| 摘要 |
PROBLEM TO BE SOLVED: To cause a rotation change-over valve in a heat storage type gas treatment device to be stopped in rotation at a desired stop position in a well precise manner and stably held at a rotation stopped state.SOLUTION: As motor control means for controlling a drive motor 19 for rotating a rotation change-over valve 18, there are provided position instruction means 31 for instructing a rotation position (rs) of the drive motor 19 at each time point in accordance with a set drive pattern for performing a changing-over operation of the rotation change-over valve 18 under a prescribed rotating operation pattern, position detecting means 32 for detecting an actual rotating position (r) of the drive motor 19 at the present time, and motor drive means 33 for driving the drive motor 19 in response to a difference between an instruction rotational position (rs) by the position instruction means 31 at the present time and a detected rotation position (r) by the position detecting means at the present time. |
