JPH0356850Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is designed for use in air conditioning ducts in high-rise buildings, etc., by detecting the temperature or smoke inside the air conditioning ducts in the event of a fire. The present invention relates to a damper switch with an inspection port that integrates the damper switch and the inspection port in a damper switch that improves fire and smoke prevention effects by immediately closing air conditioning ducts, etc.

(Prior art) As a conventional technology, for example, as shown in Fig. 5, there is a damper that detects temperature or smoke caused by fire or the like and automatically rotates a movable blade 6' whose opening can be adjusted in the closing direction. A damper switch A' equipped with an automatic closing mechanism E' and an inspection port B' for inspecting and confirming the opening/closing and operating status of the movable vane 6' or the status of the heat sensing fuse etc. from the outside are manufactured separately. There is one in which these are mounted and installed at different positions on the same surface of the casing 7'.

(Problem to be solved by the invention) However, in the above conventional technology, the damper switch
A' and inspection port B' are manufactured separately and installed at different positions on the same surface of the casing 7', which not only increases the manufacturing cost significantly, but also requires a lot of work to install and install them. The disadvantage is that it requires a lot of effort. Therefore, this invention provides a damper switch with an inspection port which aims to solve the drawbacks of the above-mentioned prior art by integrating the damper switch and the inspection port.

(Means for solving the problem) Temperature or smoke inside the air conditioning duct 4 due to a fire, etc. is detected by a heat sensing fuse F, etc., and the return spring 5 is connected to the heat sensing fuse F, etc. A damper switch A equipped with a damper automatic closing mechanism E that closes an air conditioning duct 4, etc. with a movable blade 6 that automatically rotates in the closing direction and whose opening degree can be adjusted.
In the damper switch A, an inspection port B having a viewing opening 2 is integrally connected to one side of the container body 1, so that the lid body 3 can be easily attached to and removed from the viewing opening 2 of the inspection port B. It was established.

(Function) Since the damper switch A and the inspection port B are connected to each other, manufacturing and installation are easy, and the lid 3 can be freely attached to and removed from the inspection opening 2 of the inspection port B. Since it is provided in the movable blade 6
When inspecting the opening/closing and operating conditions of the heat sensing fuse F, etc., the object to be inspected can be easily and reliably checked from the viewing opening 2 by simply removing the lid 3.

(Example) An example of a damper switch with an inspection port according to this invention will be described below with reference to the drawings.

In the drawing, A is a damper switch,
The damper is equipped with an automatic damper closing mechanism F that detects temperature or smoke caused by a fire or the like and automatically rotates the movable blade 6 whose opening degree can be adjusted in the closing direction. To explain this damper automatic closing mechanism E in more detail, the heat sensing fuse F is screwed and fixed to the body 1 so that it can be easily replaced. 4, and causes a locking pin 9 associated with the heat-sensitive fuse 8 to protrude from the container body 1, so that when the heat-sensitive fuse 8 melts, the locking pin 9 retracts. It's getting old. A locking hook 10 that engages and disengages from the locking pin 9 is a fixed hook 10a and a movable hook 10b that is biased by a spring 11 and can be retracted.
It is provided on an opening adjustment plate 13 that is inserted into the container body 1 and loosely attached to the vane shaft 12 which is biased in the closing direction (clockwise in FIG. 1) by the return spring 5. When the movable blade 6 fixed to is in the open position (the position indicated by the dotted line in Figure 3), the locking pin 9
The locking hook 10 is engaged and held against the repulsive force of the return spring 5, and when the heat-sensitive fuse 8 blows out in the event of a fire, the locking pin 9 retracts and locks the locking hook 1.
0, the movable blade 6 is automatically pivoted to the closed position (the position indicated by the chain line in FIG. 3) by the repulsive force of the return spring 5. In addition, a plurality of opening adjustment holes 14 are bored at predetermined intervals in the opening adjustment plate 13, and by gripping a grip type operation handle 15 fixed to the blade shaft 12, the fixed operation rod 15a can be adjusted. Opposite axis 15c
The connecting pin 16 provided on the movable operating rod 15b, which swings with
6 is inserted, the operating handle 15 and the opening adjustment plate 1
3 are integrally connected via a connecting pin 16, and the opening degree of the movable blade 6 fixed to the blade shaft 12 can be set by inserting the connecting pin 16 into an adjustment hole 14 having a predetermined opening degree. There is. After setting the opening degree of the movable blade 6, when the operating handle 15 is rotated in a predetermined direction (counterclockwise in FIG. 1) by a predetermined angle while compressing the return spring 5, the operating handle 15 and connecting pin 16
The opening adjustment plate 13, which is integrally connected through the opening adjustment plate 13, also rotates at the same time, and the locking hook 10 provided on the opening adjustment plate 13 connects the locking pin 9 of the heat sensing fuse F with its movable hook piece 10b. The movable blades 6 are reliably engaged by protruding and retracting against the springs 11, and the movable blades 6 are held in an open position with a predetermined opening degree and urged in the closing direction by the return spring 5. In the event of a fire, etc., when the heat-sensing fuse F senses the temperature in the flow path of the air conditioning duct 4 and the heat-sensitive fuse 8 melts,
Since the locking pin 9 is recessed and disengaged from the locking hook 10, the blade shaft 12, the operation handle 15, the connecting pin 16, and the opening adjustment plate 13 are all moved by the return spring 5.
The movable blade 6 is rotated by a predetermined angle in the closing direction (clockwise in FIG. 1) by the repulsive force, and the flow path of the air conditioning duct 4 is automatically closed by the movable blade 6 integrated with the blade shaft 12.

Reference numeral B denotes an inspection port integrally formed on one side of the body 1 of the damper switch A, and a viewing opening 2 is provided on the front surface of the inspection opening 2, into which a lid 3 is attached and removed using a set screw 17. It is set up so that it can be done easily. This lid body 3 is attached to the viewing opening 2 to maintain airtightness by interposing a sealing material 20, etc., and its fixing means include the set screw 17 of the embodiment, and it can be attached and detached with a simple operation. Any fixing means may be used.

The casing 7 is a hollow cylindrical body that is connected to the air conditioning duct 4 through a joint flange 18 to constitute a part of the air conditioning duct, and forms the outer wall of the movable blade 6. The movable blades 6 include the multi-blade of the embodiment, as well as
It is also possible to use a single blade, but in the case of multiple blades, the movable blades 6 are connected together by a connecting rod 19, and the movable blades 6 are operated all at once in the same phase. This movable vane 6 is a plate-shaped movable body that blocks or opens the flow path in the air conditioning duct 4, and when it is opened, there is little resistance to the air flow, and the fire and smoke prevention functions are ensured. In the figure, 21
is a pointer indicating the opening degree of the movable blade 6.

(Effects of the invention) As explained above, this invention has a simple structure in which the inspection port B is integrated with the damper switch A, compared to the conventional structure in which the inspection port B and the damper switch A are provided separately. By combining two parts into one, manufacturing can be done easily and efficiently, resulting in significantly lower product costs, and
Its installation is easy, and inspection port B
Since it is integrally adjacent to the damper switch A, it is convenient to inspect and check the operating status of the heat sensing fuse F and the movable vane 6 nearby, and the product value is also improved because the external appearance is not impaired. There are effects such as

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view showing an embodiment of the damper switch with inspection port according to this invention, Fig. 2 is a cross-sectional plan view, Fig. 3 is a front view of the damper switch installed in the casing, and Fig. 4 The figure is a side view thereof, and FIG. 5 is a perspective view of a conventional example. A...Damper switch, B...Inspection port, 1...
Vessel body, 2... Peep opening, 3... Lid body, E... Damper automatic closing mechanism.

Claims (1)

[Scope of utility model registration request] In a damper switch A equipped with a damper automatic closing mechanism E that detects temperature or smoke caused by a fire or the like and automatically rotates a movable blade whose opening degree can be adjusted in a closing direction, a body 1 of the damper switch A is provided. An inspection port B having a peep opening 2 is integrally connected to the inspection port B.
A damper switch with an inspection port, in which a lid body 3 is freely attached and detached to a viewing opening 2 of the damper switch.