Device for heating and cooling various products

Claim 2

Apparatus for heating and cooling various products comprising: a partially closed container inside of which are placed the products, said container being double-walled to delimit a closed area between said walls; inlet and outlet ducts communicating with said closed area; at least one tank having an inlet and an outlet, said tank being connected at the outlet thereof with said inlet duct; a first valve mounted on said inlet duct; a charge of pulverulent particles located in said tank; heat exchange means connected to said tank for varying the temperature of said charge of particles; disturbing means located inside said tank to put said pulverulent particles in a non-cohesive state whereby said particles maintained in a non-cohesive state and heated at a desired temperature constitute a reserve of particles when said first valve mounted on said inlet duct is closed; suction means connected to said outlet duct and to the inlet of said tank for moving the heated and in non-cohesive state particles from said tank when said first valve is opened through said closed area and from said closed area to said tank; and a second valve mounted on said outlet duct whereby said container can be removably mounted to said tank and said suction means.

Claim 3

Apparatus as set forth in claim 1 wherein said pulverulent particles are composed of fine-grained heat and cold conserving material having a diameter ranging from a few microns to 0.5 millimeter.

Claim 4

Apparatus as set forth in claim 1 wherein said disturbing means are stirrer appliances.

Claim 5

Apparatus as set forth in claim 1 wherein said disturbing means comprises a pneumatic gas diffuser placed on the bottom wall of at least one tank, said tank being then further provided with a separation appliance having a gas discharge outlet whereby separation of waste gas from said pulverulent material takes place and is eliminated from said tank.

Claim 6

Apparatus as set forth in claim 4 wherein said separation appliance is composed of a cyclone having a casing connected to the closed area through pipes in which are provided said suction means.

Claim 7

Apparatus as set forth in claim 4 wherein said suction means are composed of a gas injection nozzle placed in a venturi upstream from said separation appliance.

Claim 8

Apparatus for heating and cooling various products comprising: a partially closed container inside of which are placed the products, said container being double-walled to delimit a closed area between said walls, with at least one inlet aperture and one outlet aperture; a cover to close said container; a first tank having one input port and one output port and inside of which is provided a charge of pulverulent particles; a second tank having one input port and one output port and inside of which are provided together means to connect the output port of said first tank to the input port of said second tank, and to controllably permit part of said charge of pulverulent particles to pass into said second tank, heat exchange means for varying the temperature of the said particles in said second tank, and disturbing means for the part of said charge of pulverulent particles within said second tank, said disturbing means being designed to maintain the puLverulent particles therein in a non-cohesive state, whereby the pulverulent particles maintained in a non-cohesive state are heated at a desired temperature thus constituting a reserve of particles at a controlled temperature; and suction means for moving the heated pulverulent particles from the output port of said second tank towards the at least one inlet aperture of said closed area, then from said inlet to the at least one outlet aperture of said closed area and from this outlet to the input port of said first tank.

Claim 9

Apparatus for heating and cooling various products comprising: a partially closed container inside of which are placed the products, said container being double-walled to delimit a closed area between said walls, with at least one inlet aperture and one outlet aperture; a cover to close said container; a first tank having one input port and one output port and inside of which is provided a charge of pulverulent particles; a second tank having one input port and one output port and inside of which are provided together means to connect the output port of said first tank to the input port of said second tank, and to controllably permit part of said charge of pulverulent particles to pass into said second tank, heat exchange means for varying the temperature of the said particles in said second tank, and disturbing means for the part of said charge of pulverulent particles within said second tank, said disturbing means being designed to maintain the puLverulent particles therein in a non-cohesive state, whereby the pulverulent particles maintained in a non-cohesive state are heated at a desired temperature thus constituting a reserve of particles at a controlled temperature; and suction means for moving the heated pulverulent particles from the output port of said second tank towards the at least one inlet aperture of said closed area, then from said inlet to the at least one outlet aperture of said closed area and from this outlet to the input port of said first tank.

Claim 10

Apparatus as set forth in claim 7 wherein said pulverulent particles are composed of fine-grained heat and cold conserving material having a diameter ranging from a few microns to 0.5 millimeter.

Claim 11

Apparatus as set forth in claim 7 wherein said disturbing means are stirrer appliances.

Claim 12

Apparatus as set forth in claim 7 wherein said disturbing means comprises a pneumatic gas diffuser placed on the bottom wall of said second tank, said second tank being then further provided with a separation appliance having a gas discharge outlet whereby separation of waste gas from said pulverulent material takes place and is eliminated from said second tank.

Claim 13

Apparatus as set forth in claim 10 wherein said separation appliance is composed of a cyclone having a casing connected to the closed area through pipes in which are provided said suction means.

Claim 14

Apparatus as set forth in claim 10 wherein said suction means are composed of gas injection nozzle placed in a venturi upstream from said separation appliance.