METHOD FOR COOLING OF FRAME OF ROTARY PLATE HEAT EXCHANGER AND DEVICE FOR ITS REALIZATION Russian patent published in 2007 - IPC F28D19/04 

FIELD: heat power engineering, mainly for gas-turbine engines, for example, automobile engines.

SUBSTANCE: the offered method consists in extraction of part of the flow of heat exchange medium and direction of it along the frame wall, in this case the extracted part of the flow of hot medium is directed along the frame wall after a preliminary cooling which prevents flow about of the frame wall by hot medium and, consequently, provides for reduction of thermal deformations of the flame. The cooling system realizing this method represents cooling ducts located along the frame wall: the main and the additional duct with a guide case. The main duct is formed by two shells enveloping the heat exchange matrix, it is U-shaped and has a bottom positioned on the heat check. The inner shell is installed in cantilever on the hot cheek and may be made in the form of a heat-insulating wall separating the additional cooling duct from the main one. The outer shell divides the main duct into two bends, one of which communicates with the additional duct, and together with the cover serving at the same time as the bottom of the additional duct, this shell makes up the system guide case. The additional cooling duct, depending on the structural features of the heat exchange matrix and operating parameters of the heat exchanger, is formed by the inner shell and either by slotted ducts of the matrix, at least by one, or by a special duct (slotted or some other) newly introduced in the device, at least by one, or by a part of the porous packing of the matrix, insulated or non-insulated from the main space of the packing.

EFFECT: enhanced efficiency of cooling of the heat exchanger frame and, respectively, reduced its thermal deformations and stresses in it at a structural simplification of the cooling system.

6 cl, 6 dwg