JPS5832440B2 - Smoke tester for smoke detector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a compensation tester for a smoke detector that detects fire using smoke.

Smoke detectors are required to be inspected and maintained regularly, and as a means of inspection, they are actually exposed to smoke using a pressure tester to check whether they are operating normally.

However, in large-scale sites, the number of smoke detectors installed is enormous, and inspection work at such sites requires a great deal of effort and time.

To solve these problems, various types of compensation testers have been proposed that use a fan rotated by a motor to forcibly introduce smoke into the detector and exhaust it, thereby shortening the inspection time. However, these conventional ventilation testers require troublesome operations such as rotating the fan forward and backward when introducing smoke and exhausting smoke, and because sufficient air volume cannot be obtained, it takes a relatively long time when exhausting smoke. A satisfactory salary testing device has not yet appeared due to the time required.

The salary tester according to the present invention solves the above-mentioned problems and allows inspection work to be carried out quickly with extremely simple operation, and will be described in detail below with reference to the drawings.

FIG. 1 is a longitudinal sectional view showing a smoke exhaust state in an embodiment of the salary increase tester according to the present invention.

This salary tester is roughly divided into a smoke chamber 1, a switching valve 2, a main body 3, and a portion between a hood 4.

The smoke chamber 1 includes a bowl-shaped container 11 whose bottom plate is connected to the tip of an operating rod 5 and a plurality of outside air introduction holes 10 formed in the peripheral wall, and a bowl-shaped container 11 having a plurality of outside air introduction holes 10 bored in the peripheral wall thereof, and a bowl-shaped container 11 having a bottom plate connected to the tip of the operating rod 5, and a bowl-shaped container 11 having a plurality of outside air introduction holes 10 formed in the peripheral wall thereof. The bowl-shaped container 11 and the lid 13 are fitted into each other, and the lid 13 is formed with a flange 12 that protrudes toward the outer circumference. It is fixed by a clip 14 that is attached.

Inside the smoke chamber 1, a pedestal 15 on which a smoke generating material 6 such as an incense stick is placed is fixed to the bottom plate of the bowl-shaped container 11.

A lid 17 with a large number of small holes 16 is removably provided in the upper opening of the pedestal 15 to prevent the smoke material 6 from dissipating.

The main body 3 consists of a bowl-shaped casing 30 with an open top end;
A plurality of outside air introduction holes 31 are bored around the bottom plate of this casing 30.

Inside the housing 30, there is a fan 3 directed toward the top opening.
2, a motor 33 for rotating the fan 32, a power source 34 for the motor 33, and a switch 35.

This housing 30 is attached to the collar 12 of the lid 13 forming the smoke chamber 1 so as to be able to slide on a plurality of vertically fixed guide rods 7, and is always urged upward by a spring 8. There is.

A smoke/outside air inlet hole 36 is bored in the center of the bottom plate of the casing 30, and a return outlet hole 18 is provided in the lid 13 forming the smoke chamber 1 at a position facing the smoke/outside air inlet hole 36. It's worn.

A support rod 20 is provided on the main body 3 side, penetrating through the smoke/outside air introduction hole 36 and the return outlet hole 18 and hanging down, the tip of which reaches into the smoke chamber 1. A switching valve 2 is fixed to the.

In order to protect the switching valve 2, a protection plate 22 having a large through hole 21 is provided on the back side of the lid 13.

The hood 4 is made of a cylindrical body, and its lower end opening 40 fits into the upper end opening 37 of the main body casing 30.

The length of this hood 4 is set to such a length that even if the upper end opening 41 comes into contact with the ceiling surface C where the smoke detector is installed, the tip of the smoke detector will not come into contact with the fan 32. I'll keep it.

Note that in order to prevent the tip of the smoke detector from coming into contact with the fan 32, a wire mesh may be provided at the lower end opening 40 of the hood 4.

To inspect a smoke detector using the salary tester K according to the present invention constructed as described above, first, the lid 13 is removed from the bowl-shaped container 11 of the smoke chamber 1 to expose the base 15.

Then, the lid 16 is removed from the pedestal 15, a pre-ignited smoke material 6 is placed thereon, the lid 16 is attached, and the lid 13 is fitted onto the bowl-shaped container 11 and returned to its original state.

Next, the preparation is completed by turning on the power switch 35 and rotating the fan 32.

To introduce and discharge smoke into the smoke detector, the smoke detector is positioned in the hood 4 by operating an operating rod 5 that reaches from the hand to near the ceiling surface C.

Once the smoke detector is housed in the hood 4, push up the operating rod 5 to press the entire salary tester against the ceiling surface C.

FIG. 2 shows a state in which the salary tester K is pressed against the ceiling surface C. In this way, the hood 4 and the main body 3 are pushed onto the guide rod 7 against the force of the spring 8. , and remove the bottom plate of the main body casing 30 and the lid 13 of the smoke chamber 1.
Close contact with the top surface.

Then, the outside air introduction hole 31 bored around the bottom plate of the main body casing 30 is closed by the collar 12 of the lid 13 to prevent outside air from flowing into the main body 3, and at the same time, it is brought into close contact with the lid 13. The switching valve 2, which had been previously closed, is also pushed down, so the return outlet hole 18 is opened, and the smoke that had filled the smoke chamber 1 is transferred to the return outlet hole 18 and the smoke/outside air on the main body 3 side, as shown by arrow A. It is introduced into the main body 3 through the introduction hole 36.

The smoke introduced into the main body 3 is sent to the smoke detector side by the rotating fan 32, and is agitated so that the smoke with less unevenness is quickly drawn into the smoke detector through the introduction hole d. will be introduced to

The advantage of using smoke with less unevenness is that it makes it easier to test the operation of accumulation-type smoke detectors, which are activated when smoke of a certain concentration or more flows in for a certain period of time, which has been widely used recently. It is.

In this way, the smoke detector will operate if its function is normal.

Next, to remove the smoke that has accumulated inside the smoke detector, operate the operating rod 5 to create a gap between the ceiling surface C and the tip of the hood 4 as shown in FIG. Place the smoke detector in the hood 4 so that it can be opened.

If this smoke evacuation work is to be performed as a continuous operation of the above-mentioned salvage work, it is sufficient to open a gap between the ceiling surface C and the tip of the hood 4 by slightly pulling down the operating rod 5 that was pressed against the ceiling surface C. .

In this way, the hood 4 and main body 3 are pushed up by the force of the spring 8, and the switching valve 2
is in close contact with the lid body 13 to close the return outlet hole 18 and close the smoke chamber 1.
At the same time as preventing smoke from flowing out, a gap is opened between the lid 13 and the bottom plate of the main body lid 30, so the smoke/outside air introduction hole 36 is opened and outside air is introduced into the main body 3.

Furthermore, since a gap is created around the flange 12 of the lid 13 and the bottom plate of the main body casing 30, the plurality of outside air introduction holes 31 are opened, and more outside air is introduced into the main body 3.

In this way, a large amount of outside air is introduced during smoke evacuation, so
The air volume by the fan 32 increases dramatically compared to when the air is turned on.
The air flow follows the path of rising inside the hood 4 as shown by arrow B and being discharged from the gap between the smoke detector and the tip of the hood 4, and the smoke inside the smoke detector is quickly sucked and discharged. .

It should be noted that if the diameter of the smoke/outside air introduction hole 36 is made sufficiently large, the above-mentioned smoke evacuation function can be sufficiently performed, so there is no need to provide a plurality of outside air introduction holes 31, and the smoke evacuation method is as follows. As mentioned above, instead of placing the smoke detector inside the hood 4, the air pressure tester K is brought closer to the smoke detector from the side, and a large amount of air blown out from the tip of the hood 4 is placed inside the smoke detector. It is also possible to spray the smoke into one of the introduction holes d and exhaust the smoke from the other introduction hole d.

In actual operation tests, an upper limit is specified for the speed of smoke when pumping, and the concentration of smoke must also be constant; on the other hand, it is better to exhaust the smoke as quickly as possible. Therefore, the salary tester according to the present invention is even more effective.

As described above, the salary increase tester according to the present invention allows salary increase and smoke evacuation work to be performed only by operating the switching valve by moving the operating rod up and down.
In addition, since the air volume during smoke exhausting is dramatically greater than that during smoke evacuation, inspection work can be carried out quickly with extremely simple operations, which is useful for disaster prevention.

[Brief explanation of drawings]

The drawing is a longitudinal cross-sectional view showing one embodiment of the smoke detector salvage tester according to the present invention, and FIG. 1 shows the smoke exhaust state.
Figure 2 shows the respective salary conditions. 5... Operating rod, 1... Smoke chamber, 3...
...Body, 37...Body opening, 32...
...Fan, D...Smoke detector, 4...
・Hood, 31, 36...Outside air introduction hole, 18・
... Flue outlet.

Claims (1)

[Claims] 1. A smoke chamber connected to the upper end of the operating rod, a main body having an opening at the upper end and installed so as to be movable up and down with respect to the smoke chamber, and a smoke chamber provided within the main body and oriented toward the opening of the main body. a fan; a hood connected at one end to the main body and into which a smoke detector is inserted; an outside air introduction hole provided in the main body; and a hood provided in the smoke chamber to send smoke into the main body. 1. A control tester for a smoke detector, comprising a flue outlet, and opening and closing of the outside air introduction hole and the flue outlet are linked with the up and down operation of the operating rod.