| abstract |
. Thermal management device of at least one first heat exchanger (20), particularly for a motor vehicle, which comprises a primary refrigerant circuit (1) in which a refrigerant fluid is circulated and in which at least one compressor (3), a condenser (5), a pressure reducer (7) and an evaporator (9), a secondary circuit (10) in which a heat carrier fluid is circulated and into which at least they are inserted said first heat exchanger (20), and said condenser (5) or said evaporator (9), said secondary circuit (10) comprising means for circulating said heat carrier fluid (45), first (35) , second (51) and third (60) parallel branches in which said first exchanger (20), said condenser (5) and said evaporator (9) are inserted, respectively, further comprising said secondary circuit (10) means selective connection (55 , 57) of said first branch (35) with said second branch (51) or said third branch (60), so that it can be selectively heated in said condenser (5) or cooled in said evaporator (9) the heat carrier fluid intended to pass through said first exchanger (20), said secondary circuit (10) comprising at least a fourth branch (31) in which at least a second exchanger (12) is inserted, and selective connection means ( 40, 41, 55, 57) of said fourth branch (31) with said second branch (51) or said third branch (60) when said first branch (35) is selectively connected with said third branch (60) or said second branch (51), respectively, so that two independent sub-circuits are constituted, and means of putting into circulation (38, 45) of said heat-carrying fluid in said sub-circuits, characterized by the fact of that said secondary circuit (10) comprises at least one fifth branch (63) in which is inserted a third exchanger (16), selective connection means (55, 57) of said fifth branch (63) with one of said second (51) and third (60) branches so that a first sub-circuit, selective connection means (40, 41, 43, 47) of said first branch (35) with said fourth branch (31) and / or with the other of said second (51) and third (60) branches so that a second independent sub-circuit of said first sub-circuit is constituted, and means for putting into circulation (45, 67) of said heat-carrying fluid in said first and second sub-circuits. |