| 摘要 |
A circuit arrangement for the control of combustible product pressure in at least one furnace (1), which is equipped with at least one pressure sensor (13), whose output is connected to the input of the first regulator (14), whose output is connected with a regulating device (3), located in a connecting channel (2), through which the furnace (1) is connected with a combustion ventilator (10), which is connected through the regulating device (11) to the output of the second regulator (17). The output of at least one pressure sensor (13) is additionally connected in parallel to the output of the second combustion ventilator (10) regulator (17). Alternatively the output of at least one pressure sensor (13) is connected in parallel to the separate input of a unit (16) connected in front of the input to the second regulator (17). Or according to another alternative between the pressure sensor (13) output and input to the unit (16) there is a block (19), switch (20) or block (19) and switch (20) together.<IMAGE>
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