| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem of occurrence of residue such as surface fastener sticking strongly to a metal part on a ventilator side when a filter of a thickness of about 1 cm drops because of performance degradation due to long term use.SOLUTION: In a space formed between magnets 1 and a surface 9B of a metal body (iron plate or the like) 9 of paramagnetic property on a front side of a ventilator case portion, a second filter 4B of a thickness of TB that is not larger than a thickness of TA of the first filter 4A is sandwiched by a magnetic force of a plurality of magnets 1, to be attracted onto the surface 9B. On an upper surface of each of the magnets 1, a surface fastener 3 is bonded through a synthetic rubber based adhesive or resin-based adhesive 2 capable of preventing infiltration of oil, and a first filter 4A is surface-bonded to an upper surface 3US of each surface fastener 3. With this configuration, vapor of the oil generated in an oil cooking place is efficiently absorbed in two stages. |
