FR2543667A1 - REFRIGERATION EQUIPMENT FOR ISOTHERMIC VEHICLES - Google Patents

Abstract

REFRIGERATING EQUIPMENT FOR ISOTHERMAL VEHICLES, CHARACTERIZED IN THAT IT INCLUDES A STORAGE CABINET 12, EQUIPPED WITH A BREWING TURBINE 14 PLACED INSIDE THE VEHICLE AND WHICH IS FILLED WITH NODULES OF SPHERICAL SHAPE 16, FILLED WITH A EUTECTIC DETERMINED.

Description

254366?

  The present invention relates to refrigeration equipment for isothermal vehicles, such as, in particular, trucks or wagons

  ensuring the transport of perishable goods.

  It is known that such vehicles, and more particularly isothermal trucks, are used on a large scale to transport goods, in particular frozen or fresh food products. These vehicles generally include eutectic plates, i.e.

  metal plates filled with a eutectic whose melting temperature-

  crystallization is adapted to the type of transport desiredê We know, in fact, that

  there are three classes of transport, depending on the temperature at

  what must be maintained the goods transported: class A, for frozen products (temperature of around 20 'C) class B, for fresh products (temperature from O to + 7 VC); and, class C, for fresh produce (the temperature of which may be close to

and higher than + 7 C).

  These vehicles generally have a refrigeration compressor

  operating on the sector, and a tube placed inside the eutectic plate

  tick, in which freon relaxes from the compressor Thanks to this arrangement, the compressor makes it possible to store at night the refrigerating energy necessary for the transportation of the next day, by charging the eutectic plates by using the latent heat of the eutectic considered.

  This invention proposes to improve these refrigeration equipment.

  traditional fiques by simplifying them.

  To this end, the invention provides refrigeration equipment for vehicles.

  isothermal cells characterized in that it comprises a storage cabinet, provided with a stirring turbine, placed inside the vehicle and which is furnished with spherical nodules, filled with a specific eutectic, according to the invention , the cabinet of the isothermal vehicle is filled with nodules adapted to the expected service, that is to say making it possible to carry out a transport of one of the classes A, B, or C. According to a characteristic of this invention, said cabinet comprises an orifice upper loading opening onto a chute which supplies nodules to this cabinet, via a filling hatch, formed in a wall of the vehicle, an evacuation hatch

  being provided at the bottom of the cabinet to ensure discharge-

nodules.

  According to the invention, the nodules are prepared in refrigeration installations located at the places of loading of the goods, and the loading in nodules is carried out in airlocks or tunnels communicating

  with enclosures for storage and loading of goods to be trans-

carry.

  Other features and advantages of the present invention are-

  will emerge from the description given below with reference to the attached drawing, which

  illustrates an embodiment thereof devoid of any limiting character. In the drawing: FIG. 1 is a schematic view, in perspective, representing an isothermal truck according to the invention, X FIG. 2 is a schematic vertical section view of the truck according to the Figure 1; and,

  Figure 3 is a diagram illustrating the various charging modes-

  ment and unloading into nodules of the isothermal truck according to this in-

vention.

  Referring to the drawing, there is shown an example of realization

  0 tion of an isothermal vehicle according to the invention and consisting of a truck

  carrying an isothermal box 10, in which a cabinet 12 is arranged,

  provided with a fan 14, powered by the vehicle battery.

  According to the invention, the cabinet 12 is furnished with spherical nodules 16, filled with an appropriate eutectic, which are introduced into this cabinet by means of a chute 18, placed under a filling hatch 20,

  formed in the upper wall of the box 10.

  According to this invention, the nodules are not loaded using a

  refrigeration compressor mounted on the truck, but in a pre-

  trim, preferably part of the fixed storage and deposition facilities for the goods to be transported Loading in nodules can be carried out using airlocks or tunnels which open onto the

  storage and loading of goods to be transported.

  In the nodule preparation centers, these are loaded with frigories during the most suitable tariff periods, then they are

  introduced into the truck cabinet to be used.

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  The diagram of loading and unloading in nodules illustrated in Figure 3 shows that each refrigerated vehicle can be fitted with the type of nodules suitable for the expected service, by loading it with class nodules

  A, B or C A single vehicle can therefore assume any type of trans-

  port In addition, the capacity of the vehicle can be adapted to the duration of the planned race, depending on the quantity of nodules introduced into its

cabinet 12.

  When the truck returns, the nodules are unloaded by the evacuation hatch 22, and they are evacuated by any suitable means of transport, for example by a trolley 24 or using a conveyor belt. They can then be washed, then sterilized before being introduced into power plants

  of preparation, to be recharged in frigories.

  In addition to the advantages mentioned above, we can also cite the possibility of restarting the same vehicle, immediately after having made a first journey, since it is sufficient to return the vehicle to the depot, to evacuate the "discharged" nodules ", and

  to refill the cabinet of this vehicle using "charged" nodules.

  depending on the class of transport to be carried out

  derailment of the immobilization time of vehicles compared to previous refrigeration equipment, in which the compressors had to recharge the eutectic plates for about eight hours

  weight saving on vehicles, given that the refrigeration compressor

fique is deleted; and,

great flexibility of use.

  It remains to be understood that this invention is not limited to the various embodiments described and / or represented here, but that it

includes all variants.

4; l 2543667 s

Claims (4)

  1 refrigeration equipment for isothermal vehicle, characterized in that it comprises a storage cabinet (12), provided with a stirring turbine (14), placed inside the vehicle and which is furnished with spherical nodules ( 16), filled with a specific eutectic. 2 refrigeration equipment according to claim 1, characterized in   that said cabinet (12) is filled with nodules adapted to the class of trans- port envisaged.   3 refrigeration equipment according to one of claims 1 or 2,   characterized in that said cabinet comprises an upper loading orifice   ment leading to a chute (18) ensuring the supply of nodules to the cabinet, by means of a filling hatch (20), formed in a wall of the vehicle, an evacuation hatch (22) being formed to the party   bottom of the cabinet to ensure unloading of the nodules.   4 Refrigeration equipment according to any one of claims   previous, characterized in that the nodules are prepared in instal-   refrigeration lations located at the places of storage and loading of the goods to be transported, and in that the loading in nodules is carried out in airlocks or tunnels which communicate with the storage enclosures and loading of goods.