WO2023087687A1 - 冷凝器及用于悬浮轴承的供气系统 - Google Patents

冷凝器及用于悬浮轴承的供气系统 Download PDF

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Publication number
WO2023087687A1
WO2023087687A1 PCT/CN2022/098828 CN2022098828W WO2023087687A1 WO 2023087687 A1 WO2023087687 A1 WO 2023087687A1 CN 2022098828 W CN2022098828 W CN 2022098828W WO 2023087687 A1 WO2023087687 A1 WO 2023087687A1
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WIPO (PCT)
Prior art keywords
pump
liquid
casing
pool
condenser
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PCT/CN2022/098828
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English (en)
French (fr)
Inventor
韩振宇
郑修新
张捷
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
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Application filed by 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 filed Critical 青岛海尔空调电子有限公司
Publication of WO2023087687A1 publication Critical patent/WO2023087687A1/zh

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00Evaporators; Condensers
    • F25B39/04Condensers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/05Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056Bearings
    • F04D29/057Bearings hydrostatic; hydrodynamic
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00Bearings not otherwise provided for
    • F16C32/06Bearings 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
    • F16C32/0603Bearings 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 gas cushion, e.g. an air cushion
    • F16C32/0614Bearings 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 gas cushion, e.g. an air cushion the gas being supplied under pressure, e.g. aerostatic bearings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00Bearings not otherwise provided for
    • F16C32/06Bearings 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
    • F16C32/0662Details of hydrostatic bearings independent of fluid supply or direction of load
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00Compression machines, plants or systems with non-reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00Details of evaporators; Details of condensers
    • F25B2339/04Details of condensers

Definitions

  • the present application relates to the technical field of condensers, for example, to a condenser and an air supply system for suspension bearings.
  • the condenser is a key component in the field of air conditioning and refrigeration.
  • the air supply tank is generally used to supply air to the air suspension bearing of the air suspension compressor, and the air supply tank needs to obtain liquid refrigerant from the condenser. .
  • the condenser plays the role of supplying liquid to the air supply tank, so the liquid supply stability of the condenser directly affects the performance of the air suspension compressor, which in turn affects the cooling and heating effects of the air conditioning system.
  • the prior art discloses a suspension bearing air supply system.
  • a refrigerant pump is used to extract liquid refrigerant from the condenser through the pipeline and supply it to the air supply tank.
  • the liquid refrigerant is evaporated into a gaseous refrigerant after heating in the air supply tank.
  • the gaseous refrigerant is supplied to the suspension bearing of the compressor.
  • Embodiments of the present disclosure provide a condenser and an air supply system for suspension bearings, which solve the problem that the refrigerant pump is difficult to start due to refrigerant gasification and cannot pump liquid in time after starting.
  • the condenser includes:
  • the casing including the refrigerant inlet
  • a condensing component arranged in the casing, for condensing the refrigerant entering the casing
  • the pump pool is connected to the bottom of the casing to collect the liquid in the casing; the pump body is arranged in the pump pool, and the pump outlet of the pump body is used to communicate with liquid equipment , the pump inlet of the pump body is arranged at the lower part of the pump pool and immersed in the liquid.
  • the casing also includes:
  • the connecting joint is formed by protruding downward from the bottom of the casing and has an outlet; the pump pool is connected to the outlet.
  • the pump pool is detachably connected to the connecting joint through a flange assembly.
  • the flange assembly includes:
  • the first flange is arranged on the lower periphery of the connecting joint
  • the second flange is arranged on the upper periphery of the pump pool; the second flange is compatible with the first flange, and the pump pool is connected to the pump pool through the second flange.
  • the first flange of the above joint is arranged on the upper periphery of the pump pool; the second flange is compatible with the first flange, and the pump pool is connected to the pump pool through the second flange.
  • the pump assembly also includes:
  • An outlet pipeline one end of which communicates with the pump outlet, and the other end passes through the side wall of the connecting joint or the side wall of the pump pool to form a liquid outlet for communicating with the liquid-using equipment.
  • the pump body includes a submersible pump.
  • the pump assembly also includes:
  • the control part is used to control the start and stop of the pump body according to the liquid levels in the pump pool and the casing.
  • control unit includes:
  • a liquid level monitoring device used to monitor the liquid level in the pump pool and the casing
  • a controller is electrically connected to the liquid level monitoring device and the pump body; the controller is used to control the start and stop of the pump body according to the liquid level signal of the liquid level monitoring device.
  • the air supply system for suspension bearings includes: the condenser described in any of the above embodiments;
  • Compressors including air bearings
  • the air supply device includes an air supply tank, the air supply tank is connected to the outlet of the pump to take liquid from the condenser; and the air supply tank is also connected to the air suspension bearing to supply the air Suspension bearing air supply.
  • the air supply system for the suspension bearing also includes an evaporator; the casing also includes:
  • the second refrigerant outlet is arranged at the bottom of the casing and communicated with the evaporator.
  • the gaseous refrigerant enters the casing from the refrigerant inlet and is condensed into a liquid state after exchanging heat with the condensing component.
  • the liquid refrigerant accumulates at the bottom of the casing and gathers in the pump pool along the bottom of the casing. Since the pump inlet is located at the lower part of the pump pool and is submerged in the liquid, the pump inlet can be prevented from being exposed to gas.
  • the pump body can smoothly supply the liquid refrigerant in the pump pool to the external liquid-using equipment through the pump outlet.
  • Fig. 1 is a schematic structural diagram of a condenser provided by an embodiment of the present disclosure
  • Fig. 2 is a schematic structural diagram of a condenser provided by an embodiment of the present disclosure
  • Fig. 3 is a schematic structural diagram of a pump pool provided by an embodiment of the present disclosure.
  • Fig. 4 is a schematic structural diagram of a pump pool provided by an embodiment of the present disclosure.
  • Fig. 5 is a schematic structural diagram of a pump pool provided by an embodiment of the present disclosure.
  • Fig. 6 is a schematic diagram of an air supply system for a suspension bearing provided by an embodiment of the present disclosure.
  • 100 compressor; 101: air suspension bearing; 110: evaporator; 120: condenser; 121: casing; 122: refrigerant inlet; 123: refrigerant outlet; 124: cooling water inlet; 125: cooling water outlet; 126: heat exchange tube;
  • 200 connecting section; 201: first flange; 210: pump pool; 211: second flange; 230: pump body; 231: pump inlet; 232: outlet pipeline; 240: cooling coil; 250: first liquid level gauge;
  • 300 air supply tank; 310: heating device; 320: second liquid level gauge.
  • 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.
  • 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.
  • A/B means: A or B.
  • a and/or B means: A or B, or, A and B, these three relationships.
  • the air conditioning system generally includes a compressor 100, a condenser 120, a throttling device and an evaporator 110, wherein the condenser 120 communicates with the exhaust port of the compressor 100, the condenser 120 communicates with the evaporator 110 through the throttling device, and the evaporator 110 is connected to the suction port of the compressor 100, and the refrigerant discharged from the discharge port of the compressor 100 passes through the condenser 120, the throttling device and the evaporator 110 in sequence, and finally returns to the compressor 100 and is recompressed, so that the cycle of the refrigerant is carried out .
  • condenser 120 includes a shell and tube condenser.
  • the outer casing 121 of the shell-and-tube condenser is in the shape of a cylinder placed horizontally.
  • the inside of the casing 121 is provided with a condensing assembly, and the top of the casing 121 is provided with a refrigerant inlet 122 .
  • the gaseous refrigerant discharged from the compressor 100 through the exhaust port enters the casing 121 from the refrigerant inlet 122 , and exchanges heat with the condensing component in the casing 121 , and then the gaseous refrigerant is condensed into a liquid refrigerant.
  • the condensing assembly includes heat exchange tubes 126 and tube sheets.
  • two ends of the casing 121 are respectively provided with a tube plate inside, and the two ends of the heat exchange tube 126 are respectively fixed on the two tube plates.
  • the first end of the casing 121 has a first cover, and the second end of the casing 121 has a second cover.
  • the first tank cover and the tube sheet enclosure at this end constitute a water inlet tank, and the second tank cover and the tube sheet enclosure at this end constitute a water outlet tank.
  • the water inlet tank is provided with a cooling water inlet 124, and the water outlet tank is provided with a cooling water outlet 125.
  • the cooling water flows through the water inlet box, the heat exchange tube 126 and the water outlet box successively from the cooling water inlet 124, and finally flows out from the cooling water outlet 125.
  • the low-temperature cooling water in the heat exchange tube 126 exchanges heat with the gaseous refrigerant in the casing 121 , and the gaseous refrigerant is condensed into a liquid state and then collected at the bottom of the casing 121 .
  • the bottom of the casing 121 is provided with a refrigerant outlet 123 .
  • the refrigerant outlet 123 is opposite to the refrigerant inlet 122 disposed on the top of the casing 121 .
  • the liquid refrigerant collected at the bottom of the casing 121 can flow to the evaporator 110 through the refrigerant outlet 123 .
  • an air baffle is provided inside the casing 121 .
  • the air baffle is arranged corresponding to the refrigerant inlet 122 , and is used to block and divert the refrigerant entering the casing 121 from the refrigerant inlet 122 .
  • the high-temperature and high-pressure gaseous refrigerant is prevented from directly impacting the heat exchange tube 126 , which facilitates the uniform circulation of the gaseous refrigerant in the casing 121 and improves the heat exchange efficiency between the gaseous refrigerant and the heat exchange tube 126 .
  • an embodiment of the present disclosure provides a condenser 120 , including a casing 121 , a condensing assembly and a pump assembly.
  • the pump assembly includes a pump pool 210 and a pump body 230; wherein, the pump pool 210 communicates with the bottom of the casing 121 to collect the liquid in the casing 121; the pump body 230 is arranged in the pump pool 210, and the pump body 230 The pump outlet is used to communicate with liquid equipment, and the pump inlet 231 of the pump body 230 is set at the lower part of the pump pool 210 and immersed in the liquid.
  • the gaseous refrigerant enters the casing 121 from the refrigerant inlet 122 and is condensed into a liquid state after exchanging heat with the condensing component.
  • the liquid refrigerant accumulates at the bottom of the casing 121 and gathers in the pump pool 210 along the bottom of the casing 121 . Since the pump inlet 231 is located at the lower part of the pump pool 210 and is submerged in the liquid, it is possible to prevent the pump inlet 231 from being exposed to gas.
  • the pump body 230 can smoothly supply the liquid refrigerant in the pump pool 210 to external liquid-using equipment through the pump outlet.
  • the casing 121 further includes a connecting section 200 .
  • the connecting joint 200 is formed by protruding downward from the bottom of the casing 121 and has an outlet; the pump pool 210 communicates with the outlet. Since the connecting section 200 is formed by the bottom of the casing 121 protruding downward, under the action of gravity, the liquid refrigerant at the bottom of the casing 121 flows to the connecting section 200, and flows into the pump pool 210 through the outlet along the side wall of the connecting section 200 .
  • connection joint 200 is configured in a cylindrical shape or a cylindrical shape.
  • a first flange 201 is provided on the lower periphery of the connecting joint 200 .
  • the pump pool 210 is configured as a cylindrical or cylindrical shape with the same shape as the connection section 200 , without a cover on the top. If the connecting section 200 is cylindrical, the pump pool 210 is also cylindrical, and if the connecting section 200 is cylindrical, the pump pool 210 is also cylindrical.
  • the upper periphery of the pump pool 210 is provided with a second flange 211 , and the second flange 211 is compatible with the first flange 201 .
  • the pump pool 210 is detachably connected to the connection joint 200 , which is convenient for installing the pump body 230 into the pump pool 210 .
  • the housing of the pump pool 210 is made of heat insulating material, and/or the exterior of the pump pool 210 is covered with heat insulating material. In this way, the liquid refrigerant in the pump pool 210 can be prevented from heat exchange with the external environment to gasify in large quantities, which will affect the operation of the pump body 230 .
  • the gasket between the first flange 201 and the second flange 211 .
  • the refrigerant is prevented from leaking from the connection between the pump pool 210 and the connection section 200 by the gasket.
  • the lower part of the pump pool 210 is provided with an installation seat, and the pump body 230 is fixed on the installation seat.
  • the pump inlet 231 is located at the bottom of the pump body 230 and vertically downward, so that the pump inlet 231 is submerged in the liquid refrigerant.
  • the pump assembly also includes an outlet line 232 .
  • One end of the outlet pipeline 232 communicates with the pump outlet, and the other end passes through the side wall of the connection joint 200 or the side wall of the pump pool 210 to form a liquid outlet.
  • one or more pipe clips are arranged in the pump pool 210 , and one or more pipe clips are arranged in the connecting section 200 .
  • the side wall of the connecting section 200 is provided with a pipe hole, and the outlet pipe 232 is fixed on the side wall of the pump pool 210 and the side wall of the connecting section 200 through a pipe clip, and the outlet pipe 232 extends out of the connecting section 200 through the pipe hole.
  • the liquid outlet port of the outlet pipe 232 is connected to the liquid inlet pipe of the external liquid-using equipment through a pipe connection flange.
  • the pipe hole is arranged on the joint 200, so that the outlet pipe 232 is connected to the external liquid equipment through the pipe hole, and then the pump body 230 is installed in the pump pool 210 and the pump pool 210 and the joint 200 are installed together.
  • one or more pipe clamps are arranged in the pump pool 210 , and pipe holes are opened on the side wall of the upper part of the pump pool 210 .
  • the outlet pipeline 232 is fixed on the side wall of the pump pool 210 through a pipe clamp, and the outlet pipeline 232 is connected to external liquid equipment through a pipeline hole provided in the pump pool 210 .
  • a spiral cooling coil 240 is suspended in the middle of the connecting section 200 .
  • the cooling coil 240 communicates with the heat exchange tube 126 of the condenser 120 , and low-temperature cooling water circulates inside.
  • the pressure at the pump inlet 231 is low, and the liquid refrigerant in the upper part of the pump pool 210 will inevitably vaporize, causing the liquid level of the pump pool 210 to drop.
  • the cooling coil 240 By setting the cooling coil 240 to make full use of the cooling capacity of the cooling water, the rising gas in the pump pool 210 exchanges heat with the cooling water in the cooling coil 240 , and the design of the spiral cooling coil 240 increases the heat exchange area.
  • a plurality of vertical and evenly arranged micro-groove structures are arranged around the inner wall of the connection joint 200 .
  • the liquid refrigerant at the bottom of the casing 121 flows into the pump pool 210 along the inner wall of the connecting section 200 , and the liquid flowing from the connecting section 200 to the pump pool 210 can be accelerated under the action of the micro-groove structure.
  • the pump body 230 needs to operate at high power, and the pressure at the pump inlet 231 is further reduced, causing the liquid refrigerant in the pump pool 210 to quickly vaporize.
  • the gas is liquefied and flows back to the pump pool 210 ; under the action of the micro-groove structure, the refrigerant at the bottom of the casing 121 quickly flows into the pump pool 210 . In this way, the liquid level of the pump pool 210 is ensured under a large demand for liquid supply, and the pump inlet 231 is prevented from being exposed to gas.
  • the pump body 230 includes a submersible pump.
  • the submersible pump can be fully immersed in the liquid refrigerant, and can better pump liquid to the external liquid equipment.
  • the pump assembly further includes a control part, which is used to control the start and stop of the pump body 230 according to the liquid levels in the pump pool 210 and the casing 121 .
  • the liquid level in the pump pool 210 needs to be kept above the pump inlet 231 to prevent the pump inlet 231 from being exposed to the gas; the liquid level in the casing 121 needs to be kept below the condensing component to avoid heat exchange between the liquid and the condensing component, which in turn affects the gas condensation effect.
  • the control part includes a liquid level monitoring device and a controller.
  • the liquid level monitoring device includes a first liquid level gauge 250 for monitoring the liquid levels of the pump pool 210 and the casing 121 .
  • the controller is electrically connected to the first liquid level gauge 250 and the pump body 230, the first liquid level gauge 250 transmits the liquid level signal of the pump pool 210 and the casing 121 to the controller, and the controller controls the start of the pump body 230 according to the liquid level signal and stop.
  • a first liquid level is preset in the pump pool 210
  • a second liquid level is preset in the casing 121 .
  • the controller detects the liquid level of the pump pool 210 through the first liquid level gauge 250 .
  • the controller controls the pump body 230 to start.
  • the controller controls the pump body 230 to stop, so as to avoid The liquid level in the pump sump 210 is too low causing the pump inlet 231 to be exposed to gas.
  • the external liquid device has a temporary liquid storage area.
  • the condenser 120 is running normally and the pump body 230 is stopped, the liquid refrigerant at the bottom of the casing 121 flows out through the refrigerant outlet 123 .
  • the controller controls the pump body 230 to start and pump liquid to the temporary liquid storage area of the external liquid use equipment, thereby To prevent the liquid level in the casing 121 from being too high to affect the heat exchange effect of the gas.
  • an embodiment of the present disclosure also provides an air supply system for a suspension bearing, including a compressor 100 , an air supply device, an evaporator 110 and the condenser 120 described in any of the above embodiments.
  • the compressor 100 is provided with an air suspension bearing 101
  • the air supply device includes an air supply tank 300 . Air is supplied to the air suspension bearing 101 through the air supply tank 300 to support and lubricate the rotor of the compressor 100 . Therefore, the stability of the air supply system is directly related to the performance of the compressor 100, which in turn affects the heating and cooling effects of the air conditioning system.
  • the evaporator 110 communicates with the condenser 120 through the refrigerant outlet 123 , part of the liquid refrigerant at the bottom of the casing 121 flows to the evaporator 110 through the refrigerant outlet 123 , and the other part flows into the pump pool 210 through the connecting joint 200 .
  • the air supply tank 300 is communicated with the outlet pipeline 232 of the pump body 230 disposed in the condenser 120 , and the air supply tank 300 is also communicated with the air suspension bearing 101 .
  • the air supply tank 300 is provided with a heating device 310 , and the pump body 230 pumps the liquid refrigerant in the condenser 120 into the air supply tank 300 when working.
  • the liquid refrigerant is vaporized after being heated by the heating device 310 , and then the gas supply tank 300 supplies the gas refrigerant to the air suspension bearing 101 . Therefore, the stability of the liquid supply from the condenser 120 to the air supply tank 300 directly affects the stability of the air supply from the air supply tank 300 to the air suspension bearing 101 .
  • the refrigerant in the condenser 120 accumulates at the bottom of the casing 121 and gathers in the pump pool 210 along the bottom of the casing 121 . Since the pump inlet 231 is located at the lower part of the pump pool 210 and is submerged in the liquid, it is possible to prevent the pump inlet 231 from being exposed to gas.
  • the pump body 230 supplies the liquid refrigerant in the pump pool 210 to the air supply tank 300 through the pump outlet. In this way, the pump body 230 can be started at any time according to the demand, and can pump liquid to the air supply tank 300 in time when starting, thereby ensuring the stability of the air supply system.
  • the gas supply tank 300 is provided with a second liquid level gauge 320, and the second liquid level gauge 320 is electrically connected to the controller.
  • the second liquid level gauge 320 is used to monitor the liquid level in the gas supply tank 300 .
  • the air supply tank 300 is preset with a required liquid level. When the second liquid level gauge 320 detects that the liquid level in the air supply tank 300 is lower than the required liquid level, it sends a demand signal to the controller. At this time, the controller determines that the air supply tank 300 There is a demand for liquid supply.
  • the controller After the controller receives the demand signal, when the first liquid level gauge 250 detects that the liquid level in the pump pool 210 is higher than or equal to the first liquid level, it controls the pump body 230 to start pumping liquid refrigerant to the gas supply tank 300 .
  • the pump body 230 When the first liquid level gauge 250 detects that the liquid level in the pump pool 210 is lower than the first liquid level, the pump body 230 is controlled to stop, so as to prevent gas from being exposed from the pump inlet 231 when the liquid level is too low.
  • the condenser 120 has been running for a certain period of time, the liquid level in the pump pool 210 gradually rises and is higher than or equal to the first liquid level, and then the pump body 230 is controlled to start.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

一种冷凝器(120)及用于悬浮轴承的供气系统,涉及制冷技术领域,包括:机壳(121),包括冷媒入口(122);冷凝组件,设置于所述机壳(121)内,用以冷凝进入所述机壳(121)的冷媒;泵组件,包括泵池(210)和泵体(230);其中,所述泵池(210)连通于所述机壳(121)的底部,以汇聚所述机壳(121)内的液体;所述泵体(230)设置于所述泵池(210)内,且所述泵体(230)的泵出口用于连通用液设备,所述泵体(230)的泵入口(231)设置于所述泵池(210)的下部且浸没于液体中。解决了冷媒泵由于冷媒气化造成的难以启动且启动后无法及时泵液的问题。

Description

冷凝器及用于悬浮轴承的供气系统
本申请基于申请号为202111400935.5、申请日为2021年11月19日的中国专利申请提出,并要求该中国专利申请的优先权,该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及冷凝器技术领域,例如涉及一种冷凝器及用于悬浮轴承的供气系统。
背景技术
冷凝器是空调制冷领域的关键构件,在采用气悬浮压缩机的空调系统中,一般采用供气罐向气悬浮压缩机的气悬浮轴承供气,而供气罐则需要从冷凝器获取液态冷媒。冷凝器起到了向供气罐供液的作用,因此冷凝器的供液稳定性直接影响气悬浮压缩机的性能,进而影响空调系统的制冷和制热效果。
现有技术公开了一种悬浮轴承供气系统,采用冷媒泵通过管路从冷凝器中抽取液态冷媒并供给至供气罐中,液态冷媒在供气罐内经过加热蒸发为气态冷媒,最后将气态冷媒供给至压缩机的悬浮轴承。
在实现本公开实施例的过程中,发现相关技术中至少存在如下问题:由于冷媒极易气化且冷媒泵的泵入口压力较低,因此管路存在气化的冷媒且气体存积在泵入口处,导致冷媒泵启动困难,且一旦启动后无法及时抽取液体,影响冷凝器向供气罐供液的稳定性。
发明内容
为了对披露的实施例的一些方面有基本的理解,下面给出了简单的概括。所述概括不是泛泛评述,也不是要确定关键/重要组成元素或描绘这些实施例的保护范围,而是作为后面的详细说明的序言。
本公开实施例提供一种冷凝器和用于悬浮轴承的供气系统,解决了冷媒泵由于冷媒气化造成的难以启动且启动后无法及时泵液的问题。
所述冷凝器包括:
机壳,包括冷媒入口;
冷凝组件,设置于所述机壳内,用以冷凝进入所述机壳的冷媒;
泵组件,包括泵池和泵体;
其中,所述泵池连通于所述机壳的底部,以汇聚所述机壳内的液体;所述泵体设置于所述泵池内,且所述泵体的泵出口用于连通用液设备,所述泵体的泵入口设置于所述泵池的下部且浸没于液体中。
可选的,所述机壳还包括:
连接节,由机壳的底部向下凸出构成,具有流出口;所述泵池连通于所述流出口。
可选的,所述泵池通过法兰组件可拆卸地连接于所述连接节。
可选的,所述法兰组件包括:
第一法兰盘,设置于所述连接节的下部周缘;
第二法兰盘,设置于所述泵池的上部周缘;所述第二法兰盘和所述第一法兰盘相适配,所述泵池通过所述第二法兰盘连接于所述连接节的第一法兰盘。
可选的,泵组件还包括:
出口管路,其的一端与所述泵出口连通,另一端穿过所述连接节的侧壁或者所述泵池的侧壁以形成出液接口,用于连通于所述用液设备。
可选的,所述泵体包括潜液泵。
可选的,所述泵组件还包括:
控制部,用以根据所述泵池内和所述机壳内的液位控制泵体的启停。
可选的,所述控制部包括:
液位监测装置,用以监测所述泵池和所述机壳内的液位;
控制器,电连接于所述液位监测装置和所述泵体;所述控制器用以根据所述液位监测装置的液位信号控制所述泵体的启停。
所述用于悬浮轴承的供气系统包括:上述任意实施例所述的冷凝器;
压缩机,包括气悬浮轴承;
供气装置,包括供气罐,所述供气罐连通于所述泵出口,以从所述冷凝器取液;且所述供气罐还连通于所述气悬浮轴承,以向所述气悬浮轴承供气。
可选的,所述用于悬浮轴承的供气系统还包括蒸发器;所述机壳还包括:
第二冷媒出口,设置于所述机壳的底部且连通于所述蒸发器。
本公开实施例提供的冷凝器和用于悬浮轴承的供气系统可以实现以下技术效果:
气态冷媒从冷媒入口进入机壳内并与冷凝组件热交换后被冷凝为液态。液态冷媒积聚在机壳底部,并且沿着机壳的底部汇聚于泵池内。由于泵入口位于泵池的下部且浸没于液体中,能够避免泵入口暴露于气体中。泵池上部和泵入口附近的液态冷媒即使发生气化也不会在泵入口积存,而是上升进入机壳内与冷凝组件热交换并重新液化回流至泵池内,能 够避免泵入口积存气体而且保持泵池的液位。最后泵体通过泵出口能够顺利地将泵池内的液态冷媒供给至外部的用液设备。
以上的总体描述和下文中的描述仅是示例性和解释性的,不用于限制本申请。
附图说明
一个或多个实施例通过与之对应的附图进行示例性说明,这些示例性说明和附图并不构成对实施例的限定,附图中具有相同参考数字标号的元件示为类似的元件,附图不构成比例限制,并且其中:
图1是本公开实施例提供的冷凝器的结构示意图;
图2是本公开实施例提供的冷凝器的结构示意图;
图3是本公开实施例提供的泵池的结构示意图;
图4是本公开实施例提供的泵池的结构示意图;
图5是本公开实施例提供的泵池的结构示意图;
图6是本公开实施例提供的用于悬浮轴承的供气系统的示意图。
附图标记:
100:压缩机;101:气悬浮轴承;110:蒸发器;120:冷凝器;121:机壳;122:冷媒入口;123:冷媒出口;124:冷却水入口;125:冷却水出口;126:换热管;
200:连接节;201:第一法兰盘;210:泵池;211:第二法兰盘;230:泵体;231:泵入口;232:出口管路;240:冷却盘管;250:第一液位计;
300:供气罐;310:加热装置;320:第二液位计。
具体实施方式
为了能够更加详尽地了解本公开实施例的特点与技术内容,下面结合附图对本公开实施例的实现进行详细阐述,所附附图仅供参考说明之用,并非用来限定本公开实施例。在以下的技术描述中,为方便解释起见,通过多个细节以提供对所披露实施例的充分理解。然而,在没有这些细节的情况下,一个或多个实施例仍然可以实施。在其它情况下,为简化附图,熟知的结构和装置可以简化展示。
本公开实施例的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便这里描述的本公开实施例的实施例。此外,术语“包括”和“具有”以及他们的任何变形,意图在于覆盖不排他的包含。
本公开实施例中,术语“上”、“下”、“内”、“中”、“外”、“前”、“后”等指示的方位或位置关系为基于附图所示的方位或位置关系。这些术语主要是为了更好地描述本公开实施例及其实施例,并非用于限定所指示的装置、元件或组成部分必须具有特定方位,或以特定方位进行构造和操作。并且,上述部分术语除了可以用于表示方位或位置关系以外,还可能用于表示其他含义,例如术语“上”在某些情况下也可能用于表示某种依附关系或连接关系。对于本领域普通技术人员而言,可以根据具体情况理解这些术语在本公开实施例中的具体含义。
另外,术语“设置”、“连接”、“固定”应做广义理解。例如,“连接”可以是固定连接,可拆卸连接,或整体式构造;可以是机械连接,或电连接;可以是直接相连,或者是通过中间媒介间接相连,又或者是两个装置、元件或组成部分之间内部的连通。对于本领域普通技术人员而言,可以根据具体情况理解上述术语在本公开实施例中的具体含义。
除非另有说明,术语“多个”表示两个或两个以上。
本公开实施例中,字符“/”表示前后对象是一种“或”的关系。例如,A/B表示:A或B。
术语“和/或”是一种描述对象的关联关系,表示可以存在三种关系。例如,A和/或B,表示:A或B,或,A和B这三种关系。
需要说明的是,在不冲突的情况下,本公开实施例中的实施例及实施例中的特征可以相互组合。
空调系统一般包括压缩机100、冷凝器120、节流装置和蒸发器110,其中冷凝器120与压缩机100的排气口相连通,冷凝器120通过节流装置连通于蒸发器110,蒸发器110与压缩机100的吸气口相连通,压缩机100的排气口排出的冷媒依次经过冷凝器120、节流装置和蒸发器110,最后返回压缩机100并重新压缩,如此进行冷媒的循环。
在一些实施例中,冷凝器120包括管壳式冷凝器。管壳式冷凝器外部的机壳121为水平放置的筒体状,机壳121的内部设有冷凝组件,机壳121的顶部设有冷媒入口122。压缩机100通过排气口排出的气态冷媒从冷媒入口122进入机壳121内,并与机壳121内的冷凝组件热交换,继而气态冷媒被冷凝为液态冷媒。
可选地,冷凝组件包括换热管126和管板。其中,机壳121两端的内部分别设置有一个管板,换热管126的两端分别固定于两个管板上。机壳121的第一端具有第一箱盖,机壳121的第二端具有第二箱盖。第一箱盖和该端的管板围限构成进水箱,第二箱盖和该端的管板围限构成出水箱。进水箱设有冷却水入口124,出水箱设有冷却水出口125。冷却 水从冷却水入口124依次流经进水箱、换热管126和出水箱,最后从冷却水出口125流出。换热管126内的低温冷却水和机壳121内的气态冷媒热交换,气态冷媒被冷凝为液态后汇集在机壳121的底部。
进一步地,可选地,机壳121的底部设有冷媒出口123。冷媒出口123和设置于机壳121顶部的冷媒入口122相对设置。汇聚于机壳121底部的液态冷媒能够通过冷媒出口123流向蒸发器110。
更进一步地,可选地,机壳121内设有挡气板。挡气板对应于冷媒入口122设置,用于对从冷媒入口122进入机壳121内的冷媒进行阻挡分流。从而避免高温高压的气态冷媒直接冲击换热管126,有利于气态冷媒均匀地在机壳121内流通,提高气态冷媒与换热管126的换热效率。
结合图1-6所示,本公开实施例提供了一种冷凝器120,包括机壳121、冷凝组件和泵组件。其中,泵组件包括泵池210和泵体230;其中,泵池210连通于机壳121的底部,以汇聚机壳121内的液体;泵体230设置于泵池210内,且泵体230的泵出口用于连通用液设备,泵体230的泵入口231设置于泵池210的下部且浸没于液体中。
采用本公开实施例提供的冷凝器120,气态冷媒从冷媒入口122进入机壳121内并与冷凝组件热交换后被冷凝为液态。液态冷媒积聚在机壳121底部,并且沿着机壳121的底部汇聚于泵池210内。由于泵入口231位于泵池210的下部且浸没于液体中,能够避免泵入口231暴露于气体中。泵池210上部和泵入口231附近的液态冷媒即使发生气化也不会在泵入口231积存,而是上升进入机壳121内与冷凝组件热交换并重新液化回流至泵池210内,能够避免泵入口231积存气体而且保持泵池210的液位。最后泵体230通过泵出口能够顺利地将泵池210内的液态冷媒供给至外部的用液设备。
在一些实施例中,如图1和图2所示,机壳121还包括连接节200。连接节200由机壳121的底部向下凸出构成,具有流出口;泵池210连通于流出口。由于连接节200由机壳121的底部向下凸出构成,在重力作用下,机壳121的底部液态冷媒流向连接节200,并沿着连接节200的侧壁通过流出口流入泵池210内。
可选地,连接节200被构造为筒体形状或柱体形状。
进一步地,可选地,连接节200的下部周缘设置有第一法兰盘201。
更进一步地,可选地,为了便于泵池210和连接节200进行装配,泵池210被构造为与连接节200形状相同的、上部无盖的筒体形或柱体形状。连接节200为筒体状则泵池210也为筒体状,连接节200为柱体状泵池210也为柱体状。
更进一步地,可选地,泵池210的上部周缘设置有第二法兰盘211,且第二法兰盘211 和第一法兰盘201相适配。装配时将泵池210的上部和连接节200的下部相抵靠,调节泵池210的水平位置使第二法兰盘211的螺栓孔与第一法兰盘201的螺栓孔相对应,最后使用螺栓紧固件固定第一法兰盘201和第二法兰盘211。这样泵池210和连接节200可拆卸连接,便于向泵池210内安装泵体230。
更进一步地,可选地,泵池210的壳体由绝热材料制成,和/或泵池210的外部包覆有绝热材料。这样避免泵池210内的液态冷媒与外界环境热交换大量气化,影响泵体230的运行。
更进一步地,可选地,第一法兰盘201和第二法兰盘211之间具有密封垫。通过密封垫避免冷媒从泵池210和连接节200的连接处泄露。
在一些实施例中,泵池210的下部设有安装座,泵体230固定于安装座上。泵入口231的设置位置位于泵体230的最下方且竖直向下,这样便于使泵入口231浸没于液态冷媒中。
可选地,泵组件还包括出口管路232。出口管路232的一端与泵出口连通,另一端穿过连接节200的侧壁或者泵池210的侧壁以形成出液接口。
示例性的,泵池210内设置有一个或多个管卡,连接节200内设有一个或多个管卡。连接节200的侧壁开设有管道孔,出口管路232通过管卡固定于泵池210的侧壁和连接节200的侧壁上,出口管路232通过管道孔伸出连接节200。出口管路232的出液接口和外部用液设备的进液管路之间通过管道连接法兰进行连接。这样将管道孔设置于连接节200,便于先将出口管路232通过管道孔连接于外部用液设备,再将泵体230安装于泵池210内并将泵池210与连接节200配合安装。
又一示例性的,如图4所示,泵池210内设置有一个或多个管卡,泵池210上部的侧壁开设有管道孔。出口管路232通过管卡固定于泵池210的侧壁上,出口管路232通过设置于泵池210的管道孔连接于外部的用液设备。
可选地,如图5所示,连接节200的中部悬空架设螺旋状的冷却盘管240。冷却盘管240连通于冷凝器120的换热管126,内部流通有低温的冷却水。当泵体230启动时泵入口231压力较低,泵池210上部的液态冷媒难免发生气化造成泵池210液位下降。通过设置冷却盘管240充分利用了冷却水的冷量,泵池210内上升的气体与冷却盘管240内的冷却水热交换,且螺旋状的冷却盘管240设计增大了换热面积。这样泵池210上部的和泵入口231的液态冷媒即使发生气化也不会在泵入口231积存,而是上升进入机壳121内与冷凝组件热交换并重新液化回流至泵池210内,同时保证了泵池210内的液位避免泵入口231暴露。
进一步地,可选地,环绕连接节200的内壁设置多条竖直的均匀排布的微槽结构。机壳121底部的液态冷媒沿着连接节200的内壁流向泵池210内,在微槽结构的作用下,能够加速从连接节200流向泵池210的液体。在外部用液设备具有较大供液需求的情况下,泵体230需要以高功率运行,泵入口231处的压力进一步降低导致泵池210的液态冷媒快速气化。在冷却盘管240的作用下,气体重新液化回流至泵池210;在微槽结构的作用下,机壳121底部的冷媒快速流向泵池210内。从而在较大的供液需求下保证泵池210的液位,避免泵入口231暴露于气体中。
可选地,泵体230包括潜液泵。潜液泵能够全部浸没于液态冷媒中,能够更好地向外部用液设备泵给液体。
在一些实施例中,泵组件还包括控制部,控制部用以根据泵池210内和机壳121内的液位控制泵体230的启停。泵池210内的液位需要保持在泵入口231以上,从而避免泵入口231暴露于气体中;机壳121内的液位需要保持在冷凝组件以下,避免液体与冷凝组件热交换,继而影响气体的冷凝效果。
可选地,控制部包括液位监测装置和控制器。液位监测装置包括第一液位计250,第一液位计250用于监测泵池210和机壳121的液位。控制器电连接于第一液位计250和泵体230,第一液位计250向控制器传递泵池210和机壳121的液位信号,控制器根据液位信号控制泵体230的启动和停止。
示例性的,泵池210内预设有第一液位,机壳121内预设有第二液位。当外部用液设备具有供液需求时,控制器通过第一液位计250检测泵池210的液位。当泵池210的液位高于或等于第一液位时,控制器控制泵体230启动。在泵体230向用液设备泵液的过程中,当第一液位计250检测到泵池210内的液位低于第一液位时控制器控制泵体230停机,从而从控制上避免泵池210液位过低导致泵入口231暴露于气体中。外部用液设备具有临时储液区域,当冷凝器120正常运行且泵体230停机时,机壳121底部的液态冷媒通过冷媒出口123流出。此时若第一液位计250检测到机壳121内的液位高于或等于第二液位时,控制器控制泵体230启动并向外部用液设备的临时储液区域泵液,从而避免机壳121内的液位过高影响气体的热交换效果。
如图6所示,本公开实施例还提供了一种用于悬浮轴承的供气系统,包括压缩机100、供气装置、蒸发器110和上述任一实施例所描述的冷凝器120。其中压缩机100内设有气悬浮轴承101,供气装置包括供气罐300。通过供气罐300向气悬浮轴承101供气,从而起到支撑和润滑压缩机100的转子的作用。因此供气系统的稳定性直接关系到压缩机100的性能,进而影响空调系统的制热和制冷效果。
可选地,蒸发器110通过冷媒出口123连通于冷凝器120,机壳121的底部的液态冷媒一部分通过冷媒出口123流向蒸发器110,另一部分通过连接节200流向泵池210内。
进一步地,可选地,供气罐300连通于设置于冷凝器120内的泵体230的出口管路232,且供气罐300还连通于气悬浮轴承101。供气罐300内设置有加热装置310,泵体230工作时将冷凝器120内的液态冷媒泵给至供气罐300内。液态冷媒经过加热装置310加热后气化,然后供气罐300将气态冷媒供给至气悬浮轴承101。因此冷凝器120向供气罐300供液的稳定性直接影响供气罐300向气悬浮轴承101供气的稳定性。
采用本公开实施例提供的用于悬浮轴承的供气系统,冷凝器120内的冷媒积聚在机壳121底部,并且沿着机壳121的底部汇聚于泵池210内。由于泵入口231位于泵池210的下部且浸没于液体中,能够避免泵入口231暴露于气体中。泵池210上部的和泵入口231的液态冷媒即使发生气化也不会在泵入口231积存,而是上升进入机壳121内与冷凝组件热交换并重新液化回流至泵池210内,同时保持了泵池210的液位。最后泵体230通过泵出口将泵池210内的液态冷媒供给至供气罐300。这样泵体230能够根据需求随时启动,且启动时能够及时向供气罐300泵给液体,进而保证了供气系统的稳定性。
在一些实施例中,供气罐300内设有第二液位计320,第二液位计320电连接于控制器。第二液位计320用于监测供气罐300内的液位。供气罐300预设有需求液位,当第二液位计320监测到供气罐300内的液位低于需求液位时,向控制器发送需求信号此时控制器确定供气罐300具有供液需求。控制器接收到需求信号后,在第一液位计250检测到泵池210内的液位高于或等于第一液位的情况下,控制泵体230启动向供气罐300泵给液态冷媒。在第一液位计250检测到泵池210内的液位低于第一液位的情况下,控制泵体230停机,防止液位过低气体从泵入口231暴露。当冷凝器120运行一定时间后,泵池210内地液位逐渐升高且高于或等于第一液位时再控制泵体230启动。
以上描述和附图充分地示出了本公开的实施例,以使本领域的技术人员能够实践它们。其他实施例可以包括结构的以及其他的改变。实施例仅代表可能的变化。除非明确要求,否则单独的部件和功能是可选的,并且操作的顺序可以变化。一些实施例的部分和特征可以被包括在或替换其他实施例的部分和特征。本公开的实施例并不局限于上面已经描述并在附图中示出的结构,并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (10)

  1. 一种冷凝器,其特征在于,包括:
    机壳(121),包括冷媒入口(122);
    冷凝组件,设置于所述机壳(121)内,用以冷凝进入所述机壳(121)的冷媒;
    泵组件,包括泵池(210)和泵体(230);
    其中,所述泵池(210)连通于所述机壳(121)的底部,以汇聚所述机壳(121)内的液体;所述泵体(230)设置于所述泵池(210)内,且所述泵体(230)的泵出口用于连通用液设备,所述泵体(230)的泵入口(231)设置于所述泵池(210)的下部且浸没于液体中。
  2. 根据权利要求1所述的冷凝器,其特征在于,所述机壳(121)还包括:
    连接节(200),由机壳(121)的底部向下凸出构成,具有流出口;所述泵池(210)连通于所述流出口。
  3. 根据权利要求2所述的冷凝器,所述泵池(210)通过法兰组件可拆卸地连接于所述连接节(200)。
  4. 根据权利要求3所述的冷凝器,其特征在于,所述法兰组件包括:
    第一法兰盘(201),设置于所述连接节(200)的下部周缘;
    第二法兰盘(211),设置于所述泵池(210)的上部周缘;所述第二法兰盘(211)和所述第一法兰盘(201)相适配,所述泵池(210)通过所述第二法兰盘(211)连接于所述连接节(200)的第一法兰盘(201)。
  5. 根据权利要求1至4任一项所述的冷凝器,其特征在于,所述泵组件还包括:
    出口管路(232),其的一端与所述泵出口连通,另一端穿过所述连接节(200)的侧壁或者所述泵池(210)的侧壁以形成出液接口,用于连通于所述用液设备。
  6. 根据权利要求1至4任一项所述的冷凝器,其特征在于,所述泵体(230)包括潜液泵。
  7. 根据权利要求1所述的冷凝器,其特征在于,所述泵组件还包括:
    控制部,用以根据所述泵池(210)内和所述机壳(121)内的液位控制泵体(230)的启停。
  8. 根据权利要求7所述的冷凝器,其特征在于,所述控制部包括:
    液位监测装置,用以监测所述泵池(210)和所述机壳(121)内的液位;
    控制器,电连接于所述液位监测装置和所述泵体(230);所述控制器用以根据所述液位监测装置的液位信号控制所述泵体(230)的启停。
  9. 一种用于悬浮轴承的供气系统,其特征在于,包括:
    如权利要求1至8任一项所述的冷凝器;
    压缩机(100),包括气悬浮轴承(101);
    供气装置,包括供气罐(300),所述供气罐(300)连通于所述泵出口,以从所述冷凝器(120)取液;且所述供气罐(300)还连通于所述气悬浮轴承(101),以向所述气悬浮轴承(101)供气。
  10. 根据权利要求9所述的用于悬浮轴承的供气系统,其特征在于,还包括蒸发器(110);
    所述机壳(121)还包括:
    第二冷媒出口(123),设置于所述机壳(121)的底部且连通于所述蒸发器(110)。
PCT/CN2022/098828 2021-11-19 2022-06-15 冷凝器及用于悬浮轴承的供气系统 WO2023087687A1 (zh)

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