EP2778570A2 - Verfahren und System zur Steuerung der Initiierung einer vorgegebenen Gefrierzykluszeit in einem Eiserzeuger - Google Patents

Verfahren und System zur Steuerung der Initiierung einer vorgegebenen Gefrierzykluszeit in einem Eiserzeuger Download PDF

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Publication number
EP2778570A2
EP2778570A2 EP14159225.3A EP14159225A EP2778570A2 EP 2778570 A2 EP2778570 A2 EP 2778570A2 EP 14159225 A EP14159225 A EP 14159225A EP 2778570 A2 EP2778570 A2 EP 2778570A2
Authority
EP
European Patent Office
Prior art keywords
water
temperature
condenser
time
ice making
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP14159225.3A
Other languages
English (en)
French (fr)
Other versions
EP2778570A3 (de
Inventor
Erbs Daryl
Lei Zhang
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.)
Welbilt Foodservice Companies LLC
Original Assignee
Manitowoc Foodservice Companies Inc
Manitowoc Foodservice Companies LLC
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 Manitowoc Foodservice Companies Inc, Manitowoc Foodservice Companies LLC filed Critical Manitowoc Foodservice Companies Inc
Publication of EP2778570A2 publication Critical patent/EP2778570A2/de
Publication of EP2778570A3 publication Critical patent/EP2778570A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C1/00—Producing ice
    • F25C1/12—Producing ice by freezing water on cooled surfaces, e.g. to form slabs
    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C1/00—Producing ice
    • F25C1/04—Producing ice by using stationary moulds
    • F25C1/045—Producing ice by using stationary moulds with the open end pointing downwards
    • 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
    • F25B2700/2116—Temperatures of a condenser
    • F25B2700/21163—Temperatures of a condenser of the refrigerant at the outlet of the condenser
    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C2600/00—Control issues
    • F25C2600/02—Timing
    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25C2700/14—Temperature of water

Definitions

  • the present disclosure relates to a method and system for controlling a freeze cycle in an ice making machine.
  • Inlet water temperature has a significant impact on the time required to freeze a full cube in a spray machine evaporator due to the sensible heat removal required for the entire volume of water and the relatively large volume of water relative to ice produced in each batch for a spray machine.
  • the evaporator, pump, and various components that make up the water circulation system warm up to a much higher temperature than the average during repetitive freeze and harvest cycles.
  • refrigerant migrates to the colder sections of the refrigeration system during off times. This results in significantly longer periods of time for the refrigeration system to chill the water volume and evaporator to the freezing point during the first freeze cycle following an off cycle when compared to repetitive freeze and harvest cycles.
  • a method and system of the present disclosure monitors the water temperature in a sump and refrigerant temperature exiting a condenser so that a start time of a freeze cycle/sequence is delayed until the water temperature reaches a predetermined value and a freeze cycle time period value based upon the temperature of the refrigerant is attained, thereby producing ice much more efficiently and saving energy.
  • the duration of the freeze cycle is able to adapt to changes in inlet water temperature, changes in ambient air temperature, and the impact of warm temperatures of internal ice making parts within the ice machine due to off cycle periods. This is accomplished through a combination of starting a freeze time period only after the water temperature for the volume of water circulating over the evaporator has reached approximately 32°F, and a freeze time period value that is a function of the liquid temperature leaving the condenser at the time where the water reaches approximately 32°F.
  • a heat exchange system comprises an evaporator and a condenser configured to make ice pieces with water applied to the evaporator during a freeze cycle.
  • a controller controls a start time and an end time of the freeze cycle so that the start time begins only if a temperature of the water is 32 degrees F or lower and the end time is based on a temperature of refrigerant exiting the condenser when the start time begins.
  • the end time is determined from a table of time versus condenser refrigerant exit temperatures at a time when the water is approximately 32 degrees F.
  • the heat exchanger system further comprises one or more sprayers that spray the water on the evaporator.
  • a first temperature sensor is located in the water and a second temperature sensor is located to sense the temperature of the refrigerant exiting the condenser. The start and end times are determined based on temperatures sensed by the first and second temperature sensors.
  • a processor and program module are associated with the controller.
  • the processor executes instructions of the program module to determine the start time and the end time of the freeze cycle.
  • An embodiment of a method for making ice with an ice making machine of the present disclosure comprises:
  • the method further comprises:
  • the method further comprises:
  • the method further comprises: executing instructions of a program module to determine the start time and end time of the freeze cycle.
  • the method further comprises: spraying the water on the evaporator.
  • the use of the refrigerant temperature leaving the condenser at the point in time that the water has reached 32°F means that the effect of the evaporator load has been standardized, and so the condenser leaving temperature is almost entirely due to the ambient temperature for the condenser cooling medium (air or water) and the relative efficiency of the condenser.
  • the evaporator heat removal capacity is strongly correlated to the liquid temperature, since it represents the enthalpy of the refrigerant entering the evaporator, and the time required to freeze a full cube in the evaporator once the water has reached 32°F is directly related to the enthalpy of the entering refrigerant. This relationship provides an accurate method for setting freeze time from the point where the water has reached 32°F.
  • an ice making machine 100 includes a freeze cycle/sequence controller of the present disclosure.
  • the ice making machine 100 makes and stores ice.
  • ice making machine 100 comprises a door 105 in a closed position, an ice storage area 110 and an ice making system 115.
  • Ice storage area 110 has a bin 120 that holds ice cubes.
  • Ice making system 115 makes ice cubes, and dispenses the ice cubes into bin 120.
  • Ice making machine 100 comprises an evaporator 2, spray assembly 3, water temperature sensor 4 and water trough or sump 130.
  • Ice making system 115 has a housing 117 enclosing a housing volume 116.
  • Housing 117 has an opening 119 therethrough covered by gate 125.
  • Housing 117 has a bottom portion that forms a sump 130 and a drain 135.
  • Temperature sensor 4 is located in sump 130.
  • a top portion of housing 117 forms cups 140.
  • Each of cups 140 surrounds an interior volume.
  • Housing 117 has a water inlet 145 having apertures 146 that receives water from a water supply through a water supply tube 150.
  • Water supply tube 150 has a valve 151, for example, a solenoid valve that opens to allow water from a water supply to flow through supply tube 150, and closes to block water from flowing through supply tube 150.
  • the water supply for example, is a public water supply.
  • a pump 155 is disposed in housing volume 116.
  • Pump 155 has a pump chamber 165 and a pump tube 170.
  • Pump tube 170 is connected to pump tube outlets 175.
  • Pump tube outlets 175 are connected to a mount 180 positioning pump tube outlets 175 in housing volume 116 above a baffle 185.
  • Ice making system 115 has a heat exchange system that performs a vapor compression cycle in thermal communication with housing 117.
  • the heat exchange system includes an evaporator 2 having an evaporator tube 190, a compressor (not shown), a condenser 604 (see Fig. 6 ) and a thermal expansion valve (not shown).
  • the evaporator tube 190 is in thermal communication with the interior volume of cups 140.
  • condenser 604 has a liquid line 600 leaving condenser 604, wherein a temperature sensor 620 (shown in Fig. 4 ) is disposed under insulation sleeve (black foam) 608 disposed before condenser coil 602.
  • a temperature sensor 620 shown in Fig. 4
  • insulation sleeve black foam
  • a controller 107 activates pump 155 that generates suction drawing water 160 in sump 130 into pump chamber 165.
  • Pump 155 generates a flow of the water from pump chamber 165 to pump tube 170, for example, by an impeller in pump chamber 165 operated by a motor.
  • the flow in pump tube 170 is directed to pump tube outlets 175, so that the flow generates a spray out of pump tube outlets 175 into cups 140.
  • Controller 107 activates the heat exchange system to flow cooled refrigerant through evaporator tube 190 during the freeze cycle.
  • the evaporator tube 190 is in thermal communication with the interior volume of cups 140 to cool the interior volume of cups 140.
  • controller 107 deactivates pump 155 so that water is no longer sprayed into cups 140 and controller 107 deactivates the heat exchange system to stop flow of cooled refrigerant through evaporator tube 190 ending the freeze cycle.
  • Valve 151 is closed to block water from flowing through supply tube 150 during the freeze cycle.
  • a system 400 comprises a computer 405 coupled to a network 420, e.g., the Internet.
  • Computer 405 may be a part of controller 107 or separate from controller 107. In either case, connections between controller 107 and computer 405 allow the freeze cycle sequence to operate.
  • Computer 405 includes a user interface 410, a processor 415, and a memory 425.
  • Computer 405 may be implemented on a general-purpose microcomputer. Although computer 405 is represented herein as a standalone device, it is not limited to such, but instead can be coupled to other devices (not shown) via network 420.
  • Processor 415 is configured of logic circuitry that responds to and executes instructions.
  • Memory 425 stores data and instructions for use by processor 415.
  • Memory 425 may be implemented in a random access memory (RAM), a hard drive, a read only memory (ROM), or a combination thereof.
  • RAM random access memory
  • ROM read only memory
  • One of the components of memory 425 is a program module 430.
  • Program module 430 contains instructions for controlling processor 415 to execute for control of the methods described herein, in particular, the control of freeze cycles of ice making machine 100.
  • Program module 430 includes a table 440 of time versus refrigerant temperature (e.g., a look-up table) and a freeze countdown timer 445.
  • the term "module” is used herein to denote a functional operation that may be embodied either as a stand-alone component or as an integrated configuration of a plurality of sub-ordinate components.
  • program module 430 may be implemented as a single module or as a plurality of modules that operate in cooperation with one another.
  • program module 430 is described herein as being installed in memory 425, and therefore being implemented in software, it could be implemented in any of hardware (e.g., electronic circuitry), firmware, software, or a combination thereof.
  • User interface 410 includes an input device, such as a keyboard or speech recognition subsystem, for enabling a user to communicate information and command selections to processor 415.
  • User interface 410 also includes an output device such as a display or a printer.
  • a cursor control such as a mouse, track-ball, or joy stick, allows the user to manipulate a cursor on the display for communicating additional information and command selections to processor 415.
  • Processor 415 outputs, to user interface 410, a result of an execution of the methods described herein. Alternatively, processor 415 could direct the output to a remote device (not shown) via network 420.
  • Storage medium 435 can be any conventional storage medium that stores program module 430 thereon in tangible form. Examples of storage medium 435 include a floppy disk, a compact disk, a magnetic tape, a read only memory, an optical storage media, universal serial bus (USB) flash drive, a digital versatile disc, or a zip drive. Alternatively, storage medium 435 can be a random access memory, or other type of electronic storage, located on a remote storage system and coupled to computer 405 via network 420.
  • USB universal serial bus
  • the controller operated freeze sequence uses processor 415 to execute instructions of program module 430 to control the freeze cycle with steps 530.
  • processor 415 initiates the freeze cycle sequence.
  • processor 415 monitors the sump water temperature as sensed by temperature sensor 205 of the water in the sump 130.
  • processor 415 checks to determine if the water temperature in the sump 130 is about 32°F or less. If the water temperature in sump 130 is higher than 32°F, then processor 415 returns to step 502.
  • processor 415 checks the temperature of the refrigerant leaving the condenser as monitored by condenser temperature sensor 620.
  • processor 415 uses the condenser temperature to determine a remaining freeze time from table 440 of time versus refrigerant temperature (i.e. a freeze time period value that is a function of the refrigerant temperature leaving the condenser at the time where the water reaches approximately 32°F).
  • processor 415 at step 510 starts freeze countdown timer from the freeze time value determined from look-up table 440.
  • Processor 415 then at step 512 monitors the freeze countdown timer value.
  • step 514 if the freeze timer value is not equal to a time out value, e.g., zero, steps 512 and 514 are repeated when the countdown freeze timer value is equal to zero, processor 415 at step 516 stops the freeze cycle and starts the harvest cycle or sequence.
  • a time out value e.g., zero
  • test data showing the variation in time required for the water to reach 32°F from the start of the freeze operation for both first cycles following an extended off period, and subsequent freeze cycles during continuous freeze and harvest operation, over a range of ambient and inlet water conditions.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Production, Working, Storing, Or Distribution Of Ice (AREA)
EP14159225.3A 2013-03-15 2014-03-12 Verfahren und System zur Steuerung der Initiierung einer vorgegebenen Gefrierzykluszeit in einem Eiserzeuger Withdrawn EP2778570A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US201361793912P 2013-03-15 2013-03-15

Publications (2)

Publication Number Publication Date
EP2778570A2 true EP2778570A2 (de) 2014-09-17
EP2778570A3 EP2778570A3 (de) 2016-08-17

Family

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Application Number Title Priority Date Filing Date
EP14159225.3A Withdrawn EP2778570A3 (de) 2013-03-15 2014-03-12 Verfahren und System zur Steuerung der Initiierung einer vorgegebenen Gefrierzykluszeit in einem Eiserzeuger

Country Status (7)

Country Link
US (1) US20140260349A1 (de)
EP (1) EP2778570A3 (de)
KR (1) KR20140113885A (de)
CN (1) CN104048459A (de)
AU (1) AU2014201376B2 (de)
IN (1) IN2014DE00734A (de)
TW (1) TW201447203A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3425310A1 (de) * 2017-07-07 2019-01-09 Vestel Beyaz Esya Sanayi Ve Ticaret A.S. Betriebsverfahren für kühlvorrichtungen

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10801768B2 (en) * 2018-08-06 2020-10-13 Haier Us Appliance Solutions, Inc. Ice making assemblies for making clear ice
KR102696156B1 (ko) * 2018-12-12 2024-08-19 엘지전자 주식회사 아이스 머신
CN110631299B (zh) * 2019-09-24 2021-08-24 合肥美的电冰箱有限公司 制冰机及其控制方法与装置
CN116911074B (zh) * 2023-09-11 2024-01-16 潍柴动力股份有限公司 冷冻砂型预冷仓的开启时间确定方法、装置和预冷仓

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55146369A (en) * 1979-05-02 1980-11-14 Sanyo Electric Co Ice making machine
US4257237A (en) * 1979-05-15 1981-03-24 King-Seeley Thermos Co. Electrical control circuit for ice making machine
US4373345A (en) * 1981-04-08 1983-02-15 Lewis Tyree Jr Ice-making and water-heating
JP2503424B2 (ja) * 1986-07-17 1996-06-05 株式会社豊田自動織機製作所 冷凍サイクルにおける蒸発温度の制御方法
US4774814A (en) * 1986-09-05 1988-10-04 Mile High Equipment Company Ice making machine
US4947653A (en) * 1989-06-26 1990-08-14 Hussmann Corporation Ice making machine with freeze and harvest control
JP2854078B2 (ja) * 1990-03-12 1999-02-03 三洋電機株式会社 製氷機の運転制御装置
US5090210A (en) * 1990-03-12 1992-02-25 Sanyo Electric Co., Ltd. Control system for ice making apparatuses
JP3071073B2 (ja) * 1993-07-23 2000-07-31 三洋電機株式会社 製氷機
US5653114A (en) * 1995-09-01 1997-08-05 Nartron Corporation Method and system for electronically controlling the location of the formation of ice within a closed loop water circulating unit
US5878583A (en) * 1997-04-01 1999-03-09 Manitowoc Foodservice Group, Inc. Ice making machine and control method therefore
JP2002277121A (ja) * 2001-03-19 2002-09-25 Sanyo Electric Co Ltd セルタイプ製氷機
US6601399B2 (en) * 2001-07-09 2003-08-05 Hoshizaki Denki Kabushiki Kaisha Ice making machine
US7281386B2 (en) * 2005-06-14 2007-10-16 Manitowoc Foodservice Companies, Inc. Residential ice machine
KR101156905B1 (ko) * 2009-09-30 2012-06-21 웅진코웨이주식회사 제빙기 및 그 제어방법

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3425310A1 (de) * 2017-07-07 2019-01-09 Vestel Beyaz Esya Sanayi Ve Ticaret A.S. Betriebsverfahren für kühlvorrichtungen

Also Published As

Publication number Publication date
EP2778570A3 (de) 2016-08-17
CN104048459A (zh) 2014-09-17
KR20140113885A (ko) 2014-09-25
TW201447203A (zh) 2014-12-16
AU2014201376A1 (en) 2014-10-02
AU2014201376B2 (en) 2016-07-14
IN2014DE00734A (de) 2015-06-19
US20140260349A1 (en) 2014-09-18

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