CN113833762A - Air supply system and refrigerating system for suspension bearing - Google Patents
Air supply system and refrigerating system for suspension bearing Download PDFInfo
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- CN113833762A CN113833762A CN202111050890.3A CN202111050890A CN113833762A CN 113833762 A CN113833762 A CN 113833762A CN 202111050890 A CN202111050890 A CN 202111050890A CN 113833762 A CN113833762 A CN 113833762A
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- 239000003507 refrigerant Substances 0.000 claims abstract description 75
- 239000007788 liquid Substances 0.000 claims abstract description 69
- 230000008859 change Effects 0.000 claims abstract description 13
- 238000004891 communication Methods 0.000 claims abstract description 12
- 238000005057 refrigeration Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 101
- 238000012544 monitoring process Methods 0.000 claims description 27
- 238000010438 heat treatment Methods 0.000 claims description 18
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- 230000005494 condensation Effects 0.000 claims 2
- 238000009833 condensation Methods 0.000 claims 2
- 238000007667 floating Methods 0.000 description 5
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0629—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion
- F16C32/064—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion the liquid being supplied under pressure
- F16C32/0644—Details of devices to control the supply of liquids to the bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0629—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
Abstract
The application relates to the technical field of refrigeration, discloses an air feed system for suspension bearing, includes: 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 the inner cavity is a deformable cavity; the evaporator is communicated with the air supply tank through the inner cavity, and the inner cavity acquires a gaseous refrigerant from the evaporator; liquid is filled between the outer cavity and the inner cavity; and the pressure difference between the outer cavity and the inner cavity is adjusted through the phase change of the liquid, so that the inner cavity is forced to deform, and the air is supplied to the air supply tank through the inner cavity. The present application further discloses a refrigeration system.
Description
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
At present, a gas suspension compressor adopts a suspension bearing, and gas or gas liquid is supplied into the suspension bearing through a gas supply system, so that the rotor is supported. The prior art discloses an air supply system for a suspension bearing, which directly obtains a gaseous refrigerant from an evaporator or a condenser through a communication flow path, and introduces the gaseous refrigerant into the suspension bearing of a compressor, so that a rotor is suspended in the suspension bearing.
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 gaseous refrigerant is directly obtained from the evaporator or the condenser and is supplied to the suspension bearing, and the gas supply system is unstable, so that the reliability of the gas suspension compressor is affected.
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 of instability of the air supply system.
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 the inner cavity is a deformable cavity;
the evaporator is communicated with the air supply tank through the inner cavity, and the inner cavity acquires a gaseous refrigerant from the evaporator; liquid is filled between the outer cavity and the inner cavity;
and the pressure difference between the outer cavity and the inner cavity is adjusted through the phase change of the liquid, so that the inner cavity is forced to deform, and the air is supplied to the air supply tank through the inner cavity.
Optionally, the liquid is evaporated to change phase into gas by the heating part.
Optionally, the heating part includes:
a water tank filled with hot water;
the hot water pipeline is communicated with the water tank, and part or all of the hot water pipeline is positioned in the liquid; and the section of the hot water pipeline located in the liquid is made of a heat conducting material.
Optionally, the gas is condensed by a condensing part to change into the liquid.
Optionally, the condensing part includes a cold water pipeline, and the cold water pipeline is filled with chilled water;
part or all of the cold water pipeline is positioned in the gas, and the pipe section of the cold water pipeline positioned in the gas is made of heat conducting materials.
Optionally, the outer chamber obtains liquid refrigerant from the evaporator and/or the condenser as the liquid.
Optionally, the first circulation assembly further comprises an economizer, the condenser is communicated with the evaporator through the economizer, and the economizer is communicated with an air supplement port of the compressor through an air supplement pipeline;
the inner cavity is communicated with the air supplement pipeline so as to obtain gaseous refrigerant from the air supplement pipeline.
Optionally, the gas supply system for the suspension bearing further comprises a gas pressure monitoring assembly, wherein the gas pressure monitoring assembly is used for monitoring the gas pressure value of the inner cavity and/or the gas in the gas supply tank.
Optionally, the gas supply system for the suspension bearing further includes a temperature monitoring assembly, and the temperature monitoring assembly is used for monitoring a temperature value of the water tank and/or the outer cavity.
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 low-temperature and low-pressure gaseous refrigerant from the evaporator, and the inner cavity is deformed and expanded after being filled with the gaseous refrigerant. Then, after the liquid in the outer cavity is changed into the gaseous state, pressure difference is formed between the outer cavity and the inner cavity, under the condition that the air pressure of the outer cavity is larger than that of the inner cavity, the gas in the outer cavity forces the inner cavity to deform and shrink, the gaseous refrigerant in the inner cavity is supplied to the gas supply tank while the inner cavity shrinks, and finally the gas supply tank supplies the gaseous refrigerant to the suspension bearing. Thus, compared with an air supply system which directly takes air from an evaporator or a condenser to the suspension bearing, the system is more stable and reliable.
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 an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic diagram of an internal heat pipe section and an internal cold pipe section provided by an embodiment of the disclosure;
FIG. 4 is a schematic view of an air supply system for another suspension bearing provided by embodiments of the present disclosure;
FIG. 5 is a schematic view of an alternative air supply system for a suspension bearing provided by embodiments 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; 210: a gas supply tank; 211: an inner cavity; 212: an outer cavity; 300: a water tank; 310: an electric heater; 320: a hot water pipeline; 321: a built-in heat pipe section; 330: a cold water line; 331: a cold pipe section is arranged inside;
410: a first solenoid 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;
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;
p1: a first air pressure sensor; p2: a second air pressure sensor.
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 compressor refrigeration system generally includes a compressor 100, a condenser 120, a capillary tube 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 capillary tube, the evaporator 110 is communicated with an air suction port of the compressor 100, a refrigerant discharged from the exhaust port of the compressor 100 passes through the condenser 120, the capillary tube and the evaporator 110 in sequence, and finally returns to the compressor 100 and is recompressed, thus performing a refrigerant cycle. The refrigerant is compressed by the compressor 100 to become a high-temperature high-pressure gaseous refrigerant, the high-temperature high-pressure gaseous refrigerant enters the condenser 120 to become a high-temperature high-pressure liquid refrigerant and flows to the capillary tube, the high-temperature high-pressure liquid refrigerant passes through the capillary tube to become a low-temperature low-pressure liquid refrigerant and flows to the evaporator 110, the low-temperature low-pressure liquid refrigerant enters the evaporator 110 to become a low-temperature low-pressure gaseous refrigerant and flows back to the compressor 100, and the refrigerant evaporates and absorbs heat in the evaporator 110 to realize a refrigeration function.
The gas suspension compressor adopts a suspension bearing, the suspension bearing comprises a gas suspension bearing or a gas-liquid suspension bearing, the gas suspension bearing utilizes a gas film formed by gas extrusion to support a rotor to achieve the supporting and lubricating effects, the gas-liquid suspension bearing utilizes a gas-liquid film formed by gas and liquid extrusion to support the rotor to achieve the supporting and lubricating effects, the suspension bearing is low in friction loss, high in high-temperature resistance, simple in structure and high in rotation precision, and is considered to be an ideal supporting component under high-speed operation and high-temperature working conditions. Whether the gas suspension compressor adopts a gas suspension bearing or a gas-liquid suspension bearing, a set of gas supply system is needed to supply gas into the suspension bearing.
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, and a second circulation 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 air supply box 210 comprises an outer cavity 212 and an inner cavity 211 arranged in the outer cavity 212, and the inner cavity 211 is a deformable cavity; the evaporator 110 is connected to the gas supply tank 200 through an inner cavity 211, and the inner cavity 211 obtains a gaseous refrigerant from the evaporator 110; the outer cavity 212 and the inner cavity 211 are filled with liquid; the pressure difference between the outer chamber 212 and the inner chamber 211 is adjusted by the phase change of the liquid to force the inner chamber 211 to be deformed so that the inner chamber 211 supplies gas to the gas supply tank 200.
By adopting the air supply system for the suspension bearing provided by the embodiment of the disclosure, the inner cavity 211 obtains low-temperature and low-pressure gaseous refrigerant from the evaporator 110, and the inner cavity 211 is deformed and expanded after being filled with the gaseous refrigerant. Then, when the liquid in the outer chamber 212 changes to a gaseous state, a pressure difference is formed between the outer chamber 212 and the inner chamber 211, and when the gas pressure of the outer chamber 212 is greater than that of the inner chamber 211, the gas in the outer chamber 212 forces the inner chamber 211 to deform and shrink, the gaseous refrigerant in the inner chamber is supplied to the gas supply tank 200 while the inner chamber 211 shrinks, and finally the gas supply tank 200 supplies the gaseous refrigerant to the suspension bearing. Thus, the system is more stable and reliable compared with a system for supplying air directly from the evaporator 110 or the condenser 120 to the suspension bearings.
Alternatively, the lumen 211 may be a bellows balloon. When the inner cavity 211 obtains gaseous refrigerant from the evaporator 110, the corrugated airbag is inflated to gradually deform and expand; when a pressure difference is formed between the outer chamber 212 and the inner chamber 211 is forcibly deformed and reduced by the gas in the outer chamber 212, the refrigerant in the inner chamber 211 is supplied to the gas supply tank 200. In addition, the corrugated air bag has a good heat insulation function, and heat exchange between the outer cavity and the inner cavity is avoided.
Alternatively, as shown in fig. 1, the gas supply tank 200 is communicated with the suspension bearing of the compressor 100 through a fourth check valve 540, and the fourth check valve 540 allows the gaseous refrigerant to flow from the gas supply tank 200 to the suspension bearing. This prevents the gaseous refrigerant in the floating bearing from flowing back into gas supply tank 200.
Optionally, the evaporator 110 is connected to the inner cavity 211 through a first solenoid valve 410. Thus, the cavity 211 can receive the gaseous refrigerant from the evaporator 110 when the first solenoid valve 410 is in the open state.
Further, the first solenoid valve 410 is connected to the inner cavity 211 through a first check valve 510, and the first check valve 510 allows the gaseous refrigerant to flow from the evaporator 110 to the inner cavity 211. Thus, the gaseous refrigerant in the cavity 211 can be prevented from flowing back to the evaporator 110.
Optionally, a first pressure sensor P1 is disposed in the inner cavity 211, and the first pressure sensor P1 is used for monitoring the pressure inside the inner cavity 211.
Alternatively, the inner chamber 211 communicates with the gas supply tank 200 through a second solenoid valve 420. Thus, when the second solenoid valve 420 is in an open state, the gaseous refrigerant in the inner chamber 211 may flow to the supply tank 200.
Further, the second solenoid valve 420 is connected to the gas supply tank 200 through a second check valve 520, and the second check valve 520 allows the gaseous refrigerant to flow from the inner chamber 211 to the gas supply tank 200. This prevents the gaseous refrigerant of gas supply tank 200 from flowing back into inner cavity 211.
In some embodiments, the first solenoid valve 410, the second solenoid valve 420, and the first air pressure sensor P1 are all electrically connected to the air supply controller, the first air pressure sensor P1 communicates a monitored air pressure signal to the air supply controller, and the air supply controller controls the state of the first solenoid valve 410 and the second solenoid valve 420 according to the air pressure signal.
For example, when the first pressure sensor P1 detects that the pressure in the cavity 211 is zero, that is, the gaseous refrigerant in the cavity 211 is completely exhausted, the air supply controller controls the first solenoid valve 410 to open and the second solenoid valve 420 to close, and the cavity 211 can take air from the evaporator 110; when the first pressure sensor P1 detects that the air pressure in the inner cavity 211 reaches the full air pressure of the inner cavity 211, the air supply controller controls the first solenoid valve 410 to close and the second solenoid valve 420 to open, at this time, the inner cavity 211 can be forced to deform and shrink by the pressure difference between the air in the outer cavity 212 and the air in the inner cavity 211, so that the inner cavity 211 supplies air to the air supply tank 200.
In some embodiments, as shown in fig. 4, the outer chamber 212 receives liquid refrigerant from the evaporator 110 as a liquid, or the outer chamber 212 receives liquid refrigerant from the condenser 120 as a liquid, or the outer chamber 212 receives liquid refrigerant from both the evaporator 110 and the condenser 120 as a liquid.
Optionally, the evaporator 110 is in communication with the outer chamber 212 via a third solenoid valve 430. With the third solenoid valve 430 open, the outer chamber 212 may draw liquid refrigerant from the evaporator 110.
Further, optionally, the third solenoid valve 430 is connected to the outer chamber 212 through a third check valve 530, and the third check valve 530 allows the liquid refrigerant to flow from the evaporator 110 to the outer chamber 212. Thus, the liquid refrigerant in the outer chamber 212 can be prevented from flowing back into the evaporator 110.
Optionally, the condenser 120 is in communication with the outer chamber 212 via a fourth solenoid valve 440. With the fourth solenoid valve 440 in the open position, the outer chamber 212 may draw liquid refrigerant from the condenser 120.
In some embodiments, the evaporator 110 obtains liquid refrigerant from both the evaporator 110 and the condenser 120 via a liquid extraction line, which 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 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 cavity 212 through the first branch pipe section and the main pipe section, and simultaneously, the liquid refrigerant in the condenser 120 may sequentially enter the outer cavity 212 through the second branch pipe section and the main pipe section.
Further, optionally, as shown in fig. 5, the first branch pipe section is provided with a third solenoid valve 430, the second branch pipe section is provided with a fourth solenoid valve 440, and the main pipe section is provided with a third check valve 530. Thus, by controlling the states of the third solenoid valve 430 and the fourth solenoid valve 440, the outer chamber 212 may draw liquid refrigerant from the evaporator 110 or the condenser 120, or from both the evaporator 110 and the condenser 120. The liquid refrigerant in the outer chamber 212 is prevented from flowing back to the evaporator 110 and the condenser 120 by the third check valve 530.
In some embodiments, the liquid is vaporized to change phase into a gas by the heating portion. The heating part can heat the temperature of the liquid between the outer cavity 212 and the inner cavity 211, so that under the action of the heating part, the liquid is evaporated and changed into gas, and the gas pressure in the outer cavity 212 is increased; meanwhile, under the continuous heating action of the heating part, the temperature of the gas in the outer cavity 212 is gradually increased, so that the gas pressure in the outer cavity 212 is further increased.
Optionally, the heating part includes a water tank 300 and a hot water pipe 320. Wherein, the water tank 300 is filled with hot water; the hot water pipe 320 is communicated with the water tank 300, and part or all of the hot water pipe 320 is positioned in the liquid in the outer cavity 212; and the section of the hot water line 320 located in the liquid in the outer chamber 212 is made of a thermally conductive material. Thus, when hot water flows through the hot water line 320 and flows through the liquid-containing tube section of the hot water line 320, heat is exchanged between the hot water in the hot water line 320 and the liquid in the outer chamber 212 due to the heat conductive material of the tube section, thereby heating the liquid to evaporate and change phase into gas.
Further, optionally, the water tank 300 prepares hot water by a heating device. The heating apparatus includes an electric heater 310 disposed in the water tank 300, the electric heater 310 is capable of heating water in the water tank 300 when being powered on, and the temperature of the hot water can be adjusted by controlling the power of the electric heater 310, thereby accelerating or decelerating the phase change vaporization rate of the liquid in the outer chamber 212, and further adjusting the rate of supplying air to the air supply tank 200 by the inner chamber 211. For example, if the electric heater 310 is controlled to operate at 50% power, the water in the hot water line 320 increases in temperature at a slower rate, the vaporization rate of the liquid in the outer chamber 212 decreases, the gas pressure in the outer chamber 212 increases at a slower rate, and thus the inner chamber 211 is supplied to the gas supply tank 200 at a slower rate under the pressure of the gas in the outer chamber 212.
It is understood that the type of the heating apparatus for heating the water tank 300 is not limited to the above-mentioned electric heater 310, and other types of heating apparatuses capable of directly or indirectly heating the water tank 300 in the related art may also apply the technical solution of the present application and are included in the scope of the present application.
Optionally, as shown in fig. 3, the hot water pipeline 320 is formed by sequentially communicating a hot water outlet pipe section, an internal heat pipe section 321, and a hot water return pipe section, wherein the hot water outlet pipe section is communicated with a water outlet of the water tank 300, the internal heat pipe section 321 is located in the liquid of the outer cavity 212 and is made of a heat conductive material, and the water return pipeline is communicated with a water return port of the water tank 300. The hot water in the tank 300 flows out of the hot outlet pipe segment, then enters the built-in hot pipe segment 321 and exchanges heat with the liquid in the outer chamber 212, and finally flows back into the tank 300 from the hot return pipe segment.
Further, optionally, the hot water outlet pipe section is provided with a fifth solenoid valve 450, and when the fifth solenoid valve 450 is in an open state, the water in the water tank 300 can circulate in the hot water pipe 320.
Further, the heat conducting material used for the internal heat pipe section 321 may optionally include stainless steel, copper, aluminum, and other heat conducting metals.
In some embodiments, the gas is condensed by the condensing portion to change phase to a liquid. The liquid in the outer cavity 212 is heated and evaporated by the heating part and then is changed into gas, as the air pressure in the outer cavity 212 gradually increases, a pressure difference is formed between the outer cavity 212 and the inner cavity 211, and the gas in the outer cavity 212 forces the inner cavity 211 to deform and shrink and simultaneously supplies the gaseous refrigerant in the inner cavity to the gas supply tank 200; when the gaseous refrigerant in the inner cavity 211 is exhausted, the gas in the outer cavity 212 is condensed and liquefied by the condensing part, and the pressure difference between the outer cavity 212 and the inner cavity 211 is gradually eliminated along with the gradual phase change of the gas into liquid, so that the inner cavity 211 is not squeezed by the gas in the outer cavity 212 any more, and the inner cavity 211 can obtain the gaseous refrigerant from the evaporator 110 at this time.
Optionally, the condensing part includes a cold water pipe 330, and the cold water pipe 330 is filled with chilled water; some or all of the cold water line 330 is located in the gas between the outer chamber 212 and the inner chamber 211, and the section of the cold water line 330 located in the gas is made of a thermally conductive material. Thus, as the chilled water flows through the section of the cold water line 330 that is located in the gas between the outer chamber 212 and the inner chamber 211, heat is exchanged between the chilled water in the cold water line 330 and the gas due to the fact that this section is made of a thermally conductive material, thereby reducing the temperature of the gas and causing the condensed phase of the gas to change to a liquid state.
Further, optionally, the cold water line 330 is connected to the chilled water line of the evaporator 110. The cold water pipeline 330 is formed by sequentially communicating a cold water outlet pipe section, a built-in cold pipe section 331 and a cold water return pipe section, wherein the cold water outlet pipe section and the cold water return pipe section are both communicated with the chilled water pipeline, and the built-in cold pipe section 331 is located in the gas between the outer cavity 212 and the inner cavity 211 and is made of heat conducting materials. The chilled water in the chilled water line of the evaporator 110 first enters the cold outlet pipe section, then enters the built-in cold pipe section 331 and exchanges heat with the gas, and finally flows back to the chilled water line from the cold return pipe section.
Further, optionally, the cold water outlet pipe section is provided with a sixth solenoid valve 460, and when the sixth solenoid valve 460 is in an open state, the chilled water in the chilled water pipeline may circulate in the cold water pipeline 330.
Further, optionally, the heat conducting material used for the built-in cold pipe section 331 includes heat conducting metals such as stainless steel, copper, aluminum, and the like.
In some embodiments, the fifth solenoid valve 450, the sixth solenoid valve 460, and the first pressure sensor P1 are electrically connected to a gas supply controller, and the first pressure sensor P1 transmits a monitored pressure signal from the interior chamber 211 to the gas supply controller, which controls the state of the fifth solenoid valve 450 and the sixth solenoid valve 460 according to the pressure signal.
For example, when the first air pressure sensor P1 detects that the air pressure in the inner cavity 211 is zero, that is, the gaseous refrigerant in the inner cavity 211 is completely exhausted, the air supply controller controls the sixth solenoid valve 460 to open and the fifth solenoid valve 450 to close, at this time, chilled water starts to flow through the cold water pipeline 330, the chilled water exchanges heat with the gas between the outer cavity 212 and the inner cavity 211, the gas is condensed into liquid, the pressure difference between the outer cavity 212 and the outer cavity 212 is gradually eliminated, the inner cavity 211 is not squeezed by the gas between the outer cavity 212 and the inner cavity 211, and at this time, the inner cavity 211 can obtain the gaseous refrigerant from the evaporator 110. When the first air pressure sensor P1 detects that the air pressure in the inner cavity 211 reaches the full air pressure value of the inner cavity 211, the air supply controller controls the sixth electromagnetic valve 460 to close and the fifth electromagnetic valve 450 to open, at this time, hot water starts to flow through the hot water pipeline 320, the hot water exchanges heat with liquid in the outer cavity 212, the liquid is evaporated and phase-changed into gas, a pressure difference is generated between the outer cavity 212 and the outer cavity 212, the squeezing deformation of the inner cavity 211 caused by the gas between the outer cavity 212 and the inner cavity 211 is reduced, and the gaseous refrigerant in the inner cavity is supplied to the air supply tank 200 while the inner cavity 211 is reduced. Finally, the gas supply tank 200 supplies the gaseous refrigerant into the floating bearing of the compressor 100.
In some embodiments, as shown in fig. 5, the first cycle assembly further includes an economizer 130, the condenser 120 is in communication with the evaporator 110 via the economizer 130, and the economizer 130 is in communication with the make-up port of the compressor 100 via a make-up gas line 131. The inner cavity 211 is connected to the air supply line 131 to receive the gaseous refrigerant from the air supply line 131.
After the high-pressure liquid refrigerant from the condenser 120 enters the economizer 130, a portion of the refrigerant is throttled, evaporated, and absorbs heat to cool another portion of the refrigerant, the cooled liquid refrigerant flows to the evaporator 110, and the non-cooled gaseous refrigerant returns to the compressor 100 from the gas inlet of the compressor 100 through the gas supply line 131 to be compressed again. At this time, the inner cavity 211 can obtain the gaseous refrigerant from the air supplement pipeline 131, and the gaseous refrigerant in the air supplement pipeline 131 is fully utilized.
Alternatively, as shown in fig. 6, the air supplement pipe 131 is communicated with the inner cavity 211 through a seventh solenoid valve 470. In the open state of the seventh solenoid valve 470, the internal cavity 211 can draw air from the air supply line 131.
Further, the seventh solenoid valve 470 is connected to the inner cavity 211 through a fifth check valve 550, and the fifth check valve 550 allows the gaseous refrigerant to flow from the air supply line 131 to the inner cavity 211. This prevents the gaseous refrigerant in the cavity 211 from flowing back to the air supply line 131.
In some embodiments, the gas supply system for levitating the bearing further includes a gas pressure monitoring assembly for monitoring a gas pressure value of inner chamber 211, or alternatively, for monitoring a gas pressure value of gas supply tank 200, or alternatively, for monitoring both gas pressure values of inner chamber 211 and gas supply tank 200.
Optionally, the air pressure monitoring assembly includes a first air pressure sensor P1, the first air pressure sensor P1 is disposed in the inner cavity 211 for monitoring an air pressure value of the inner cavity 211; alternatively, the air pressure monitoring assembly includes a second air pressure sensor P2, and a second air pressure sensor P2 is disposed in the air supply tank 200 for monitoring the air pressure value of the air supply tank 200; alternatively, the air pressure monitoring assembly includes a first air pressure sensor P1 and a second air pressure sensor P2 for monitoring the air pressure values of the inner chamber 211 and the air supply tank 200, respectively.
In some embodiments, the air supply system for the suspension bearing further comprises a temperature monitoring assembly for monitoring a temperature value of the water tank 300, or the outer chamber 212, or both the water tank 300 and the outer chamber 212.
Optionally, the temperature monitoring assembly includes a first temperature sensor, which is disposed in the water tank 300 and is used for monitoring a temperature value of the water tank 300; alternatively, the temperature monitoring assembly includes a second temperature sensor disposed in the outer chamber 212 for monitoring a temperature value of the outer chamber 212; alternatively, the temperature monitoring assembly includes a first temperature sensor and a second temperature sensor for monitoring the temperature of the water tank 300 and the outer chamber 212, respectively.
Here, an air supply control process of the air supply system for the levitation bearing is explained with reference to fig. 1 and 2:
(1) controlling the first electromagnetic valve 410 to be opened, obtaining the gaseous refrigerant from the evaporator 110 by the inner cavity 211, and gradually deforming and expanding the inner cavity 211;
(2) after the gaseous refrigerant in the inner cavity 211 is filled, the fifth electromagnetic valve 450 is controlled to be opened, hot water starts to flow in the hot water pipeline 320, the heat exchange of the liquid in the built-in heat pipe section 321 and the outer cavity 212 enables the liquid to be changed into gas, pressure difference is generated between the inner cavity 211 and the outer cavity 212, and the gas in the outer cavity 212 forces the inner cavity 211 to deform and shrink;
(3) when the second solenoid valve 420 is controlled to be opened, 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, and the gas supply tank 200 supplies gas to the floating bearing.
(4) After the gaseous refrigerant in the inner cavity 211 is exhausted, the sixth solenoid valve 460 is controlled to be opened and the fifth solenoid valve 450 is controlled to be closed, at this time, the chilled water starts to flow in the cold water pipeline 330, the heat exchange of the gas in the built-in cold pipe section 331 and the outer cavity 212 enables the gas to be changed into liquid, the pressure difference between the inner cavity 211 and the outer cavity 212 is gradually eliminated, the inner cavity 211 is not squeezed by the gas in the outer cavity 212, and at this time, the inner cavity 211 can continuously obtain the gaseous refrigerant from the evaporator 110.
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 (10)
1. An air supply system for a suspension bearing, comprising:
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 the inner cavity is a deformable cavity;
the evaporator is communicated with the air supply tank through the inner cavity, and the inner cavity acquires a gaseous refrigerant from the evaporator; liquid is filled between the outer cavity and the inner cavity;
and the pressure difference between the outer cavity and the inner cavity is adjusted through the phase change of the liquid, so that the inner cavity is forced to deform, and the air is supplied to the air supply tank through the inner cavity.
2. The gas supply system for a suspension bearing of claim 1, wherein the liquid is vaporized by the heating portion to change phase into gas.
3. The gas supply system for a suspension bearing of claim 2, wherein the heating portion comprises:
a water tank filled with hot water;
the hot water pipeline is communicated with the water tank, and part or all of the hot water pipeline is positioned in the liquid; and the section of the hot water pipeline located in the liquid is made of a heat conducting material.
4. The gas supply system for a suspension bearing of claim 2, wherein the gas changes phase to the liquid by condensation of a condensation section.
5. The air supply system for a suspension bearing of claim 4, wherein the condensing part comprises a cold water pipe filled with chilled water therein;
part or all of the cold water pipeline is positioned in the gas, and the pipe section of the cold water pipeline positioned in the gas is made of heat conducting materials.
6. The air supply system for a suspension bearing of claim 1, wherein the outer chamber takes liquid refrigerant from the evaporator and/or the condenser as the liquid.
7. The air supply system for a suspension bearing of claim 1, wherein said first circulation assembly further comprises an economizer, said condenser being in communication with said evaporator through said economizer, said economizer being in communication with an air make-up port of said compressor through an air make-up line;
the inner cavity is communicated with the air supplement pipeline so as to obtain gaseous refrigerant from the air supplement pipeline.
8. The gas supply system for a suspension bearing of claim 1, further comprising a gas pressure monitoring assembly to monitor a gas pressure value of the gas in the inner chamber and/or the gas supply tank.
9. The gas supply system for a suspension bearing of claim 3, further comprising a temperature monitoring assembly to monitor a temperature value of the water tank and/or the outer chamber.
10. A refrigeration system comprising an air supply system for a suspension bearing as claimed in any one of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111050890.3A CN113833762B (en) | 2021-09-08 | 2021-09-08 | Air supply system and refrigerating system for suspension bearing |
| PCT/CN2022/094079 WO2023035665A1 (en) | 2021-09-08 | 2022-05-20 | Gas supply system for suspension bearing, and refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111050890.3A CN113833762B (en) | 2021-09-08 | 2021-09-08 | Air supply system and refrigerating system for suspension bearing |
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| Publication Number | Publication Date |
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| CN113833762A true CN113833762A (en) | 2021-12-24 |
| CN113833762B CN113833762B (en) | 2024-04-19 |
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| CN202111050890.3A Active CN113833762B (en) | 2021-09-08 | 2021-09-08 | Air supply system and refrigerating system for suspension bearing |
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| WO (1) | WO2023035665A1 (en) |
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| WO2023035665A1 (en) * | 2021-09-08 | 2023-03-16 | 青岛海尔空调电子有限公司 | Gas supply system for suspension bearing, and refrigeration system |
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Also Published As
| Publication number | Publication date |
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| CN113833762B (en) | 2024-04-19 |
| WO2023035665A1 (en) | 2023-03-16 |
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