| 摘要 |
PURPOSE:To hold air supply and exhaust balance without disordering a rising air current and to enhance a collecting rate by setting the angle of an air supply and exhaust port upward angle of a specific range with a horizon as a reference, setting an air supply rate to the exhaust amount of the rate of a specific range and setting a diffusing speed to a specific value or less. CONSTITUTION:Air supply passages 4, 5 are formed at front side A and both right and left sides B of inner and outer hoods 2, 3 of the hoods 2, 3 of a range hood body 1. A supply air diffuser 6 of the front side A is formed upward at the diffusing angle of a supply air diffuser 7 of the sides B in a range of 30-60 degrees, and the areas of the diffusers 6, 7 are so set as to become 2m/sec or less. Further, the suction capacity of an air supply fan 10 is so set as to fall within 20-50% of the exhaust amount of an exhaust fan 8. Thus, air supply and exhaust balance is maintained without disordering a rising air current, and a collecting rate can be enhanced. |
