Freight container comprising a climate arrangement and method for controlling the climate arrangement

Abstract

A freight container (10), comprising: a cargo compartment being defined by a floor (16), a ceiling (14) and walls (18a-d) wherein the ceiling comprises an inner portion (40) and an outer portion (24) defining a first space (26). The freight container further comprises a climate arrangement (50), configured for providing a climate-conditioned air-flow into said cargo compartment of said freight container. At least one of said walls comprises an inner wall portion (17a, 42) and an outer wall portion (17b, 32) defining a second space (19a, 19b), wherein said first space is fluidically connected to said second space, and said inner wall portion comprises at least one aperture (110) between said second space and said cargo compartment. The climate arrangement is configured to provide said climate-conditioned air-flow into said cargo compartment of said freight container via said first space, said second space and said at least one aperture.

1 . A freight container, comprising:
 a cargo compartment being defined by a floor, a ceiling and walls wherein the ceiling comprises an inner portion and an outer portion defining a first space;   a climate arrangement, configured for providing a climate-conditioned air-flow into said cargo compartment of said freight container;   wherein said climate-conditioned air-flow is provided in vicinity of said ceiling of said cargo compartment;   at least one of said walls comprises an inner wall portion and an outer wall portion defining a second space;   said first space is fluidically connected to said second space, and said inner wall portion comprises at least one aperture between said second space and said cargo compartment;   wherein said climate arrangement is configured to provide said climate-conditioned air-flow into said cargo compartment of said freight container via said first space, said second space and said at least one aperture.   
     
     
         2 . The freight container according to  claim 1 , wherein said at least one aperture is provided in vicinity of said floor. 
     
     
         3 . The freight container according to  claim 1 , wherein at least one of said walls comprises an inner wall portion and an outer wall portion defining a third space, wherein said cargo compartment of said freight container is fluidically connected to said third space and wherein said climate arrangement is configured to return a residual air-flow of said climate-conditioned air-flow from said cargo compartment of said freight container via said third space. 
     
     
         4 . The freight container according to  claim 3 , wherein said third space comprises an auxiliary passage arranged in vicinity of said inner portion of said ceiling, wherein an inlet of said auxiliary passage is arranged between a top part of said inner wall portion and said inner portion of said ceiling. 
     
     
         5 . The freight container according to  claim 3 , wherein said walls comprise two oppositely arranged side walls, a door and a back wall arranged oppositely said door, wherein said side walls define said second space, and said back wall defines said third space. 
     
     
         6 . The freight container according to  claim 5 , wherein said inner portion comprises an opening between said first space and said cargo compartment in vicinity of said door, wherein said climate arrangement is configured to provide a portion of said climate-conditioned air-flow into said cargo compartment of said freight container via said opening. 
     
     
         7 . The freight container according to  claim 6 , wherein said climate arrangement is configured to control a ratio between said climate-controlled air-flow to be provided into said cargo compartment via said at least one aperture and said portion of the climate-controlled air-flow to be provided into said cargo compartment via said at least one opening. 
     
     
         8 . The freight container according to  claim 1 , wherein said climate arrangement is configured to provide the climate-conditioned air-flow into said cargo compartment via said at least one aperture as a function of the position of said at least one aperture in said inner wall portion. 
     
     
         9 . The freight container according to  claim 5 , wherein said climate arrangement is configured to provide the climate-conditioned air-flow into said cargo compartment via said at least one aperture as a function of the position of said at least one aperture in said inner wall portion, and wherein a concentration of said at least one aperture, by the number of said at least one aperture, increases in a direction of the cargo compartment from said back wall towards said door. 
     
     
         10 . The freight container according to  claim 5 , wherein said freight container further comprises at least one spacer arranged on at least one of said door and said back wall. 
     
     
         11 . A method for controlling a climate-conditioned air-flow in a freight container, comprising the steps of:
 providing, by a climate arrangement, a climate-conditioned air-flow into a cargo compartment of said freight container;   said cargo compartment being defined by a floor, a ceiling and walls, wherein the ceiling comprises an inner portion and an outer portion defining a first space;   wherein said climate-conditioned air-flow is provided in vicinity of said ceiling of said cargo compartment; and   providing said climate-conditioned air-flow into said cargo compartment of said freight container via said first space and a second space defined by an inner wall portion and an outer wall portion of at least one of said walls, wherein said first space is fluidically connected to said second space and wherein said inner wall portion comprises at least one aperture between said second space and said cargo compartment.   
     
     
         12 . The method according to  claim 11 , wherein said step of providing said climate-conditioned air-flow into said cargo compartment via said at least one aperture is performed as a function of the position of said at least one aperture in said inner wall portion. 
     
     
         13 . The method according to  claim 11 , wherein said walls comprise two oppositely arranged side walls, a door and a back wall arranged oppositely said door, wherein said inner portion comprises an opening between said first space and said cargo compartment in vicinity of said door, wherein said step of providing said climate-conditioned air-flow into said cargo compartment comprises controlling a ratio between the climate-controlled air-flow to be provided into said cargo compartment via said at least one aperture and the climate-controlled air-flow to be provided into said cargo compartment via said at least one opening.