US 11,882,849 B2
Thermodynamic system, machine comprising the thermodynamic system and thermal treatment method
Andrea Cocchi, Calderara di Reno (IT); and Roberto Lazzarini, Reggio Emilia (IT)
Assigned to ALI GROUUP S.R.L.—CARPIGIANI, Cernusco sul Naviglio (IT)
Filed by ALI GROUP S.r.l.—CARPIGIANI, Cernusco sul Naviglio (IT)
Filed on Sep. 24, 2018, as Appl. No. 16/139,879.
Claims priority of application No. 202017000117130 (IT), filed on Oct. 17, 2017.
Prior Publication US 2019/0110496 A1, Apr. 18, 2019
Int. Cl. A23G 3/02 (2006.01); A23G 9/12 (2006.01); A23G 9/16 (2006.01); F25B 13/00 (2006.01); F25B 31/00 (2006.01); F25B 41/22 (2021.01); F25B 49/02 (2006.01); F25B 41/37 (2021.01)
CPC A23G 3/0226 (2013.01) [A23G 9/12 (2013.01); A23G 9/16 (2013.01); F25B 13/00 (2013.01); F25B 31/008 (2013.01); F25B 41/22 (2021.01); F25B 41/37 (2021.01); F25B 49/02 (2013.01); F25B 2313/031 (2013.01); F25B 2500/08 (2013.01); F25B 2700/2101 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A thermodynamic system for cooling or heating a first container containing a liquid or semi-liquid food product, comprising a circuit employing a heat exchanger fluid, including:
a compressor including a compressor inlet for the heat exchanger fluid and a compressor outlet for the heat exchanger fluid;
a first heat exchanger, having an outlet and an inlet, the inlet connected to the compressor outlet;
a first expansion element connected to the outlet of the first heat exchanger;
a second heat exchanger thermally connectable with the first container and which has an outlet and an inlet connected to an outlet of the first expansion element;
a return duct including an inlet portion connected to the outlet of the second heat exchanger and an outlet portion connected to the compressor inlet;
a temperature reducing device configured for reducing a temperature of the heat exchanger fluid, connectable with the circuit for receiving at least a portion of the heat exchanger fluid, including a device inlet and a device outlet, and configured to reduce the temperature of the heat exchanger fluid flowing between the device inlet and the device outlet, the device outlet being flowingly connected to the compressor inlet or inside the compressor;
a regulating valve configured for regulating the flow of the heat exchanger fluid traversing the temperature reducing device between a minimum flow configuration and a maximum flow configuration;
a controller operating on the regulating valve to drive the regulating valve;
wherein the controller includes a measuring device adapted to detect a triggering parameter, the controller being configured to control the regulating valve for regulating the flow of heat exchanger fluid traversing the temperature reducing device as a function of a value of the triggering parameter.