EP3044525A1 - Kick plate for refrigerated container assembly - Google Patents

Kick plate for refrigerated container assembly

Info

Publication number
EP3044525A1
EP3044525A1 EP14748008.1A EP14748008A EP3044525A1 EP 3044525 A1 EP3044525 A1 EP 3044525A1 EP 14748008 A EP14748008 A EP 14748008A EP 3044525 A1 EP3044525 A1 EP 3044525A1
Authority
EP
European Patent Office
Prior art keywords
cargo container
refrigeration unit
baffle plate
kick plate
refrigerated
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.)
Granted
Application number
EP14748008.1A
Other languages
German (de)
French (fr)
Other versions
EP3044525B1 (en
Inventor
Mingfei Gan
Keonwoo Lee
Yue JIA
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.)
Carrier Corp
Original Assignee
Carrier Corp
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 Corp filed Critical Carrier Corp
Publication of EP3044525A1 publication Critical patent/EP3044525A1/en
Application granted granted Critical
Publication of EP3044525B1 publication Critical patent/EP3044525B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/74—Large containers having means for heating, cooling, aerating or other conditioning of contents
    • B65D88/745—Large containers having means for heating, cooling, aerating or other conditioning of contents blowing or injecting heating, cooling or other conditioning fluid inside the container
    • 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
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • 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
    • 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
    • F25D2317/067—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 air ducts

Definitions

  • the subject matter disclosed herein relates to refrigeration systems. More specifically, the subject matter disclosed herein relates to air distribution in refrigerated containers utilized to store and ship cargo.
  • a typical refrigerated cargo container such as those utilized to transport a cargo via sea, rail or road, is a container equipped with a refrigeration unit located at one end of the container.
  • the refrigeration unit includes a compressor, condenser, expansion valve and evaporator coil, all located at the end of the container.
  • a volume of refrigerant circulates throughout the refrigeration unit, and one or more evaporator fans of the refrigeration unit blow a flow of supply air across the evaporator coil cooling the supply air and forcing it out into the container.
  • the supply air is typically forced downwardly into a kick plate located at a bottom of the refrigeration unit, which is used to direct the supply air to discharge along the cargo container floor, for example, through t-bars arrayed along the floor.
  • a portion of the supply air flows outward and upward from the kick plate, not into the t-bars, but filling side passages between a side wall of the container and a side wall of the refrigeration unit, in some designs.
  • the side passages are closed by a side plate extending vertically between the container side wall and the refrigeration unit to prevent supply air from being discharged directly from the side passages into the cargo container without passing through the t-bars.
  • the side passages also reduce the velocity of supply air discharged through the t- bars along the side walls of the cargo container compared to that discharged nearer the center of the cargo container, resulting in uneven temperature distribution, "hot” and “cold” spots, in the cargo container.
  • a refrigerated transportation cargo container includes a transportation cargo container and a refrigeration unit disposed at an end of the transportation cargo container to provide a flow of supply air for the transportation cargo container.
  • the refrigeration unit includes a housing and an evaporator fan to circulate the flow of supply air through the refrigeration unit.
  • a kick plate assembly includes a kick plate extending from the refrigeration unit toward a floor of the cargo container and a baffle plate extending between the refrigeration unit and a sidewall of the cargo container. The kick plate assembly defines a discharge cavity to direct the flow of supply air toward the floor of the cargo container.
  • a method of cooling a refrigerated cargo container includes circulating a supply airflow across an evaporator of a refrigeration unit disposed in the cargo container.
  • the supply airflow is cooled at the evaporator.
  • the supply airflow is directed through a kick plate assembly.
  • the kick plate assembly includes a kick plate extending from the refrigeration unit toward a floor of the cargo container and a baffle plate extending between the refrigeration unit and a sidewall of the cargo container.
  • the supply airflow is flowed from the kick plate assembly along the floor of the cargo container.
  • FIG. 1 is a schematic illustration of an embodiment of a refrigerated transportation cargo container
  • FIG. 2 is a schematic illustration of an embodiment of a refrigeration unit for a refrigerated transportation cargo container
  • FIG. 3 is a cross-sectional view of an embodiment of a refrigeration unit for a refrigerated transportation cargo container.
  • FIG. 1 Shown in FIG. 1 is an embodiment of a refrigerated cargo container 10.
  • the cargo container 10 is formed into a generally rectangular construction, with a ceiling 12, a directly opposed floor 14, opposed side walls 16 and a front wall 18.
  • the cargo container 10 further includes a door or doors (not shown) at a rear wall 20, opposite the front wall 18.
  • the cargo container 10 is configured to maintain a cargo 22 located inside the cargo container 10 at a selected temperature through the use of a refrigeration unit 24 located at the container 10.
  • the cargo container 10 is mobile and is utilized to transport the cargo 22 via, for example, a truck, a train or a ship.
  • the refrigeration unit 24 is located at the front wall 18, and includes a compressor 26, a condenser 28, an expansion valve 30, an evaporator 32 and an evaporator fan 34 (shown in FIG. 2), as well as other ancillary components.
  • the refrigeration unit 24 blows return airflow 36 across the evaporator 32 via the evaporator fan 34, thus cooling the airflow 36 to a selected temperature and urges the cooled return airflow 36, now referred to as supply air 38, through a kick plate assembly 40 into the container 10 via, for example, openings 42 in one or more T-bars 44 extending along the floor 14 of the container 10 to cool the cargo 22.
  • the kick plate assembly 40 includes a kick plate 46 that forms a discharge cavity 48 at a bottom portion of the refrigeration unit 24 to evenly distribute the supply air 38 along a width 50 (FIG.3 ) of the cargo container 10 into the T-bars 44.
  • the kick plate assembly 40 and the discharge cavity 48 are located below the refrigeration unit 24, between the refrigeration unit 24 and the floor 14 of the cargo container 10.
  • the cargo container 10 is configured with a side passage 52 between a refrigeration unit sidewall 54 and the sidewall 16 of the cargo container 10.
  • the kick plate assembly 40 is configured with a baffle plate 56 extending laterally from the refrigeration unit sidewall 54 to the side wall 16 of the cargo container 10.
  • the baffle plate 56 prevents flow of the supply air 38 into the side passage 52 and directs the supply air 38 into the T-bars 44.
  • the baffle plate 56 may be secured in a fixed position relative to the kick plate 46, may be secured to the kick plate 46 via one or more hinges 58 for better serviceability and to allow the kick plate assembly 40 to be adapted to different configurations of cargo container 10 and/or refrigeration unit 24.
  • the baffle plate 56 includes a peripheral seal 60 to reduce leakage of the supply air 38 around the baffle plate 56 into the side passage 52.

Landscapes

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

Abstract

A refrigerated transportation cargo container includes a transportation cargo container and a refrigeration unit disposed at an end of the transportation cargo container to provide a flow of supply air for the transportation cargo container. The refrigeration unit includes a housing and an evaporator fan (34) to urge the flow of supply air through the refrigeration unit. A kick plate assembly (40) includes a kick plate (46) extending from the refrigeration unit toward a floor of the cargo container and a baffle plate extending between the refrigeration unit and a sidewall of the cargo container. The kick plate assembly defines a discharge cavity to direct the flow of supply air toward the floor of the cargo container.

Description

KICK PLATE FOR REFRIGERATED CONTAINER ASSEMBLY
BACKGROUND OF THE INVENTION
[0001] The subject matter disclosed herein relates to refrigeration systems. More specifically, the subject matter disclosed herein relates to air distribution in refrigerated containers utilized to store and ship cargo.
[0002] A typical refrigerated cargo container, such as those utilized to transport a cargo via sea, rail or road, is a container equipped with a refrigeration unit located at one end of the container. The refrigeration unit includes a compressor, condenser, expansion valve and evaporator coil, all located at the end of the container. A volume of refrigerant circulates throughout the refrigeration unit, and one or more evaporator fans of the refrigeration unit blow a flow of supply air across the evaporator coil cooling the supply air and forcing it out into the container.
[0003] The supply air is typically forced downwardly into a kick plate located at a bottom of the refrigeration unit, which is used to direct the supply air to discharge along the cargo container floor, for example, through t-bars arrayed along the floor. A portion of the supply air flows outward and upward from the kick plate, not into the t-bars, but filling side passages between a side wall of the container and a side wall of the refrigeration unit, in some designs. The side passages are closed by a side plate extending vertically between the container side wall and the refrigeration unit to prevent supply air from being discharged directly from the side passages into the cargo container without passing through the t-bars. The side passages, however, also reduce the velocity of supply air discharged through the t- bars along the side walls of the cargo container compared to that discharged nearer the center of the cargo container, resulting in uneven temperature distribution, "hot" and "cold" spots, in the cargo container.
BRIEF DESCRIPTION OF THE INVENTION
[0004] In one embodiment, a refrigerated transportation cargo container includes a transportation cargo container and a refrigeration unit disposed at an end of the transportation cargo container to provide a flow of supply air for the transportation cargo container. The refrigeration unit includes a housing and an evaporator fan to circulate the flow of supply air through the refrigeration unit. A kick plate assembly includes a kick plate extending from the refrigeration unit toward a floor of the cargo container and a baffle plate extending between the refrigeration unit and a sidewall of the cargo container. The kick plate assembly defines a discharge cavity to direct the flow of supply air toward the floor of the cargo container.
[0005] In another embodiment, a method of cooling a refrigerated cargo container includes circulating a supply airflow across an evaporator of a refrigeration unit disposed in the cargo container. The supply airflow is cooled at the evaporator. The supply airflow is directed through a kick plate assembly. The kick plate assembly includes a kick plate extending from the refrigeration unit toward a floor of the cargo container and a baffle plate extending between the refrigeration unit and a sidewall of the cargo container. The supply airflow is flowed from the kick plate assembly along the floor of the cargo container.
[0006] These and other advantages and features will become more apparent from the following description taken in conjunction with the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] The subject matter, which is regarded as the invention, is particularly pointed out and distinctly claimed in the claims at the conclusion of the specification. The foregoing and other features, and advantages of the invention are apparent from the following detailed description taken in conjunction with the accompanying drawings in which:
[0008] FIG. 1 is a schematic illustration of an embodiment of a refrigerated transportation cargo container;
[0009] FIG. 2 is a schematic illustration of an embodiment of a refrigeration unit for a refrigerated transportation cargo container; and
[0010] FIG. 3 is a cross-sectional view of an embodiment of a refrigeration unit for a refrigerated transportation cargo container.
[0011] The detailed description explains embodiments of the invention, together with advantages and features, by way of example with reference to the drawing.
DETAILED DESCRIPTION OF THE INVENTION
[0012] Shown in FIG. 1 is an embodiment of a refrigerated cargo container 10. The cargo container 10 is formed into a generally rectangular construction, with a ceiling 12, a directly opposed floor 14, opposed side walls 16 and a front wall 18. The cargo container 10 further includes a door or doors (not shown) at a rear wall 20, opposite the front wall 18. The cargo container 10 is configured to maintain a cargo 22 located inside the cargo container 10 at a selected temperature through the use of a refrigeration unit 24 located at the container 10. The cargo container 10 is mobile and is utilized to transport the cargo 22 via, for example, a truck, a train or a ship. The refrigeration unit 24 is located at the front wall 18, and includes a compressor 26, a condenser 28, an expansion valve 30, an evaporator 32 and an evaporator fan 34 (shown in FIG. 2), as well as other ancillary components.
[0013] Referring to FIG. 2, the refrigeration unit 24 blows return airflow 36 across the evaporator 32 via the evaporator fan 34, thus cooling the airflow 36 to a selected temperature and urges the cooled return airflow 36, now referred to as supply air 38, through a kick plate assembly 40 into the container 10 via, for example, openings 42 in one or more T-bars 44 extending along the floor 14 of the container 10 to cool the cargo 22. As shown in FIG. 2, the kick plate assembly 40 includes a kick plate 46 that forms a discharge cavity 48 at a bottom portion of the refrigeration unit 24 to evenly distribute the supply air 38 along a width 50 (FIG.3 ) of the cargo container 10 into the T-bars 44. In some embodiments, the kick plate assembly 40 and the discharge cavity 48 are located below the refrigeration unit 24, between the refrigeration unit 24 and the floor 14 of the cargo container 10.
[0014] Referring to FIG. 3, the cargo container 10 is configured with a side passage 52 between a refrigeration unit sidewall 54 and the sidewall 16 of the cargo container 10. To enhance the even distribution of the supply air 38, the kick plate assembly 40 is configured with a baffle plate 56 extending laterally from the refrigeration unit sidewall 54 to the side wall 16 of the cargo container 10. The baffle plate 56 prevents flow of the supply air 38 into the side passage 52 and directs the supply air 38 into the T-bars 44. The baffle plate 56 may be secured in a fixed position relative to the kick plate 46, may be secured to the kick plate 46 via one or more hinges 58 for better serviceability and to allow the kick plate assembly 40 to be adapted to different configurations of cargo container 10 and/or refrigeration unit 24. Further, in some embodiments, as shown, the baffle plate 56 includes a peripheral seal 60 to reduce leakage of the supply air 38 around the baffle plate 56 into the side passage 52.
[0015] While the invention has been described in detail in connection with only a limited number of embodiments, it should be readily understood that the invention is not limited to such disclosed embodiments. Rather, the invention can be modified to incorporate any number of variations, alterations, substitutions or equivalent arrangements not heretofore described, but which are commensurate with the spirit and scope of the invention. Additionally, while various embodiments of the invention have been described, it is to be understood that aspects of the invention may include only some of the described embodiments. Accordingly, the invention is not to be seen as limited by the foregoing description, but is only limited by the scope of the appended claims.

Claims

CLAIMS:
1. A refrigerated transportation cargo container comprising:
a transportation cargo container; and
a refrigeration unit disposed at an end of the transportation cargo container to provide a flow of supply air for the transportation cargo container, the refrigeration unit including:
a housing;
an evaporator fan to deliver supply air through the refrigeration unit; and a kick plate assembly including:
a kick plate extending from the refrigeration unit toward a floor of the cargo container; and
a baffle plate extending between the refrigeration unit and a sidewall of the cargo container;
wherein the kick plate assembly defines a discharge cavity to direct the flow of supply air toward the floor of the cargo container.
2. The refrigerated transportation cargo container of Claim 1, wherein the baffle plate extends between the refrigeration unit and the sidewall of the cargo container.
3. The refrigerated cargo container of Claim 1, wherein the baffle plate is formed integral to the forward face.
4. The refrigerated cargo container of Claim 1, wherein the baffle plate is attached to the kick plate via a hinged connection.
5. The refrigerated cargo container of Claim 1, wherein the kick plate assembly is disposed beneath the refrigeration unit.
6. The refrigerated cargo container of Claim 1, wherein the baffle plate further includes a peripheral seal to prevent leakage around a periphery of the baffle plate.
7. The refrigerated cargo container of Claim 1, wherein the baffle plate prevents direct flow of supply air from the refrigeration unit into a side cavity between the refrigeration unit and the sidewall of the cargo container.
8. A method of cooling a refrigerated cargo container comprising:
urging a supply airflow across an evaporator of a refrigeration unit disposed in the cargo container;
cooling the supply airflow at the evaporator;
directing the supply airflow through a kick plate assembly, the kick plate assembly including: a kick plate extending from the refrigeration unit toward a floor of the cargo container; and
a baffle plate extending between the refrigeration unit and a sidewall of the cargo container; and
flowing the supply airflow from the kick plate assembly along the floor of the cargo container.
9. The method of Claim 8, wherein the supply airflow is directed through the kick plate assembly disposed beneath the refrigeration unit.
10. The method of Claim 8, further comprising flowing the supply airflow through a plurality of T-bars arrayed along the floor of the cargo container.
11. The method of Claim 8, wherein the baffle plate extends substantially horizontally between the refrigeration unit and the sidewall of the cargo container.
12. The method of Claim 8, wherein the baffle plate is attached to the kick plate via a hinged connection.
13. The method of Claim 8, further comprising sealing a periphery of the baffle plate to prevent leakage of the supply airflow therethrough.
14. The method of Claim 8, further comprising preventing direct flow of supply air from the refrigeration unit into a side cavity between the refrigeration unit and the sidewall of the cargo container via positioning of the baffle plate.
EP14748008.1A 2013-09-10 2014-07-01 Refrigerated transportation cargo container and method of cooling thereof Active EP3044525B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361875901P 2013-09-10 2013-09-10
PCT/US2014/045051 WO2015038222A1 (en) 2013-09-10 2014-07-01 Kick plate for refrigerated container assembly

Publications (2)

Publication Number Publication Date
EP3044525A1 true EP3044525A1 (en) 2016-07-20
EP3044525B1 EP3044525B1 (en) 2019-08-28

Family

ID=51293128

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14748008.1A Active EP3044525B1 (en) 2013-09-10 2014-07-01 Refrigerated transportation cargo container and method of cooling thereof

Country Status (5)

Country Link
US (1) US20160207702A1 (en)
EP (1) EP3044525B1 (en)
CN (1) CN105593620B (en)
SG (1) SG11201601560WA (en)
WO (1) WO2015038222A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018071647A1 (en) * 2016-10-12 2018-04-19 Carrier Corporation Energy efficient refrigerated container operation
CN107364660B (en) * 2017-09-06 2023-08-22 珠海格力电器股份有限公司 Container and method for regulating the internal temperature of a container

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3699870A (en) * 1971-06-23 1972-10-24 Sun Shipbuilding & Dry Dock Co Apparatus for transportation of commodities
JP2004003705A (en) * 2002-05-31 2004-01-08 Seirei Ind Co Ltd Refrigerating device for container
US7585208B2 (en) * 2007-02-13 2009-09-08 Dole Food Company, Inc. Baffle plate assembly for directing air flow in a cargo container
US20100242527A1 (en) * 2007-06-22 2010-09-30 Ole Thogersen Refrigerated container for ships
EP2225509B1 (en) * 2007-12-04 2011-04-27 Marsk Container Industri AS Container comprising a guide wall
CN102548872B (en) * 2009-06-19 2014-07-23 开利公司 Temperature-controlled cargo container with air distribution
CN202177273U (en) * 2011-07-29 2012-03-28 珠海格力电器股份有限公司 Container refrigeration unit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2015038222A1 *

Also Published As

Publication number Publication date
SG11201601560WA (en) 2016-03-30
CN105593620A (en) 2016-05-18
CN105593620B (en) 2019-05-03
WO2015038222A1 (en) 2015-03-19
US20160207702A1 (en) 2016-07-21
EP3044525B1 (en) 2019-08-28

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