COILED HEAT EXCHANGER WITH SET OF INLETS AND METHOD OF ADJUSTMENT OF HEAT EXCHANGER'S HEATING SURFACES Russian patent published in 2017 - IPC F28D7/02 F28F27/02 

FIELD: machine engineering.

SUBSTANCE: invention relates to the heat exchanger (1), containing a set of inlets (30-36), each one of which is connected to at least one coherent pipe (20) of the heat exchanger (1), so that at least one flow (S) of the first medium, as well as one flow (S') of the second medium can be guided through at least one coherent inlet (30, 32, 33, 35, 36) to a respective coherent at least one pipe (20), while the heat exchanger (1) has a case (10), which surrounds the space (11) of the case in which the specified pipes (20) are located, so that, in particular, the flow (S'") of the medium passing through the space (11) of the case enters into indirect heat exchange with the medium flow (S, S') passing in the corresponding pipe (20), and the specified pipes (20) are wound around the central pipe (12) of the heat exchanger (1). According to the invention it is provided that each of the pipes (20) agreed with the appropriate inlet (30-36) sets the heating surface and the heat exchanger (1) has at least one switching means (100), which is intended to switch back and forth at least one of the inlets (30) between at least one first operating condition and one second operating condition, so that the flow (S) of the first medium can be directed in the first operating condition and the flow (S') of the second medium -in the second operating condition through at least one inlet (30) to at least one agreed pipe (20), with providing the large heating surface for the flow (S) of the first medium in the first operating condition and respectively, the smaller heating surface for the flow of the second medium and with providing the large heating surface for the flow (S') of the second medium in the second operating condition, and respectively, the smaller heating surface for the flow (S) of the first medium.

EFFECT: increase the efficiency.

11 cl, 2 dwg