| 摘要 |
PURPOSE:To control temperature in a chamber to a target temperature and maintain it in a simple manner at low cost by connecting an exhaust passage and an outside air passage to a circulation air duct provided between a drying chamber and an air conditioning unit and controlling air exhaust quantity in proportion to outside air introducing quantity. CONSTITUTION:In an air conditioning device, a large number of ciculation air ducts S, 5-9 through which air is circulated by a fan 10 are disposed between a drying chamber land an air conditioning unit 4. In this case, an exhaust passage (b) for exhausting part of circulation air to the outside and an outside air passage (a) for introducing the outside air are connected to each of the circulation ducts S, 5-9. On the other hand, air exhaust quantity of the passage (b) and outside air introducing quantity of the passage (a) are controlled by damper devices 11, 12 respectively. And based on the temperature in the chamber 1 detected in the operating condition of the unit 4, opening and closing of the damper devices 11, 12 are controlled by a control means 14. As a result, air exhaust quantity is controlled in proportion to air introducing quantity to control the temperature in the chamber to a target temperature. |
