CN114087290A

CN114087290A - Air supply system and refrigerating system for suspension bearing

Info

Publication number: CN114087290A
Application number: CN202111315669.6A
Authority: CN
Inventors: 张晓锐; 陈远; 张捷; 邓善营; 王铁伟
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-02-25
Anticipated expiration: 2041-11-08
Also published as: WO2023077810A1

Abstract

The application relates to the technical field of refrigeration, discloses an air feed system for suspension bearing, includes: the system comprises a compressor, a first circulation assembly, a second circulation assembly and a regulation assembly. The second circulation assembly comprises an air supply tank and an air supply box; the air supply box comprises an outer cavity and an inner cavity arranged in the outer cavity, and filling liquid is filled between the outer cavity and the inner cavity; the inner cavity takes gas from the evaporator and/or the gas supplementing pipeline and supplies the gas to the gas supply tank; the inner cavity is a deformable cavity, and gas can be taken or supplied when the inner cavity is deformed; the adjusting component is used for changing the filling liquid phase so as to force the inner cavity to deform. Under the action of the adjusting assembly, the filling liquid is gasified to force the inner cavity to deform and shrink, and the air is supplied to the air supply tank while the inner cavity shrinks; after the gasified filling liquid is liquefied again, the inner cavity is not compressed any more, and the gas can be continuously taken out for expansion. The application also discloses a refrigeration system.

Description

Air supply system and refrigerating system for suspension bearing

Technical Field

The present application relates to the field of refrigeration technology, and for example, to an air supply system for a suspension bearing and a refrigeration system.

Background

The compressor is a key component in the field of air-conditioning refrigeration, and the bearings of the compressor comprise an oil lubrication bearing and a suspension bearing, and the suspension bearing comprises a magnetic suspension bearing and an air suspension bearing. The compressor adopting the suspension bearing does not need lubricating oil to lubricate the bearing, so that the phenomenon that the heat exchange efficiency of the air conditioning system is reduced due to the mixing of the lubricating oil and the refrigerant is avoided. Meanwhile, the gas suspension bearing needs to supply gas into the bearing through a set of gas supply system, so that the rotor is lubricated and supported. The stability of the air supply system is therefore directly related to the performance of the compressor.

The prior art discloses an air supply system for a suspension bearing, which extracts a gaseous refrigerant from the upper part of a condenser through a newly added compressor, and introduces the refrigerant into an air supply tank after the refrigerant is compressed. The air supply tank supplies air to an air bearing of the compressor through a flow path.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art: the gas pressure is increased by newly adding the compressor, and although the gaseous refrigerant of the condenser can be supplied to the gas supply tank, the pressure in the gas supply tank is increased rapidly, so that the gas cannot be stably supplied to the gas supply tank. And the newly-added compressor makes the control system more complicated and costly.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides an air supply system and a refrigeration system for a suspension bearing, and solves the problem that the air supply system cannot stably supply air to an air supply tank.

In some embodiments, the air supply system for a suspension bearing comprises:

a compressor including a suspension bearing;

a first circulation assembly comprising a condenser and an evaporator in communication with the condenser; the condenser is communicated with an exhaust port of the compressor, and the evaporator is communicated with an air suction port of the compressor;

a second circulation assembly including a gas supply tank and a gas supply tank; the air supply tank is communicated with the suspension bearing and is used for supplying air to the suspension bearing; the gas supply box comprises an outer cavity and an inner cavity arranged in the outer cavity, and filling liquid is filled between the outer cavity and the inner cavity; the inner cavity takes gas from the gas supplementing pipeline of the evaporator and/or the compressor and supplies gas to the gas supply tank; the inner cavity is a deformable cavity and can be used for taking or supplying air when being deformed;

the adjusting component is used for enabling the filling liquid to change phase so as to force the inner cavity to deform; the adjusting unit includes a gas heating unit that vaporizes the filling liquid by transferring heat to the filling liquid through a gas.

Optionally, the gas heating section includes:

one end of the high-temperature gas pipeline is communicated with the exhaust port, and the other end of the high-temperature gas pipeline is communicated with the evaporator; at least part of the high-temperature gas pipeline is positioned in the filling liquid.

Optionally, a throttling assembly is arranged on the high-temperature gas pipeline;

the throttle assembly includes:

the expansion valve is arranged on a pipe section of the high-temperature gas pipeline between the filling liquid and the evaporator;

and the first electromagnetic valve is arranged on a pipe section of the high-temperature gas pipeline between the filling liquid and the exhaust port.

Optionally, the adjustment assembly further comprises:

and a liquid heating unit for transferring heat to the filling liquid through the liquid to vaporize the filling liquid.

Optionally, the liquid heating section includes:

and the first high-temperature liquid pipeline is communicated with the cooling water pipeline of the condenser, and at least part of the first high-temperature liquid pipeline is positioned in the filling liquid.

Optionally, the liquid heating section further includes:

a water tank filled with hot water;

and the second high-temperature liquid pipeline is communicated with the water tank, and at least part of the second high-temperature liquid pipeline is positioned in the filling liquid.

Optionally, the conditioning assembly further comprises a heat absorption portion to transfer cold to the vaporized filling liquid to liquefy it.

Optionally, the heat sink portion comprises a liquid heat sink portion;

the liquid heat absorbing part includes:

the low-temperature liquid pipeline is communicated with the freezing water pipeline of the evaporator; at least part of the low-temperature liquid pipeline is positioned in the filling liquid and used for transferring cold energy to the gasified filling liquid through the liquid.

Optionally, the heat absorbing portion further comprises a gas heat absorbing portion;

the gas heat absorption part includes:

the low-temperature gas pipeline is communicated with the evaporation pipeline of the evaporator; at least part of the low-temperature gas pipeline is positioned in the filling liquid and used for transferring heat and cold to the gasified filling liquid through gas.

In some embodiments, the refrigeration system comprises the air supply system for a suspension bearing of any of the embodiments described above.

The air supply system and the refrigeration system for the suspension bearing provided by the embodiment of the disclosure can realize the following technical effects:

the inner cavity obtains gaseous refrigerant from the evaporator or the air supply pipeline, and the inner cavity deforms and expands after being filled with the gaseous refrigerant. After the filling liquid between the outer cavity and the inner cavity is changed in phase, pressure difference is formed between the outer cavity and the inner cavity, and after the inner cavity is filled with gas, the filling liquid is gasified through the gas heating part, so that the pressure of the outer cavity is greater than that of the inner cavity. At the moment, the gas in the outer cavity forces the deformation of the inner cavity to be reduced, meanwhile, the gaseous refrigerant in the inner cavity is supplied to the gas supply tank, and finally, the gas supply tank supplies the gaseous refrigerant to the suspension bearing. When the pressure of the outer cavity is smaller than that of the inner cavity, the inner cavity is not compressed any more, and the air can be continuously taken out, and the inner cavity deforms and expands again while the air is taken out. The reciprocating circulation supplies air to the air supply tank stably through the air supply box.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

FIG. 1 is a schematic diagram of an air supply system for a suspension bearing provided by an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of an air supply box provided by an embodiment of the disclosure;

FIG. 3 is a schematic diagram of an air supply system for another suspension bearing provided by embodiments of the present disclosure;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a schematic diagram of a first high temperature liquid pipeline provided by an embodiment of the present disclosure;

fig. 6 is a schematic view of an air supply system for another suspension bearing provided by an embodiment of the present disclosure.

Reference numerals:

100: a compressor; 110: an evaporator; 120: a condenser; 130: an economizer; 131: an air supply pipeline;

200: an air supply tank; 201: a gas supply line; 202: a liquid supply line; 210: a gas supply tank; 211: an inner cavity; 212: an outer cavity;

300: a high temperature gas line; 310: a first high temperature liquid line; 320: a second high temperature liquid line; 321: a water tank; 322: an electric heater; 330: low-temperature liquid pipeline

410: a first solenoid valve; 411: an expansion valve; 420: a second solenoid valve; 430: a third electromagnetic valve; 440: a fourth solenoid valve; 450: a fifth solenoid valve; 460: a sixth electromagnetic valve; 470: a seventh electromagnetic valve; 480: an eighth solenoid valve; 490: a ninth electromagnetic valve; 491: a tenth solenoid valve;

510: a first check valve; 520: a second one-way valve; 530: a third check valve; 540: a fourth check valve; 550: a fifth check valve; 560: and a sixth one-way valve.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

The air conditioning system generally includes a compressor 100, a condenser 120, an economizer 130, a throttling device and an evaporator 110, wherein the condenser 120 is communicated with an exhaust port of the compressor 100, the condenser 120 is communicated with the evaporator 110 through the economizer 130 and the throttling device, the evaporator 110 is communicated with a suction port of the compressor 100, a refrigerant discharged from the exhaust port of the compressor 100 passes through the condenser 120, the economizer 130, the throttling device and the evaporator 110 in sequence, and finally returns to the compressor 100 and is recompressed, thus performing a refrigerant cycle. The condenser 120 conducts the heat generated by the condenser to the outdoor through the cooling water pipeline for heat dissipation; the evaporator 110 conducts the cold energy generated by it to the indoor refrigeration through the chilled water line. The compressor 100 is connected to the economizer 130 through a purge line 131, and the economizer 130 can purge the compressor 100 through the purge line 131.

As shown in connection with fig. 1-6, embodiments of the present disclosure provide an air supply system for a suspension bearing including a compressor 100, a first circulation assembly, a second circulation assembly, and a regulation assembly. Wherein the compressor 100 includes a suspension bearing; the first circulation assembly includes a condenser 120 and an evaporator 110 in communication with the condenser 120; the condenser 120 is communicated with the exhaust port of the compressor 100, and the evaporator 110 is communicated with the suction port of the compressor 100; the second circulation assembly includes a gas supply tank 200 and a gas supply tank 210; the air supply tank 200 is communicated with the floating bearing and is used for supplying air to the floating bearing; the gas supply tank 210 includes an outer chamber 212 and an inner chamber 211 disposed in the outer chamber 212, and a filling liquid is provided between the outer chamber 212 and the inner chamber 211; the inner cavity 211 takes gas from the evaporator 110 and/or the gas supply line 131 and supplies the gas to the gas supply tank 200; the inner cavity 211 is a deformable cavity and can take or supply air when deformed; the adjusting component is used for changing the filling liquid phase, so as to adjust the pressure difference between the outer cavity 212 and the inner cavity 211 to force the inner cavity 211 to deform; the regulating unit includes a gas heating unit that vaporizes the filling liquid by transferring heat to the filling liquid through the gas.

By adopting the air supply system for the suspension bearing provided by the embodiment of the disclosure, the inner cavity 211 obtains the gaseous refrigerant from the evaporator 110 or the air supply pipeline 131, and the inner cavity 211 deforms and expands after being filled with the gaseous refrigerant. After the filling liquid between the outer cavity 212 and the inner cavity 211 changes phase, a pressure difference is formed between the outer cavity 212 and the inner cavity 211, and after the inner cavity 211 is full of gas, the filling liquid is gasified by the gas heating part, so that the pressure of the outer cavity 212 is greater than that of the inner cavity 211. At this time, the gas in the outer chamber 212 forces the inner chamber 211 to be deformed and reduced, and the gaseous refrigerant in the chamber is supplied to the gas supply tank 200, and finally the gas supply tank 200 supplies the gaseous refrigerant to the floating bearing. When the pressure of the outer cavity 212 is lower than that of the inner cavity 211, the inner cavity 211 is not compressed any more, so that the air can be continuously taken out, and the inner cavity 211 deforms and expands again while the air is taken out. The reciprocating cycle stably supplies gas to the gas supply tank 200 through the gas supply tank 210.

Alternatively, as shown in fig. 2, the lumen 211 may be a bellows-type balloon. When the inner cavity 211 is inflated, the corrugated air bag is gradually deformed and expanded; when the filling liquid is vaporized to make the pressure of the outer cavity 212 greater than the pressure of the inner cavity 211, the refrigerant in the inner cavity 211 is supplied to the gas supply tank 200 while the gas forces the inner cavity 211 to deform and shrink. Moreover, the corrugated air bag has a good heat insulation function, and heat exchange between the outer cavity 212 and the inner cavity 211 is avoided.

Further, optionally, a first pressure sensor is disposed in the inner cavity 211. The first pressure sensor is used to monitor the pressure in the lumen 211.

Still further, optionally, a second pressure sensor is provided in the gas supply tank 200. The second pressure sensor is used to monitor the pressure of the gas supply tank 200.

In some embodiments, the outer chamber 212 receives liquid refrigerant from the evaporator 110 as the fill liquid, or the outer chamber 212 receives liquid refrigerant from the condenser 120 as the fill liquid, or the outer chamber 212 receives liquid refrigerant from both the evaporator 110 and the condenser 120 as the fill liquid.

Alternatively, as shown in fig. 1, the outer chamber 212 may simultaneously receive liquid refrigerant from the evaporator 110 and the condenser 120 via a liquid extraction line, which includes a main tube section, a first branch section, and a second branch section. The inlet of the first branch pipe section is communicated with the evaporator 110, the inlet of the second branch pipe section is communicated with the condenser 120, the outlet of the first branch pipe section and the outlet of the second branch pipe section are communicated with the inlet of the main pipe section, and the outlet of the main pipe section is communicated with the outer cavity 212. Thus, the liquid refrigerant in the evaporator 110 may sequentially enter the outer chamber 212 through the first branch pipe section and the main pipe section, and the liquid refrigerant in the condenser 120 may sequentially enter the outer chamber 212 through the second branch pipe section and the main pipe section.

Further, optionally, the first branch pipe section is provided with a second solenoid valve 420, the second branch pipe section is provided with a third solenoid valve 430, and the main pipe section is provided with a first check valve 510. Thus, by controlling the state of the second solenoid valve 420 and the third solenoid valve 430, the outer chamber 212 can be caused to draw liquid from either the evaporator 110 or the condenser 120, or both the evaporator 110 and the condenser 120. The fill liquid in the outer chamber 212 is prevented from flowing back to the evaporator 110 and the condenser 120 by the first check valve 510.

In some embodiments, the evaporator 110 is in communication with the internal chamber 211 sequentially via a fourth solenoid valve 440 and a second one-way valve 520. When the fourth solenoid valve 440 is open, the chamber 211 can receive the gaseous refrigerant from the evaporator 110. The direction of conduction of the second check valve 520 is defined to be from the evaporator 110 to the inner cavity 211, which prevents the gas in the inner cavity 211 from flowing back into the evaporator 110.

In some embodiments, the air supplement line 131 is in communication with the inner cavity 211 sequentially through the fifth solenoid valve 450 and the third check valve 530. When the fifth solenoid valve 450 is in the open state, the inner cavity 211 can receive the gaseous refrigerant from the air supplement pipeline 131. The third check valve 530 is defined to be opened from the gas supply line 131 to the inner cavity 211, so that the gas in the inner cavity 211 can be prevented from flowing back to the gas supply line 131.

When the compressor 100 is started, the pressure of the air supply line 131 is higher than the pressure of the evaporator 110, the fifth solenoid valve 450 is opened and the fourth solenoid valve 440 is closed, so that the inner cavity 211 preferentially takes air from the air supply line 131. The pressure supplied from inner chamber 211 to air supply tank 200 is thus high, and the effect of supplying air from air supply tank 200 to the air bearing is further improved.

In some embodiments, the gas heating section includes a high temperature gas line 300. One end of the high-temperature gas pipeline 300 is communicated with the exhaust port, and the other end is communicated with the evaporator 110; at least a portion of the high temperature gas line 300 is located in the fill fluid. The high-temperature and high-pressure gas discharged from the compressor 100 is introduced into the evaporator 110 through the high-temperature gas line 300, and when the gas passes through a pipe section of the high-temperature gas line 300 located in the filling liquid, it transfers heat to the filling liquid and vaporizes the filling liquid. After the filling liquid is gasified, the pressure in the outer chamber 212 increases, and the gas refrigerant in the inner chamber is supplied to the gas supply tank 200 while the inner chamber 211 is compressed and deformed to be reduced.

Optionally, a throttling component is arranged on the high-temperature gas pipeline 300; the throttle assembly includes an expansion valve 411 and a first solenoid valve 410. Wherein the expansion valve 411 is disposed on a pipe section of the high temperature gas line 300 between the filling liquid and the evaporator 110; the first solenoid valve 410 is provided on a section of the high temperature gas line 300 between the filling liquid and the exhaust port. In a state where the first solenoid valve 410 is opened, high-temperature and high-pressure gas discharged from the compressor 100 may flow toward the evaporator 110 through the high-temperature gas pipe 300. The high-temperature gas in the high-temperature gas line 300 is liquefied after heat exchange with the filling liquid, and flows to the evaporator 110 after being throttled by the expansion valve 411.

In some embodiments, the conditioning assembly further includes a liquid heating portion to transfer heat through the liquid to the fill liquid to vaporize the fill liquid.

Alternatively, as shown in fig. 5, the liquid heating part includes a first high-temperature liquid pipe 310. The first high temperature liquid line 310 is connected to the cooling water line of the condenser 120, and at least a portion of the first high temperature liquid line 310 is located in the filling liquid. The cooling water in the cooling water line exchanges heat with the high-temperature, high-pressure gaseous refrigerant in the condenser 120, and the temperature of the cooling water increases. The high-temperature cooling water transfers heat to the filling liquid and vaporizes the filling liquid when passing through the pipe section of the first high-temperature liquid pipe 310 located in the filling liquid. The heat energy of the cooling water is fully utilized.

Further, optionally, a sixth single solenoid valve is provided on the first high temperature liquid line 310. In the open state of the sixth solenoid valve 460, high-temperature cooling water circulates through the first high-temperature liquid line 310.

In some embodiments, as shown in fig. 3 and 4, the liquid heating part further includes a water tank 321 and a second high temperature liquid pipe 320. Wherein, the water tank 321 is filled with hot water; the second high temperature liquid pipeline 320 is communicated with the water tank 321, and at least a part of the second high temperature liquid pipeline 320 is located in the filling liquid.

Optionally, an electric heater 322 is provided in the water tank 321, and the temperature of the liquid in the water tank 321 can be maintained by the electric heater 322. Furthermore, the temperature rise speed of the liquid can be adjusted by controlling the power of the electric heater 322, so as to accelerate or decelerate the phase change vaporization rate of the filling liquid, and further adjust the gas supply rate of the inner cavity 211 to the gas supply tank 200. For example, the pressure in the gas supply tank 200 is high and the cavity 211 needs to supply gas only slowly to the gas supply tank 200 to meet the demand of the gas supply system. At this time, the power of the electric heater 322 is reduced to maintain the liquid in the second high-temperature liquid line 320 at a low temperature, and the vaporization rate of the filling liquid is reduced. The time for exhausting gas from the cavity 211 is extended, the cavity 211 exhausts gas to the gas supply tank 200 at a slower rate.

Further, optionally, a seventh electromagnetic valve 470 is disposed on the second high-temperature liquid pipeline 320. When the seventh solenoid valve 470 is in the open state, high-temperature liquid circulates through the second high-temperature liquid line 320.

Still further, optionally, a temperature sensor is provided in the water tank 321. The temperature of the water in the water tank 321 is monitored by a temperature sensor.

In some embodiments, the conditioning assembly further comprises a heat absorbing portion to transfer cold to the vaporized fill liquid to liquefy it. When the vaporized fill fluid re-liquefies, the pressure in the outer chamber 212 decreases and the inner chamber 211 is no longer pressurized and can continue to expand.

Optionally, the heat sink portion comprises a liquid heat sink portion; the liquid heat absorption part comprises a low-temperature liquid pipeline 330, and the low-temperature liquid pipeline 330 is communicated with the freezing water pipeline of the evaporator 110; at least a portion of the cryogenic liquid line 330 is located in the fill liquid to transfer cold through the liquid to the vaporized fill liquid. The temperature of the chilled water decreases after the chilled water in the chilled water line exchanges heat with the low-temperature, low-pressure gaseous refrigerant in the evaporator 110. When the cryogenic chilled water passes through the section of the cryogenic liquid line 330 that is in the fill fluid, it transfers cold to the fill fluid and re-liquefies the vaporized fill fluid. The cold energy of the chilled water is fully utilized.

Further, optionally, an eighth solenoid valve 480 is disposed on the low-temperature liquid pipe 330. In the opened state of the eighth solenoid valve 480, the low-temperature liquid circulates through the low-temperature liquid pipe 330.

Optionally, the heat absorbing section further comprises a gas heat absorbing section; the gas heat absorption part comprises a low-temperature gas pipeline which is communicated with an evaporation pipeline of the evaporator 110; at least part of the low-temperature gas pipeline is positioned in the filling liquid and used for transferring heat and cold to the gasified filling liquid through gas. The low-temperature gaseous refrigerant in the evaporation pipeline is introduced into the low-temperature gas pipeline and transfers cold energy to the filling liquid and enables the gasified filling liquid to be liquefied again when passing through the pipe section of the low-temperature gas pipeline positioned in the filling liquid. The low temperature gaseous refrigerant in the evaporation line reduces the indoor temperature and simultaneously adjusts the air pressure in the outer cavity 212.

In some embodiments, the inner chamber 211 is in communication with the gas supply tank 200 through a ninth solenoid valve 490 and a fourth check valve 540 in sequence. The chamber 211 may supply the gas refrigerant to the gas supply tank 200 in an opened state of the ninth solenoid valve 490. The fourth check valve 540 is defined to be opened from the inner cavity 211 to the gas supply tank 200, so that the gas in the gas supply tank 200 can be prevented from flowing back to the inner cavity 211.

In some embodiments, as shown in fig. 6, gas supply tank 200 communicates with the gas suspension bearing of compressor 100 through gas supply line 201. Fifth check valve 550 is provided in air supply line 201, and the direction of opening of fifth check valve 550 is defined to be directed from air supply tank 200 to the aero-levitation bearing, thereby preventing the gaseous refrigerant in the aero-levitation bearing from flowing back into air supply tank 200.

Optionally, the air supply line 201 is in communication with the evaporator 110 or the condenser 120 via a liquid supply line 202. The evaporator 110 or the condenser 120 supplies liquid to the liquid supply line 202, and the liquid in the liquid supply line 202 enters the gas supply line 201 and then is mixed with the gas from the gas supply tank 200 to form a gas-liquid two-phase medium. The gas-liquid two-phase medium enters a flow channel in the gas suspension bearing and then becomes a gaseous refrigerant after throttling and heat absorption.

Further, optionally, the supply line 202 is communicated to the supply line 201 sequentially through a tenth solenoid valve 491 and a sixth check valve 560. When the tenth solenoid valve 491 is opened, the liquid supply line 202 can supply liquid refrigerant to the air supply line 201. The direction of conduction of the sixth check valve 560 is defined to lead from the liquid supply line 202 to the gas supply line 201, which can prevent gas in the gas supply line 201 from flowing to the liquid supply line 202.

Further, optionally, a third pressure sensor is provided on the liquid supply line 202. The third pressure sensor is used to monitor the pressure in the supply line 202. Here, the pressure of the liquid supply line 202 may be adjusted by controlling the opening degree of the ninth solenoid valve 490 so that the pressure of the liquid supply line 202 is kept identical to the pressure of the gas supply tank 200.

Here, an air supply control process of the air supply system for the levitation bearing is explained with reference to fig. 1:

the method comprises the following steps: the fourth electromagnetic valve 440 is controlled to be opened, and the inner cavity 211 obtains gaseous refrigerant from the evaporator 110; and/or, the fifth electromagnetic valve 450 is controlled to be opened, and the inner cavity 211 obtains the gaseous refrigerant from the air supply pipeline 131; the inner cavity 211 gradually deforms and expands after air is taken;

step two: after the gaseous refrigerant in the inner cavity 211 is full, the first solenoid valve 410 is controlled to open, and the high temperature gas pipeline 300 is conducted. The high-temperature gas exchanges heat with the filling liquid, the pressure of the outer cavity 212 is greater than that of the inner cavity 211 after the filling liquid is gasified, and the gas in the outer cavity 212 forces the inner cavity 211 to deform and shrink;

step three: the ninth electromagnetic valve 490 is controlled to be opened, and the gaseous refrigerant in the cavity is forced to be discharged to the gas supply tank 200 while the deformation of the cavity 211 is reduced;

step four: after the gaseous refrigerant in the inner cavity 211 is exhausted, the eighth solenoid valve 480 is controlled to be opened, the first solenoid valve 410 is controlled to be closed, and the low-temperature liquid pipe 330 is conducted. The frozen water exchanges heat with the gasified filling liquid, the pressure difference between the inner cavity 211 and the outer cavity 212 is gradually eliminated after the gasified filling liquid is liquefied again, the inner cavity 211 is not squeezed by the gas in the outer cavity 212 any more, and the inner cavity 211 can continue to take gas for expansion.

In the second step, only one of the high-temperature gas pipeline 300, the first high-temperature liquid pipeline 310 and the second high-temperature liquid pipeline 320 may be connected, or two or three of them may be connected at the same time. In step four, only one of the cryogenic liquid line 330 and the cryogenic gas line may be conducted, or both may be conducted simultaneously. Thereby adjusting the rate at which the inner chamber 211 supplies gas to the gas supply tank 200.

For example, when the gas temperature in the high temperature gas pipeline 300 is less than 45 ℃, the electric heater 322 in the water tank 321 is turned on, and the first solenoid valve 410 and the seventh solenoid valve 470 are controlled to be turned on, so that the high temperature gas pipeline 300 and the second high temperature liquid pipeline 320 are synchronously conducted. At this time, the vaporization rate of the filling liquid is increased, and the time for supplying the gas from the inner chamber 211 to the gas supply tank 200 is shortened.

For another example, when the gas temperature in the high temperature gas pipe 300 is less than 35 ℃, the electric heater 322 in the water tank 321 is turned on, and the first solenoid valve 410, the sixth solenoid valve 460 and the seventh solenoid valve 470 are controlled to be turned on simultaneously, so that the high temperature gas pipe 300, the first high temperature liquid pipe 310 and the second high temperature liquid pipe 320 are conducted simultaneously. Thereby further increasing the rate at which the interior 211 supplies gas to the gas supply tank 200.

The various pipelines are not simply overlapped, but the high-temperature gas refrigerant, the low-temperature gas refrigerant, the cooling water and the chilled water in the air conditioning system are fully utilized to be combined with the air supply box 210 of the invention, so that the air is stably and adjustably supplied to the air supply tank 200.

In some embodiments, the disclosed embodiments provide a refrigeration system comprising an air supply system for a suspension bearing as described in any of the embodiments above.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the 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 supply system for a suspension bearing, comprising:

a compressor including a suspension bearing;

2. The gas supply system for a suspension bearing of claim 1, wherein the gas heating section comprises:

3. The gas supply system for a suspension bearing of claim 2, wherein a throttling assembly is provided on the high temperature gas line;

the throttle assembly includes:

4. The gas supply system for a suspension bearing of any of claims 1 to 3, wherein the adjustment assembly further comprises:

5. The gas supply system for a suspension bearing of claim 4, wherein the liquid heating section comprises:

6. The gas supply system for a suspension bearing of claim 4, wherein the liquid heating section further comprises:

a water tank filled with hot water;

7. The gas supply system for a suspension bearing according to any of claims 1 to 3, wherein the conditioning assembly further comprises a heat absorbing portion to transfer cold to the vaporized filling liquid to liquefy it.

8. The gas supply system for a suspension bearing of claim 7, wherein the heat sink portion comprises a liquid heat sink portion;

the liquid heat absorbing part includes:

9. The gas supply system for a suspension bearing of claim 7, wherein the heat sink portion further comprises a gas heat sink portion;

the gas heat absorption part includes:

10. A refrigeration system comprising an air supply system for a suspension bearing as claimed in any one of claims 1 to 9.