| 摘要 |
<P>PROBLEM TO BE SOLVED: To make the relative humidity in a room not change as much as possible by performing an operation for switching to entire heat exchange ventilation without fail when the absolute humidity of outside air is not within a range of an arbitrary absolute humidity reference value. <P>SOLUTION: A heat exchange ventilator includes a body casing 1 having an air supply air duct 6 and an exhaust air duct 7, a heat exchanger 10 which exchanges heat between an air supply flow and an exhaust flow, a bypass passage 15 which bypasses the heat exchanger, a damper 16 capable of switching an air duct, an outdoor temperature/humidity sensor 17, and a controller 18 which alternates heat exchange ventilation and normal ventilation (bypass ventilation) bypassing the heat exchanger. The controller 18 compares outdoor absolute humidity computed based upon the output signal of the outdoor temperature/humidity sensor 17 with the predetermined absolute humidity reference value, and switches the damper to the normal ventilation (bypass ventilation) when the outdoor absolute humidity is within the range of the predetermined absolute humidity reference value or to the heat exchange ventilation when the outdoor absolute humidity is not within the range of the predetermined absolute humidity reference value. <P>COPYRIGHT: (C)2013,JPO&INPIT |
