JP3444527B2 - Gas / fire integrated alarm - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas / fire integrated alarm device, and more particularly to a gas / fire integrated alarm device capable of detecting a fire together with combustible gas such as methane-based city gas or CO. It is about.

[0002]

2. Description of the Related Art Conventionally, as a sensor for detecting gas, there are a semiconductor type and a catalytic combustion type, and there is a gas alarm device incorporating a gas detection device using them. On the other hand, as a sensor for detecting a fire, there are a photoelectric type sensor for detecting smoke, an ionization type sensor for detecting smoke, and a heat sensing type sensor for detecting temperature, and there is also a fire alarm device incorporating them. So, when trying to detect a fire with a flammable gas, in general,
These alarm devices were installed individually.

However, when an alarm device for detecting flammable gas and a fire is separately installed, the number of alarm devices to be installed increases and the number of man-hours required for installation increases, so that the total cost of equipment increases. To do. Therefore, two types of sensors that detect gas and fire separately are housed in one case (outer shell body), and when flammable gas leaks and is drifting in the open air A gas / fire detection device has been conceived, which is capable of both detecting the gas of the above and detecting it when a fire occurs. This is shown in FIG. In FIG. 3, reference numeral 3001a indicates a gas sensor portion, and reference numeral 3002a indicates a fire detection portion.

[0004]

However, by providing both the gas sensor and the fire detection sensor in one body in this way, it is possible to detect both the flammable gas and the fire. In the conventional gas / fire detection device that is capable of performing, even though the life of the entire device is not completely reached, when a part with a shorter life reaches its expiration date, only for that part, There was a problem that the entire device had to be replaced.

That is, in general, the life of the fire detection unit can be guaranteed for a long period of time unless otherwise specified, but the life of the gas sensor is generally short, about 5 years. For this reason, the gas sensor first reaches the end of its life and must be replaced, but at this time the fire sensor can continue to operate with sufficient reliability for many years. It is in a state.

Therefore, even though the fire detector is still in a state where it can be practically used, it is necessary to replace the entire device. In this case, a single part, the gas sensor, wastes most of the other parts, resulting in an extremely large waste of hardware resources, which is uneconomical and leads to an increase in industrial waste. is there.

Further, there is a problem that the cost is substantially higher than that of the conventional technique in which the gas alarm and the fire alarm are connected by wiring. By the way, in the conventional gas alarm 3001b in which the fire alarm 3002b and the gas alarm 3001b as shown in FIG. 4 are separate bodies, since the life of the gas sensor is shorter than the other parts as described above, A gas sensor (not shown) is attached to the gas alarm 3
This has been dealt with by adopting a structure in which the main body of 001b is detachably held. Note that in FIG. 4, reference numeral 3003 is a connection wiring.

However, in the replacement work of this gas sensor, there is an instrumental error (dispersion of performance) for each gas sensor.
Is inevitable, and its adjustment is necessary. That is, it is necessary to adjust the signal processing circuit and the data processing circuit of the subsequent stage according to the instrumental difference of the gas sensor main body, but it is wrapped in the outer shell body of the gas alarm device 3001b once installed and the There is a problem that replacement of the used gas sensor main body and adjustment of the electric circuit system become extremely complicated.

In order to avoid such a problem caused by the replacement of the gas sensor body, it is conceivable to discard the gas alarm device equipped with the gas sensor itself when the gas sensor replacement time comes. As in the case of the above-mentioned integrated device, there are still many parts that can be continuously used for many years, such as the power supply circuit system of the gas alarm device, so that Most of the waste is wasted, which results in a large amount of waste of hardware resources, which is uneconomical and leads to an increase in industrial waste. Further, since such a large amount of waste is generated, there is a problem that the cost is substantially increased.

The present invention has been made to solve such a problem. INDUSTRIAL APPLICABILITY The present invention can replace a gas sensor, which is a short-lived part, easily and accurately at the end of its life and at a low cost with few parts to be wasted, and at that time, various adjustments are unnecessary. An object of the present invention is to provide a gas / fire integrated alarm device that can realize downsizing and simplification of the entire device.

[0011]

[Means for Solving the Problems] First, the gas of the present invention
The integrated fire alarm system has a gas sensor that detects gas,
In a gas / fire integrated alarm device having a fire detection unit for detecting a fire, the fire detection unit includes a power supply circuit, the gas sensor unit, a gas sensor, a detection circuit,
It is characterized in that it is provided with an adjusting circuit and a judging circuit, and is detachably attached to the fire detecting section separately from the fire detecting section.

That is, when the life of the gas sensor body that has been used has reached the end, only the gas sensor section having the old gas sensor body may be removed from the fire detection section and replaced with a new gas sensor section having a new gas sensor body. it can. In addition, at this time, both the old gas sensor unit equipped with the old gas sensor and the new gas sensor unit equipped with the new gas sensor have specifications based on common specifications of the outer shell body shape, the electric circuit system, and the performance of the gas sensor body. It is extremely easy to attach / detach the gas sensor part to / from the fire detection part.
In addition, it is possible to surely perform the mounting without erroneous mounting.

Further, since the gas sensor unit includes not only the gas sensor main body but also the detection circuit, the adjustment circuit, and the judgment circuit, the gas sensor main body has reached the end of its life and is provided with the old gas sensor main body. Even if you remove the old gas sensor unit and replace it with a new gas sensor unit that has a new gas sensor unit, the matching between the instrumental difference of the gas sensor unit and the electric circuit system as in the case of the conventional gas alarm device is performed. The adjustment work to be taken can be completely omitted.

Therefore, it is possible to eliminate the above-mentioned complicated adjustment work which is conventionally required when the gas sensor unit is replaced, and it is possible to replace the gas sensor unit very easily. Moreover, at this time, the gas sensor is removed together with the gas sensor main body and disposed of, and is incinerated, or the material is reused after being disposed of once, and the use of the gas sensor is stopped in any case. Although it is a detection circuit, adjustment circuit, and determination circuit connected to, since these are generally composed of a simple electric circuit, even if the entire gas sensor section equipped with such a thing is discarded, Not too expensive.

Moreover, the gas / fire integrated alarm device according to the present invention is, as its name implies, an integrated gas / fire detection alarm device, so that it is possible to realize downsizing and simplification of the entire device. It goes without saying that it is As described above, according to the present invention, a gas sensor, which is a short-lived part compared to other parts, can be replaced easily and accurately when its life comes, and at a low cost with less wasteful parts. In addition, various adjustments are unnecessary at that time, and the size and simplification of the entire apparatus can be realized.

Secondly, in the gas / fire integrated alarm device according to the first aspect, the gas sensor part and the fire sensing part are provided to prevent erroneous mounting when the gas sensor part is mounted on the fire sensing part. It is characterized by comprising an erroneous insertion prevention unit that uniquely determines a relative positional relationship with the fire detection unit.

That is, the erroneous insertion prevention unit prevents the gas sensor unit and the fire detection unit from being erroneously attached when the gas sensor unit is attached to the fire detection unit. It can be easily installed. Thirdly, in the gas / fire integrated alarm device according to the first or second aspect, the gas sensor unit and the fire detection unit are mounted at predetermined fixed positions,
The outer shell body of the fire detector has a recess,
The outer shell body of the gas sensor unit is characterized in that the outer shell body itself has a shape fitted into the recess.

That is, the outer shell body of the fire sensing portion is formed with a recess, and the outer shell body of the gas sensor portion has a shape itself that fits into the recess. Since the gas sensor unit and the fire detection unit can prevent erroneous mounting when the gas sensor unit is mounted on the fire detection unit, more accurate and reliable mounting can be easily performed.

Fourthly, in the gas / fire integrated alarm device according to the second aspect, the erroneous insertion prevention part is formed on the outer shell body of the gas sensor part and the outer shell body of the fire sensing part. It is characterized in that it is an erroneous insertion prevention portion formed in a fitting structure for fitting.

That is, by forming the erroneous insertion prevention portion into a fitting structure in which the concavities and convexities fit when the gas sensor portion and the fire detection portion are mounted at predetermined predetermined positions, the gas sensor The unit and the fire detection unit can prevent erroneous attachment when the gas sensor unit is attached to the fire detection unit, and therefore can be attached more accurately and reliably easily.

Fifthly, in the gas / fire integrated alarm device according to any one of the first to fourth aspects, the gas sensor unit is attached to the fire detecting unit from the power supply circuit of the fire detecting unit. It is characterized in that it is connected so as to be supplied with a power supply voltage. That is, the gas sensor unit,
Even if it does not have a power supply circuit for supplying a power supply voltage inside, it is connected so that the power supply voltage is supplied from the power supply circuit of the fire detection part when it is attached to the fire detection part. Since it can be operated by utilizing, the internal structure of the gas sensor unit can be simplified. As a result, it is possible to further reduce waste generated when the gas sensor unit is discarded.

Sixthly, in the gas / fire integrated alarm device according to the fifth aspect, the gas sensor section is attached to the fire detecting section, and is attached to a contact provided on the fire detecting section. It is characterized in that it is provided with an electrically connected contact and is connected so that a power supply voltage is supplied from the power supply circuit of the fire detection unit.

That is, even if the gas sensor unit does not have a power supply circuit for supplying a power supply voltage therein, the gas sensor unit is supplied with the power supply voltage from the power supply circuit of the fire detection unit while being attached to the fire detection unit. As described above, it is possible to operate by using the power supply voltage connected by the contact, so that the internal configuration of the gas sensor unit can be simplified. As a result, it is possible to further reduce waste generated when the gas sensor unit is discarded.

Seventhly, in the gas / fire integrated alarm device according to the sixth aspect, the contact point of the gas sensor unit is mechanically attached to the fire detection unit in a state where the gas sensor unit is attached to the fire detection unit. It is also characterized in that it is also used as a locking member that locks by frictional force.

That is, the contact can be used not only as an electrical connection but also as a locking member for locking the gas sensor section to the fire detection section mechanically or by frictional force. Moreover, the state in which the gas sensor unit is attached to the fire detection unit can be maintained.

Eighthly, in the gas / fire integrated alarm device according to any one of the first to seventh aspects, the outer shell body of the fire detection portion is an insertion hole which is mounted in a state where the gas sensor portion is housed. Alternatively, it is characterized in that an insertion recess is formed. That is, the gas sensor unit is installed in the insertion hole or the insertion recess of the fire detecting unit so as to be buried in the outer shell body of the fire detecting unit, so that the gas sensor unit is attached to the fire detecting unit. Since the gas sensor part can be prevented from protruding outside of the fire detection part in the mounted state, downsizing and simplification of the entire device (making it a plain shape without protrusions or catches) Moreover, it is possible to further secure the attachment of the gas sensor portion to the fire detection portion.

Ninth, the gas / fire integrated alarm device according to any one of the first to eighth aspects is characterized in that the outer shell body of the gas sensor portion is a cylindrical outer shell body. . That is, in general, a spherical or cylindrical shape has a smaller outer surface area with respect to the same inner volume than a rectangular parallelepiped, so that the outer shell body of the gas sensor portion, which is often discarded, is formed into a cylindrical shape. The amount of waste resources when detaching and discarding can be further reduced, and moreover, the volume required as the outer shell body of the gas sensor portion can be secured.

[0028] Tenth, in the gas / fire integrated alarm device according to any one of the above first to ninth, the outer shell body of the fire sensing portion is an outer shell body formed in a rectangular parallelepiped. That is, the outer shell body of the fire alarm itself is formed in a rectangular parallelepiped. And, unlike the gas sensor section provided with the gas sensor, this fire alarm generally has a long service life that enables continuous use for many years. And in the technology according to the present invention,
The fire detector has almost all the functions of a general fire alarm. Therefore, when replacing the gas sensor part, the outer shell body of the fire alarm, that is, the fire sensor is a rectangular parallelepiped so that the gas sensor part and the fire alarm (that is, the fire sensor) can be easily and intuitively distinguished from each other. Is preferred.

Eleventh, in the gas / fire integrated alarm device according to any one of the first to tenth aspects, at least the outer shell body of the gas sensor unit is removed from the fire detection unit and discarded. It is characterized by being made of a reusable material or a material that does not emit a harmful substance that is certified as harmful to the environment even when it is incinerated.

That is, at least the outer shell body of the gas sensor unit is a reusable material when it is removed from the fire detection unit and disposed of, or is recognized as harmful to the environment even if it is incinerated. By using a material that does not emit harmful substances, it can be reused and effectively reuse limited resources at the time of disposal of the gas sensor part that is exchanged relatively more frequently than other parts. Moreover, it is possible to obtain an advantage that the generation of harmful substances to the environment can be suppressed.

Needless to say, the gas sensor part after removal is not limited to discarding. For example, when the gas sensor body reaches the end of its life, the gas sensor unit equipped with the gas sensor unit is once removed and brought to a reprocessing plant, and the old gas sensor unit is replaced with a new gas sensor unit, and the gas sensor unit equipped with The detection circuit, the adjustment circuit, and the determination circuit may be adjusted for the instrumental error of the newly attached gas sensor body and then reused.

At this time, according to the present invention, the gas sensor unit is provided with the detection circuit, the adjustment circuit, and the determination circuit as described above together with the gas sensor main body, so that the gas sensor unit as well as the reprocessing plant. There is also an advantage that it is possible to carry out sufficient adjustment in an environment in which equipment dedicated to adjustment is prepared.

[0033]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a gas / fire integrated alarm device according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram showing a main part of its appearance, and FIG. 2 is a diagram showing a main part of its electric circuit configuration.

As shown in FIG. 1, the gas / fire integrated alarm device is a gas / fire integrated alarm device having a gas sensor unit 100 for detecting a gas and a fire detecting unit 200 for detecting a fire. The fire detection unit is a power supply circuit 400.
(FIG. 2), the gas sensor unit 100 includes a gas sensor 101 and a detection circuit 102 as shown in FIG.
The fire detection unit 200 is equipped with an adjustment circuit 103, a determination circuit 104, and a voltage control circuit 105, and can be attached to and detached from the fire detection unit 200 separately from the fire detection unit 200. It can be removed from the fire detection unit 200 and replaced with a new gas sensor unit 100 having a new gas sensor 101.

Moreover, at this time, the old gas sensor 1 is used.
01 and the new gas sensor unit 100 including the new gas sensor 101, both the shape of the outer shell body, the electric circuit system, and the gas sensor 101.
Since the performance of the gas sensor unit 100 is unified by the specifications based on the common specifications,
The attachment / detachment to / from can be performed very easily and accurately and reliably without erroneous attachment.

The gas sensor section 100 includes not only the gas sensor 101 main body but also the detection circuit 102 and the adjustment circuit 1.
03, the determination circuit 104, and the voltage control circuit 105 are provided, the old gas sensor unit 100 having the old gas sensor 101 main body that has reached the end of its life is removed, and the new gas sensor 101 main unit is provided. Even if it is replaced with a new gas sensor unit 100, the gas sensor 1 as in the case of the conventional gas alarm device
01 The adjustment work for obtaining the matching between the instrumental error of the main body and the electric circuit system can be completely omitted.

Therefore, since the complicated adjustment work conventionally required when replacing the gas sensor unit 100 can be eliminated, the replacement of the gas sensor unit 100 can be made extremely simple. Moreover, at this time, the gas sensor unit 1
00 is removed together with the main body of the gas sensor 101 and disposed of, and is incinerated or once discarded, the material is reused because the detection circuit 102, the adjustment circuit 103, and the determination circuit 104 connected to the gas sensor 101. The voltage control circuit 105, which is clear from FIG. 2 and is generally composed of a simple electric circuit, is substantially disposed even if the entire gas sensor unit 100 including such a circuit is discarded. Is not very expensive. Moreover, since the gas / fire integrated alarm device according to the present invention is an integrated gas / fire detection alarm device as its name suggests, it is possible to realize downsizing and simplification of the entire device. Needless to say.

As described above, the gas sensor 101, which is a short-lived portion as compared with other portions, can be replaced easily at the end of its life and at a low cost with less wasteful portions. Further, at that time, various adjustments are not required, and the size and simplification of the entire apparatus can be realized.

Furthermore, in the gas sensor section 100 and the fire detection section 200, the gas sensor section 100 is the fire detection section 20.
In order to prevent erroneous installation when it is installed in 0, the fire detection unit 2
Erroneous insertion prevention units 301 and 302 that uniquely determine the relative positional relationship with 00.

More specifically, the gas sensor unit 100 and the fire detection unit 200 are connected to the fire detection unit 200 to prevent erroneous mounting when the gas sensor unit 100 is mounted on the fire detection unit 200. The erroneous insertion prevention unit 30 for uniquely determining the relative positional relationship of the
The erroneous insertion preventing portions 301, 302 are formed by fitting structures in which the outer shell body of the gas sensor unit 100 and the outer shell body of the fire detecting unit 200 are fitted to each other. Is.

The gas sensor unit 100 is attached to the fire detection unit 200 so that the power supply voltage is supplied from the power supply circuit 400 of the fire detection unit 200.
It is connected to the power supply circuit 400 of the fire detection unit 200. In addition, a recess is formed in the outer shell body of the fire detection unit 200 so that the gas sensor unit 100 and the fire detection unit 200 are mounted at predetermined fixed positions, and the outer shell of the gas sensor unit 100 is also formed. The body is formed in such a shape that the outer shell body itself fits into the recess.

Moreover, the gas sensor portion 100 and the fire detection portion 2 which are shaped so as to be fitted into the concave portion and the concave portion.
More specifically, the outer shell body of No. 00 has a cylindrical outer shell body of the gas sensor unit 100, and the outer shell body of the fire detection unit 200 has a rectangular parallelepiped outer shell body. It is a shell body.

More specifically, the gas sensor section 100
Includes a contact 401 that is electrically connected to a contact provided on the fire detection unit 200 when mounted on the fire detection unit 200, and the power supply circuit 400 of the fire detection unit 200. It is connected so that the power supply voltage is supplied from.

Moreover, the contact is also used as a locking member for locking the gas sensor part to the fire detecting part mechanically or by frictional force in a state where the gas sensor part is attached to the fire detecting part. At least the outer shell body of the gas sensor unit 100 has the fire detection unit 20.
It is made of a material that can be reused when it is removed from 0 and disposed of, or a material that does not emit a harmful substance that is certified as harmful to the environment even if it is incinerated.

Further, since the electric circuit housed in the gas sensor section 100 has the simple structure as described above, the printed wiring board that substantially constructs this electric circuit is not a glass epoxy substrate. Since a substrate made of paper-like material can be used favorably, there is no need to use a glass epoxy substrate that contains many harmful substances that are certified as harmful to the environment during the disposal process, and On the other hand, it is possible to preferably use a paper substrate that does not emit a harmful substance that is recognized as harmful and that is easy to dispose of a material.

[0046]

EFFECTS OF THE INVENTION According to the present invention, firstly, when the life of the gas sensor body that has been used so far is reached, only the gas sensor portion having the old gas sensor body is removed from the fire detection portion, and a new gas sensor body is provided. It can be replaced with a new gas sensor unit equipped with.

At this time, both the old gas sensor unit having the old gas sensor and the new gas sensor unit having the new gas sensor have the same specifications of the outer shell body shape, the electric circuit system, and the performance of the gas sensor body. Since it is integrally formed based on the specifications based on the specifications, the gas sensor unit can be attached / detached to / from the fire detection unit very easily and reliably without being erroneously attached.

Further, since the gas sensor unit includes not only the gas sensor main body but also the detection circuit, the adjustment circuit, and the determination circuit, the gas sensor main body has reached the end of its life and is provided with the old gas sensor main body. Even if you remove the old gas sensor unit and replace it with a new gas sensor unit that has a new gas sensor unit, the matching between the instrumental difference of the gas sensor unit and the electric circuit system as in the case of the conventional gas alarm device is performed. The adjustment work to be taken can be completely omitted.

Therefore, it is possible to eliminate the above-mentioned complicated adjustment work which is conventionally required when the gas sensor unit is replaced, and the gas sensor unit can be replaced very easily. Moreover, at this time, the gas sensor is removed together with the gas sensor main body and disposed of, and is incinerated, or the material is reused after being disposed of once, and the use of the gas sensor is stopped in any case. Although it is a detection circuit, adjustment circuit, and determination circuit connected to, since these are generally composed of a simple electric circuit, even if the entire gas sensor section equipped with such a thing is discarded, Not too expensive.

Moreover, since the gas / fire integrated alarm device according to the present invention is, as its name implies, an integrated gas / fire detection alarm device, it is possible to realize miniaturization and simplification of the entire device. It goes without saying that it is As described above, according to the present invention, a gas sensor, which is a short-lived part compared to other parts, can be replaced easily and accurately when its life comes, and at a low cost with less wasteful parts. In addition, various adjustments are unnecessary at that time, and the size and simplification of the entire apparatus can be realized.

Secondly, the erroneous insertion prevention unit can prevent the gas sensor unit and the fire detection unit from being erroneously attached when the gas sensor unit is attached to the fire detection unit. With this, reliable mounting can be easily performed. Thirdly, a recess is formed in the outer shell body of the fire detection unit, and the outer shell body of the gas sensor unit has a shape itself that fits into the recess, Since the gas sensor unit and the fire detection unit can prevent erroneous mounting when the gas sensor unit is mounted on the fire detection unit, more accurate and reliable mounting can be easily performed.

Fourthly, by forming the erroneous insertion preventing portion into a fitting structure in which unevenness fits when the gas sensor portion and the fire detecting portion are mounted at predetermined fixed positions, The gas sensor unit and the fire detection unit,
When the gas sensor unit is attached to the fire detection unit,
Since erroneous mounting can be prevented, more accurate and reliable mounting can be easily performed.

Fifth, even if the gas sensor unit does not have a power supply circuit for supplying a power supply voltage therein, the gas sensor unit does not supply the power supply voltage from the power supply circuit of the fire detection unit while being attached to the fire detection unit. Since it is connected so as to be supplied and can be operated by utilizing its power supply voltage, the internal configuration of the gas sensor unit can be simplified.
As a result, it is possible to further reduce waste generated when the gas sensor unit is discarded.

Sixth, even if the gas sensor unit does not have a power supply circuit for supplying a power supply voltage therein, the gas sensor unit does not supply a power supply voltage from the power supply circuit of the fire detection unit when mounted on the fire detection unit. As supplied, it can be connected by the above-mentioned contacts and can be operated by using the power supply voltage thereof, so that the internal structure of the gas sensor unit can be simplified. As a result, it is possible to further reduce waste generated when the gas sensor unit is discarded.

Seventhly, the contact can be used not only as an electrical connection but also as a locking member for locking the gas sensor section to the fire sensing section mechanically or by frictional force. Further, the state in which the gas sensor unit is attached to the fire detection unit can be reliably maintained.

Eighth, the gas sensor unit is mounted in such a manner that the gas sensor unit is housed in the insertion hole or the insertion recess of the fire detection unit so as to be buried in the outer shell body of the fire detection unit. Since the gas sensor unit can be prevented from protruding outside the fire detecting unit when mounted on the fire detecting unit, the overall size of the device can be reduced and the shape can be simplified (there is no protrusion or catching). It is possible to further secure the attachment of the gas sensor part to the fire detection part by making it into a plain shape).

Ninth, in general, a spherical or cylindrical shape requires a smaller outer surface area for the same inner volume than a rectangular parallelepiped, so that the outer shell body of the gas sensor portion that is often discarded is formed into a cylindrical shape. As a result, the amount of waste resources when removing and discarding it can be further reduced, and moreover, the volume required as the outer shell body of the gas sensor portion can be secured.

Tenth, the outer shell body of the fire alarm itself is formed in a rectangular parallelepiped. And, unlike the gas sensor section provided with the gas sensor, this fire alarm generally has a long service life that enables continuous use for many years. And in the technology according to the present invention,
The fire detector has almost all the functions of a general fire alarm. Therefore, when replacing the gas sensor part, the outer shell body of the fire alarm, that is, the fire sensor is a rectangular parallelepiped so that the gas sensor part and the fire alarm (that is, the fire sensor) can be easily and intuitively distinguished from each other. Is preferred.

Eleventh, at least the outer shell body of the gas sensor portion is a reusable material when it is discarded or a material that does not emit a harmful substance that is certified as harmful to the environment even if it is incinerated. By using the
When the gas sensor unit is disposed of, it is possible to obtain an advantage that it can be reused to effectively reuse limited resources and that generation of harmful substances to the environment can be suppressed.

[Brief description of drawings]

FIG. 1 is a diagram showing a main part of an external appearance of a gas / fire integrated alarm device according to the present invention.

FIG. 2 is a diagram showing a main part of an electric circuit configuration of a gas / fire integrated alarm device according to the present invention.

FIG. 3 is a diagram showing a configuration of a main part of a conventional gas / fire detection device.

FIG. 4 is a diagram showing a configuration of a main part of a conventional gas alarm device, a fire detection device, and their connection.

[Explanation of symbols]

100 gas sensor section 101 gas sensor 102 detection circuit 103 adjustment circuit 104 Judgment circuit 200 Fire detector

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G08B 17/00 G01N 27/12 G01N 27/16 G08B 21/16

Claims (11)

(57) [Claims] 1. A gas / fire integrated alarm device having a gas sensor section for detecting gas and a fire detection section for detecting fire, wherein the fire detection section includes a power supply circuit, and the gas sensor section is a gas sensor. And a detection circuit, an adjustment circuit, and a determination circuit, and is formed separately from the fire detection unit and detachable from the fire detection unit. Alarm. 2. The gas / fire integrated alarm device according to claim 1, wherein the gas sensor unit and the fire detection unit prevent the erroneous attachment when the gas sensor unit is attached to the fire detection unit. A gas / fire integrated alarm device comprising an erroneous insertion prevention unit that uniquely determines a relative positional relationship with a sensing unit. 3. The integrated gas / fire alarm device according to claim 1, wherein the gas sensor unit and the fire sensor unit are mounted outside the fire sensor unit so that the gas sensor unit and the fire sensor unit are mounted at predetermined predetermined positions. The gas / fire integrated alarm device, wherein the shell body is formed with a recess, and the outer shell body of the gas sensor portion has a shape in which the outer shell body itself is fitted into the recess. 4. The gas / fire integrated alarm device according to claim 2, wherein the erroneous insertion prevention portion is formed by fitting irregularities formed on an outer shell body of the gas sensor unit and an outer shell body of the fire detection unit, respectively. A gas / fire integrated alarm device characterized by an erroneous insertion prevention part formed in a mating structure. 5. The gas according to any one of claims 1 to 4.
In the fire-integrated alarm device, the gas sensor unit is connected to the fire detection unit so that a power supply voltage is supplied from the power supply circuit of the fire detection unit when attached to the fire detection unit. Integrated alarm device. 6. The integrated gas / fire alarm device according to claim 5, wherein the gas sensor section is electrically attached to a contact provided in the fire detection section in a state of being attached to the fire detection section. A gas / fire integrated alarm device, comprising: a contact point connected to the power source circuit of the fire detection unit so as to be supplied with a power source voltage from the power source circuit. 7. The integrated gas / fire alarm device according to claim 6, wherein the contact is mechanically or frictionally applied to the fire detection unit in a state where the gas sensor unit is attached to the fire detection unit. An integrated gas / fire alarm that is also used as a locking member that locks by force. 8. The gas according to any one of claims 1 to 7.
In the fire-integrated alarm device, the outer shell body of the fire detection unit is formed with an insertion hole or an insertion recess to be mounted in a state where the gas sensor unit is housed. vessel. 9. The gas according to any one of claims 1 to 8.
The integrated fire / fire alarm device, wherein the outer shell body of the gas sensor part is a cylindrical outer shell body. 10. The gas / fire integrated alarm device according to claim 1, wherein the outer shell body of the fire sensing portion is an outer shell body formed in a rectangular parallelepiped. Fire integrated alarm. 11. The gas / fire integrated alarm device according to claim 1, wherein at least an outer shell body of the gas sensor unit is reused when it is removed from the fire detection unit and discarded. A gas / fire integrated alarm device characterized by being made of a material that does not emit harmful substances that are certified as harmful to the environment even if it is incinerated.