JPH08293083A - Testing equipment for fire sensor - Google Patents

Abstract

PURPOSE: To provide the testing equipment adapted to alarm test of a box-like fire sensor which is attached to a system ceiling by forming the aperture part in the upper end of an enclosing cylinder, which covers the periphery of a box-like smoke suction part and is internally provided with an artificial smoke generation part, to such form that the smoke suction part can be inserted to this aperture part without a gap. CONSTITUTION: An enclosing cylinder 2 of a tester 1 for fire sensor is constituted into a bottomed angular cylinder, and a smoke generation part 4 is stored on the inside bottom, and an aperture part 3a is rectangularly formed in the upper face of the encloding cylinder 2, and its length L1 and width L2 are made approximately equal to those of the fire sensor. The smoke suction part is inserted into the aperture part 3a to cover the periphery without a sap. The switch of a grip bar 5 is operated with the smoke suction part enclosed with the enclosing cylinder 2 to generate artificial smoke from the generation part 4, and generated artificial smoke is made rise in the air line of the main body from the inlet of the smole suction part, and the operation to take a countermeasure against the occurrence of a fire is simulated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a test device for a fire detector, and more particularly to a fire detector for carrying out a warning test of a box-shaped fire detector attached to a strip-shaped opening formed in a system ceiling. The present invention relates to a test device for a container.

[0002]

2. Description of the Related Art FIG. 12 is an explanatory view of a conventional fire detector and its testing device. In FIG. 12, 101 is a ceiling plate 1.
A round ceiling hole is formed in 02, and 103 is a wiring such as a power supply / signal line. Reference numeral 104 denotes a main body of a cylindrical fire detector having a smoke detecting section 105 therein, and 106 denotes an insect-proof wire mesh provided at a smoke inlet of the main body 104. 107 is the main body 1
04 is an exposed type base for attaching to the ceiling plate 102 side, and is fixed to the ceiling plate 102 by fixing means such as screws or bolts / nuts (not shown).

[0003] Further, the two-dot chain line 200 is a tester, 201
Is a pseudo smoke generator, and 202 is a grip bar. Tester 200
Is made in a bowl shape with an open top, and a pseudo smoke generator 201 is provided inside. As shown, the tester 200
The main body 104 of the fire detector mounted on the ceiling is covered with, and pseudo smoke is generated by the pseudo smoke generator 201 to perform a fire detector alarm test.

[0004]

By the way, in recent years, in the construction industry, a beam member having a special unit structure is used for a ceiling of a high-rise building or the like to create a flat interior design with a small number of protrusions. ing. A metal beam called "T bar" is used for the beam member of the unit structure. Two "T-bars" are connected in an inverted T-shape with a space between them.

A ceiling plate is placed on an outer protruding portion of the inverted T-shape of a plurality of beam members in which "T-bars" are connected in a pair structure, and a strip-shaped opening formed along the inner protruding portion. Is normally open and used for ventilation and ventilation. On the other hand, in the case of the above-described conventional fire detector in which the main body is attached to the ceiling surface by using the round hole, there is a disadvantage that the original idea of the system ceiling cannot be met.

Therefore, the inventors of the present application have proceeded with the development of a box-shaped rectangular parallelepiped fire detector which can be directly attached to the belt-shaped opening of the system ceiling in place of the conventional cylindrical fire detector. However, if a conventional bowl-shaped fire tester is used to perform a warning test on such a box-shaped fire detector, a large gap is created between the belt-shaped opening on the system ceiling and the circular open surface of the tester. Will occur.

As a result, since the strip-shaped opening on the system ceiling is sometimes used for the air passage as described above, the generated pseudo smoke flows out together with the air flow in the air passage and is wasted. However, there is a problem that the test apparatus of 1 cannot be applied as it is.

The present invention has been made in order to solve the above-mentioned problems of the conventional tester, and to realize a test apparatus suitable for the alarm test of the box-shaped fire detector mounted on the system ceiling. The purpose is.

[0009]

According to the present invention, there is provided an enclosing cylinder, which is attached to a system ceiling and covers a periphery of a box-shaped smoke absorbing portion exposed from a band-shaped opening, and in which a pseudo smoke generating portion is provided. Test of a fire detector that is equipped with a gripping means for gripping a cylinder, and has a similar shape in which the smoke absorption part can be inserted without a gap into the opening at the upper end of the surrounding cylinder, or a circular shape of a size that is almost in contact with the bottom surface of the smoke absorption part. The device is configured. In addition, the fire detector testing device is configured by using a detachable adapter with the opening of the enclosing cylinder being separated. Further, the fire detector testing device is provided with a display means for displaying the position of the opening around the envelope.

[0010]

When carrying out the alarm test, the gripping rod of the test device is gripped and the envelope is raised from directly below the mounting position of the main body of the fire detector toward the ceiling surface. At that time, the relative positions of the opening of the test apparatus and the smoke absorbing part of the main body are made to coincide with each other, and the smoke absorbing part is inserted into the surrounding cylinder. Then, when the upper surface of the envelope contacts the ceiling surface, the smoke absorbing portion of the main body of the fire detector is almost completely enclosed by the envelope.

With the smoke absorbing portion surrounded by the envelope, the switch of the gripping rod is operated to generate pseudo smoke from the generating portion.
The generated pseudo smoke rises from the inflow port of the smoke absorbing part to the ventilation path that runs through the inside of the main body, and the action corresponding to the occurrence of the fire is simulated. As a result of the alarm test using such pseudo smoke, it is confirmed that the fire detector is normal or abnormal.

In another embodiment of the present invention, a cap-like adapter for testing which is detachable and has a positioning function is prepared. The prepared test adapter is detachably mounted on the upper surface of a conventional bowl-shaped tester. In the mounted state, the elastic force of the locking claw firmly attaches the adapter to the upper part of the tester. Further, if the display piece and the paint on both sides are viewed along the opening of the system ceiling or the like, the relative positioning between the opening and the smoke absorbing portion is performed.

[0013]

【Example】

Embodiment 1 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram of the configuration of an embodiment of the present invention.

In FIG. 1, reference numeral 1 is a fire detector tester. 2 is the envelope of the tester 1, 3 is a lid, 3a is a lid 3
The openings 4, 4 are smoke generators, and 5 is a grip bar. The envelope 2 is formed in the shape of a square cylinder with a bottom, and the smoke generating unit 4 is housed on the inner bottom surface. Further, the opening 3a is the surrounding tube 2
Is formed in a rectangular shape on the upper surface of the machine and has a length L1 and a width L in the longitudinal direction.
2 was chosen to be about the same size as the fire detector described below. Then, the smoke absorbing part is inserted into the opening 3a,
It is designed to cover the periphery without any gaps.

2 to 4 show how the fire detector having the smoke absorbing portion inserted into the opening 3a of the tester 1 is attached to the ceiling surface.
Is shown in. 2 to 4, 6 is a system ceiling, and 7 is the above-mentioned T bar. Two T-bars 7 are arranged in an inverted T-shape with a strip-shaped opening 8 having a constant width, and are connected by a metal fitting (not shown). The T-bars 7 combined in a pair structure are arranged in rows from a roof set or floor beams on the upper floors, and are hung vertically in the ceiling space. A ceiling-covered ceiling plate 9 is placed and held on a portion of the vertically extending T-bars 7 that is horizontally opposed to and protrudes between adjacent rows.

Reference numeral 10 is a step-like fixing metal fitting, and 20 is a mounting metal fitting, both of which are used for attaching a fire detector, the structure of which is shown in FIGS. 11 and 12 are fixing brackets 10
A burring threaded hole is provided on the top of the, and 13 and 14 are tightening screws. The fixing metal fitting 10 is laid across the opening 8 of the system ceiling 6 in a state in which both legs are kept at regular intervals (see FIG. 2). The mounting bracket 20 is composed of a gate-shaped holding frame 21, a frame frame 23 made of a slightly thin plate material having a collar piece 22, and two hook-shaped spring plates 24.

Spring plates 24 are fixed to the left and right of the frame 23 by spot welding, and the frame 23 is integrally fixed to the open end of the holding frame 21 by the same means. The mounting bracket 20 in which 23 parts are integrally fixed is formed in an inverted U-shape in longitudinal section, and a rectangular cylindrical mounting chamber 25 is formed inside. 30
Is a terminal mechanism, and 31 to 33 are three sets of wires for input and output. The terminal mechanism 30 is attached to the upper part of the mounting bracket 20,
The wirings 31 to 33 drawn out from the back of the ceiling are connected.

Reference numeral 40 is a main body of the fire detector. Body 40
As shown in FIG. 7, a rectangular parallelepiped box having a small contour shape is molded with synthetic resin, and recessed grooves 41 are formed on both side surfaces and a connector 42 is provided on the upper portion. Inside the main body 40, a printed board on which electronic components are mounted, an optical stand, and the like are arranged. The inside of the optical table has a labyrinth structure, which is configured to block external light and allow only smoke generated by a fire to flow.

Reference numeral 43 is an indicator light (confirmation light) which is connected to a printed circuit board and hung down, 44 is an elongated rectangular smoke inlet,
45 is an insect screen. A plurality of inflow ports 44 are provided through the side wall around the lower part of the main body 40, and an insect screen is attached to the inside. The smoke absorbing portion 46 is formed by the portion of the main body 40 provided with the inflow port 44.

Then, the mounting member 20 is fixedly mounted in the strip-shaped opening 8 formed on the ceiling surface by the fixing member 10 extending over the T-bar 7. In the mounting chamber 25 of the mounting bracket 20 fixed to the opening 8, the main body 40 of the fire detector is installed.
Is inserted from the floor surface side, and the spring plate 24 is dropped into the drop groove 41 and locked. Simultaneously with the lock, the connector 42 causes the body 40 to connect the wirings 31 to 33 via the terminal mechanism 30.
Electrically connected to. In this way, as shown in FIGS. 2 to 4, the body 40 of the fire detector is mounted on the ceiling with the smoke absorbing portion 46 exposed on the ceiling surface.

When a fire occurs, the heated smoke rises indoors and flows into the interior from the respective inlets 44 of the fire detector 40 attached to the opening 8 of the system ceiling 1.
The smoke that has flowed in rises up the ventilation path that runs through the inside of the main body 40 of the fire detector and is discharged outside the device. The rising smoke is guided toward the center of the labyrinth of the optical table in the middle of the air passage.

On the other hand, the light projecting element in the optical stand is periodically pulsed. Then, the light projected from the light projecting element is scattered according to the concentration of the inflowing smoke, and the light receiving element detects this scattered light. Wiring 3 when smoke density exceeds the set value
It is sent to the receiver via 1 to 33 and sounds an alarm device provided indoors to notify the occurrence of a fire. At the same time, the indicator light 43 is turned on, and the fire detector operated by the fire is confirmed.

Further, at the time of regular inspection, a warning test is carried out as follows. When carrying out the alarm test, the grip bar 5 of the test apparatus 1 is grasped and the main body 40 of the fire detector is grasped.
Insert the envelope 2 toward the ceiling surface from directly below the mounting position. At this time, the relative positions of the opening 3a of the test apparatus 1 and the smoke absorbing portion 46 of the main body 40 are aligned and the smoke absorbing portion 46 is inserted into the envelope 2. When the upper surface of the envelope 2 comes into contact with the ceiling surface, the smoke absorbing portion 46 of the main body 40 of the fire detector.
Will be almost completely surrounded by the envelope 2.

With the smoke absorbing portion 46 surrounded by the envelope 2,
For example, the switch of the grip bar 5 is operated to generate pseudo smoke from the generation unit 4. The generated pseudo smoke rises in the ventilation passage in the main body 40 from the inflow port 44 of the smoke absorbing portion 46, and the operation corresponding to the occurrence of the fire is simulated in the same manner as described above. As a result of the alarm test using such pseudo smoke, it is confirmed that the fire detector is normal or abnormal. Although a rectangular envelope is used in this embodiment, a circular envelope or an envelope having a shape in which a trapezoidal weight whose opening side is wide and a circle are overlapped with each other may be used.

Embodiment 2 In Embodiment 2 of the present invention, as shown in FIG. 8, a cap-shaped adapter A having the opening 3a of Embodiment 1 is formed. Reference numeral 15 is a display piece formed on both sides of the peripheral surface of the adapter A, and 16 is a locking claw. The display pieces 15 are provided so as to project on both sides of the extension of the opening 3a, and display the position of the opening 3a in the longitudinal direction. Further, the locking claw 16 is bent slightly inward by the left and right narrow split grooves, and is given an elastic contracting force toward the inner diameter direction.

The adapter A of the second embodiment is mounted on the upper surface of the conventional tester 200 shown in FIG. In the mounted state, the elastic force of the locking claws 16 firmly attaches the adapter A to the upper portion of the tester 200. If the display pieces 15 on both sides are arranged along the opening 8 of the system ceiling 6, the opening 3a and the smoke absorbing portion 46 are positioned. Out of this
If the locking claw 16 is largely projected and engaged with the hole on the side of the surrounding cylinder, the connection between the adapter A and the tester 200 can be firmly configured.

Embodiment 3 In FIG. 9 showing the structure of Embodiment 3, 17 is a pair of closing claws, and 18 is paint. The distance between the pair of closing claws 17 is made slightly wider than the width of the long side of the frame frame 23 so as to close the openings 8 on both sides of the system ceiling 1. Further, the paint 18 is, for example, a color that is easily noticeable, for example, red, and is applied on the extension of the same width as that of the red opening 3a. The paint 18 has a positioning function similar to the display piece 15 of the second embodiment, and it is desirable that the paint 18 is applied up to the vicinity of the grip bar 5 of the envelope 2 if necessary. According to the second and third embodiments, the conventional tester 200 can be used for the system ceiling, which is convenient.

Fourth Embodiment In a fourth embodiment of the present invention, as shown in FIG. 10, a cap-shaped adapter A having a circular opening 47 is formed. The diameter of the opening 47 is made to be substantially in contact with the four apexes of the lower surface of the smoke absorbing portion 46, and the smoke absorbing portion 46 of the fire detector 40 can be covered without considering the direction of the opening 47. In this opening 47, the opening 47 protruding from the fire detector in the longitudinal direction of the fire detector is closed by the frame 23 of the mounting device 20, and the opening 47 protruding in the lateral direction of the fire detector is on the ceiling. Since it is blocked by the plate 9, the pseudo smoke generated from the tester does not flow out to the strip-shaped opening of the system ceiling,
Can flow into a fire detector. Although the circular opening 47 is shown in the embodiment, it may be elliptical.

Embodiment 5 FIG. 11 shows still another embodiment of the tester using the adapter,
Reference numeral 48 is a fire detector tester, 49 is an envelope of the tester 48, 50 is a bellows forming an upper portion of the envelope 49, 51 is an adapter, 52 is an opening of the adapter 51, 53 is a grip bar,
Reference numeral 54 is a supporting metal fitting for the gripping rod 53, 55 is a thumbscrew connecting the surrounding cylinder 49 and the supporting metal fitting 54 for the gripping rod 53, 56 is a gas cylinder for generating pseudo smoke, and 57 is a guide metal fitting for the gas cylinder 56. The adapter 51 is a plate-shaped rectangular opening 5
2, and the adapter 51 is fitted into the long diameter portion of the bellows 50 of the surrounding cylinder 49.

The relative position of the opening 52 of the adapter 51 attached to the tester 48 and the smoke absorbing part 46 of the main body 40 of the fire detector are matched, and the tester 48 is pushed up to raise the smoke absorbing part 46.
Is inserted into the bellows 50. Then, when the tester 48 is further pushed up after the upper surface of the bellows 50 comes into contact with the ceiling surface, the adapter 51 substantially comes into contact with the ceiling surface, and the smoke absorbing portion 46 of the main body 40 of the fire detector causes the adapter 51, the bellows 50 and It is almost completely surrounded by the envelope 49. Although the opening 52 of the adapter 51 has a square shape, it may have a circular shape or an elliptical shape that is substantially in contact with the bottom surface of the smoke absorbing section 46.

Although the above-described embodiments of the present invention have been described by exemplifying the case where the fire detector is attached to the ceiling, the present invention can also be applied to a side wall other than the ceiling. Further, although the opening at the upper end of the surrounding cylinder is framed by the lid, the opening may be formed at the upper end of the surrounding cylinder.

Further, the display piece of the adapter and the paint have been described as the display means for directional positioning of the opening of the adapter, but the display piece may be provided in the envelope. Further, instead of the paint, a sticker or a tape colored in a color distinguishable from this may be attached to the adapter or the envelope. Further, as shown in FIG. 11, a display means for indicating the direction of the opening portion of the adapter is provided with a part such as a support metal or a fixing screw of a grip bar which is provided on the center line of the envelope and outside the envelope in advance. You may use as.

Further, the fire detector which detects the occurrence of a fire by the change in the amount of light received by the light receiving element due to the reflected light of smoke generated during a fire inside the labyrinth has been described. It may be a fire detector that utilizes the resistance change or the like, and in this case, the test apparatus may be provided with a heat generation unit instead of the smoke generation unit. Further, although the case where the surrounding cylinder is attached to the tip of the grip bar is shown, it is more convenient if the structure is made to be an easy-to-grip structure or a stretchable grip means.

[0034]

According to the present invention, a surrounding cylinder which is attached to the system ceiling and is exposed from a band-shaped opening and which surrounds a box-shaped smoke absorbing section and in which a pseudo smoke generating section is provided, and the surrounding cylinder is gripped. A fire detector test device was provided, which was provided with a gripping means and was formed into a similar shape in which the smoke absorbing portion could be inserted into the opening at the upper end of the envelope without a gap, or in a circular shape having a size substantially in contact with the bottom surface of the smoke absorbing portion. In addition, a fire detector test device was constructed in which the opening of the surrounding cylinder was of a separable type and was configured as a detachable adapter. Further, a test device for a fire detector was constructed, which was provided with a display means for displaying the position of the opening around the surrounding cylinder.

As a result, a tester having a rectangular tube-shaped or cylindrical lid provided with a circular opening having a shape similar to the contour of the main body of the fire detector or a size almost in contact with the bottom surface of the fire detector. Since it is configured, it is possible to provide a test apparatus suitable for a system ceiling without waste of energy for generating pseudo smoke. Moreover, if an adapter is properly attached as necessary, a conventional bowl-shaped test device can be used as it is. In particular, since the display means for displaying the position of the opening is provided, the smoke detector on the side of the fire detector is surrounded while being positioned in the envelope, and an accurate alarm test can be performed in a short time.

Therefore, according to the present invention, it is possible to provide a test device suitable for the alarm test of the box-shaped fire detector.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a first embodiment of the present invention.

FIG. 2 is a side view showing how the fire detector is attached to the system ceiling.

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a bottom view of FIG.

FIG. 5 is a perspective view of the fixing bracket of FIG.

FIG. 6 is a perspective view of the fitting of FIG.

7 is a perspective view of the body of the fire detector of FIG.

FIG. 8 is a structural explanatory view of a second embodiment of the present invention.

FIG. 9 is a structural explanatory view of a third embodiment of the present invention.

FIG. 10 is a structural explanatory view of a fourth embodiment of the present invention.

FIG. 11 is a structural explanatory view of a fifth embodiment of the present invention.

FIG. 12 is an explanatory diagram of a conventional fire detector and its testing device.

[Explanation of symbols]

 1 Tester 2 Envelope 3a Opening 4 Smoke generating part 5 Grip bar 6 System ceiling 7 T bar 8 Strip-shaped opening 9 Ceiling board 10 Fixing metal fitting 15 Display piece 16 Locking claw 17 Closing claw 18 Paint 20 Mounting metal fitting 25 Mounting room 30 Terminal Mechanism 40 Main Body of Fire Detector 44 Inlet 46 Smoke Absorbing Part 47 Opening 48 Tester 49 Enclosing Cylinder 50 Bellows 51 Adapter 52 Opening 53 Support Bracket 54 Thumbscrew A Adapter

Claims (3)

[Claims] 1. An envelope cylinder which is provided on a system ceiling and covers the periphery of a box-shaped smoke absorbing part exposed from a band-shaped opening, and in which a pseudo smoke generating part is provided, and a gripping means for gripping the envelope cylinder. A test of the fire detector, characterized in that the opening at the upper end of the envelope is formed in a similar shape in which the smoke absorbing portion can be inserted without a gap, or in a circular shape having a size almost in contact with the bottom surface of the smoke absorbing portion. apparatus. 2. The fire detector test apparatus according to claim 1, wherein the opening portion of the surrounding cylinder is of a separable type and configured as a detachable adapter. 3. The fire detector testing apparatus according to claim 1, further comprising display means for displaying a position of the opening around the surrounding cylinder.