JPH0342951U

JPH0342951U -

Info

Publication number: JPH0342951U
Application number: JP4547189U
Authority: JP
Priority date: 1989-04-17
Filing date: 1989-04-17
Publication date: 1991-04-23

Description

[Brief explanation of drawings]

第１図は本考案の防火機構付き差圧ダンパーの
一実施例の断面図、第２図は同防火機構付き差圧
ダンパー要部の側面図、第３図はロツクばねの全
体形状を示す平面図である。図中、２……仕切り壁、４……座板、５……ガ
イド軸、５ａ……ロツク部、６……支持部材、８
……差圧ダンパー羽根、９……軸受筒、１０……
ストツパー、１３……抵抗カバー、１４……防火
機構、２０……ロツクばね、２２……７２度温度
ヒユーズ、２３……ストツパー。 Fig. 1 is a sectional view of one embodiment of the differential pressure damper with a fire protection mechanism of the present invention, Fig. 2 is a side view of the main part of the differential pressure damper with a fire protection mechanism, and Fig. 3 is a plan view showing the overall shape of the lock spring. It is a diagram. In the figure, 2... Partition wall, 4... Seat plate, 5... Guide shaft, 5a... Lock part, 6... Support member, 8
... Differential pressure damper blade, 9 ... Bearing tube, 10 ...
Stopper, 13...Resistor cover, 14...Fire protection mechanism, 20...Lock spring, 22...72 degree temperature fuse, 23...Stopper.

Claims

[Scope of Claim for Utility Model Registration] 1. A differential pressure damper blade is installed in the opening provided in the partition wall between indoors and outdoors, which maintains the air pressure in the room at a constant pressure depending on the degree of opening in normal times, and which dampers the differential pressure in the event of a fire. A differential pressure damper with a fire prevention mechanism, characterized in that it is equipped with a fire prevention mechanism that completely closes a damper blade. 2. A seat plate provided on the edge of the mouth and a base end fixed to the support member fixed to the seat plate. a guide shaft, a dish-shaped differential pressure damper blade whose center is slidably engaged with the guide shaft and moves in the direction of the guide shaft, and whose concave portion faces toward the indoor side; and the differential pressure damper blade. a resistance cover for regulating a gap area between the guide shafts;
urging means for moving the guide shaft when the guide shaft is unlocked by blowing out the temperature fuse; 2. The differential pressure damper with a fire prevention mechanism according to claim 1, further comprising a stopper for fully closing the blade.