JP2002350244A - Smell detection type heat monitoring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a smell detection type heat monitoring system capable of expanding a use range by allowing the usage of temperature detection in an opened space at a practical level without limiting the usage in a closed space. SOLUTION: This smell detection type heat monitoring system has a smell generation component 1 composed by enclosing a smell generation substance in a barrier layer for restraining diffusion of the smell generation substance, and used for monitoring temperature by breaking the barrier layer of the smell generation component by setting the temperature to a predetermined value or above to leak the smell generation substance outside the barrier layer and thereby diffusing it into the air and by detecting its smell by a smell sensor detection part 7 installed in a smell sensor body 6. The smell generation component 1 is attached to the smell sensor body 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat monitoring system for monitoring a temperature, and more particularly, to a odor generating component for generating an odor when the temperature exceeds a predetermined temperature and an odor sensor for detecting the odor. The present invention relates to an odor detection type heat monitoring system that detects a temperature by using the same.

[0002]

2. Description of the Related Art Conventionally, as a method of monitoring the temperature of devices such as electric devices for the purpose of detecting a fire, there are a method using various thermometers and a method using a label whose color changes due to heat.

[0003] As a method for more reliably and easily detecting temperature, an apparatus for detecting temperature by using an odor detecting device (gas detecting device) to generate odor by a component that generates odor by heat is used. Kaihei 2-14785
8, JP-A-5-18831, JP-A-6-0666648
And so on. Japanese Patent Application Laid-Open Nos. Sho 59-103678 and Sho 63
-97168, JP-A-64-75284, JP-A-5-1
8831, JP-A-6-066647, JP-A-6-066
646.

[0004]

In the prior art, the odor-generating substance is wrapped in a microcapsule or a polymer sheet, and a heat-meltable composition is used for the microcapsule or the polymer sheet. The odorant was generated by melting and aerating the layer. These odor-producing components are often used to monitor abnormal temperature of the apparatus, particularly abnormal overheating of electrical equipment, and to prevent serious disasters such as fires and power outages. In the method of detecting a temperature abnormality using the odor-generating component and the odor sensor, the odor-sensor and the odor-generating component are used separately (separated).

[0005] At this time, it is necessary that the odor sensor and the odor-generating component be transmitted by the odor reliably. For example, the odor sensor and the odor-generating component are installed in the same closed room and used. There is a problem that the use is limited and the place where the odor detection type heat monitoring system can be installed is also limited.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art, and to make it possible to use not only the use in a closed space but also the temperature detection in an open space at a practical level, thereby expanding the use range of an odor detection type. It is to provide a thermal monitoring system.

[0007]

SUMMARY OF THE INVENTION The gist of the present invention is to provide an odor generating component in which an odor generating substance is hermetically sealed with a barrier layer for suppressing diffusion of the odor generating substance, and the temperature of the odor generating component is increased by a predetermined temperature or more. The barrier layer of the odor generating component is destroyed, the odor generating substance leaks out of the barrier layer and diffuses into the air, and the odor is detected by an odor sensor detector provided in the odor sensor main body, and the temperature is monitored. In the odor detection type heat monitoring system, the odor generation component is attached to the odor sensor main body.

[0008] Thus, the odor generating component functions due to the overheating temperature abnormality, and when the odor is generated, the abnormality can be reliably detected and responded to because the odor sensor detecting section is near. The odor-producing substance is preferably a combustible substance, particularly preferably ethyl alcohol or an aqueous ethyl alcohol solution that is less harmful to the human body and the environment.

Further, it is desirable that the above-mentioned odor sensor main body is provided and used in electric equipment. The odor sensor body can not only detect abnormal temperature due to the odor-producing components, but also, if the odor-producing components do not function and the electrical equipment facilities are abnormally heated, the heat of the resins used by the electrical equipment facilities It is preferable to have a function of detecting a decomposition odor and detecting an abnormality before a fire. By doing so, the safety of the present odor detection type thermal monitoring system can be made high.

[0010]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an embodiment of an odor detection type heat monitoring system according to the present invention. An odor generation component 1 shown in FIG. 2 described below is attached to the odor sensor main body 6 provided with the odor sensor detection unit 7. The odor sensor detection section 7 and the odor generating component 1 are provided outside the housing of the odor sensor main body 6 at positions exposed to air. Further, it is preferable that the odor generating component 1 is installed at a position lower than the odor sensor detecting section 7.

FIG. 2 is a view showing an embodiment of an odor generating component used in the odor detection type heat monitoring system of the present invention.

As shown in FIG.
Has a structure in which a circular odor emission port 4 is formed on the top, an odor-generating substance 3 is contained in a cylindrical container 2, and the odor emission port 4 is sealed with a lid 5 made of a low-melting metal. It has become. The container 2 and the lid 5 constitute a barrier layer. The barrier layer is not limited to this, and may be configured so that the barrier layer is broken when the temperature exceeds a predetermined temperature.

The container 2 is not particularly limited as long as it has a melting point at least equal to or higher than the melting point of the low-melting-point metal lid 5 and is not easily corroded by the contained odor-generating substance 3. Rather, it is desirable to use a metal that is relatively inexpensive and has excellent corrosion resistance so that the odor-generating substance 3 does not leak out over a long period of time, but it is an organic material such as plastic that generates a pyrolytic odor. May be.

The cover 5 for sealing the odor emission port 4 of the container 2 is preferably made of a metal having a melting point not higher than the fusing temperature of the thermal fuse, for example, in the range of 50 ° C. to 200 ° C. It is not limited, and specifically,
Metals such as lead, tin, zinc, bismuth, and indium or these metals are suitable, and a desired melting point temperature can be freely set by selecting these metals or alloying them at a predetermined ratio. . For example, indium has a melting point of about 156 ° C. and tin has a melting point of 232 ° C., but when alloyed at a ratio of 52 parts by weight of indium and 48 parts by weight of tin, a low melting point alloy having a melting point of 117 ° C. is obtained. If the temperature exceeds this temperature, such an indium-tin alloy is used for a heat-generating portion that may cause an overheating accident or a failure. When environmental pollution is taken into consideration, it is preferable to refrain from using harmful metals such as lead as much as possible.

The odor-generating substance 3 is a substance which is volatilized by overheating and can be detected by the odor sensor detection unit 7, for example, alcohols such as ethyl alcohol (ethanol), propanol, butanol and phenol, methane, butane and octane. And unsaturated hydrocarbons such as ethylene, acetylene, butadiene, benzene and naphthalene; ketones such as acetone and methyl ethyl ketone; carboxylic acids such as formic acid, acetic acid, lactic acid, acrylic acid and methacrylic acid, and acetic acid. Esters such as methyl and ethyl acetate can be used, but considering the effects on the human body, ethyl alcohol or an aqueous solution thereof or L-
Menthol is the best.

Then, the odor generating component 1 having such a configuration is fixed on the odor sensor main body 6 as shown in FIG.
When the temperature of the odor sensor body 6 rises due to the temperature rise of the surrounding environment where the odor sensor body 6 is installed,
Due to the heat, the lid 5 sealing the odor emission port 4 of the container 2 is immediately melted down and opened instantaneously, and immediately thereafter, the internal odor-generating substance 3 is scattered to the outside at a stretch. The odor-generating substance 3 diffused in the air is shown in FIG.
, The temperature of the place where the odor sensor main body 6 is installed can be monitored.

A more specific example will be described below.

0.5 g of an ethanol solution was filled through the odor emission port 4 formed in the container 2 shown in FIG. 2, and sealed with a lid 5 made of a low melting point metal having a melting point of 96 ° C. Next, as shown in FIG. 1, the odor generating component 1 is attached to the odor sensor main body 6, and the odor sensor main body 6 is connected to a switchboard (not shown).
It was installed inside the distribution panel and monitored for overheating in the switchboard. The vicinity of the odor sensor main body 6 was heated to 100 ° C. to confirm the function.

The layer of the cover 5 of the odor generating component 1 is melted, and the odor generating substance 3 leaks from the odor emission port 4, and the odor output of the odor sensor detecting section 7 provided in the odor sensor main body 6 rises, resulting in abnormal temperature. Was detected.

The odor sensor detecting section 7 preferably has a function of detecting the thermal decomposition odor of resins generally used in electric equipment, and one of the equipment parts in the switchboard. The temperature abnormality can be detected even when the resin part, which is a part, is thermally decomposed due to abnormal overheating in the switchboard and generates odor. Thereby, a highly reliable odor detection type thermal monitoring system can be provided.

[0022]

According to the present invention, not only the use in a closed space but also the temperature detection in an open space can be used at a practical level, and an odor detection type heat monitoring system with a wide range of use is provided at low cost. can do.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of an odor detection type heat monitoring system of the present invention.

FIG. 2 is a perspective view showing one embodiment of an odor-generating component used in the odor-detecting heat monitoring system of the present invention.

FIG. 3 is a partial cross-sectional view showing a state in which an odor generating component used in the odor detection heat monitoring system of the present invention is attached to an odor sensor main body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Odor generation part 2 Container 3 Odor generation substance 4 Odor emission port 5 Lid 6 Body of odor sensor 7 Odor sensor detection part

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Hiroshi Kamoshida 5-1-1, Hidaka-cho, Hitachi City, Ibaraki Prefecture F-term in the Hidaka Plant of Hitachi Cable, Ltd. (reference) 2F056 TZ00 UZ05 UZ09

Claims (4)

[Claims] 1. An odor-generating component comprising an odor-generating substance sealed with a barrier layer that suppresses diffusion of the odor-generating substance, and the barrier layer of the odor-generating component is destroyed when the temperature exceeds a predetermined temperature. The odor generating substance leaks out of the barrier layer and diffuses into the air, and the odor is detected by an odor sensor detection unit provided in the odor sensor main body,
In the odor detection heat monitoring system that monitors the temperature,
An odor detection type heat monitoring system, wherein the odor generating component is attached to the odor sensor main body. 2. The odor detection type heat monitoring system according to claim 1, wherein the odor generating substance is a combustible substance. 3. The odor detection type heat monitoring system according to claim 2, wherein said flammable substance is ethyl alcohol or an aqueous solution of ethyl alcohol. 4. The odor detection type thermal monitoring system according to claim 1, wherein the odor sensor main body is installed and used in electrical equipment.