JPH08129684A - Operation tester for flame sensor - Google Patents

Abstract

PURPOSE: To provide an operation tester for flame sensor which can easily test the operation of flame sensor with a sufficient efficiency. CONSTITUTION: An infrared-ray light source 8 and an ultraviolet-ray light source 11 are driven by a 1st driving circuit 10 which is supplied with the electric power from a battery 17 and a 2nd driving circuit which includes a high voltage generating circuit, and the infrared rays emitting by the infrared-ray light source 8 are guided to the flame sensor through a film 14 and a 1st opening 5a and the ultraviolet rays emitted by the ultraviolet-ray light source 11 are guided to the flame sensor through wire netting 15 are a 2nd opening part 5b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation tester for testing the operation of a flame detector, and more particularly to a portable operation test applicable to both infrared type and ultraviolet type flame detectors. Regarding vessels.

[0002]

2. Description of the Related Art Generally, a flame detector is installed on a ceiling surface or an upper surface of a wall in a room and detects radiant light such as infrared rays or ultraviolet rays emitted from a flame at the time of fire. This flame detector has an important role of detecting a fire by detecting a flame, and a reliable operation is required.
It is obligatory to carry out regular operation inspections.

Conventionally, as an operation test method of a flame detector,
For example, as disclosed in Japanese Utility Model Publication No. 59-10582, each flame sensor is provided with a test device including a test light source in advance, and when the test light source is operated, the sensor performs a predetermined operation. Was testing whether to do. However, this test method has a problem in that a test device must be built in each flame detector, which greatly increases the cost of the flame detector. In particular, with the rise of buildings in recent years, a large number of detectors have been installed in one building, and the increase in the cost of one flame detector is extremely burdensome for the entire fire alarm system. Becomes

There is also a method of conducting a test using an operation tester as shown in FIG. This operation tester is a tester for an ultraviolet flame detector, and includes a halogen lamp 81 as a test light source and a battery (not shown).
At the time of the test, the operation tester is placed on the floor by the tripod 82, and the halogen lamp 81 irradiates the ultraviolet ray for the test toward the flame sensor installed on the ceiling surface or the wall surface, and the flame sensor is notified. It is confirmed whether or not to do it. However, there are cases where not only the ultraviolet type flame detector but also the infrared type flame detector are installed in the building, and when these flame detectors are tested, in reality they are as shown in FIG. In addition to the operation tester for ultraviolet rays, some kind of operation tester for infrared flame detectors must be carried at the same time to test the inside of the building, and the test work becomes heavy work, resulting in reduced work efficiency. There was a problem.

[0005]

As described above, in the conventional flame detector operation test method, the cost of the fire alarm system as a whole is high, or the test work is difficult and the work efficiency is reduced. was there. The present invention has been made to solve such a problem, and an object thereof is to provide an operation tester of a flame detector that can easily and efficiently perform an operation test of the flame detector.

[0006]

An operation tester for a flame detector according to claim 1 of the present invention drives an infrared light source emitting infrared rays, an ultraviolet light source emitting ultraviolet rays, and an infrared light source. A first drive circuit for driving, a second drive circuit for driving the ultraviolet light source, a battery for supplying power to the first and second drive circuits, an infrared light source,
Infrared window portion for accommodating the ultraviolet light source, the first and second drive circuits and the battery, and for guiding the infrared light emitted from the infrared light source to the outside, and for guiding the ultraviolet light emitted from the ultraviolet light source to the outside And a casing in which the window portion for ultraviolet rays is formed.

The operation tester of the flame detector according to claim 2 is
The operation tester according to claim 1, further comprising: an auxiliary rod mounting member formed on the casing so as to project outward, and the casing is aligned and held with respect to the flame detector during the operation test while being attached to the auxiliary rod mounting member. It is provided with an auxiliary rod for doing.

The operation tester of the flame detector according to claim 3 comprises:
The operation tester according to claim 1 or 2, wherein the infrared window portion of the casing covers the first opening portion formed in front of the infrared light source and the first opening portion, and protects the infrared light source from dust. A first window member for protecting the ultraviolet light source from a second opening formed in front of the ultraviolet light source and covering the second opening and protecting the ultraviolet light source from dust. It includes a second window material.

A flame detector operation tester according to claim 4 is
The operation tester according to any one of claims 1 to 3, wherein the infrared window portion and the ultraviolet window portion are formed in a common surface of the casing, and the protective cover is provided along the circumference of the common surface. It is provided.

A flame detector operation tester according to claim 5 is
The operation tester according to any one of claims 1 to 4, wherein the second drive circuit includes a high voltage generation circuit that generates a high voltage for driving the ultraviolet light source, and the first drive circuit is mounted. And a second substrate which is mounted with an ultraviolet light source and a high voltage generation circuit and which is separated from the first substrate.
And a substrate of.

[0011]

In the operation tester according to claim 1 of the present invention,
The casing has an infrared window portion and an ultraviolet window portion, and the infrared light source and the ultraviolet ray for testing emitted from the infrared light source and the ultraviolet light source housed in the casing are respectively the infrared window portion and the ultraviolet window portion. Through the casing.

According to a second aspect of the operation tester of the first aspect, in the operation tester of the first aspect, the auxiliary rod is attached to the auxiliary rod mounting member, and the auxiliary rod is used during the operation test to prevent the fire detection unit of the flame detector. The casing is aligned with respect to the front.

According to a third aspect of the operation tester of the first or second aspect, the first and second window members respectively protect the infrared light source and the ultraviolet light source in the casing from dust. .

The operation tester according to claim 4 is the operation tester according to any one of claims 1 to 3.
Even if the casing and flame detector contact each other when the casing is brought close to the flame detector so that the infrared window and the ultraviolet window face the flame sensor, the flame is protected by the protective cover provided on the casing. The sensor and the actuation tester are protected from each other.

The operation tester according to claim 5 is the operation tester according to any one of claims 1 to 4,
Since the first substrate and the second substrate are separated from each other,
The ultraviolet light source and the high voltage generation circuit mounted on the second substrate prevent the first drive circuit mounted on the first substrate from being affected.

[0016]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows the construction of a flame detector operation tester according to an embodiment of the present invention. The box-shaped casing 1 is formed of a main body base 2 and a cover 3 fixed to the main body base 2 by cover fixing screws 4. As shown in FIG. 2, the front portion 5 of the casing 1 formed from a part of the main body base portion 2 has a circular first opening 5a.
And a rectangular second opening 5b are formed. First
A substantially frustoconical reflecting mirror 6 covering the opening 5a is fixed to the back of the opening 5a, and an infrared light source 8 is attached to the reflecting mirror 6 via a light bulb holder 7. The infrared light source 8 is small and has a small amount of light, for example, 2.5V.
A -0.5A Krypton-Billiken light bulb is used.
A first substrate 9 is attached to the base 2 of the main body, and a first substrate 9 for driving the infrared light source 8 is attached to the first substrate 9.
The driving circuit 10 is mounted, and the infrared light source 8 (not shown) is electrically connected to the first driving circuit 10.

An ultraviolet light source 11 for radiating ultraviolet rays is arranged at the back of the second opening 5b. The ultraviolet light source 11 is attached to the second substrate 12 separated from the first substrate 9 and uses a small-sized ultraviolet discharge tube with a small amount of light. A second drive circuit is formed to drive the ultraviolet light source 11, and the high voltage generation circuit 13 for applying a high voltage to the ultraviolet light source 11 in the second drive circuit is the second substrate 12. The rest of the circuits such as the oscillation circuit are mounted on the first substrate 9.

A film 14 is attached on the back surface of the front surface portion 5 of the casing 1 as a first window member covering the first opening 5a. The film 14 is formed of, for example, polypropylene that is transparent to infrared rays. Similarly, on the back surface of the front surface portion 5 of the casing 1, as a second window member that covers the second opening portion 5b, a fine mesh 15
Is attached. These films 14 and wire mesh 1
Reference numeral 5 is for respectively protecting the infrared light source 8 and the ultraviolet light source 11 from dust outside the casing 1, and therefore, the wire net 15 covering the second opening 5b is radiated from the ultraviolet light source 11. The fineness is set so that dust can be blocked without significantly impairing the amount of ultraviolet rays. The first window portion of the present invention is formed from the first opening portion 5a and the film 14, and the second opening portion 5b and the wire mesh 15 are formed.
The second window portion is formed from. A wire mesh may be used as the first window material, and a film having a transparency to ultraviolet rays may be used as the second window material. Both the first and second window materials transmit infrared rays or ultraviolet rays, respectively. It can also be a film or a wire mesh.

Further, the battery holder 1 is provided in the casing 1.
6 is provided, and four AA batteries 17 are attached to the battery holder 16 as batteries for supplying power to the first drive circuit 10 and the second drive circuit. The battery and the first and second drive circuits are electrically connected via the power switch 18, and the power switch 18 is attached to the back surface portion 19 of the casing 1 as shown in FIG. .

As shown in FIGS. 1 and 4, the front edge 3a of the cover 3 forming a part of the casing 1 has a front portion 5
A protective cover 20 made of trim rubber or the like is attached to the front edge 3a along the circumference thereof. The protective cover 20 is for protecting the tester and the flame sensor from being damaged when they contact each other during the operation test of the flame sensor.

An auxiliary rod mounting member 21 is provided at the bottom of the casing 1 so as to project outward. The auxiliary rod mounting member 21 is for attaching a telescopic auxiliary rod 22 as shown in FIG. 5 when performing an operation test of the flame detector. One end 2 of the auxiliary rod 22 is attached to the auxiliary rod mounting bracket 21.
2a is attached using a wing nut or a wing screw.

In this embodiment, since the infrared light source 8 and the ultraviolet light source 11 having a small size and a small amount of light are used, the dry cell 17 can be used as a battery. Therefore, the operation tester actually manufactured is The size of the casing 1 is 146 mm in length, 75 mm in width, and 76 mm in height, which is extremely small and lightweight, and can be easily carried.

Next, a method of conducting an operation test of the flame detector using the operation tester according to this embodiment will be described.
First, the auxiliary rod 22 is attached to the auxiliary rod fitting 21 of the operation tester. At this time, when the wing nut or the wing screw of the mounting portion is tightened, the angle between the casing 1 of the operation tester and the auxiliary rod 22 is fixed, and when loosened, the two become rotatable with respect to each other. Therefore, as shown in FIG. 6, the angle between the casing 1 and the auxiliary rod 22 is adjusted according to the mounting angle of the flame sensor 23 to be tested.

After the power switch 18 of the operation tester is turned on to drive the infrared light source 8 and the ultraviolet light source 11 by the first and second driving circuits, the auxiliary tester 22 holds the auxiliary tester 22 to detect the flame. Align with the container 23. For example, the front part 5 of the casing 1 of the operation tester is located within a distance of 20 cm with respect to the front of the flame detector 23. In this state, it is tested whether the flame detector performs a predetermined operation within a predetermined time, for example, 30 seconds.

Since infrared rays and ultraviolet rays for testing are simultaneously emitted from the infrared light source 8 and the ultraviolet light source 11 of the operation tester, there is one for both the infrared flame detector and the ultraviolet flame detector. The same test can be performed with the operation tester. Therefore, it is possible to efficiently perform the operation test of the flame detector without discriminating the type of the flame detector.

Further, the infrared light source 8 and the ultraviolet light source 1
If dust adheres to the surface 1, the amount of infrared rays and ultraviolet rays emitted from these light sources decreases, making it difficult to perform an accurate operation test.
Since these light sources 8 and 11 are protected from dust, dust is prevented from adhering and a highly reliable operation test can be performed.

A high voltage of about 250 to 350 V obtained by boosting the voltage of the dry battery 17 by the high voltage generating circuit 13 is applied to the ultraviolet discharge tube used as the ultraviolet light source 11, and the high voltage generating circuit 13 and the ultraviolet light are used. Since the second substrate 12 on which the light source 11 is mounted is provided separately from the first substrate 9 on which another low voltage circuit such as the first drive circuit 10 is mounted, the high voltage generation circuit 13 is provided. The high voltage generated at 1 is prevented from affecting other low voltage circuits, and the reliability of operation as an operation tester is improved.

The second substrate 12 on which the ultraviolet discharge tube is mounted, that is, the casing, is mounted so that the ultraviolet discharge tube serving as the ultraviolet light source 11 can approach the flame detector during the operation test. It is arranged just inside the front part 5 of the No. 1. Further, the second substrate 12 is fixed to the casing 1 with screws so that it can be easily replaced when the ultraviolet discharge tube fails.

Further, since the protective cover 20 made of trim rubber or the like is provided at the forefront part of the casing 1, the tip end of the operation tester is aligned with the flame tester 23 and the operation tester. Even if they come into contact with each other, both are protected by the protective cover 20. Further, as shown in FIG. 7, a protective cover 30 having a predetermined length is attached to the forefront part of the casing 1, and the tip of the protective cover 30 is brought into contact with the front of the flame detector 23 to operate. It is also possible to carry out a test. At least the tip of the protective cover 30 that abuts the flame sensor 23 is made of flexible rubber or the like. If such a protective cover 30 is used, the positional relationship between the operation tester and the flame detector 23 can be easily kept constant, and the interval between them can be always set to a predetermined value for the test. , The accuracy of the operation test is improved.

[0030]

As described above, the operation tester of the flame detector according to claim 1 of the present invention comprises an infrared light source, an ultraviolet light source, and a first drive circuit for driving the infrared light source. A second drive circuit for driving the ultraviolet light source, a battery for supplying power to the first and second drive circuits, an infrared light source, an ultraviolet light source, first and second drive circuits and a battery In addition, since the infrared window for guiding the infrared rays from the infrared light source to the outside and the casing for forming the ultraviolet window for guiding the ultraviolet rays from the ultraviolet light source to the outside are provided, the infrared type A compact and portable operation tester applicable to both the flame detector and the ultraviolet flame detector is realized, and the work efficiency of the operation test can be improved.

The operation tester of the flame detector according to claim 2 is
The operation tester according to claim 1, wherein the auxiliary rod mounting member is formed on the casing so as to project outwardly, and is attached to the auxiliary rod mounting member and for aligning and holding the casing with respect to the flame detector during an operation test. Since it is provided with the auxiliary rod, the operation test can be performed by positioning the casing in the vicinity of the flame detector installed on the ceiling surface of the room or the like.

The operation tester of the flame detector according to claim 3 comprises:
The operation tester according to claim 1 or 2, wherein the infrared window portion of the casing includes a first opening portion formed in front of the infrared light source, and a first window member covering the first opening portion.
Since the ultraviolet window includes the second opening formed in front of the ultraviolet light source and the second window member covering the second opening, the infrared light source and the ultraviolet light source inside the casing. Can be protected from dust.

The operation tester of the flame detector according to claim 4 is
The operation tester according to any one of claims 1 to 3, wherein the infrared window portion and the ultraviolet window portion are formed in a common surface of the casing, and the protective cover is provided along the circumference of the common surface. Since it is provided, even if the casing and the flame detector contact each other, both can be protected by the protective cover.

The operation tester of the flame detector according to claim 5 is
The operation tester according to any one of claims 1 to 4, wherein the second drive circuit includes a high voltage generation circuit that generates a high voltage for driving the ultraviolet light source, and the first drive circuit is mounted. And a second substrate which is mounted with an ultraviolet light source and a high voltage generation circuit and which is separated from the first substrate.
Since the first drive circuit is prevented from being affected by the ultraviolet light source and the high voltage generation circuit, the reliability of the operation of the operation tester can be improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the inside of an operation tester of a flame detector according to an embodiment of the present invention.

FIG. 2 is a front view showing the operation tester of FIG.

3 is a rear view showing the operation tester of FIG. 1. FIG.

4 is a plan view showing the operation tester of FIG. 1. FIG.

5 is a view showing an auxiliary rod attached to the operation tester of FIG. 1. FIG.

FIG. 6 is a diagram showing a state in which an operation test of a flame detector is performed using the operation tester of FIG.

FIG. 7 is a diagram showing a state in which an operation test of a flame detector is performed using an operation tester according to another embodiment.

FIG. 8 is a front view showing an operation tester for a conventional ultraviolet flame detector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Casing 2 Base part 3 Cover 4 Cover fixing screw 5 Front part 5a First opening 5b Second opening 7 Light bulb holder 8 Infrared light source 9 First substrate 10 First drive circuit 11 Ultraviolet light source 12 Second Substrate 13 High Voltage Generation Circuit 14 Film 15 Wire Mesh 16 Battery Holder 17 Dry Battery 18 Power Switch 20, 30 Protective Cover 21 Auxiliary Rod Mounting Bracket 22 Auxiliary Rod 23 Flame Detector

Claims (5)

[Claims] 1. An infrared light source for emitting infrared light, an ultraviolet light source for emitting ultraviolet light, a first drive circuit for driving the infrared light source, and a second drive circuit for driving the ultraviolet light source. And a battery for supplying power to the first and second drive circuits, an infrared light source, an ultraviolet light source, the first and second drive circuits and the battery, and the infrared light. And a casing for forming an infrared ray window portion for guiding the infrared ray emitted from the light source for the outside and an ultraviolet ray window portion for guiding the ultraviolet ray emitted from the ultraviolet light source to the outside. The flame detector operation tester. 2. An auxiliary rod mounting member formed so as to project outward from the casing, and the auxiliary rod mounting member is attached to the auxiliary rod mounting member and aligns and holds the casing with respect to a flame detector during an operation test. The operation tester according to claim 1, further comprising: 3. The infrared window of the casing has a first opening formed in front of the infrared light source and the first window.
First window member for covering the opening of the infrared light source and protecting the infrared light source from dust, and the ultraviolet window part includes a second opening formed in front of the ultraviolet light source and the second window part. The operation tester according to claim 1 or 2, further comprising: a second window member that covers the opening of the above and protects the ultraviolet light source from dust. 4. The infrared window portion and the ultraviolet window portion are formed in a common surface of the casing, and a protective cover is provided along the circumference of the common surface. Item 4. The operation tester according to any one of items 1 to 3. 5. The second drive circuit includes a high voltage generation circuit that generates a high voltage for driving the ultraviolet light source, a first substrate on which the first drive circuit is mounted, and the ultraviolet light. 5. The operation tester according to claim 1, further comprising: a light source for use with the high voltage generation circuit, and a second substrate which is separated from the first substrate. .