Control device for medium flows for regenerative heat exchanger

Control device for medium flows for a regenerative heat exchanger, which is located between ductings (101, 104) divided into medium flow ducts (102, 103, 105, 106) by means of at least one partition wall and which is, in the way of the ductings (101), divided into medium flow ducts (105, 106) by means of at least one partition wall, whereby the medium-flow control device consists of a cell (107) that is divided into compartments (109) by means of partition walls (110) parallel to the medium flows and substantially transverse to the partition wall between the ducts and whose ends are provided with plate elements (108) substantially transverse to the medium flows, at least one of the said plate elements being displaceable substantially in the transverse direction of the partition walls (110) of the cell and the said plate elements being provided with alternatingly located through openings (111, 114) and blocking members, whose area corresponds to the area of the opening between one medium-flow duct (102, 103, 105, 106) and at least one compartment (109) in the cell, characterized in that the control device is located between the ducting (101) and the heat exchanger (104) and that one of the plate elements of the control device is stationary and the other one (108) displaceable.