JPH01263412A - Gas safety device - Google Patents

Abstract

PURPOSE:To provide a positive prevention of various accidents of gas leakages by a method wherein a gas flow is generated after opening an equipment plug, a valve is opened by detecting a flow of gas with a gas flow sensor and in turn if a flame is gone out, this diminished state is detect by a flame sensor and then the valve is closed. CONSTITUTION:When an equipment plug 2 is opened to start using of gas, a gas flow is generated. This state is detected by a main body 10 of a gas flow sensor, a signal of 'opened valve' is transmitted from a transmitter 13 to a receiver 16 with gas within a pipe 15 being applied as medium, a solenoid valve 17 is opened and then an ignition is carried out. Simultaneously, a flame sensor 12 also starts its operation and starts to monitor a flame. If failure ignition is generated, the flame sensor 12 detects that the flame is not generated, a signal of 'closed valve' is generated from the transmitter 13 and then the solenoid valve 17 is closed. If a piping 15 is broken and a flow of gas is terminated, the signal of 'opened valve' sent from the transmitter 13 does not reach the receiver 16, resulting in that the solenoid valve 17 is closed.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a gas safety device, and more specifically to a gas safety device configured to prevent scum accidents occurring indoors from an indoor main valve. It is related to.

[Prior Art] Most gas accidents, whether propane gas or city gas, occur indoors from the indoor main valve.

The majority of these accidents are mainly due to raw gas being released due to ignition confirmation errors, lights going out, gas pipes coming off, and damage.

In order to prevent these accidents, a flame sensor is installed on the gas appliance side, and the valve on the appliance side is closed and the gas supply is stopped if the flame does not ignite or the flame goes out. There is.

In addition, a pressure gauge is installed to detect the pressure inside the hose, and if a gas pipe becomes disconnected or a gas leak occurs, this is detected, an alarm is issued, and the main valve is closed.

Furthermore, a method is widely adopted in which a gas leak detector is provided inside the room and an alarm is issued by detecting leaked gas.

[Problems to be solved by the invention] When a flame sensor is used, it is necessary to specially manufacture the gas appliance itself, and it is not possible to improve existing scrap appliances, and it is difficult for the user to do so. The problem is that new equipment must be purchased, which is extremely uneconomical.

In addition, when using a pressure gauge, it can be attached to an existing hose and existing equipment can be used, but it is not possible to detect extinguishing or ignition errors, and a signal line is used to control the t-magnetic valve structure. Unless it is connected to a stopper, it is not possible to shut off the scum.

As a result, the structure becomes complicated, and it becomes difficult to attach the device externally without modifying the device, making it impractical.

Furthermore, when using a waste leakage alarm, there is a problem that unless the amount of leakage reaches a certain level, the waste leakage cannot be detected, which is extremely dangerous.

[Means for solving the problems] In the present invention, in order to eliminate the above-mentioned problems,
We adopted a structure that includes a flame sensor attached to the waste appliance, a gas flow sensor that works in conjunction with this flame sensor, and a valve that works in conjunction with this gas flow sensor.

[Operation] In the structure described above, the valve is provided on the gas valve side of the house. In the initial state, the gas valve is open and the appliance valves and valves are closed.

In this state, the piping from the valve to the appliance is filled with gas. Thus, opening the appliance tap creates a waste flow that is detected by the gas flow sensor and opens the valve for normal gas use.

If no waste flow occurs even when the appliance valve is opened, it means that waste has leaked from the piping, and the valve will not open in this state.

On the other hand, if a flame goes out, the flame sensor detects this and closes the valve, so no gas leaks.

Furthermore, if the appliance does not ignite within a few seconds after opening the tap, the flame sensor detects this and closes the valve, so there is no gas leakage due to ignition errors.

[Example] Hereinafter, the present invention will be described in detail based on the example shown in the drawings.

Figures 1-1 and 2 illustrate an embodiment of the present invention, with Figure 1 showing the overall structure.

In FIG. 1, the reference numeral 1 indicates a gas appliance, which is provided with an appliance plug 2. As shown in FIG.

A gas flow sensor 3 is provided on the side surface of this waste instrument. This sensor 3 is connected to a pipe connection port 4 of the gas appliance 1.

The gas flow sensor 3 has a casing 5, as shown enlarged in FIG. has been done.

A chamber 8 is formed in the middle of the main body 6, and a baffle plate 9 for generating turbulent flow is provided on the upper part of the chamber 8. On the side of the chamber 8 there is a gas flow sensor and a control unit 11.
A flame sensor 12 is connected to. This flame sensor 12
It also uses the structure of an ultrasonic Doppler sensor.

Further, a transmitter 13 is attached to the main body 6. An ultrasonic oscillator 14 is provided inside this and generates an ultrasonic pulse signal at a predetermined period.

The other end of the body 6 of the gas flow sensor is connected to one end of the plumber 5, and the other end of the pipe 5 is connected to the receiver 16. A solenoid valve 17 is provided integrally with the receiver 16, and the power supply device 1
8 is also provided integrally. Power supply 18 is connected to a 100 volt power source via outlet 19.

Further, the receiver 16 integrated with the solenoid valve is connected to a gas valve 20 in the house.

Next, the operation of this embodiment configured as above will be explained.

First, connect the gas flow sensor 3 at one end of the pipe 15 to the gas appliance 1 side, and connect the receiver 16 side at the other end to the gas valve 2o.
Connect outlet 19 to a 100 volt power source 4. At this time, the solenoid valve 17 is closed, and the appliance plug 2 is also closed.

Next, the gas valve 20 is opened, a door (not shown) formed in a part of the casing 5 of the gas flow sensor 3 is opened, a power switch (not shown) is turned on, and the transmitter 13 is manually operated to receive the signal. The solenoid valve 17 is opened via the device 16.

Then, after the pipe 15 is filled with gas, the solenoid valve 17
Stop.

This state becomes a standby state.

In this state, when the appliance stopper 2 is opened to start using gas, a gas flow is first generated. This gas flow hits the baffle plate 9 and generates a Karman vortex.

This state is detected by the gas flow sensor body 10, which is an ultrasonic Doppler sensor, and is transmitted from the transmitter 13 to the receiver 16.
A signal indicating "valve open J" is sent to the pipe, and the solenoid valve 17 is opened and the normal use of waste continues.

'' Simultaneously with the operation of the double gas flow sensor body 10, the flame sensor 12, which also has the structure of an ultrasonic Doppler sensor, also starts operating and starts monitoring the flame.

If an ignition error occurs, the flame sensor 12 detects that no flame is generated, and a few seconds later, the transmitter 13 issues a "valve close" signal and closes the solenoid valve 17. Therefore, gas leakage accidents due to ignition errors do not occur. In this case, if the user does not visually recognize the ignition error, the gas inside the plumber 5 will have been released, so the solenoid valve 17 will be manually opened as described above, the gas will flow, and the ignition will be re-ignited. do it.

On the other hand, if a flame goes out due to boiling over or strong wind blowing, the flame sensor 12 detects this and a few seconds later the transmitter 13 generates a signal to close the solenoid valve 17 to stop the gas. No gas accidents will occur.

Additionally, if the gas flow stops due to the plumber 5 being bent or a heavy object being placed on it, the "valve open" signal sent from the transmitter /13 at a predetermined period will not reach the receiver 16. Solenoid valve 17 is closed.

Furthermore, if the pipe 15 is disconnected or a hole is open, causing a gas leak, no gas flow will occur even if the appliance stopper 2 is opened, so the gas flow sensor body 10 will not detect the gas flow. , the solenoid valve 17 does not open.

As described above, the device of the present invention can detect various kinds of gas leaks from the gas valve inside the house. However, even when there is a gas cylinder outside, such as propane gas, there is a difference between the gas cylinder side and the gas inside the house. The present device can be applied in the same manner between the stopper and the stopper.

[Effects] As is clear from the above explanation, the present invention is a completely new idea that can reliably prevent various gas leak accidents between gas valves and gas appliances (including gas appliances). According to the present invention, a gas safety device can be provided at low cost and easily manufactured.

[Brief explanation of the drawing]

The drawings are for explaining one embodiment of the present invention, and FIG. 1 is a schematic diagram of the overall configuration, and FIG. 2 is an enlarged sectional view of a gas flow sensor. DESCRIPTION OF SYMBOLS 1... Gas appliance, 2... Appliance stopper, 3... Gas flow sensor, 8... Chamber, 9... Shaking board, 10...
・Gas flow sensor body, 12...Flame sensor, 13...
Transmitter, 15... Piping, 16... Receiver, 17...
・Solenoid valve, 20...gas valve. 3 forces ゛jinshi (12 inches and 9 honors Tsutane tOP pass bell (se υ dimensions 11 emotions 114 total knees outside / Z * begging nib

Claims (3)

[Claims] (1) A gas safety device comprising a flame sensor attached to a gas appliance, a gas flow sensor interlocking with the flame sensor, and a valve interlocking with the gas flow sensor. (2) A patent claim characterized in that it is provided with a transmitter that operates in conjunction with the flame sensor and the gas flow sensor and emits a valve opening/closing signal, and a receiver that corresponds to the transmitter and opens and closes the valve. Gas safety devices as described in scope 1. (3)