WO2023077810A1

WO2023077810A1 - Gas supply system for suspension bearing and refrigerating system

Info

Publication number: WO2023077810A1
Application number: PCT/CN2022/098793
Authority: WO
Inventors: 张晓锐; 陈远; 张捷; 邓善营; 王铁伟
Original assignee: 青岛海尔空调电子有限公司; 青岛海尔空调器有限总公司; 海尔智家股份有限公司
Priority date: 2021-11-08
Filing date: 2022-06-15
Publication date: 2023-05-11
Also published as: CN114087290A; CN114087290B

Abstract

A gas supply system for a suspension bearing, comprising: a compressor (100), a first circulating assembly, a second circulating assembly, and an adjusting assembly. The second circulating assembly comprises a gas supply tank (200) and a gas supply box (210); the gas supply box (210) comprises an outer cavity (212) and an inner cavity (211) arranged in the outer cavity (212), and there is filling fluid between the outer cavity (212) and the inner cavity (211); the inner cavity (211) takes gas from an evaporator (110) and/or a gas supply pipeline (131) and supplies the gas to the gas supply tank (200); the inner cavity (211) is a deformable cavity, and can take or supply gas when deformation occurs; and the adjusting assembly is used for changing the phase of the filling fluid so as to force the inner cavity (211) to deform. Also provided is a refrigerating system.

Description

Air supply system and refrigeration system for suspension bearings

This application is based on a Chinese patent application with application number 202111315669.6 and a filing date of November 8, 2021, and claims the priority of this Chinese patent application. The entire content of this Chinese patent application is hereby incorporated by reference into this application.

technical field

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

Background technique

The compressor is a key component in the field of air conditioning and refrigeration. The bearings of the compressor include oil-lubricated bearings and suspension bearings, and the suspension bearings include magnetic suspension bearings and air suspension bearings. The compressor using the suspension bearing does not need to use lubricating oil to lubricate the bearing, which avoids the mixing of lubricating oil and refrigerant to reduce the heat exchange efficiency of the air conditioning system. At the same time, the air suspension bearing needs to supply air to the bearing through a set of air supply system, so as to lubricate and support the rotor. Therefore, the stability of the air supply system is directly related to the performance of the compressor.

The prior art discloses an air supply system for suspension bearings. A newly added compressor is used to extract gaseous refrigerant from the upper part of the condenser, and after being compressed, it passes into the air supply tank. The air supply tank supplies air to the air suspension bearing of the compressor through the flow path.

In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art: the gas pressure is increased by adding a new compressor, although the gaseous refrigerant in the condenser can be supplied to the gas supply tank, but at the same time the gas supply tank The pressure in the tank increases sharply, making it impossible to supply gas stably to the tank. And adding a new compressor makes the control system more complex and costly.

Contents of the invention

In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is presented below. The summary is not intended to be an extensive overview nor to identify key/important elements or to delineate the scope of these embodiments, but rather serves as a prelude to the detailed description that follows.

Embodiments of the present disclosure provide an air supply system and a refrigeration system for suspension bearings, which solve the problem that the air supply system cannot stably supply air to the air supply tank.

In some embodiments, the air supply system for suspension bearings includes:

compressors, including suspension bearings;

The first circulation assembly includes a condenser and an evaporator connected to the condenser; the condenser communicates with the exhaust port of the compressor, and the evaporator communicates with the suction port of the compressor ;

The second circulation assembly includes an air supply tank and an air supply box; the air supply tank is communicated with the suspension bearing and used to supply air to it; the air supply box includes an outer cavity and an inner cavity arranged in the outer cavity chamber, and there is a filling liquid between the outer chamber and the inner chamber; the inner chamber takes air from the evaporator and/or the air supply line of the compressor, and supplies it to the air supply tank Gas; the inner cavity is a deformable cavity, and gas can be taken or supplied when deformation occurs;

The regulating component is used to change the phase of the filling liquid and force the inner cavity to deform; the regulating component includes a gas heating part, and the gas heating part transfers heat to the filling liquid through gas to vaporize it.

Optionally, the gas heating part includes:

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

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

The throttling assembly includes:

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

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

Optionally, the adjustment assembly also includes:

The liquid heating part is used for transferring heat to the filling liquid through the liquid to vaporize it.

Optionally, the liquid heating part includes:

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

Optionally, the liquid heating part further includes:

A water tank filled with hot water;

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

Optionally, the regulating assembly further includes a heat absorbing part, and the heat absorbing part is used to transfer cold energy to the vaporized filling liquid to liquefy it.

Optionally, the heat absorbing part comprises a liquid heat absorbing part;

The liquid heat absorbing part includes:

The cryogenic liquid pipeline is connected to the refrigerated water pipeline of the evaporator; at least part of the cryogenic liquid pipeline is located in the filling liquid, and is used for transferring cold energy to the vaporized filling liquid through the liquid.

Optionally, the heat absorption part also includes a gas heat absorption part;

The gas heat absorption part includes:

The low-temperature gas pipeline is connected to the evaporation pipeline of the evaporator; at least part of the low-temperature gas pipeline is located in the filling liquid, and is used to transfer heat and cold to the vaporized filling liquid through gas.

In some embodiments, the refrigeration system includes the air supply system for suspension bearings in any of the above embodiments.

The air supply system and refrigeration system for suspension bearings provided by the embodiments of the present disclosure can achieve the following technical effects:

The inner cavity obtains the 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 phase change of the filling liquid between the outer cavity and the inner cavity, a pressure difference is formed between the outer cavity and the inner cavity. When the inner cavity is full of gas, the filling liquid is vaporized by the gas heating part, so that the pressure of the outer cavity is greater than that of the inner cavity pressure. At this time, the gas in the outer cavity forces the inner cavity to deform and shrink, and at the same time, the gaseous refrigerant in the 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 lower than the pressure of the inner cavity, the inner cavity is no longer compressed and can continue to take air, and the inner cavity is deformed and expanded again while taking air. Such a reciprocating cycle stably supplies air to the air supply tank through the air supply box.

The foregoing general description and the following description are exemplary and explanatory only and are not intended to limit the application.

Description of drawings

One or more embodiments are exemplified by the corresponding drawings, and these exemplifications and drawings do not constitute a limitation to the embodiments, and elements with the same reference numerals in the drawings are shown as similar elements, The drawings are not limited to scale and in which:

Fig. 1 is a schematic diagram of an air supply system of 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 present disclosure;

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

Fig. 4 is an enlarged view of part A of Fig. 3;

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

Fig. 6 is a schematic diagram of another air supply system of a suspension bearing provided by an embodiment of the present disclosure.

Reference signs:

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

200: gas supply tank; 201: gas supply pipeline; 202: liquid supply pipeline; 210: gas supply box; 211: inner cavity; 212: outer cavity;

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

410: first solenoid valve; 411: expansion valve; 420: second solenoid valve; 430: third solenoid valve; 440: fourth solenoid valve; 450: fifth solenoid valve; 460: sixth solenoid valve; 470: first solenoid valve Seven solenoid valves; 480: the eighth solenoid valve; 490: the ninth solenoid valve; 491: the tenth solenoid valve;

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

Detailed ways

In order to understand the characteristics and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. The attached drawings are only for reference and description, and are not intended to limit the embodiments of the present disclosure. In the following technical description, 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 simplified in order to simplify the drawings.

The terms "first", "second" and the like in the description and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances so as to facilitate the embodiments of the disclosed embodiments described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the orientations or positional relationships indicated by the terms "upper", "lower", "inner", "middle", "outer", "front", "rear" etc. are based on the orientations or positional relationships shown in the drawings. Positional relationship. These terms are mainly used to better describe the embodiments of the present disclosure and their implementations, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation. Moreover, some of the above terms may be used to indicate other meanings besides orientation or positional relationship, for example, the term "upper" may also be used to indicate a certain attachment relationship or connection relationship in some cases. Those skilled in the art can understand the specific meanings of these terms in the embodiments of the present disclosure according to specific situations.

In addition, the terms "setting", "connecting" and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediary, or two devices, components or Internal connectivity between components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present disclosure according to specific situations.

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

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

The term "and/or" is an associative relationship describing objects, indicating that there can be three relationships. For example, A and/or B means: A or B, or, A and B, these three relationships.

It should be noted that, in the case of no conflict, the embodiments and the 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 communicates with the exhaust port of the compressor 100, and the condenser 120 passes through the economizer 130 and the throttling device Connected to the evaporator 110, the evaporator 110 is connected to the suction port of the compressor 100, the 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 The compressor 100 re-compresses, and thus circulates the refrigerant. Wherein, the condenser 120 conducts the heat generated by it to the outdoor for cooling through the cooling water pipeline; the evaporator 110 conducts the cold generated by it to the indoor cooling through the chilled water pipeline. Moreover, the compressor 100 communicates with the economizer 130 through the air supply pipeline 131 , and the economizer 130 can supply air to the compressor 100 through the air supply pipeline 131 .

As shown in FIGS. 1-6 , an embodiment of the present disclosure provides an air supply system for a suspension bearing, including a compressor 100 , a first circulation assembly, a second circulation assembly, and an adjustment assembly. Wherein, the compressor 100 includes a suspension bearing; the first circulation assembly includes a condenser 120 and an evaporator 110 connected to the condenser 120; the condenser 120 is connected to the exhaust port of the compressor 100, and the evaporator 110 is connected to The suction port is connected; the second circulation assembly includes an air supply tank 200 and an air supply box 210; the air supply tank 200 is communicated with the suspension bearing and is used to supply air to it; the air supply box 210 includes an outer cavity 212 and is arranged on the outer cavity 212 The inner chamber 211, and there is a filling liquid between the outer chamber 212 and the inner chamber 211; the inner chamber 211 takes air from the evaporator 110 and/or the gas supply pipeline 131, and supplies air to the air supply tank 200; the inner chamber 211 It is a deformable cavity, and when it deforms, it can take or supply gas; the adjustment component is used to change the phase of the filling liquid and then adjust the pressure difference between the outer cavity 212 and the inner cavity 211 to force the inner cavity 211 to deform; the adjustment component includes gas heating The gas heating part transfers heat to the filling liquid through gas to vaporize it.

Using the air supply system for suspension bearings provided by the embodiments of the present disclosure, the inner cavity 211 obtains 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 undergoes a phase change, a pressure difference is formed between the outer cavity 212 and the inner cavity 211. When the inner cavity 211 is filled with gas, the filling liquid is vaporized by the gas heating part, making the outer cavity The pressure of 212 is greater than the pressure of inner cavity 211 . At this time, the gas in the outer cavity 212 forces the inner cavity 211 to deform and shrink, and at the same time, the gaseous refrigerant in the cavity is supplied to the gas supply tank 200 , and finally the gas supply tank 200 supplies the gaseous refrigerant to the suspension bearing. When the pressure of the outer cavity 212 is lower than the pressure of the inner cavity 211, the inner cavity 211 is no longer compressed and can continue to take in air, and the inner cavity 211 deforms and expands again while taking in air. Such a reciprocating cycle stably supplies air to the air supply tank 200 through the air supply box 210 .

Optionally, as shown in FIG. 2 , the inner cavity 211 adopts a corrugated airbag. When the inner cavity 211 takes air, the corrugated airbag is gradually deformed and expanded; when the filling liquid is vaporized so that the pressure of the outer cavity 212 is greater than the pressure of the inner cavity 211, the gas forces the inner cavity 211 to deform and shrink, and at the same time, the refrigerant in the inner cavity 211 is supplied to the supply. Gas tank 200. Moreover, the corrugated airbag has a good heat insulation function to avoid heat exchange between the outer cavity 212 and the inner cavity 211.

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 inner cavity 211 .

Furthermore, optionally, the air supply tank 200 is provided with a second pressure sensor. The second pressure sensor is used to monitor the pressure of the air supply tank 200 .

In some embodiments, the outer chamber 212 obtains liquid refrigerant from the evaporator 110 as the filling liquid, or, the outer chamber 212 obtains the liquid refrigerant from the condenser 120 as the filling liquid, or, the outer chamber 212 obtains the liquid refrigerant from the evaporator 110 and the condenser 120 simultaneously. Obtain liquid refrigerant as the charge fluid.

Optionally, as shown in FIG. 1 , the outer chamber 212 simultaneously obtains liquid refrigerant from the evaporator 110 and the condenser 120 through a liquid extraction line, and the liquid extraction line includes a main pipe section, a first branch pipe section and a second branch pipe section. The inlet of the first branch pipe section is connected to the evaporator 110, the inlet of the second branch pipe section is connected to the condenser 120, the outlet of the first branch pipe section and the outlet of the second branch pipe section are connected to the inlet of the main pipe section, and the outlet of the main pipe section is connected to the External cavity 212 . In this way, the liquid refrigerant in the evaporator 110 can enter the outer chamber 212 sequentially through the first branch pipe section and the main pipe section, and the liquid refrigerant in the condenser 120 can enter the outer chamber 212 through the second branch pipe section and the main pipe section sequentially.

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 one-way valve 510 . In this way, by controlling the states of the second solenoid valve 420 and the third solenoid valve 430 , the outer chamber 212 can take liquid from the evaporator 110 or the condenser 120 , or take liquid from the evaporator 110 and the condenser 120 at the same time. The filling liquid in the outer chamber 212 can be prevented from flowing back into the evaporator 110 and the condenser 120 by the first one-way valve 510 .

In some embodiments, the evaporator 110 communicates with the inner chamber 211 through the fourth solenoid valve 440 and the second one-way valve 520 in sequence. When the fourth solenoid valve 440 is in an open state, the inner chamber 211 can obtain gaseous refrigerant from the evaporator 110 . The conduction direction of the second one-way valve 520 is limited to lead from the evaporator 110 to the inner chamber 211 , so as to prevent the gas in the inner chamber 211 from flowing back into the evaporator 110 .

In some embodiments, the air supply pipeline 131 communicates with the inner cavity 211 through the fifth solenoid valve 450 and the third one-way valve 530 in sequence. When the fifth electromagnetic valve 450 is in an open state, the inner cavity 211 can obtain gaseous refrigerant from the supplementary gas pipeline 131 . The conduction direction of the third one-way valve 530 is limited to lead from the gas supply pipeline 131 to the inner cavity 211 , so as to prevent the gas in the inner cavity 211 from flowing back into the gas supply pipeline 131 .

When the compressor 100 is started, the pressure of the air supply pipeline 131 is greater 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 chamber 211 takes air from the air supply pipeline 131 preferentially. In this way, the pressure supplied from the inner chamber 211 to the air supply tank 200 is relatively high, thereby improving the effect of the air supply tank 200 supplying air to the air suspension bearing.

In some embodiments, the gas heating section includes a high temperature gas line 300 . One end of the high-temperature gas pipeline 300 is connected to the exhaust port, and the other end is connected to the evaporator 110; at least part of the high-temperature gas pipeline 300 is located in the filling liquid. The high-temperature and high-pressure gas discharged from the compressor 100 enters the evaporator 110 through the high-temperature gas pipeline 300, and when the gas passes through the section of the high-temperature gas pipeline 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 inner chamber 211 is compressed and deformed to shrink, and at the same time, the gaseous refrigerant in the chamber is supplied to the gas supply tank 200 .

Optionally, a throttling assembly is provided on the high-temperature gas pipeline 300 ; the throttling assembly includes an expansion valve 411 and a first solenoid valve 410 . Among them, the expansion valve 411 is arranged on the pipe section of the high-temperature gas pipeline 300 between the filling liquid and the evaporator 110; the first solenoid valve 410 is arranged on the pipe section of the high-temperature gas pipeline 300 between the filling liquid and the exhaust port superior. When the first electromagnetic valve 410 is open, the high temperature and high pressure gas discharged from the compressor 100 can flow to the evaporator 110 through the high temperature gas pipeline 300 . The high-temperature gas in the high-temperature gas pipeline 300 is liquefied after exchanging heat with the filling liquid, and flows to the evaporator 110 after being throttled by the expansion valve 411 .

In some embodiments, the adjustment assembly further includes a liquid heating part, which is used to transfer heat from the liquid to the filling liquid to vaporize it.

Optionally, as shown in FIG. 5 , the liquid heating part includes a first high-temperature liquid pipeline 310 . The first high-temperature liquid pipeline 310 communicates with the cooling water pipeline of the condenser 120 , and at least part of the first high-temperature liquid pipeline 310 is located in the filling liquid. After the cooling water in the cooling water pipeline exchanges heat with the high-temperature and high-pressure gaseous refrigerant in the condenser 120, the temperature of the cooling water rises. When the high-temperature cooling water passes through the section of the first high-temperature liquid pipeline 310 located in the filling liquid, it transfers heat to the filling liquid and vaporizes the filling liquid. The thermal energy of the cooling water is fully utilized.

Further, optionally, the first high-temperature liquid pipeline 310 is provided with a sixth single solenoid valve. When the sixth electromagnetic valve 460 is opened, high-temperature cooling water circulates in the first high-temperature liquid pipeline 310 .

In some embodiments, as shown in FIG. 3 and FIG. 4 , the liquid heating part further includes a water tank 321 and a second high-temperature liquid pipeline 320 . Wherein, the inside of the water tank 321 is filled with hot water; the second high-temperature liquid pipeline 320 communicates with the water tank 321, and at least 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 . Moreover, the heating rate of the liquid can be adjusted by controlling the power of the electric heater 322 , so as to speed up or slow down the gasification rate of the phase change of the filling liquid, and then adjust the rate of gas supply from the inner chamber 211 to the gas supply tank 200 . For example, the pressure in the air supply tank 200 is relatively high, and the inner cavity 211 only needs to slowly supply air to the air supply tank 200 to meet the requirements of the air supply system. At this time, the power of the electric heater 322 is reduced to keep the temperature of the liquid in the second high-temperature liquid pipeline 320 low, so that the vaporization rate of the filling liquid decreases. The time for the inner cavity 211 to exhaust gas is prolonged, and the inner cavity 211 exhausts the air to the air supply tank 200 at a slower rate.

Further, optionally, the second high-temperature liquid pipeline 320 is provided with a seventh solenoid valve 470 . When the seventh solenoid valve 470 is opened, the high-temperature liquid circulates in the second high-temperature liquid pipeline 320 .

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

In some embodiments, the regulating assembly further includes a heat absorbing part, which is used to transfer cooling energy to the vaporized filling liquid to liquefy it. When the vaporized filling liquid is liquefied again, the pressure in the outer cavity 212 decreases, and the inner cavity 211 is no longer compressed and can continue to take air and expand.

Optionally, the heat absorbing part includes a liquid heat absorbing part; the liquid heat absorbing part includes a low-temperature liquid pipeline 330, and the low-temperature liquid pipeline 330 is connected to the chilled water pipeline of the evaporator 110; at least part of the low-temperature liquid pipeline 330 is located in the filling liquid , used to transfer cold energy through the liquid to the vaporized filling liquid. After the chilled water in the chilled water pipeline exchanges heat with the low-temperature and low-pressure gaseous refrigerant in the evaporator 110 , the temperature of the chilled water decreases. When the low-temperature frozen water passes through the section of the low-temperature liquid pipeline 330 located in the filling liquid, it transfers cooling energy to the filling liquid and re-liquefies the vaporized filling liquid. The cooling energy of chilled water is fully utilized.

Further, optionally, the cryogenic liquid pipeline 330 is provided with an eighth solenoid valve 480 . When the eighth solenoid valve 480 is opened, the low-temperature liquid circulates in the low-temperature liquid pipeline 330 .

Optionally, the heat absorbing part also includes a gas heat absorbing part; the gas heat absorbing part includes a low-temperature gas pipeline, and the low-temperature gas pipeline is connected to the evaporation pipeline of the evaporator 110; at least part of the low-temperature gas pipeline is located in the filling liquid, used To transfer heat and cold to the vaporized filling liquid through the gas. When the low-temperature gaseous refrigerant in the evaporating pipeline passes through the low-temperature gas pipeline and passes through the section of the low-temperature gas pipeline located in the filling liquid, it transfers cooling energy to the filling liquid and re-liquefies the vaporized filling liquid. The low-temperature gaseous refrigerant in the evaporation pipeline can lower the indoor temperature and at the same time adjust the air pressure of the outer cavity 212 .

In some embodiments, the inner chamber 211 communicates with the gas supply tank 200 through the ninth solenoid valve 490 and the fourth one-way valve 540 in sequence. When the ninth solenoid valve 490 is in an open state, the inner cavity 211 can supply the gaseous refrigerant to the gas supply tank 200 . The conduction direction of the fourth one-way valve 540 is limited to lead from the inner cavity 211 to the gas supply tank 200 , so as to prevent the gas in the gas supply tank 200 from flowing back into the inner cavity 211 .

In some embodiments, as shown in FIG. 6 , the air supply tank 200 communicates with the air suspension bearing of the compressor 100 through an air supply pipeline 201 . The fifth one-way valve 550 is provided on the air supply pipeline 201, and the conduction direction of the fifth one-way valve 550 is limited to lead from the air supply tank 200 to the air suspension bearing, which can prevent the gaseous refrigerant in the air suspension bearing from flowing back to the air supply. Inside the tank 200.

Optionally, the gas supply pipeline 201 communicates with the evaporator 110 or the condenser 120 through the liquid supply pipeline 202 . The evaporator 110 or the condenser 120 supplies liquid to the liquid supply pipeline 202, and the liquid in the liquid supply pipeline 202 enters the gas supply pipeline 201 and mixes with the gas from the gas supply tank 200 to form a gas-liquid two-phase medium. After the gas-liquid two-phase medium enters the flow channel in the air suspension bearing, it becomes a gaseous refrigerant after throttling and heat absorption.

Further, optionally, the liquid supply pipeline 202 communicates with the gas supply pipeline 201 through the tenth electromagnetic valve 491 and the sixth one-way valve 560 in sequence. When the tenth electromagnetic valve 491 is opened, the liquid supply pipeline 202 can supply liquid refrigerant to the air supply pipeline 201 . The conduction direction of the sixth one-way valve 560 is limited to lead from the liquid supply pipeline 202 to the gas supply pipeline 201, which can prevent the gas in the gas supply pipeline 201 from flowing to the liquid supply pipeline 202.

Furthermore, optionally, a third pressure sensor is provided on the liquid supply pipeline 202 . The third pressure sensor is used to monitor the pressure of the liquid supply pipeline 202 . Here, the pressure of the liquid supply pipeline 202 can be adjusted by controlling the opening of the ninth solenoid valve 490 , so that the pressure of the liquid supply pipeline 202 is consistent with the pressure of the gas supply tank 200 .

Here, the air supply control process of the air supply system for suspension bearings is described in conjunction with Figure 1:

Step 1: Control the opening of the fourth electromagnetic valve 440, and the inner cavity 211 obtains the gaseous refrigerant from the evaporator 110; Gradually deform and expand after gas;

Step 2: After the inner chamber 211 is filled with the gaseous refrigerant, the first electromagnetic 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. After the filling liquid is vaporized, the pressure of the outer cavity 212 is greater than that of the inner cavity 211, and the gas in the outer cavity 212 forces the deformation of the inner cavity 211 to shrink;

Step 3: Control the opening of the ninth solenoid valve 490, and squeeze the gaseous refrigerant in the cavity to the gas supply tank 200 while the inner cavity 211 deforms and shrinks;

Step 4: After the gaseous refrigerant in the inner cavity 211 is emptied, the eighth solenoid valve 480 is controlled to open and the first solenoid valve 410 is closed, and the cryogenic liquid pipeline 330 is turned on. The chilled water exchanges heat with the vaporized filling liquid. After the vaporized filling liquid is re-liquefied, the pressure difference between the inner cavity 211 and the outer cavity 212 gradually disappears, and the inner cavity 211 is no longer squeezed by the gas in the outer cavity 212. At this time, the inner cavity The cavity 211 can continue to take air and expand.

It should be noted that in step 2, 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 both or all of them may be connected simultaneously. In Step 4, only one of the cryogenic liquid pipeline 330 and the cryogenic gas pipeline may be connected, or both may be connected simultaneously. Thus, the rate at which the inner cavity 211 supplies the air to the air supply tank 200 is adjusted.

Exemplarily, when the temperature of the gas in the high-temperature gas pipeline 300 is lower than 45°C, 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 open, so that the high-temperature gas pipeline 300 and the The second high-temperature liquid pipeline 320 is conducted synchronously. At this time, the gasification rate of the filling liquid is accelerated, and the time for the inner cavity 211 to supply gas to the gas supply tank 200 is shortened.

In yet another example, when the gas temperature in the high-temperature gas pipeline 300 is lower than 35°C, 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 simultaneously. Open, so that the high-temperature gas pipeline 300, the first high-temperature liquid pipeline 310 and the second high-temperature liquid pipeline 320 are simultaneously conducted. Thus, the rate at which the inner chamber 211 supplies the air to the air supply tank 200 is further improved.

Moreover, the arrangement of the above-mentioned various pipelines is not simply superimposed, but makes full use of the high-temperature gas refrigerant, low-temperature gas refrigerant, cooling water, and frozen water in the air-conditioning system for combined application with the air supply box 210 of the present invention, thereby stabilizing and The gas supply tank 200 is regulatedly supplied with gas.

In some embodiments, an embodiment of the present disclosure provides a refrigeration system, which includes the air supply system for a suspension bearing described in any of the above embodiments.

The above description and drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural and other changes. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. 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

An air supply system for a suspension bearing, characterized in that it comprises:

compressors, including suspension bearings;

The first circulation assembly includes a condenser and an evaporator connected to the condenser; the condenser communicates with the exhaust port of the compressor, and the evaporator communicates with the suction port of the compressor ;

The second circulation assembly includes an air supply tank and an air supply box; the air supply tank is communicated with the suspension bearing and used to supply air to it; the air supply box includes an outer cavity and an inner cavity arranged in the outer cavity chamber, and there is a filling liquid between the outer chamber and the inner chamber; the inner chamber takes air from the evaporator and/or the air supply line of the compressor, and supplies it to the air supply tank Gas; the inner cavity is a deformable cavity, and gas can be taken or supplied when deformation occurs;

The regulating component is used to change the phase of the filling liquid and force the inner cavity to deform; the regulating component includes a gas heating part, and the gas heating part transfers heat to the filling liquid through gas to vaporize it.
The gas supply system for suspension bearings according to claim 1, wherein the gas heating part comprises:

A high-temperature gas pipeline, one end of which communicates with the exhaust port and the other end communicates with the evaporator; at least part of the high-temperature gas pipeline is located in the filling liquid.
The air supply system for suspension bearings according to claim 2, wherein a throttling assembly is arranged on the high-temperature gas pipeline;

The throttling assembly includes:

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

The first electromagnetic valve is arranged on the pipe section of the high-temperature gas pipeline between the filling liquid and the exhaust port.
The air supply system for suspension bearings according to any one of claims 1 to 3, wherein the adjustment assembly further includes:

The liquid heating part is used for transferring heat to the filling liquid through the liquid to vaporize it.
The air supply system for suspension bearings according to claim 4, wherein the liquid heating part comprises:

The first high-temperature liquid pipeline communicates with the cooling water pipeline of the condenser, and at least part of the first high-temperature liquid pipeline is located in the filling liquid.
The air supply system for suspension bearings according to claim 4, wherein the liquid heating part further comprises:

A water tank filled with hot water;

The second high-temperature liquid pipeline communicates with the water tank, and at least part of the second high-temperature liquid pipeline is located in the filling liquid.
The air supply system for suspension bearings according to any one of claims 1 to 3, wherein the regulating assembly further includes a heat absorbing part, and the heat absorbing part is used to supply the vaporized filling liquid Transfer cold to liquefy it.
The air supply system for a suspension bearing according to claim 7, wherein the heat absorbing part comprises a liquid heat absorbing part;

The liquid heat absorbing part includes:

The cryogenic liquid pipeline is connected to the refrigerated water pipeline of the evaporator; at least part of the cryogenic liquid pipeline is located in the filling liquid, and is used for transferring cold energy to the vaporized filling liquid through the liquid.
The gas supply system for suspension bearings according to claim 7, wherein the heat absorbing part further comprises a gas heat absorbing part;

The gas heat absorption part includes:

The low-temperature gas pipeline is connected to the evaporation pipeline of the evaporator; at least part of the low-temperature gas pipeline is located in the filling liquid, and is used to transfer heat and cold to the vaporized filling liquid through gas.
A refrigeration system, characterized by comprising the air supply system for suspension bearings according to any one of claims 1 to 9.