| 摘要 |
PURPOSE:To easily attach and take out an ozone filter and to improve exchanging workability by constituting so that a part of the ozone filter may be projected to a downstream part in an air current direction from the downstream end of a duct even in the case of inserting the ozone filter to the maximum. CONSTITUTION:The ozone filter 3 is attachably/detachably inserted toward the upstream side from the downstream end of the duct 4 in the air current direction, and held elastically to the duct 4 by the elasticity of an air seal member. A projection 9 regulating a maximum amount (a) in the case of inserting the filter 3 is provided in the duct 4, and the filter 3 inserted in the duct 4 is butted against the projection 9 so as to regulate the maximum insertion amount (a). At such a time, a position where the projection 9 is provided is decided based on the thickness of the filter 3 on the downstream side in the air current direction of the filter 3 so that a projecting amount (b) in the case of projecting the filter to the outside from the end of the duct 4 may be obtained. By setting the projecting amount (b) to length which is long enough to pick up the filter 3 with fingers, the filter 3 is easily attached to/taken out of the duct 4. |
