US20200149792A1 - Liquid temperature-control apparatus and method - Google Patents

Liquid temperature-control apparatus and method Download PDF

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Publication number
US20200149792A1
US20200149792A1 US16/627,580 US201816627580A US2020149792A1 US 20200149792 A1 US20200149792 A1 US 20200149792A1 US 201816627580 A US201816627580 A US 201816627580A US 2020149792 A1 US2020149792 A1 US 2020149792A1
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US
United States
Prior art keywords
unit
circulating
heat
temperature
cold
Prior art date
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Abandoned
Application number
US16/627,580
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English (en)
Inventor
Ming Wang
Baotong HAO
Liuyang DU
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Micro Electronics Equipment Co Ltd
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Shanghai Micro Electronics Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Micro Electronics Equipment Co Ltd filed Critical Shanghai Micro Electronics Equipment Co Ltd
Publication of US20200149792A1 publication Critical patent/US20200149792A1/en
Abandoned legal-status Critical Current

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    • F25B41/062—
    • 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
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
    • 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
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • 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
    • 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
    • F25B49/027—Condenser control 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2513—Expansion valves
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2117—Temperatures of an evaporator
    • F25B2700/21171—Temperatures of an evaporator of the fluid cooled by the evaporator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present application relates to the field of refrigeration and, in particular, to a liquid temperature control apparatus and method.
  • the present application provides a liquid temperature control apparatus and method to overcome the problem of high structural complexity that accompanies high control accuracy arising from the use of conventional refrigeration units.
  • the liquid temperature control apparatus provided in the present application comprises:
  • a circulating refrigeration unit configured to provide heat and cold to an object to be cooled
  • a circulating cold consuming unit coupled to the circulating refrigeration unit, configured to cool the object
  • a heat exchange unit configured for heat exchange between the circulating refrigeration unit and the circulating cold consuming unit
  • a temperature detection and control unit configured to monitor temperatures of the circulating refrigeration unit and the circulating cold consuming unit.
  • a heat output port of the circulating refrigeration unit may be configured to provide the circulating cold consuming unit with heat.
  • the heat exchange unit may comprise a first heat exchange module and a second heat exchange module, wherein the circulating refrigeration unit and the first heat exchange module are configured to provide cold to the circulating cold consuming unit, and the circulating refrigeration unit and the second heat exchange module are configured to provide heat to the circulating cold consuming unit.
  • the heat output port of the circulating refrigeration unit may be coupled to a three-way valve, the three-way valve having a water outlet coupled to the second heat exchange module and another water outlet serving as a bypass outlet.
  • the temperature detection and control unit may be configured to regulate a heat supply of the circulating refrigeration unit through control of the three-way valve.
  • the temperature detection and control unit may be arranged at the heat output port and/or a cold output port of the circulating refrigeration unit.
  • the temperature detection and control unit may be arranged in the circulating cold consuming unit in order to detect and regulate the refrigeration of the object to be cooled.
  • the circulating refrigeration unit may comprise a condenser, an expansion valve, a first heat exchange module and a compressor, which are sequentially connected in series, wherein: a second heat exchange module is disposed at an outlet of the condenser, and the expansion valve is coupled to the temperature detection and control unit, the first heat exchange module being coupled to the circulating cold consuming unit.
  • either or each of the outlet and the inlet of the condenser may be implemented as a bypass port.
  • the temperature detection and control unit may be configured to regulate a cold supply of the circulating refrigeration unit through control of the expansion valve.
  • the circulating cold consuming unit may comprise a water tank and a pump that is disposed between the water tank and the object to be cooled, the pump driving a coolant to circulate within the circulating cold consuming unit.
  • the present application also provides a liquid temperature control method, comprising:
  • the heat exchange unit may comprise a first heat exchange module and a second heat exchange module, the circulating refrigeration unit and the first heat exchange module are configured to provide cold to the circulating cold consuming unit, the circulating refrigeration unit and the second heat exchange module are configured to provide heat to the circulating cold consuming unit.
  • the temperature detection and control unit may comprise the first temperature detection and control module for detecting and controlling the temperature of a coolant flowing into an object to be cooled.
  • the temperature detection and control unit may further comprise the second temperature detection and control module for detecting and controlling the temperature of a coolant in the circulating cold consuming unit that has been cooled.
  • the temperature detection and control unit may be configured to perform a control process comprising detecting, by the first temperature detection and control module, a temperature at an inlet of the object to be cooled, and adjusting a ratio of heat to cold supplied to the circulating cold consuming unit by the circulating refrigeration unit until a required temperature at the inlet of the object to be cooled is reached.
  • the temperature detection and control unit may be configured to perform a control process comprising detecting, by the first temperature detection and control module, a temperature at an inlet of the object to be cooled, and adjusting the heat supplied to the circulating cold consuming unit by the circulating refrigeration unit; and detecting, by the second temperature detection and control module, a temperature of a coolant after the circulating cold consuming unit has been cooled, and adjusting the cold supplied to the circulating cold consuming unit by the circulating refrigeration unit until a required temperature at the inlet of the object to be cooled is reached.
  • a heat output port of the circulating refrigeration unit is coupled to a three-way valve, and the temperature detection and control unit is configured to adjust the heat supply of the circulating refrigeration unit by the circulating cold consuming unit through control of the three-way valve.
  • a most commonly-used circulating refrigeration unit is allowed to be employed and no additional components is required to be welded in the circulating refrigeration unit. As a result, the number of welded joints is able to be reduced, lowering the risk of refrigerant leakage and increasing the reliability.
  • the present application feeds back the flow rate distribution in the liquid temperature control apparatus by the temperature detection and control unit, allowing an accuracy (better than ⁇ 0.1° C.) of temperature control higher than the accuracy ( ⁇ 1° C.) of temperature control in the prior art.
  • the present application uses the exchange between heat at the outlet of the condenser and the cold at the outlet of the first heat exchange module in the circulating refrigeration unit to achieve condensation heat recovery, and replaces heat supplied by a conventional electrical heater with the condensation heat, thus resulting in energy savings.
  • the present application achieves a high-accuracy control through addition of the three-way valve at the outlet of the condenser and control of the heat flowing into the second heat exchange module.
  • FIG. 1 is a structural schematic of a liquid temperature control apparatus according to embodiment 1 of the present application.
  • FIG. 2 is a diagram showing a control mechanism of the liquid temperature control apparatus according to embodiment 1 of the present application.
  • FIG. 3 is a diagram showing a control mechanism of a liquid temperature control apparatus according to embodiment 2 of the present application.
  • 1 compressor
  • 2 condenser
  • 3 expansion valve
  • 4 first heat exchange module
  • 5 object to be cooled
  • 6 pump
  • 7 water tank
  • 8 three-way valve
  • 9 second heat exchange module
  • 10 bypass port
  • 11 control unit
  • 12 first temperature sensor
  • 13 second temperature sensor.
  • a liquid temperature control apparatus includes a circulating refrigeration unit, a circulating cold consuming unit, a temperature detection and control unit and a heat exchange unit.
  • the circulating refrigeration unit is configured to provide the circulating cold consuming unit with heat and cold
  • the heat exchange unit is configured for heat exchange between the circulating refrigeration unit and the circulating cold consuming unit.
  • the temperature detection and control unit is configured for high-accuracy cooling of an object to be cooled by detecting the temperature of a coolant and controlling a supply ratio of heat to cold based on the detected temperature.
  • the circulating refrigeration unit is configured to refrigerate the circulating cold consuming unit and also take heat therefrom. Through detection and control by the temperature detection and control unit, the said heat is reused to effectuate a thermal compensation for the coolant in the circulating cold consuming unit. In this way, accurate temperature control can be achieved over the coolant in the circulating cold consuming unit.
  • the heat exchange unit includes a first heat exchange module 4 and a second heat exchange module 9 .
  • the circulating refrigeration unit provides cold to, and thus refrigerates, the coolant in the circulating cold consuming unit
  • the circulating refrigeration unit provides heat to, and thus effectuates thermal compensation for, the coolant in the circulating cold consuming unit.
  • first heat exchange module 4 may be an evaporator
  • second heat exchange module 9 may be a heat exchanger
  • the apparatus may include a three-way valve 8 .
  • the three-way valve 8 is connecting to each of the heat output port of the circulating refrigeration unit and the second heat exchange module 9 .
  • the third port of the three-way valve 8 can serve as a bypass port for discharging cooling water carrying excess heat.
  • the temperature detection and control unit may include a first temperature sensor 12 , a second temperature sensor 13 and a control unit 11 .
  • the first temperature sensor 12 may be act as a parameter taken into account in temperature detection feedback control or only used as temperature detection of the coolant in the circulating cold consuming unit.
  • the temperature detection and control unit is configured to regulate the heat exchange unit based on the detected temperature, thus achieving accurate temperature control over an object to be cooled.
  • the control of the heat exchange unit by the temperature detection and control unit may be accomplished by virtue of control of the three-way valve 8 and the circulating refrigeration unit.
  • the expansion valve 3 is provided in the circulating refrigeration unit. In the circulating refrigeration unit, the amount of refrigerating medium flowing into the first heat exchange module 4 is determined by the duty ratio of the expansion valve 3 .
  • the control of the circulating refrigeration unit by the temperature detection and control unit may be accomplished by control of the expansion valve 3 .
  • the first temperature sensor 12 may be disposed at the outlet of the first heat exchange module 4 and the circulating cold consuming unit and configured to detect a temperature at the outlet of the first heat exchange module 4 and transfer the temperature data to the control unit 11 .
  • the second temperature sensor 13 may be disposed at an inlet of the object to be cooled 5 to detect the temperature at the inlet of the object to be cooled 5 as well as discover and adjust temperature of the coolant in real time so as to ensure a stable temperature of the coolant flowing into the object to be cooled 5 .
  • the liquid temperature control apparatus may include the circulating refrigeration unit, the circulating cold consuming unit, the three-way valve 8 , the heat exchanger and the temperature detection and control unit.
  • the circulating refrigeration unit is configured to provide the circulating cold consuming unit with heat and cold.
  • the three-way valve 8 is disposed at the heat output port of the circulating refrigeration unit.
  • the circulating cold consuming unit is coupled to the circulating refrigeration unit for circulating cold supply to the object to be cooled 5 .
  • the heat exchange is configured to mix heat and cold from the circulating refrigeration unit and then provide the resulting heat or cold to the circulating cold consuming unit.
  • the temperature detection and control unit is configured to monitor temperatures of the circulating refrigeration unit and the circulating cold consuming unit.
  • the control unit 11 is connected to each of the circulating refrigeration unit, the three-way valve 8 and the temperature detection and control unit so as to be able to accurately control a cold supply temperature for the object to be cooled 5 .
  • the circulating refrigeration unit may include a compressor 1 , a condenser 2 , the expansion valve 3 and the first heat exchange module 4 .
  • the output port of the condenser 2 is coupled to the three-way valve 8 to provide heat to the circulating cold consuming unit.
  • the first heat exchange module 4 may be configured to provide cold to the circulating cold consuming unit, and the outlet temperature of the first heat exchange module 4 is controlled by the temperature detection and control unit through controlling the duty ratio of the expansion valve 3 .
  • the circulating cold consuming unit may include a water tank 7 and a pump 6 disposed between the water tank 7 and the object to be cooled 5 .
  • the pump 6 drives the coolant to circulate within the circulating cold consuming unit. Specifically, the coolant is driven by the pump 6 to flow from the water tank 7 into the object to be cooled 5 , and thus take out the heat from the object. Then, the coolant flows into the heat exchanger (i.e., the second heat exchange module 9 ) after flowing into the first heat exchange module 4 for refrigeration. Since the another inlet of the second heat exchange module 9 is connected to the three-way valve 8 , the circulating coolant that has been cooled by the first heat exchange module 4 is compensated with heat from the outflow from the condenser 2 . Finally, the coolant is provided to the water tank 7 to accomplish the cycle.
  • the heat exchanger i.e., the second heat exchange module 9
  • both the outlet and inlet of the condenser 2 may be implemented as bypass ports 10 so as to ensure constant flow rate at the outlet and inlet of the condenser 2 , and hence ensure no impact occurred on the heat dissipation performance.
  • a liquid temperature control method comprising:
  • a circulating cold consuming unit for circulating cold supply to an object to be cooled 5 ;
  • a condenser 2 providing, with a condenser 2 , an expansion valve 3 , a first heat exchange module 4 and a compressor 1 , a circulating refrigeration unit for providing the circulating cold consuming unit with heat and cold;
  • the temperature detection and control unit may include a first temperature sensor 12 disposed at an output port of the first heat exchange module 4 and the circulating cold consuming unit, a second temperature sensor 13 arranged at an inlet of the object to be cooled 5 and a control unit 11 .
  • the liquid temperature-control method comprising:
  • heat from the circulating refrigeration unit i.e., heat supply from the outlet of the condenser 2 to the second heat exchange module 9
  • heat from the circulating refrigeration unit is regulated via the three-way valve 8 .
  • detecting, by the second temperature sensor 13 the temperature at the inlet of the object to be cooled 5 again. In this way, the temperature at the inlet of the object to be cooled 5 can satisfy the requirement.
  • Embodiment 1 differs from Embodiment 1 in that the control unit 11 implements a different control method.
  • data detected by the first temperature sensor 12 is not used for feedback control but simply uses as a temperature monitoring.
  • the control unit 11 simply uses the second temperature sensor 13 to simultaneously feed back the opening of the expansion valve 3 and the three-way valve 8 and achieves the accurate temperature control through the control unit 11 .
  • the control unit 11 is configured to detect, via the second temperature sensor 13 , if a temperature at the inlet of the object to be cooled 5 satisfies the requirement. If the temperature is not satisfied, simultaneously regulating the three-way valve 8 and the expansion valve 3 so as to make the temperature at the inlet of the object to be cooled 5 satisfy the requirement.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
US16/627,580 2017-06-29 2018-06-26 Liquid temperature-control apparatus and method Abandoned US20200149792A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201710517728.5 2017-06-29
CN201710517728.5A CN109210836A (zh) 2017-06-29 2017-06-29 液体温控装置和方法
PCT/CN2018/092819 WO2019001413A1 (zh) 2017-06-29 2018-06-26 液体温控装置和方法

Publications (1)

Publication Number Publication Date
US20200149792A1 true US20200149792A1 (en) 2020-05-14

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US16/627,580 Abandoned US20200149792A1 (en) 2017-06-29 2018-06-26 Liquid temperature-control apparatus and method

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US (1) US20200149792A1 (ko)
JP (1) JP6931093B2 (ko)
KR (1) KR102245550B1 (ko)
CN (1) CN109210836A (ko)
SG (1) SG11201913037PA (ko)
TW (1) TWI675263B (ko)
WO (1) WO2019001413A1 (ko)

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US11231198B2 (en) 2019-09-05 2022-01-25 Trane International Inc. Systems and methods for refrigerant leak detection in a climate control system

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CN206160550U (zh) * 2016-10-18 2017-05-10 杭州卡塞尔机械有限公司 冷热一体机

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Publication number Publication date
SG11201913037PA (en) 2020-01-30
KR20200022487A (ko) 2020-03-03
JP2020525746A (ja) 2020-08-27
WO2019001413A1 (zh) 2019-01-03
CN109210836A (zh) 2019-01-15
TW201905597A (zh) 2019-02-01
KR102245550B1 (ko) 2021-04-27
JP6931093B2 (ja) 2021-09-01
TWI675263B (zh) 2019-10-21

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