| 摘要 |
PROBLEM TO BE SOLVED: To prevent deterioration in dust collecting and deodorizing performance by integrating a dust collecting filter and a deodorizing filter, each of which is folded into a bellows shape with a different folding height, by laying the folded parts of one side over each other and supporting the periphery with a frame body. SOLUTION: The surface area of the deodorizing filter 21a is made smaller than that of the dust collecting filter 21b by making the folding height of the deodorizing filter 21a smaller than that of the dust collecting filter 21b, which are folded into bellows shape. And the dust collecting filter 21a and the deodorizing filter 21b are integrated by laying the folded parts of one side of the dust collecting filter 21a and the deodorizing filter 21b over each other and the periphery is supported with the filter frame 11c. As a result, it is prevented that the folded parts of both sides of the filter 21a and 21b is laid over each other and the deterioration of dust collecting and deodorizing performance caused by plugging at the top of both folded parts is prevented. |
