WO2010091181A1 - Amélioration de la distribution de température dans un récipient réfrigéré - Google Patents

Amélioration de la distribution de température dans un récipient réfrigéré Download PDF

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Publication number
WO2010091181A1
WO2010091181A1 PCT/US2010/023196 US2010023196W WO2010091181A1 WO 2010091181 A1 WO2010091181 A1 WO 2010091181A1 US 2010023196 W US2010023196 W US 2010023196W WO 2010091181 A1 WO2010091181 A1 WO 2010091181A1
Authority
WO
WIPO (PCT)
Prior art keywords
fan
container
air
refrigeration machine
container box
Prior art date
Application number
PCT/US2010/023196
Other languages
English (en)
Inventor
Yu H. Chen
Paul Chen
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 DK10739123.7T priority Critical patent/DK2394111T3/en
Priority to CN201080007100.7A priority patent/CN102308165B/zh
Priority to SG2011056272A priority patent/SG173543A1/en
Priority to EP10739123.7A priority patent/EP2394111B1/fr
Priority to US13/146,104 priority patent/US20110283719A1/en
Publication of WO2010091181A1 publication Critical patent/WO2010091181A1/fr

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
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/003—Transport containers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/0001—Control or safety arrangements for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F2007/005—Cyclic ventilation, e.g. alternating air supply volume or reversing flow direction
    • 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
    • F25D17/005—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces in cold rooms
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
    • F25D2317/0684—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans the fans allowing rotation in reverse direction

Definitions

  • This invention relates generally to refrigerated containers and, more particularly, to a method and apparatus for obtaining a more uniform temperature distribution therein.
  • Refrigerated containers are used to transport perishable cargo that requires very tight temperature control.
  • the industry standard today is to have the refrigeration machine mounted at one end of the container box.
  • the air in the container box is drawn into the refrigeration machine by fans which then blow the warmer air through an evaporator coil, with the cooled air then passing back into the container box to cool the cargo.
  • the common problem with this arrangement is that the cargo's temperature tends to be higher towards the back door of the container and away from the refrigeration machine.
  • the main reason is due to poor airflow distribution from the front to the back of the container box, with airflow being reduced significantly toward the back door.
  • the temperature of the cargo is generally higher as it extends toward the rear door.
  • the problem is exacerbated by the fact that the typical perishable cargo gives off heat of its own.
  • the direction of the fan rotation is periodically reversed to thereby cause the direction of the airflow from and to the refrigerated container to be reversed to thereby improve the temperature distribution in the container box.
  • a plenum is provided at the top of the container box and is closed during the reverse operation in order to increase the airflow speed.
  • FIG. 1 is a perspective view of a refrigerated container with the present invention incorporated therein.
  • FIG. 2 is a schematic illustration thereof showing the airflow therein during normal operation.
  • FIG. 3 is a graphic illustration of the temperature distribution therein during normal operation.
  • FIG. 4 is a schematic illustration of the airflow pattern which results in a refrigerated container when operated in accordance with the present invention.
  • FIG. 5A and 5B are perspective views of a door portion thereof during normal and reverse flow operation thereof.
  • a refrigerated container is shown generally at 11 as including a container box 12 having bottom and top sides 13 and 14 and front and rear ends 16 and 17.
  • the container box 12 is designed to temporarily hold perishable cargo as shown at 18.
  • the refrigeration machine 19 is installed in such a manner as to fluidly communicate with the air in the container box 12 in order to cool that air for the purpose of refrigerating the cargo 18.
  • the refrigeration machine 19 includes a standard refrigeration circuit comprising, in serial flow relationship, a compressor, a condenser, an expansion device and an evaporator. It is by the flow of the return air from the container box 12 and through the evaporator, that the air in the container box 12 is cooled. Circulation of air through the evaporator and into and out of the container box 12 as shown in Fig. 1 is caused by operation of a fan 21 within the refrigeration machine 19. [0013] As will be seen in Fig.
  • the fan 21 is located near a top portion 22 of the refrigeration machine 19 which, during normal operation, acts to draw the return air forwardly along a top portion 23 of the container box 12 and through an open door 24.
  • the warm air is then blown through the evaporator coil 24 where the air is cooled, with the cooled air then being discharged from a lower portion 26 of the refrigeration machine 19.
  • the cooled air flows rearwardly through a bottom portion 27 of the container box 12 as shown by the arrows.
  • the cooler air rises upwardly through a t-bar floor as indicated by the upwardly extending arrows.
  • the cooled air passes upwardly through the cargo 18 with heat being transferred thereto from the cargo 18.
  • the warmer air then continues upwardly to enter the top portion 23 of the container box 12 to complete the cycle.
  • the cooled air travels rearwardly, it gradually becomes warmer such that when it reaches the rear end 17 it is at its higher temperature.
  • the velocity of flow will be reduced as its extends toward the rear wall 17. For that reason, a substantial temperature gradient will exist both in the vertical direction and in the horizontal direction, within the container box 12. Since the cargo is exposed to this distribution of air for long periods of time such as days or even weeks, the temperature of the cargo 18 within the container box reflects a similar temperature distribution. This cargo temperature distribution is shown in Fig. 3.
  • the cooler cargo will be in the lower left portion of the container box and the warmer cargo will be at the upper right portion thereof.
  • the perishable cargo temperature distribution in a container determines the shelf life of the cargo.
  • the shelf life of the cargo will be variable as indicated by the temperature distribution in Fig. 3. It is thus desirable to eliminate the hot spots and promote a more uniform temperature distribution within the container box 12. This is accomplished by operation of the system as shown in Fig. 4.
  • the fan 21 is caused to operate in reverse so as to draw air through the evaporator coil 14 rather than blow air therethrough.
  • This causes an associated reversal of airflow through the container box 12 as shown by the arrows. That is, the cooled air from the evaporator coil 24 passes upwardly through the fan 21 and into the top portion 22 of the refrigeration machine 19. From there it passes through the opening 30 and into the top portion 23 of the container box 12 to then flow rearwardly and downwardly as indicated by the arrows. The cooled air passes through the cargo 18 and then downwardly into the bottom portion 27 of the container box 12 before returning forwardly to the bottom portion 26 of the refrigeration machine 19 to complete the cycle.
  • This reversal of flow causes mixing of the air within the container box 12 so as to thereby promote a more uniform distribution.
  • the door 25 is provided at the front end of the container top portion 23 as shown in Figs. 5 A and 5B. That is, as shown in Fig. 5 A, during normal operation the return airflow causes the door 25 to open and allow the air to flow freely across the entire cross section of the top portion 23 as shown. However, in reverse flow operation, the flow of air will cause the door 25 to be moved to the closed position such that the opening 30 is of reduced cross section as shown in Fig. 5B. This will, in turn, cause the velocity of the airflow therethrough to increase, which will provide better "throw” and further promote mixing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

Le ventilateur d'une machine de réfrigération reliée de manière fonctionnelle à un conteneur est actionné dans une direction pendant le fonctionnement normal et est périodiquement actionné dans la direction opposée afin d'inverser la direction du flux d'air vers et depuis le conteneur de sorte à favoriser de cette façon une distribution de température plus uniforme à l'intérieur du conteneur. Une porte est automatiquement fermée lorsqu'elle fonctionne dans la direction inverse de sorte à accélérer la vitesse du flux d'air dans le conteneur.
PCT/US2010/023196 2009-02-09 2010-02-04 Amélioration de la distribution de température dans un récipient réfrigéré WO2010091181A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DK10739123.7T DK2394111T3 (en) 2009-02-09 2010-02-04 IMPROVED TEMPERATURE DISTRIBUTION IN REFRIGERANT CONTAINERS
CN201080007100.7A CN102308165B (zh) 2009-02-09 2010-02-04 冷藏货柜中的温度分布改善
SG2011056272A SG173543A1 (en) 2009-02-09 2010-02-04 Temperature distribution improvement in refrigerated container
EP10739123.7A EP2394111B1 (fr) 2009-02-09 2010-02-04 Amélioration de la distribution de température dans un récipient réfrigéré
US13/146,104 US20110283719A1 (en) 2009-02-09 2010-02-04 Temperature distribution improvement in refrigerated container

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15101609P 2009-02-09 2009-02-09
US61/151,016 2009-02-09

Publications (1)

Publication Number Publication Date
WO2010091181A1 true WO2010091181A1 (fr) 2010-08-12

Family

ID=42542381

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2010/023196 WO2010091181A1 (fr) 2009-02-09 2010-02-04 Amélioration de la distribution de température dans un récipient réfrigéré

Country Status (6)

Country Link
US (1) US20110283719A1 (fr)
EP (1) EP2394111B1 (fr)
CN (1) CN102308165B (fr)
DK (1) DK2394111T3 (fr)
SG (1) SG173543A1 (fr)
WO (1) WO2010091181A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012017301A1 (fr) * 2010-08-04 2012-02-09 Stellenbosch University Conteneur de transport réfrigéré
CN102788468A (zh) * 2011-05-17 2012-11-21 Bsh博世和西门子家用电器有限公司 具有风扇的家用制冷器具
CN103964088A (zh) * 2013-01-28 2014-08-06 中国国际海运集装箱(集团)股份有限公司 通风装置和具有该通风装置的冷藏集装箱
WO2021176016A1 (fr) * 2020-03-05 2021-09-10 Maersk Container Industry A/S Unité de transport et procédé de commande dispositif d'une atmosphère à l'intérieur de celle-ci
US11536505B2 (en) 2015-10-09 2022-12-27 Innovation Thru Energy Co., Ltd. Cold storage system for transport

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US20100258642A1 (en) * 2008-09-22 2010-10-14 Newcomer Douglas A Enviromental control systems and methods of configuring environmental control systems
GB2552084B (en) 2014-01-29 2018-08-01 Illinois Tool Works A locker system
CN104879977A (zh) * 2014-02-28 2015-09-02 株式会社电装 调温贮藏装置
CN105758164A (zh) * 2016-04-29 2016-07-13 谢东波 一种密闭空间的均衡循环系统
CN107401874A (zh) * 2017-09-13 2017-11-28 珠海格力电器股份有限公司 货箱及其送风控制方法
WO2019229933A1 (fr) * 2018-05-31 2019-12-05 日立ジョンソンコントロールズ空調株式会社 Climatiseur
AR117003A1 (es) * 2019-11-06 2021-06-30 Juan Domingo Lombard Método para la reducción de la merma de enfriado de una canal
CN111895713A (zh) * 2020-06-24 2020-11-06 卧龙电气驱动集团股份有限公司 一种运用于冰箱风道的均匀出风装置及控制方法

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WO1988008111A1 (fr) * 1987-04-08 1988-10-20 Thermo King Corporation Systeme de refrigeration pour le transport de marchandises
WO1997039639A1 (fr) 1996-04-24 1997-10-30 Cool Care, Ltd. Systeme destine au murissement regule de produits frais
US5816053A (en) 1997-05-08 1998-10-06 Cloverdale Foods Company Apparatus and methods for cooling and tempering processed food products
JPH10325668A (ja) * 1997-05-28 1998-12-08 Daikin Ind Ltd 冷凍コンテナ
US5916253A (en) * 1998-05-04 1999-06-29 Carrier Corporation Compact trailer refrigeration unit

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Publication number Priority date Publication date Assignee Title
WO1988008111A1 (fr) * 1987-04-08 1988-10-20 Thermo King Corporation Systeme de refrigeration pour le transport de marchandises
WO1997039639A1 (fr) 1996-04-24 1997-10-30 Cool Care, Ltd. Systeme destine au murissement regule de produits frais
US5816053A (en) 1997-05-08 1998-10-06 Cloverdale Foods Company Apparatus and methods for cooling and tempering processed food products
JPH10325668A (ja) * 1997-05-28 1998-12-08 Daikin Ind Ltd 冷凍コンテナ
US5916253A (en) * 1998-05-04 1999-06-29 Carrier Corporation Compact trailer refrigeration unit

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See also references of EP2394111A4

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012017301A1 (fr) * 2010-08-04 2012-02-09 Stellenbosch University Conteneur de transport réfrigéré
CN102788468A (zh) * 2011-05-17 2012-11-21 Bsh博世和西门子家用电器有限公司 具有风扇的家用制冷器具
CN103964088A (zh) * 2013-01-28 2014-08-06 中国国际海运集装箱(集团)股份有限公司 通风装置和具有该通风装置的冷藏集装箱
CN103964088B (zh) * 2013-01-28 2017-10-31 中国国际海运集装箱(集团)股份有限公司 通风装置和具有该通风装置的冷藏集装箱
US11536505B2 (en) 2015-10-09 2022-12-27 Innovation Thru Energy Co., Ltd. Cold storage system for transport
WO2021176016A1 (fr) * 2020-03-05 2021-09-10 Maersk Container Industry A/S Unité de transport et procédé de commande dispositif d'une atmosphère à l'intérieur de celle-ci
DK202000297A1 (en) * 2020-03-05 2021-10-26 Maersk Container Ind A/S Transport unit and method of controlling an atmosphere therein

Also Published As

Publication number Publication date
EP2394111B1 (fr) 2016-10-12
CN102308165A (zh) 2012-01-04
EP2394111A4 (fr) 2015-08-26
CN102308165B (zh) 2014-06-18
SG173543A1 (en) 2011-09-29
US20110283719A1 (en) 2011-11-24
DK2394111T3 (en) 2017-01-23
EP2394111A1 (fr) 2011-12-14

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