GAS EXHAUSTING APPARATUS OF KITCHEN'S RANGE HOOD

摘要

A gas exhaust apparatus of a kitchen range hood is provided to automatically vary the air volume depending on an exhaust load to accomplish an optimal exhaust performance, thereby improving power save and reducing noise. A gas exhaust apparatus of a kitchen range hood includes a hood, an air duct(20), an exhaust fan(22), an indoor air pressure sensor(41), an outdoor air pressure sensor(42), and a controller. The hood is installed over the gas range. The air duct discharges an exhaust gas to the exterior. The exhaust fan discharges the exhaust gas into the air duct. The indoor air pressure sensor is installed in the front of the exhaust fan of the air duct. The outdoor air pressure sensor is installed in the rear of the exhaust fan of the air duct. The controller calculates a pressure difference between the front and rear parts of the exhaust fan depending on a pressure signal input from the indoor air pressure sensor and the outdoor air pressure sensor, and adjusts the air flow of the exhaust fan according to the pressure difference.