| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a desiccant ventilation fan that prevents deposition of frost to surfaces of heat exchangers in an exhaust passage. <P>SOLUTION: In a desiccant ventilation fan 10 comprising a sensible heat exchange rotor 13 for moving heat from a high-temperature side to a low-temperature side between an air feed passage 11 for taking air into a room and the exhaust passage 12 for discharging the air in the room, and second heat exchangers 16, 16a connected to first heat exchangers 14, 14a arranged at the downstream side of the sensible heat exchange rotor 13 along a flow of the air in the room in the exhaust passage 12 and existing in the air feed passage 11 via a refrigerant circuit 15, a temperature sensor 30 for measuring refrigerants sent to the second heat exchangers 16, 16a acting as evaporators is arranged in a refrigerant circuit 15, the sensible heat exchange rotor 13 moves the heat to the air feed passage 11 from the exhaust passage 12, and while the second heat exchangers 16, 16a act as the evaporators and when a measurement temperature of the temperature sensor 30 is not higher than a preset frosting prevention temperature, the sensible heat exchange rotor 13 is stopped and a temperature in the exhaust passage 12 is raised. <P>COPYRIGHT: (C)2013,JPO&INPIT |
