| 摘要 |
PURPOSE:To compose an air suction grill of small number of common components and to improve a transportation efficiency and a stocking efficiency of the components by respectively coupling upper and lower coupling surfaces to upper and lower coupling surfaces of one or a plurality of grill frames through coupling recesses and protrusions. CONSTITUTION:Coupling surfaces 13c formed with coupling recesses 13a and protrusions 13b are respectively arranged in upper and lower mounting frames 13. Upper and lower coupling surfaces 14c, 14d formed with protrusions 14a and recesses 14b engaged with the recesses 13a and protrusions 13b of the upper and lower frames 13 are arranged in rectangular grill frames 14. Further, an air suction grill piece 14e is arranged between the surfaces 14c and 14d. The upper and lower frames 13 are coupled with the surfaces 14c and 14d of three grills 14 through the recesses 13a and protrusions 13b thereby to constitute an air suction grill 15. On the other hand, left and right mounting frames 14f, 14g protrude from rear parts of the frame 14, and a filter 11 is mounted therebetween. |
