(57) Cooling unit (1) with reversible cycle comprising of a first heat exchanger (2),
with which a refrigerant exchanges heat with the outside environment; a second heat
exchanger (3), with which the refrigerant exchanges heat with a generic liquid; a
compression device (4) for compressing said refrigerant; and a group of distribution
(5) for distributing said refrigerant, and which selectively connects said compression
device (4) to said first (2) and said second heat exchangers (3); said first heat
exchanger (2) is connected to said second heat exchanger (3) by at least a first joint
pipeline (7) along which are positioned, in series, a first check valve (8), an intercepting
valve (10) and a first expansion valve (20) at which the refrigerant quickly expands;
said cooling unit (1) also comprises of a by-pass circuit (21), that comprises a second
pipeline (22). Said pipeline (22) has the first extremity connected to said first
joint pipeline (7), between said second heat exchanger (3) and said first expansion
valve (20), and the second extremity connected to said first joint pipeline (7) between
said first check valve (8) and said intercepting valve (10). Said by-pass circuit
(21) comprises also a refrigerant storage tank (23) and a second check valve (24)
positioned on said second joint pipeline (22), between said refrigerant storage tank
(23) and said first joint pipeline (7).
|
|
