Anordning vid och förfarande för styrning av ventilationssystem,申请号SE20000000914-传众专利搜索

Anordning vid och förfarande för styrning av ventilationssystem

申请公布号：SE517000(C2)

申请号：SE20000000914

申请日期：2000.03.17

申请公布日期：2002.04.02

申请人：

STIFAB FAREX AB

发明人：ANDERS *SVENSSON;FREDRIK *ENGDAHL

分类号：F24F11/00;(IPC1-7):F24F11/00;F24F11/04

主分类号：F24F11/00

摘要：The invention relates to an arrangement and a method for controlling a ventilation system (1). An air treatment unit (2) has a supply air blower (4) which is connected to a supply air duct (8) with a number of branch ducts and a first pressure sensor (16), arranged before the first branch duct, for controlling the speed of the blower according to a predetermined dimensioning parameter (Ptot), which branch ducts are each provided with their own additional pressure sensor connected to a regulator (20) for keeping the pressure constant in the respective branch duct between upper (Pmax) and lower (Pmin) limit values depending on the speed of the blower. The regulator (20) comprises a register (22) with an actuating device, and the method is characterized by the following steps: a) the actuating device of each branch duct register (S1, S2, Sn) indicates the degree of opening ( alpha 1, alpha 2, alpha n) of the register and supplies the value of the same to a system manager (M) (24) which is arranged in the system and by means of b) an evaluation circuit (U) compares the current degrees of opening of the registers with one another in order to establish which of the registers (S1, S2, Sn) has the greatest current degree of opening ( alpha dim), c) which evaluation circuit (U), when all the registers are to some extent closed and the greatest current degree of opening ( alpha dim) is greater than a predetermined degree of opening ( alpha pred), generates signals to the blower to reduce the speed until the register assumes its maximum degree of opening ( alpha max). <IMAGE>