H2 more than or equal to, pressure sensor (31) detect pressure P in bearing chamber (17) is closed when being less than first preset pressure P1 liquid fluid bypass structure, pressure sensor (31) detect open when pressure P in bearing chamber (17) is the second preset pressure P2 liquid fluid bypass structure, wherein, second preset pressure P2 more than or equal to first preset pressure P1.
6. The compressor of claim 4, wherein the gaseous fluid bypass arrangement comprises:
the exhaust screw plug (18) comprises an exhaust screw plug body connected with the cylinder (15) in a sealing mode and an exhaust channel arranged on the exhaust screw plug body and used for communicating the bearing cavity (17) with the outside of the compressor, and the pressure sensor (31) is arranged on the exhaust screw plug (18); and
discharge valve (1), set up in the one end of keeping away from of discharge passage bearing chamber (17) is used for control discharge passage with the compressor outside intercommunication, level sensor (32) with discharge valve (1) coupling is in order to control discharge valve (1) is opened.
7. The compressor of claim 4, wherein the liquid fluid bypass arrangement comprises:
the liquid drainage screw plug (23) comprises a liquid drainage screw plug body connected with the barrel (15) in a sealing way and a liquid drainage channel arranged on the liquid drainage screw plug body and used for communicating the bearing cavity (17) with the outside of the compressor, and the liquid level sensor (32) is arranged on the liquid drainage screw plug (23); and
the liquid discharge valve (2) is arranged at one end of the liquid discharge channel, which is far away from the bearing cavity (17), and is used for controlling whether the liquid discharge channel is communicated with the outside of the compressor or not, and the pressure sensor (31) is coupled with the liquid discharge valve (2) to control whether the liquid discharge valve (2) is opened or not.
8. The compressor according to claim 7, characterized in that the liquid fluid bypass structure comprises a drainage plug sealing gasket (29), the drainage plug sealing gasket (29) being arranged between the drainage plug (23) and the cylinder (15) for sealing a gap between the drainage plug body and the cylinder (15), the height of the liquid level sensor (32) with respect to the bottom wall of the cylinder (15) being adjusted by adjusting the thickness of the drainage plug sealing gasket (29).
9. The compressor of claim 1, wherein the partition structure comprises:
the bearing support (13) is fixedly arranged in the mounting cavity; and
the air suspension radial bearing (25) is arranged in the bearing support (13), the rotor (14) is rotatably supported on the air suspension radial bearing (25), and the communication structure is arranged at the bottom of the bearing support (13) and/or the cylinder (15).
10. A refrigeration system comprising a refrigerant circuit, characterized in that the refrigerant circuit comprises a compressor according to any one of claims 1 to 9, the cooling fluid inlet communicates with the refrigerant circuit to introduce refrigerant in the refrigerant circuit into the cylinder (15) as the cooling fluid, and the cooling fluid bypass structure is connected with the refrigerant circuit for bypassing the cooling fluid to the refrigerant circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020041927.0U CN211398059U (en) | 2020-01-09 | 2020-01-09 | Compressor and refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020041927.0U CN211398059U (en) | 2020-01-09 | 2020-01-09 | Compressor and refrigerating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211398059U true CN211398059U (en) | 2020-09-01 |
Family
ID=72224681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020041927.0U Withdrawn - After Issue CN211398059U (en) | 2020-01-09 | 2020-01-09 | Compressor and refrigerating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211398059U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090588A (en) * | 2020-01-09 | 2021-07-09 | 珠海格力电器股份有限公司 | Compressor, refrigerating system and bearing cavity liquid level adjusting method of compressor |
| CN117145999A (en) * | 2023-07-21 | 2023-12-01 | 江森自控日立万宝空调(广州)有限公司 | Refrigerant control method, system, device and storage medium |
-
2020
- 2020-01-09 CN CN202020041927.0U patent/CN211398059U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090588A (en) * | 2020-01-09 | 2021-07-09 | 珠海格力电器股份有限公司 | Compressor, refrigerating system and bearing cavity liquid level adjusting method of compressor |
| CN113090588B (en) * | 2020-01-09 | 2024-04-30 | 珠海格力电器股份有限公司 | Compressor, refrigeration system and bearing cavity liquid level adjusting method of compressor |
| CN117145999A (en) * | 2023-07-21 | 2023-12-01 | 江森自控日立万宝空调(广州)有限公司 | Refrigerant control method, system, device and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113090554B (en) | Compressor and refrigerant circulation system | |
| CN211398059U (en) | Compressor and refrigerating system | |
| US4404812A (en) | Method and apparatus for controlling the operation of a centrifugal compressor in a refrigeration system | |
| US11415136B2 (en) | Screw compressor | |
| US11618556B2 (en) | Lubrication pressue control of a power transmission device for helicopter | |
| JP2007315227A (en) | Expander integrated compressor, and refrigerating cycle apparatus | |
| CN113090588A (en) | Compressor, refrigerating system and bearing cavity liquid level adjusting method of compressor | |
| KR20110050372A (en) | Vapor compressor | |
| CN114198828B (en) | Air suspension unit system and control method | |
| CN109162967B (en) | Bearing cooling device, compressor, and bearing cooling control method | |
| US20040112679A1 (en) | System and method for lubricant flow control in a variable speed compressor package | |
| JP2011202817A (en) | Refrigerating cycle device | |
| JPS598672B2 (en) | Compressor for refrigerator | |
| CN107401509B (en) | Oil supply device for compressor and compressor | |
| CN114198944B (en) | Compressor and liquid supply system of compressor | |
| CN212716803U (en) | Voltage stabilization mechanism, engine and vehicle | |
| CN112928866A (en) | Cooling circulation loop for high-power high-speed submersible pump | |
| US4487562A (en) | Rotary vane type compressor | |
| CN218565825U (en) | External oil return structure and refrigeration equipment | |
| US4671748A (en) | Compressor unit for the production of compressed air | |
| CN218542685U (en) | Oil return structure of compressor and centrifugal machine and air conditioner comprising oil return structure | |
| US4890461A (en) | Hermetic or semi-hermetic refrigeration motor-compressor unit | |
| CN218347462U (en) | Lubricating oil system for gas turbine | |
| CN117588426A (en) | Compressor oil return structure, compressor and air conditioning equipment | |
| JPH03168383A (en) | Adjustment of oiling amount by discharge temperature control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200901 Effective date of abandoning: 20240430 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200901 Effective date of abandoning: 20240430 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |