COOLING CIRCUIT OF HEAT EXCHANGE UNIT Russian patent published in 2014 - IPC F17C9/02 

FIELD: heating.

SUBSTANCE: invention relates to heat power engineering and can be used in cryogenic equipment for evaporation of gaseous media contained in liquid state in rocket-and-space equipment and in national economy, for example for gasification of liquefied gases and their mixtures. The cooling circuit of a heat exchange unit, preferably of a cryogenic liquid evaporator, which contains a housing, in which heat exchange element and a heater is located. The housing is made in the form of at least two double-layer covers forming an annular cavity for passage of heating heat carrier; with that, each of the covers consists of two shells rigidly attached to each other, between which channels combined into cryogenic product supply and discharge manifolds are formed. A cover plate in which mixing elements and an ignition device is fixed at the annular cavity inlet, and a gas line is installed at its outlet. The circuit is shaped and includes at least a cylindrical part and a convergent part in the form of a confuser, preferably a conical one, so that an annular cavity with channels for passage of cryogenic component between the above parts is formed. Ribs forming channels for passage of cryogenic component in the internal cover are made on inner surface of cylindrical part of the external shell; with that, the above ribs of the convergent part of the shell are made on outer surface of the internal convergent part of the shell. Inside the conical part, preferably in its central zone, there installed is a connection pipe connected to the cavity of the internal cover, and manifolds for supply and discharge of cryogenic component to the inner cavity of the external cover are located on the above convergent part of the external cover.

EFFECT: improving cooling efficiency.

3 dwg