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

Definitions

• This invention relates to a transport container especially but not exclusively intended for air freight and comprising a closed unit provided with one or more doors or the like and an internal cooling space.
• a transport container especially but not exclusively intended for air freight and comprising a closed unit provided with one or more doors or the like and an internal cooling space.
• closed units provided with an outer casing of preferably glassfibre with so-called self- -circulation, cooling of the intended goods being obtained by using dry ice developing gases which are passed through the very container.
• the gases preferably carbonic acid
• the gases are a security risk both for the very goods in the containers and for the passengers in the aircraft. For this reason it is normally not permitted to transport more than two containers per aircraft.
• the carbonic acid gas has always a certain tendency to influence living products, e.g.
• Cooling containers based on cooling by the aid of dry ice which, in addition, requires much space, have also always a limited cooling ability which is an essential disadvantage and may per se also involve great operational problems.
• only a limited amount of dry ice can of course be brought alon and obviously unintentinal transport pauses in the form of stops on airports or the like may considerably prolong the transport time calculated from the beginning, so that the whole store of dry ice is consumed and the contents of the container run the risk of being destroyed.
• the transport container defined in the introductory section consists of a unit built of a insulating sandwich construction with a cooler unit mounted therein, which is arranged with current supply by one or more associated rechargeable batteries. It must be possible to supply current not only from said batteries but also directly from an arbitrary outer current source.
• the goods to be transported can e.g. be loaded into the container when this is accomodated in some form of cooling space, after which the container is closed and stowed onto a truck.
• the cooler unit of the transport container is fed with current from the separate current supply source of the car or, as an alternative from the built-in batteries.
• On the air terminal current is supplied by the electric mains there, e.g. a conventional one of 220 or 100 V.
• Fig. 1 is a top plan view from one short side of a trans- port container embodied according to the principles of the invention.
• Fig. 2 is a front plan view of the transport container illustrated in Fig. 1.
• Fig. 5 is a top plan view of the new transport container, the roof portion of the container being removed to illustrate
• Fig. 4 schematically shows the main portions included in the cooler unit of the new transport container.
• the transport container illustrated in Figs. 1-3 consists of a closed unit 12 provided with an internal cooling space 10, said unit being built for an insulating sandwich construction in the form of a core 14 consisting of a DIVINYCELL material, which is surrounded on both sides by a protective covering layer 16 and 18, respectively.
• the DIVINYCELL material consists of light cellular plastic i.e. expanded plastic with closed cells, and has a very low density.
• the expanded plastic material is based on polyvinyl having properties which are especially suited for use for the intended purpose such as load-carrying core material in a sandwich construction. The material has a low water absorption ability and a good ability of standing heavy loads.
• the protective covering layers 16, 18 applied upon the core material 14 are bonded to the core material by means of an adhesive especially intended for the purpose.
• the covering layers 16, 18 advantageously consists of light aluminum plates. This gives a transport container of a very low total weight .
• the walls 20, the roof 22, the bottom 24 and the door 26 of the cooling space are internally corrugated which contributes to increasing spreading of cooling air passing through the cooling space 10.
• the in- and outsides of the construction are smooth which makes it easy to clean the container, as already mentioned by way of introduction.
• One long side of the transport container on the whole consists of the light double door 26 adjustable in conventional manner by means of rail 28 and control handle 30 and resting on hinges 52 of a construction also known per se. Between the two halves of the door 52 as well as at its outer edges against the short sides of the container there are sealing jointings 34 ensuring a good insulation when the door is closed.
• the cooler unit 56 associated with the new transport container can be embodied and placed in many different ways.
• said unit 36 is arranged for current supply via one or more associated re ⁇ chargeable batteries 38.
• a battery charger as well as battery eliminator not shown on the drawing belong to the unit which can also be fed with current from an outer current soruce, e.g. the conventional mains at 220 or 110 V.
• cooler aggregate 56 projects into the transport container at one of its upper corners, the unit being accessible via a cover plate made as a door 10.
• Figs. 1-5 the transport container is shown in resting position on a pallet bottom 42.
• the cooler unit belonging to the transport container comprises an internal voltage source, preferably with the voltage 24 V, in the form of four battery units 38, which are connectible, as desired, in parallel or in series, to drive the electric devices of the cooler unit.
• the cooler unit is of compressor type and, thus, comprises a compressor 44 as well as a condenser 46 connected thereto.
• a first fan device 4S is associated with the condenser 46 and a second fan device 50 is associated with the evaporator 52 in the very cooling space 10.
• a throttle valve 54 and a filter 56 are arranged in the line 58 between the evaporator 52 and the condenser 46 in conventional manner.
• a thermostat 60 for control of the temperature within the desired temperature range.
• the transport container in particular, may vary within w-ide limits for adaption to the form of various storage spaces.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Physics & Mathematics (AREA)
• Mechanical Engineering (AREA)
• Thermal Sciences (AREA)
• General Engineering & Computer Science (AREA)
• Refrigerator Housings (AREA)
• Packages (AREA)
• Devices That Are Associated With Refrigeration Equipment (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20352433

Family Applications (1)

Country Status (4)

Families Citing this family (7)

Family Cites Families (3)

• 1983
  • 1983-09-09 SE SE8304848A patent/SE8304848L/ not_active Application Discontinuation
• 1984
  • 1984-09-07 AU AU33953/84A patent/AU3395384A/en not_active Abandoned
  • 1984-09-07 EP EP19840903301 patent/EP0155290A1/de not_active Withdrawn
  • 1984-09-07 WO PCT/SE1984/000291 patent/WO1985001274A1/en unknown

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events