JPS61203244U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1a is a sectional view showing an embodiment of this invention;
Fig. 1b is a view taken along the - line in Fig. 1a, Fig. 2 is a schematic diagram of the embodiment, Fig. 3 is a schematic diagram of the conventional example, and Fig. 4 is a schematic diagram of the conventional example.
The figure is a schematic diagram of another conventional example, Figure 5 is a layout diagram of the stopper for attaching the filter, and Figure 6 is the same as in Figure 5.
It is a line arrow view. 20...Clean area, 21...Operation rod, 22...
... Worm gear device, 24 ... Feed rod, 25
...Slide damper, 26...Filter, 27...
...Contaminated area, 28... Juan.

Claims (1)

[Scope of utility model registration request] A fan and a slide damper are provided in the contaminated area upstream of a filter that is provided on one surface of the casing to partition a clean area and a contaminated area, and a feed rod that is threadedly engaged with the slide damper to feed the slide damper; An air volume adjustment mechanism for a fan filter unit, comprising: an operating rod rotatable from the clean area side in an orthogonal direction; and further, the feeding rod and the operating rod are connected by a worm gear device.