JPH06223286A - Gas leakage alarming device - Google Patents

Abstract

PURPOSE:To save power consumption and to miniaturize a device by supplying power from a power source device to an alarm generation means and simultaneously cutting off power supply from the power source device to a gas leakage detection means when gas leakage is detected. CONSTITUTION:When the gas leakage is detected by the gas leakage detection means 1, by commands from a control means 5 to first and second constant voltage circuits 6d and 6e based on information from the gas leakage detection means 1, the power is supplied from the power source device 6 to a voice alarming means 2. Simultaneously, a first state for cutting off the power supply from the power source device 6 to the gas leakage detection means 1 and a second state for supplying the power from the power source device 6 to the gas leakage detection means 1 and also cutting off the power supply to the voice alarming means 2 are alternately repeated. In this case, the maximum suppling power is made to decrease by becoming a single consumed power of either the gas leakage detection means 1 or the voice alarming means 2 and is reduced. At this time, for instance, the first state is set for approximately 10 seconds and the second state is set for approximately 4 seconds and an alarming function is fully displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas leak detecting means for detecting the presence or absence of a gas leak, an alarm sound generating means for emitting an alarm sound when a gas leak is detected based on information from the gas leak detecting means, The present invention relates to a gas leak alarm unit provided with a control unit for setting the operation timing of the gas leak detection unit and the alarm sound generation unit, and a power supply device for the gas leak detection unit, the alarm sound generation unit and the control unit.

[0002]

2. Description of the Related Art Conventionally, in order to set the operation timing of a gas leak detecting means and an alarm sound generating means by a control means, a gas leak is detected by continuously supplying power to the gas leak detecting means as shown in FIG. After the gas leak is detected, the power supply to the alarm sound generating means is continued or the intermittent power supply to the gas leak detecting means is continued as shown in FIG. Whether or not to continue supplying power to the sound generating means.

[0003]

However, in any of the conventional techniques, since the electric power is supplied to both the gas leak detecting means and the alarm sound generating means at the same time after the gas leak is detected, the maximum supply power is large. When the power supply device is an AC type, the transformer becomes large, and there is room for improvement in terms of downsizing the gas leak alarm. Further, when the power supply device is a battery type, there is room for improvement in terms of power consumption reduction. An object of the present invention is to provide a gas leak alarm which is advantageous in terms of power consumption reduction and size reduction by sufficiently reducing the maximum supply power.

[0004]

The first aspect of the present invention is characterized by a gas leak detecting means for detecting the presence or absence of gas leak, and an alarm sound when a gas leak is detected based on information from the gas leak detecting means. Alarm sound generating means, a gas leak detecting means, a control means for setting the operation timing of the alarm sound generating means, and a gas leak alarm device provided with a power supply device for the gas leak detecting means, the alarm sound generating means and the control means. In the above, the control means is such that when a gas leak is detected by the gas leak detecting means, power is supplied from the power supply device to the alarm sound generating means and at the same time, power supply from the power supply device to the gas leak detecting means is cut off. It is in.

[0005]

That is, as shown in FIG. 2, when a gas leak is detected, power supply to the alarm sound generating means is started and the power supply to the gas leak detecting means is cut off. It is possible to reduce the power consumption by using either the detection means or the alarm sound generation means independently, and it is possible to sufficiently reduce the maximum supply power compared to the above-mentioned conventional technology, and to provide a gas leak alarm that is advantageous in terms of power consumption reduction and size reduction. it can.

[0006]

A characteristic configuration of the second invention is that a gas leak detecting means for detecting the presence or absence of gas leak, and an alarm sound when a gas leak is detected based on information from the gas leak detecting means. Alarm sound generating means, a gas leak detecting means, and a control means for setting the operation timing of the alarm sound generating means,
Also, in a gas leak alarm device provided with a power supply device for gas leak detection means, alarm sound generation means and control means,
In the control means, when a gas leak is detected by the gas leak detection means, power is supplied from the power supply device to the alarm sound generation means and the power supply from the power supply device to the gas leak detection means is cut off. A second state in which power is supplied to the leak detection means from the power supply device and power supply from the power supply device to the alarm sound generation means is interrupted, and the second state is alternately repeated;
If no gas leak is detected by the gas leak detection means in the second state, power is supplied from the power supply device to the gas leak detection means and power supply from the power supply device to the alarm sound generation means is cut off, and the control means is reset to the initial state. There is an automatic reset means.

[0007]

That is, as shown in FIG. 4, when a gas leak is detected, power is supplied to the alarm sound generating means and power is not supplied to the gas leak detecting means. Since the second state in which the power is supplied and the alarm sound generating means is not supplied is alternately repeated, the maximum supply power is consumed by either the gas leak detecting means or the alarm sound generating means in the same manner as in the first aspect of the invention. It is possible to provide a gas leak alarm which can be converted to electric power and is advantageous in terms of power consumption reduction and downsizing by sufficiently reducing the maximum supply power. Moreover, after the gas leak is detected, it is possible to detect whether or not the measure for the gas leak has been executed by displaying the second state in which the gas leak detecting means is supplied with electric power and the alarm sound generating means is not supplied with electric power. Thus, when the measure against the gas leak is executed and the gas leak is no longer detected by the gas leak detection means, the automatic reset means supplies the power to the gas leak detection means and does not supply the alarm sound generation means to the initial state. Since the control means is configured to be automatically reset, it is possible to surely realize the resetting once the gas leakage occurs without forgetting, and to secure the safety in a highly reliable state.

[0008]

The third aspect of the present invention is characterized in that, in the gas leak alarm device according to the second aspect of the present invention, the first state in which power is supplied to the control means and the alarm sound producing means is gas leak detecting means. The point is that it is made to appear continuously for a longer time than the second state in which electric power is supplied to.

[0009]

That is, in addition to the function of the second aspect of the present invention, after the gas leak is detected, as shown in FIG. Since it takes a long time to notify the gas leak, the alarm function can be sufficiently exerted.

[0010]

As a result, the maximum supply power can be sufficiently reduced, which is advantageous in terms of power consumption reduction. Particularly, when the power supply device is an AC type, the transformer can be made sufficiently small to prevent gas leakage. It has become possible to provide a gas leak alarm that is excellent in terms of miniaturization of the alarm and consumes less power when the power supply device is a battery type, which is much more excellent. In particular, according to the second aspect of the present invention, it is possible to provide a gas leak alarm device which can surely realize resetting once a gas leak has occurred and which is excellent in terms of reliability in ensuring safety. Further, according to the third aspect of the present invention, it is possible to provide a further excellent gas leak alarm device that can sufficiently exert the alarm function and can surely realize the reset.

[0011]

【Example】

(Embodiment 1) As shown in FIG. 1, a sensor 1a for detecting gas such as city gas and LPG, and a gas detection circuit 1
b, the gas leak detection means 1 for detecting the presence or absence of gas leak is formed, and based on the information from the gas leak detection means 1, the voice notification means 2 for notifying the gas leak by voice when the gas leak is detected. , Voice synthesis circuit 2a, filter circuit 2
b, an amplifier circuit 2c, and a speaker 2d for setting the operation timing of the gas leak detection means 1 and the voice notification means 2 and operating the display means 3 such as a power lamp and an alarm lamp and the external output circuit 4. 5, a gas leak detection means 1, a voice notification means 2, a control means 5, a display means 3 and a power supply device 6 for the external output circuit 4 are provided to constitute a gas leak alarm device. To form the power supply device 6,
A plug 6a connected to a commercial power source, a transformer 6b, a rectifying / smoothing circuit 6c are provided, and a voice synthesis circuit 2a and a filter circuit 2 are provided.
b, the amplifier circuit 2c, the control means 5, the display means 3 and the external output circuit 4 are provided with a first constant voltage circuit 6d, and the gas detection circuit 1b is provided with a second constant voltage circuit 6e. The control means 5 is configured to operate as shown in FIG. 2, that is, as described below. (1) In the initial state in which the control means 5 is reset by the automatic reset means 8, the gas leak detection means 1 is instructed by the control means 5 to the first and second constant voltage circuits 6d and 6e.
Power is supplied from the power supply device 6 and the power supply from the power supply device 6 to the voice notification unit 2 is cut off. (2) When the gas leak detection means 1 detects a gas leak, the control means 5 based on the information from the gas leak detection means 1.
From the power supply device 6 to the voice notification means 2 in response to a command from the power supply device 6 to the first and second constant voltage circuits 6d and 6e, the power supply device 6 supplies power to the gas leakage detection means 1 in the first state, And a second state in which electric power is supplied from the power supply device 6 to the gas leak detection means 1 and power supply from the power supply device 6 to the voice notification means 2 is alternately repeated,
The maximum supply power is reduced to the power consumption by either the gas leak detection means 1 or the voice notification means 2.
At this time, the first state in which power is supplied to the voice notification means 2 is made to appear continuously for a longer time than the second state in which power is supplied to the gas leak detection means 1, and for example, the first state is set to about 10 seconds and the second state. Keep the condition for about 4 seconds to fully exercise the alarm function. (3) When the automatic resetting means 8 determines that the gas leakage detecting means 1 does not detect the gas leakage in the second state based on the information from the control means 5 and the gas leakage detecting means 1, the automatic resetting means 8 As a result, the control means 5 is reset to the initial state in which the gas leak detection means 1 is supplied with power from the power supply device 6 and the power supply from the power supply device 6 to the voice notification means 2 is cut off. That is, after the gas leak is detected, it is possible to detect whether or not the measure for the gas leak has been executed by the second state, and when the measure for the gas leak is executed, the automatic resetting means 8 initializes the control means 5. It automatically resets to the state, and realizes reset without forgetting reset once a gas leak occurs.

(Embodiment 2) Although the construction is shown in FIG. 3, the same reference numerals are used for the same constructions as in Embodiment 1 and their explanations are omitted. An artificial resetting means 7 is provided in place of the automatic resetting means 8 of the first embodiment, and the control means 5 is configured to operate as shown in FIG. 4, that is, as described below. (1) When the control means 5 is reset by the artificial reset means 7, the control means 5 causes the first and second constant voltage circuits 6d,
In response to a command to 6e, the gas leak detection means 1 is connected to the power supply device 6
Power is supplied from the power supply device 6 to the voice notification means 2, and the initial state is reached. (2) When the gas leak is detected by the gas leak detection means 1, the control means 5 causes the first and second constant voltage circuits 6d and 6e.
In response to the command to the voice notification means 2, power is supplied from the power supply device 6 to the gas leak detection means 1 at the same time as the power supply from the power supply device 6 is cut off to the gas leak detection means 1 or the voice notification means 2. Power consumption is reduced by either one of them.

It should be noted that it is convenient if the artificial resetting means 7 is interlocked with another operating mechanism other than the gas leak detecting means so that the resetting operation is interlocked with the valve closing operation of the gas cock or the like.

[Other Embodiments] The gas leak detection means 1 can be appropriately selected depending on the type of the sensor 1a, the detection method, the target gas, and the like. Instead of the voice notifying means 2, "peepy"
May be a buzzer that emits an alarm sound or the like, and they are collectively referred to as an alarm sound generating means. The specific configurations of the voice notification unit 2 and the control unit 5 can be changed appropriately. The specific configuration of the power supply device 6 can be changed as appropriate, and may be, for example, a battery type. In the second aspect of the present invention, the temporal correlation between the first state in which power is supplied to the voice notification means 2 and the second state in which power is supplied to the gas leak detection means 1 can be changed appropriately. Book second
Also, in the third invention, the specific configuration of the automatic resetting means 8 can be appropriately selected.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a block diagram of a first embodiment.

FIG. 2 is a graph showing the operating state of the first embodiment.

FIG. 3 is a block diagram of a second embodiment.

FIG. 4 is a graph showing the operating state of the second embodiment.

FIG. 5 is a graph showing an operating state of a conventional example.

FIG. 6 is a graph showing an operating state of another conventional example.

[Explanation of symbols]

 1 gas leak detection means 2 alarm sound generation means 5 control means 6 power supply device 8 automatic reset means

Claims (3)

[Claims] 1. A gas leak detecting means (1) for detecting the presence or absence of gas leak, and an alarm sound generating means for emitting an alarm sound when a gas leak is detected based on information from the gas leak detecting means (1). (2), control means (5) for setting the operation timing of the gas leak detection means (1) and the alarm sound generation means (2), the gas leak detection means (1), the alarm sound generation means ( 2) and a gas leak alarm provided with a power supply device (6) for the control means (5), wherein the control means (5) detects a gas leak by the gas leak detection means (1). A gas leak alarm which is a means for supplying power from the power supply device (6) to the alarm sound generating means (2) and at the same time cutting off power supply from the power supply device (6) to the gas leak detection means (1). vessel. 2. A gas leak detecting means (1) for detecting the presence or absence of gas leak, and an alarm sound generating means for emitting an alarm sound when a gas leak is detected based on information from the gas leak detecting means (1). (2), control means (5) for setting the operation timing of the gas leak detection means (1) and the alarm sound generation means (2), the gas leak detection means (1), the alarm sound generation means ( 2) and a gas leak alarm provided with a power supply device (6) for the control means (5), wherein the control means (5) detects a gas leak by the gas leak detection means (1). A first state in which power is supplied from the power supply device (6) to the alarm sound generating means (2) and power supply from the power supply device (6) to the gas leakage detection means (1) is cut off; Gas leak detection means (1)
Is a means for alternately repeating the second state in which electric power is supplied from the power supply device (6) to the alarm sound generating means (2) from the power supply device (6), and the second state is alternately repeated. If no gas leak is detected by the gas leak detection means (1), the gas leak detection means (1)
An automatic reset means for resetting the control means (5) to an initial state in which electric power is supplied from the power supply device (6) to the power supply device (6) and power supply from the power supply device (6) to the alarm sound generating means (2) is cut off 8) Gas leak alarm provided. 3. The gas leak alarm device according to claim 2, wherein said control means (5) is a means for continuously expressing said first state for a longer time than said second state.