| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a filter frame of a unit type filter that allows work in a lightweight state during the exchange work of a filter material, does not require a time and effort for the filter material exchange, is eco-friendly, and reduces the manufacturing cost of a filter. <P>SOLUTION: The filter frame 10 is of the unit type and exchangeable in filter material. The filter frame includes an inner frame 30 having a storage space of the filter material and an outer frame 40 arranged outside the inner frame. The outer frame is separated from the inner frame in the outer peripheral direction of the inner frame, but connected to it in the depth direction. The outer periphery of the outer frame has a rectangular shape, and the wall surface of the outer frame has an attaching hole 42 attached to the other filter frame and/or an external structure. <P>COPYRIGHT: (C)2012,JPO&INPIT |
