JPH07200980A - CO gas alarm inspection method and CO gas generation product used in the method - Google Patents

Abstract

(57) [Summary] [Object] The present invention accurately operates a CO gas alarm device.
Inspect safely and easily. [Structure] A molded article of fibers containing cellulose as a main component,
By incomplete combustion, the smoke produced is brought into contact with the gas sensor, and the CO gas alarm is sounded, whereby the C
Configuration of the method for checking the operation of the O gas alarm.

Description

Detailed Description of the Invention

[0001]

[Industrial application] In recent years, the number of shops dealing with open flames has increased in places close to airtight, where many people gather, such as underground malls. , by the exhaust gas such as _{H 2, CO 2, H 2} O, accidents such as poisoning due to incomplete combustion of the bathtub and water heater is frequent in contaminated or general household atmosphere. Along with this, the need for effective accident prevention measures has been announced. The present invention constantly and normally maintains the operation of the CO gas alarm device installed in such a place. Therefore, a method of easily, safely and easily inspecting the CO gas alarm device and a CO gas used in the method are provided. It relates to the generated products.

[0002]

2. Description of the Related Art As a conventional method for checking the operation of this type of CO gas alarm device, when accuracy is required, a gas adjusted to an appropriate concentration is packed in a gas bag, a part of the gas is taken out, and CO There was a way to spray the gas alarm. Also, as a simple inspection, spray the smoke of the cigarette contained in the mouth, or let the smoke rising from the lit incense stick around the gas sensor installed inside the gas alarm,
The resistance value of the semiconductor gas sensor is changed, the change is taken out to an external electric circuit, and an alarm device is operated to check whether or not the CO gas detection operation is possible.

Further, a "quantitative CO gas generator" disclosed in Japanese Patent Laid-Open No. 58-55321 discloses heating a mixture of sulfate (BaSO ₄ ) or the like and activated carbon to generate a small amount of CO gas. Although the CO concentration is relatively constant, the generation mechanism is a solid-phase reaction, and only local reaction occurs, which is not suitable for continuous generation. Also,
The biggest difficulty is that the device is expensive.

The invention of the "CO gas generator for inspection" disclosed in Japanese Utility Model Laid-Open No. 58-51395 is the first chloride.
CO gas is dissolved in a copper solution, the solution is held by an adsorbent, and the CO gas released in the space is passed through a filter material and ejected from a discharge port. It is not suitable for long-term use because there are few gas leaks from the lid of the container.

[0005]

Therefore, in the conventional inspection of this type of CO gas alarm device, since the CO gas generation method, tools, and members are not constant, the state of generation of the inspection CO gas is always constant. There is a problem that it is not possible to maintain uniformity for a certain period of time, operation is uncertain, reproducibility cannot always hold significance, the skill of the practitioner is required, and it is not always sufficient. It was

Therefore, the present invention uses such a conventional CO
In order to solve the problems of the inspection method for gas alarms, CO gas for detection is generated by a gas generator that is easily available and has stable materials, and a simple device that uses a heat source. The present invention aims to provide a simple method for inspecting a CO gas alarm device and a CO gas generation product used in the method.

[0007]

The structure of the present invention for achieving the object will be described with reference to FIG. 1 corresponding to an embodiment. The present invention is based on a molded article 3 of a fiber containing cellulose as a main component. Is incompletely combusted by flameless combustion, and the generated smoke 3a is brought into contact with the gas sensor 2, and the CO gas alarm device 1
The CO gas alarm device 1 is inspected by activating the alarm unit 4 of.

In the present invention, as a molded product 3 of a fiber containing cellulose as a main component which is directly used for carrying out the method of the present invention, a CO composed of a molded product of dried plant fiber is used.
CO gas consisting of a gas generation product and a molded product of fibers obtained by impregnating a bundle of plant fibers with oxalic acid or formic acid or a salt thereof, or CO gas consisting of a product of fibrillated fibers mainly containing plant fibers. The target is generated products.

[0009]

According to the method of inspecting the CO gas alarm device 1 of the present invention, the CO gas generating member 3 having such a structure is used to generate smoke by the heat of burning in a flameless state. The gas generating member 3, which is easy and stable in material, is ignited to burn flamelessly to generate CO gas. Then, the smoke 3a containing the generated CO gas is brought into contact with the gas sensor 2 of the CO gas alarm device 1 to cause the alarm unit 4 of the CO gas alarm device 1.
Can be sounded.

As a result, the generation of smoke is always kept constant during the measurement time, which is not only convenient and reliable and easy to detect, but also its accuracy can be improved. As the molded article 3 of the fiber containing cellulose as the main component, which is directly used for carrying out the present invention, a CO gas generating product made of a dried molded article of plant fiber, and oxalic acid or formic acid or a salt thereof is added to the plant fiber. C consisting of a molded product of impregnated fibers
The CO gas generation product, which is an O gas generation product or a product obtained by fibrillating fibers whose main component is a vegetable fiber, sufficiently and surely generates the CO gas necessary for inspection even in an extremely small amount.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, FIG. 1 is a view showing an embodiment of the present invention, in which a CO gas alarm is provided with a molded article of a fiber containing cellulose as a main component, and a CO gas generation product is attached to a combustion tool. Is shown. In the case of such a CO gas alarm device 1, the gas sensor 2 normally uses a semiconductor gas detection element, and CO gas is detected at around 100 ° C. Therefore, at intervals of several tens of seconds, high temperature (300 to 400
The temperature of the gas detection element is heat-cleaned, and the temperature is again lowered to detect CO gas.

Further, recently, one hot wire type semiconductor type detecting element is heated to 400 to 450 ° C. to detect methane gas, and 2
An alarm device has been developed to detect the total amount of CO gas and H ₂ gas generated together with CO gas at 50 to 300 ° C. In this case, methane gas for 5 seconds and then 5
CO gas is detected for a second. Therefore, in any of the above methods, the detection of CO gas is repeated every 30 to 120 seconds, so the generation of CO gas for inspection is continuously 1 to
Must continue for 2 minutes. Further, this CO gas detection may be performed by a housewife who is not skilled in operation at ordinary homes, and therefore conditions that must be easy to operate, safe, and surely inspected are necessary.

The measurement operation will be described. A molded article 3 of a fiber containing cellulose as a main component is usually taken in a size of about 0.1 gram, for example, 5 mmφ and a height of 10 mm.
It is installed in the vicinity of the outside of the intake port 1a of the CO gas alarm device 1 and is ignited to cause incomplete combustion in a flameless state, and the smoke 3a generated and rising is inhaled by the CO gas alarm device 1 described above. Smoke the outside of the mouth 1a to remove a part of the smoke 3a from CO
The gas alarm device 1 is allowed to enter the interior through the intake port 1a, and CO
By bringing the gas sensor 2 in the gas alarm device 1 into contact with the gas sensor 2 and causing the alarm section 4 of the CO gas alarm device 1 to ring by the change in the electrical output thereof to operate the CO gas alarm device 1, This is a method of checking whether or not it is working.

Then, as a molded product (CO gas generating member) 3 of a fiber containing cellulose as a main component, a molded product of dried plant fiber (cellulos) such as Mogusa is taken for one cottage and inspected. The CO gas alarm 1 is placed on the combustion table 5a of the combustor 5 which is attached to the inlet 1a of the CO gas alarm 1 so that the window 5c is oppositely attached to the CO gas alarm 1. To burn. Then, the smoke 3a generated from the burning portion of the CO gas generating member 3 and rising up is referred to as the above-mentioned C
Smoke the outside of the intake port 1a of the O gas alarm device 1 and raise the smoke 3a along the outer wall of the CO gas alarm device 1,
A part of the CO gas alarm 1 is made to enter the inside through the inlet 1a.

The gas sensor 2 of the CO gas alarm device 1
To check whether or not the CO gas alarm device 1 can be operated by operating the CO gas alarm device 1 by causing the alarm unit 4 of the CO gas alarm device 1 to ring by changing its electric output. Is. When the smoke guide plate 5b is formed in an eaves-like shape on the upper part of the combustion tool 5 and arranged, the generated smoke (CO gas) is efficiently detected from the inlet 1a of the CO gas alarm device 1. The efficiency of contact with the gas sensor 2 can be improved by penetrating the interior of the room.

As a source of CO gas due to incomplete combustion in a flameless state of a molded article (CO gas generating member) 3 containing cellulose as a main component, oxalic acid or formic acid or salts thereof are contained in a bundle of plant fibers. It is also possible to use a member impregnated with. In addition, compression-molded cotton, thinly wound cotton, wound cotton with a flammable thread as the core, and wrapped the outside with paper, and the above-mentioned mogusa instead of the above-mentioned cotton Those using fibrillated plant fibers such as the above are effective without disappearing.

Further, the combustion table 5a of the combustion tool 5 is provided with a recess 5d for accommodating and mounting the molded product (CO gas generating member) 3 of the fiber containing cellulose as a main component, and heating a heater or the like from the lower surface. The smoke generating member 3 may be indirectly heated by the member 6. Figure 2 shows the elapsed time and CO due to various generating members.
The measurement result of the relationship with the output of the gas sensor is shown. In FIG. 2, (a) is 5 mmφ, 10 mm high fibrillated fiber molded product with smoke guide plate, (b) is 5 mmφ, 1
When there is no smoke guide plate for the fibrillated fiber molding of 0 mm height, (c) is 5 mmφ, when there is no smoke guide plate for the fibrillated fiber molding of 5 mm height, (d) is cotton. The case where there is no smoke guide plate of 5 mmφ and 10 mm height wrapped with paper, and (e) the case of no smoke guide plate with 5 mmφ and 10 mm height which is wrapped with paper are respectively shown.

Although the embodiments considered to be representative of the present invention have been described above, the present invention is not necessarily limited to the structures of these embodiments, and has the above-mentioned constitutional requirements referred to in the present invention, and The present invention can be carried out by appropriately modifying it within a range that achieves the object of the present invention and has the following effects.

[0019]

As is apparent from the above description, the present invention is designed so that the member of the smoke source generates smoke by the heat of burning in a flameless state. It has a remarkable effect that the generation can be kept constant during the measurement time, which is reliable and can be easily inspected, which cannot be expected from the conventional one.

Further, according to the present invention, the member 3 of the smoke source is
By using a molded product containing cellulose fibers as a main component as a raw material, and using a raw material that is readily available at hand, and incompletely burning it in a flameless state, smoke is generated. Therefore, very cheaply,
Since it can be carried out safely and hygienically, the effect of being able to carry out a simple inspection of the CO gas alarm immediately by the hands of housewives of households unfamiliar with such experiments in general households throughout the country is also included. I was able to expect it.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional perspective view showing an embodiment of the present invention.

FIG. 2 is a diagram showing a measurement result of a relationship between an elapsed time and an output of a CO gas sensor by various generation members.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CO gas alarm device 1a Inlet port 2 Gas sensor 3 Molded product of fiber mainly composed of cellulose 3a Smoke 4 Alarm part 5 Combustion tool 5a Combustion table 5b Eaves-like smoke induction plate 5c Window 5d Recess 6 Heating member 7 Gas detection Room

Claims (4)

[Claims] Claim: What is claimed is: 1. A CO gas alarm is actuated by contacting a gas sensor with smoke produced by incomplete combustion of a molded article of a fiber containing cellulose as a main component to cause the CO gas alarm to ring. How to inspect. 2. A CO gas generating product comprising a molded product of fibers containing dried plant fibers as a main component. 3. A CO gas generating product, which is a molded product of fibers obtained by impregnating oxalic acid, formic acid or salts thereof with fibers containing vegetable fibers as a main component. 4. A CO gas generating product comprising a product obtained by fibrillating a fiber containing a vegetable fiber as a main component and molding it.