| 摘要 |
<p>PURPOSE: An air inflow measuring device and an air inflow controlling device with the same are provided to maintain the quality of indoor air and save energy by receiving proper minimum air regardless of variable air supply flow rate according to cooling-heating load. CONSTITUTION: An air inflow measuring device comprises a case, an outside pressure gauge, an inside pressure gauge, a connector, and a temperature sensor. The case(10) is installed at an air side duct. In the case, a net-shaped metal plate body(11) is formed at the inlet to which air flows and the flowing air passes through a metal plate body and pressure drop is made. The outside pressure gauge(12) is mounted on one side of the inlet of the case and measures the pressure of the air flowing inside the case. The inside pressure gauge is mounted inside the case and measures the pressure of the air passing through the net-shaped metal plate body. The connectors(14,15) are connected to the ends of the outside pressure gauge and the inside pressure gauge respectively and transmits measured pressure signals to a controller(30). The temperature sensor(16) measures the temperature of the air.</p> |
