Refrigerating unit of a dispenser of refrigerated products

Abstract

A refrigerating unit ( 3 ) of a dispenser of refrigerated products ( 1 ) in a room ( 2 ) is described, comprising a primary circuit for recovering and regenerating at least one refrigerating fluid and a secondary circuit for recovering and regenerating a heat-transfer fluid, to allow the thermal exchange between refrigerating fluid, heat-transfer fluid and refrigerated products in the room ( 2 ), such refrigerating unit ( 3 ) comprising at least one primary evaporator ( 9 ) in common with respect to the refrigerating fluid and the heat-transfer fluid and at least one secondary heat exchanger ( 10 ) with respect to the heat-transfer fluid and to the refrigerated products in the room ( 2 ).

1 . A refrigerating unit of a dispenser of refrigerated products in a room, comprising a primary circuit for recovering and regenerating at least one refrigerating fluid and a secondary circuit for recovering and regenerating a heat-transfer fluid, to allow a thermal exchange between refrigerating fluid, heat-transfer fluid and refrigerated products in the room, the refrigerating unit further comprising at least one primary evaporator in common with respect to the refrigerating fluid and to the heat-transfer fluid and comprising at least one secondary heat exchanger with respect to the heat-transfer fluid and to the refrigerated products in the room, the primary circuit for recovering and regenerating the refrigerating fluid being hermetically sealed and at least the primary evaporator being placed in a suitable room open towards an outside environment to allow a suitable air circulation, natural or forced through a fan, wherein the primary circuit for recovering and regenerating the refrigerating fluid is composed of a compressor, a condenser, at least one fan of the condenser, a dehydrating filter, a lamination member and the primary evaporator, while the secondary circuit for recovering and regenerating the heat-transfer fluid is composed of the primary evaporator, the secondary heat exchanger, at least one fan of the secondary heat exchanger and a pump for circulating the heat-transfer fluid, the pump for circulating the heat-transfer fluid being placed in the room of the primary circuit, while the secondary heat exchanger is placed inside the room for cooling and keeping the products at a controlled temperature, wherein the refrigerating fluid is composed of totally natural gases, HC, namely gas produced by the anaerobic decomposition of organic material, Hydro-Fluoro-Carbide, HFC-based fluorinated gases, Hydro-Fluorine-Olefin, HFO-based gases, carbon dioxide, CO2, and the heat-transfer fluid is composed of water or of an antifreeze solution. 
     
     
         2 .- 3 . (canceled)