WO2012003202A3 - Evaporator refrigerant saturation demand defrost - Google Patents

Evaporator refrigerant saturation demand defrost Download PDF

Info

Publication number
WO2012003202A3
WO2012003202A3 PCT/US2011/042311 US2011042311W WO2012003202A3 WO 2012003202 A3 WO2012003202 A3 WO 2012003202A3 US 2011042311 W US2011042311 W US 2011042311W WO 2012003202 A3 WO2012003202 A3 WO 2012003202A3
Authority
WO
WIPO (PCT)
Prior art keywords
temperature differential
heat exchanger
defrost
evaporator heat
saturation temperature
Prior art date
Application number
PCT/US2011/042311
Other languages
French (fr)
Other versions
WO2012003202A2 (en
Inventor
Raymond Senf, Jr.
Original Assignee
Carrier Corporation
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 Carrier Corporation filed Critical Carrier Corporation
Priority to CN201180042426.8A priority Critical patent/CN103069230B/en
Priority to EP11730522.7A priority patent/EP2588819B1/en
Priority to ES11730522T priority patent/ES2762238T3/en
Priority to US13/704,314 priority patent/US20130086929A1/en
Publication of WO2012003202A2 publication Critical patent/WO2012003202A2/en
Publication of WO2012003202A3 publication Critical patent/WO2012003202A3/en

Links

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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/002—Defroster control
    • F25D21/006—Defroster control with electronic control circuits
    • 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
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • 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
    • 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
    • F25B2700/21172—Temperatures of an evaporator of the fluid cooled by the evaporator at the inlet

Landscapes

  • 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)
  • Defrosting Systems (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

A method is disclosed for controlling initiation of a defrost cycle of an evaporator heat exchanger of a refrigeration system operatively associated with a refrigerated transport cargo box. The method includes the steps of establishing an return air-saturation temperature differential equal to the difference of a sensed air temperature of an air flow returning from the cargo box to pass over the heat exchange surface of the evaporator heat exchanger minus a refrigerant saturation temperature of a flow of refrigerant passing through the evaporator heat exchanger, comparing the return air-saturation temperature differential to a set point threshold defrost temperature differential, and if the return air-saturation temperature differential exceeds the set point threshold defrost temperature differential, initiating a defrost cycle for defrosting the evaporator heat exchanger.
PCT/US2011/042311 2010-07-01 2011-06-29 Evaporator refrigerant saturation demand defrost WO2012003202A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201180042426.8A CN103069230B (en) 2010-07-01 2011-06-29 Evaporator refrigerant saturation defrosts immediately
EP11730522.7A EP2588819B1 (en) 2010-07-01 2011-06-29 Evaporator refrigerant saturation demand defrost
ES11730522T ES2762238T3 (en) 2010-07-01 2011-06-29 Defrost on demand with evaporator refrigerant saturation
US13/704,314 US20130086929A1 (en) 2010-07-01 2011-06-29 Evaporator refrigerant saturation demand defrost

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US36065110P 2010-07-01 2010-07-01
US61/360,651 2010-07-01

Publications (2)

Publication Number Publication Date
WO2012003202A2 WO2012003202A2 (en) 2012-01-05
WO2012003202A3 true WO2012003202A3 (en) 2012-08-16

Family

ID=44628120

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/042311 WO2012003202A2 (en) 2010-07-01 2011-06-29 Evaporator refrigerant saturation demand defrost

Country Status (5)

Country Link
US (1) US20130086929A1 (en)
EP (1) EP2588819B1 (en)
CN (1) CN103069230B (en)
ES (1) ES2762238T3 (en)
WO (1) WO2012003202A2 (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014022269A2 (en) * 2012-07-31 2014-02-06 Carrier Corporation Frozen evaporator coil detection and defrost initiation
EP2717002B1 (en) * 2012-10-08 2019-01-02 Emerson Climate Technologies GmbH Method for determining thaw times
EP2914915B1 (en) 2012-10-30 2018-01-10 Carrier Corporation Drying a refrigerated cargo box following wash out prior to loading
CN104515255A (en) * 2013-09-30 2015-04-15 郑州科林车用空调有限公司 Method and system of passenger car air conditioner for regulating temperature through intelligent combined control on temperature and humidity
US10254027B2 (en) * 2014-05-02 2019-04-09 Thermo King Corporation Method and system for controlling operation of evaporator fans in a transport refrigeration system
US20150343881A1 (en) * 2014-05-27 2015-12-03 Alliance For Sustainable Energy, Llc Evaporative cooling cycling using water condensate formed in a vapor-compression a/c system evaporator
EP3183515B1 (en) * 2014-08-22 2024-04-10 Thermo King LLC Method and system for defrosting a heat exchanger
US10935329B2 (en) 2015-01-19 2021-03-02 Hussmann Corporation Heat exchanger with heater insert
EP3311085B1 (en) 2015-06-19 2022-02-09 Carrier Corporation Transport refrigeration unit and method of operating the same
US10168067B2 (en) * 2015-09-22 2019-01-01 Lennox Industries Inc. Detecting and handling a blocked condition in the coil
CN108137069B (en) 2015-10-16 2020-12-25 开利公司 Flexible cooling system for vehicle
US10845096B2 (en) * 2015-10-27 2020-11-24 Denso Corporation Refrigeration cycle device
JP6611829B2 (en) * 2016-02-05 2019-11-27 三菱電機株式会社 Air conditioner
DK3426512T3 (en) 2016-03-07 2023-10-23 Carrier Corp PROCEDURE FOR DE-ICEING A RETURN AIR INTAKE
US20170292770A1 (en) * 2016-04-07 2017-10-12 Hussmann Corporation Refrigeration system with fluid defrost
US10759326B2 (en) 2016-05-27 2020-09-01 Carrier Corporation Method for determining reduced airflow in transport refrigeration system
CN106839258A (en) * 2016-12-06 2017-06-13 珠海格力电器股份有限公司 Air cooler and defrosting control device and method thereof
WO2019199386A1 (en) 2018-04-13 2019-10-17 Carrier Corporation Method of defrosting a refrigeration system
US11493260B1 (en) 2018-05-31 2022-11-08 Thermo Fisher Scientific (Asheville) Llc Freezers and operating methods using adaptive defrost
EP3587962B1 (en) 2018-06-22 2020-12-30 Danfoss A/S A method for terminating defrosting of an evaporator by use of air temperature measurements
EP3990845B1 (en) 2019-06-26 2024-04-17 Carrier Corporation Transportation refrigeration unit with adaptive defrost
CN112594983A (en) * 2020-12-08 2021-04-02 格力电器（合肥）有限公司 Refined forward circulating deicing system of air conditioner and control method
EP4148348A1 (en) * 2021-09-09 2023-03-15 SHR GmbH Method and apparatus for controlling the cleaning and cooling process of heat exchangers
CN116263263A (en) * 2021-12-13 2023-06-16 开利公司 Method for changing defrosting trigger of heat pump

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3333907A1 (en) * 1983-09-20 1985-04-04 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München METHOD AND DEVICE FOR DEFROSTING HEAT PUMPS
DE3441912A1 (en) * 1984-11-16 1986-05-28 Fichtel & Sachs Ag, 8720 Schweinfurt Method for automatically defrosting an evaporator, acted upon by air, of a heat pump
DE3539817A1 (en) * 1985-11-09 1987-05-14 Licentia Gmbh Method for metrologically determining, displaying and/or evaluating the icing occurring on the cooling plates of an air cooler
EP0501387A2 (en) * 1991-02-25 1992-09-02 KÜBA KÄLTETECHNIK GmbH Method and device for performance optimising and defrosting control of refrigerant evaporators
US6205800B1 (en) * 1999-05-12 2001-03-27 Carrier Corporation Microprocessor controlled demand defrost for a cooled enclosure
DE10311343A1 (en) * 2003-03-14 2004-09-23 Linde Kältetechnik GmbH & Co. KG Defrosting method for e.g. evaporator, involves initiating defrosting when temperature at middle of evaporator is lower than critical temperature or temperature difference between middle and inlet of evaporator is lower than set value
EP2157380A1 (en) * 2008-01-21 2010-02-24 Mitsubishi Electric Corporation Heat pump apparatus and air conditioner or water heater having the heat pump apparatus mounted thereon
EP2366968A2 (en) * 2010-03-17 2011-09-21 Wolf GmbH Method and device for thawing an evaporator of a heat pump device

Family Cites Families (11)

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US4142374A (en) * 1977-09-16 1979-03-06 Wylain, Inc. Demand defrost time clock control circuit
US5381669A (en) * 1993-07-21 1995-01-17 Copeland Corporation Overcharge-undercharge diagnostic system for air conditioner controller
US5440890A (en) * 1993-12-10 1995-08-15 Copeland Corporation Blocked fan detection system for heat pump
US6223546B1 (en) 1999-04-21 2001-05-01 Robert A. Chopko Electrically powered transport refrigeration unit
US6334321B1 (en) * 2000-03-15 2002-01-01 Carrier Corporation Method and system for defrost control on reversible heat pumps
US6318095B1 (en) 2000-10-06 2001-11-20 Carrier Corporation Method and system for demand defrost control on reversible heat pumps
US8136363B2 (en) * 2005-04-15 2012-03-20 Thermo King Corporation Temperature control system and method of operating the same
WO2007013382A1 (en) * 2005-07-26 2007-02-01 Mitsubishi Electric Corporation Refrigerating air conditioner
US7752853B2 (en) * 2005-10-21 2010-07-13 Emerson Retail Services, Inc. Monitoring refrigerant in a refrigeration system
US20100107661A1 (en) * 2007-02-02 2010-05-06 Awwad Nader S Method for operating transport refrigeration unit with remote evaporator
JP4642100B2 (en) * 2008-09-01 2011-03-02 三菱電機株式会社 Heat pump equipment

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3333907A1 (en) * 1983-09-20 1985-04-04 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München METHOD AND DEVICE FOR DEFROSTING HEAT PUMPS
DE3441912A1 (en) * 1984-11-16 1986-05-28 Fichtel & Sachs Ag, 8720 Schweinfurt Method for automatically defrosting an evaporator, acted upon by air, of a heat pump
DE3539817A1 (en) * 1985-11-09 1987-05-14 Licentia Gmbh Method for metrologically determining, displaying and/or evaluating the icing occurring on the cooling plates of an air cooler
EP0501387A2 (en) * 1991-02-25 1992-09-02 KÜBA KÄLTETECHNIK GmbH Method and device for performance optimising and defrosting control of refrigerant evaporators
US6205800B1 (en) * 1999-05-12 2001-03-27 Carrier Corporation Microprocessor controlled demand defrost for a cooled enclosure
DE10311343A1 (en) * 2003-03-14 2004-09-23 Linde Kältetechnik GmbH & Co. KG Defrosting method for e.g. evaporator, involves initiating defrosting when temperature at middle of evaporator is lower than critical temperature or temperature difference between middle and inlet of evaporator is lower than set value
EP2157380A1 (en) * 2008-01-21 2010-02-24 Mitsubishi Electric Corporation Heat pump apparatus and air conditioner or water heater having the heat pump apparatus mounted thereon
EP2366968A2 (en) * 2010-03-17 2011-09-21 Wolf GmbH Method and device for thawing an evaporator of a heat pump device

Also Published As

Publication number Publication date
ES2762238T3 (en) 2020-05-22
CN103069230B (en) 2017-08-04
CN103069230A (en) 2013-04-24
EP2588819A2 (en) 2013-05-08
US20130086929A1 (en) 2013-04-11
WO2012003202A2 (en) 2012-01-05
EP2588819B1 (en) 2019-12-11

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