JPS5838291Y2 - Gas valve opening/closing restraint device - Google Patents

Description

[Detailed description of the invention] This invention connects the appliance main valve installed in the main gas supply pipe in a floor-standing gas combustion appliance placed in parallel with kitchen furniture to the flexible gas conduit of a portable gas appliance. More specifically, regarding the opening/closing restraint device for the reserve valve, the restraint means correlates the order of operation of both throws to prevent gas leakage that may occur due to opening/closing errors between the two throws. It relates to a device that can do this.

In recent years, with the rationalization of kitchens, appliance valves have been installed on the upstream side of the main gas supply pipe of gas combustion appliances, and an appropriate number of branch pipes have been installed downstream of the main gas supply pipe, and gas can be supplied to the built-in combustion part within the appliance or to another portable gas source outside the appliance. Instruments that can be supplied to the instrument side are becoming widespread.

For example, in a floor-standing water heater as illustrated in Fig. 1, the outer casing includes a heat exchanger, a combustion section, and a water heater that performs the hot water supply function.
It has a built-in gas conduit and control device, and a portable gas appliance (e.g. gas stove, rice cooker, etc.) is placed on the top plate of the outer box, and the gas is connected to the branch pipe end from the main gas supply pipe inside the outer box. The gas is supplied to portable gas appliances through a rubber hose or the like from a spare stopper installed in the tank.

The main stopper and spare stopper provided inside the outer case are opened and closed independently.

As such gas combustion appliances with spare plugs become more widespread, accidents due to incomplete connections of rubber hoses, etc. are becoming more frequent as the frequency of use of spare plugs increases, so various types of connections are required to ensure sufficient safety. Safety devices have been devised and put into practical use.

As an example, a well-known outlet-type pipe joint (this shape is registered as Utility Model No. 916146) has a socket and a plug fixed to the end of a rubber hose and a gas valve, respectively. can be connected or disconnected with a one-touch operation, and when connected, the sealing and connection between the two can be reliably maintained9.

A gas outlet plug that is integrally equipped with the plug of this outlet type pipe fitting is called a gas outlet plug.

I closed this gas outlet plug as a spare plug for the appliance, but it is hardly sufficient from a security standpoint.

In other words, in gas combustion appliances with spare plugs (see examples), the appliance has multiple gas valves, and the operations are independent, so it is usually difficult to prevent gas leaks when the appliance is not in use, for example at night. In preparation for security in the event of an emergency (earthquake, fire, etc.), it is necessary and desirable to always close the gas supply main valve.

However, if you somehow forget to close the gas valve of a portable gas appliance connected to the backup valve, or due to an emergency such as an earthquake, the main valve of the appliance is turned off without closing the main valve. If you open the main valve of the appliance when you use it again after closing the gas supply line and cutting off all output connected to the gas supply pipe, especially if the portable gas appliance is not equipped with a combustion safety device (e.g. thermocouple safety device). ), there is a risk of gas leakage and an unexpected situation.

Furthermore, if the valve portion of the gas outlet joint is broken and the engagement is disengaged, there is a risk of gas leakage as well.

The present invention was developed based on the above-mentioned problem, and the opening/closing operations of the reserve stopper and the appliance main stopper are regulated so that the reserve stopper must always be closed first before the appliance stopcock can be operated. , a simple and inexpensive method that prevents gas leakage by preventing operation errors between the two frames, regardless of whether the portable gas combustion appliance is equipped with or without a combustion safety device. The present invention provides a gas valve opening/closing restraint device that can be manufactured.

An example of implementing the present invention will be described below with reference to the accompanying drawings.

In the figure, 1 is an outer case, and inside the outer case 1 is a heat exchanger 2. A combustion section 3 (not shown) and a gas and water control section 4 are built in at appropriate positions.

Reference numeral 5 denotes a top plate that covers the upper part of the outer box 1, and the rear side thereof forms a back step along the horizontally long length of the outer box 1.

Reference numeral 6 denotes a main gas supply pipe, on the upstream side of which is interposed an instrument main valve 7, and on the downstream side connected to the gas control section 4.

The appliance stopper 7 is disposed at a position where it can be opened and closed by inserting your hand through an opening in the back section 5a of the top plate 5 covered by a cover plate 14, which will be described later.

Reference numeral 8 denotes a gas branch pipe branched from the main gas supply pipe 6 downstream of the appliance stopper 7, the downstream side of which is a gas outlet plug disposed at a predetermined position in the back section 5a of the top plate 5, which will be described later. It is connected to 9.

Reference numeral 9 denotes a gas outlet plug with a plug 10 fixed to the gas outlet side, which is connected to the socket 12 of the rubber hose terminal of the portable gas appliance 11 (in this example, a gas stove) placed on the top surface of the top plate 5 and the plug 10. connected by means of synchronization.

Reference numeral 13 denotes a knob, which is attached to the closing rod 9a of the gas outlet plug 9.
A protrusion 13a is formed at the same position as the opening direction of the opening hole 9b through which gas is delivered when the gas is opened, and the protrusion 13H prevents the cover plate 14, which will be described later, from being expanded.

Reference numeral 14 denotes a horizontally longitudinal lid body which covers the opening formed in the back step 5a of the top plate 5 and is pivoted so as to be deployable with both ends rearward as fulcrums. A through hole 15 having a downward outer peripheral edge through which the knob 13 can be inserted is provided at the position where the closing rod 9a is erected, and the outer peripheral edge of the through hole 15 has a closed position of the rotation angle θ of the knob 13. A notch 15a is formed in which the protrusion 13a fits and can be inserted.

Furthermore, a notch 16 for inserting the socket 12 is provided on the front surface of the cover plate 14 on the center line of the through hole 15, and a handle portion 17 is provided approximately in the center of the cover plate 14.

Next, the operation of the apparatus of the present invention having the above-mentioned configuration will be explained.

The floor-standing water heater of the embodiment equipped with the device of the present invention has a heat exchanger 2. Combustion part 3. A gas/water control unit 4 is installed at an appropriate location, and gas and water are supplied to the appliance main valve 7 by opening the external supply source valve (not shown), and water is supplied to a predetermined control unit (not shown). (not shown) through conduits, but since the function of this device itself is the same as that of a well-known water heater, a description thereof will be omitted.

Hereinafter, only the operation of the opening/closing restraint device according to the present invention will be described in detail.

First, as shown in FIG. 3, when the portable gas appliance 11 is placed on the top plate 5 on the outer box 1 and the socket 12 at the end of the rubber hose is connected to the plug 10 of the gas outlet plug 9 (normal use condition), The cover plate 14 covers the opening of the back step 5a, and the knob 13 of the closing rod 9a, which is erected on the through hole 15 of the cover plate 14, is fitted and protrudes.

When the knob 13 is rotated to open the gas outlet plug 9 in this state, the protrusion 13a of the knob 13 is at a position displaced by a rotation angle θ from the notch 15a of the through hole 15, so that the cover plate 1
Even if an attempt is made to open 4, the protrusion 13a serves as a locking member, and therefore cannot be opened.

Next, when removing the socket 12 from the gas outlet plug 9 or controlling the opening/closing of the appliance main plug 7 in the above-mentioned state, first pinch the knob 13 so that the protrusion 13a is connected to the notch 15.
When the cover plate 14 is rotated in the direction of the solid line arrow to the position that coincides with a, the lock of the cover plate 14 is released, so that the handle of the cover plate 14 is moved to the part 17.
It can be expanded and transferred using the hinges at both ends as fulcrums until it stands almost upright by hooking your fingers on it.

At this time, the gas outlet plug 9 is in a closed state.

In this state, the device main valve 7 is opened and closed.

Then, after putting the cover plate 14 back on to its original position, turn the knob 13
When it is returned to its original position, the protrusion 13a becomes perpendicular to the notch 15a (a state in which it locks the lid plate 14 at the beginning of the head), and gas is supplied from the socket 12 to the portable gas appliance 11 via the rubber hose.
It will be sent to the side.

As described above, when opening/closing the appliance stopcock 7 or removing the socket 12, the protrusion 13 of the tab θ13
A and the notch 15 a are aligned to close the gas passage of the gas outlet plug 9 in the direction of the portable gas appliance 11 and cut off the gas delivery before opening the lid plate 14 and opening the main valve 7 of the appliance. It is not possible to open or close it.

The structure of the opening/closing restraint device of the present invention is not limited to the embodiments described above. For example, it uses a link mechanism of a plate cam or a rod that follows the opening/closing operation of the reserve stopper, in short, if the reserve stopper is not closed, the lid is closed. A number of configuration variations are conceivable in which the plate 14 is opened so that the appliance tap 7 cannot be operated.

According to the opening/closing restraint device of the present invention as described above, the following effects can be obtained.

Conventionally, the main valve for floor-standing gas combustion appliances and the spare valve for portable gas appliances have no correlation with each other and are configured to be operated independently. If you forgot to close the appliance valve or were unable to close it, and after closing only the appliance valve, there was a risk of gas leaking from the portable gas appliance when you opened the appliance valve for reuse.

However, according to the device of the present invention, the gas outlet plug must be closed (cutting off the gas supply source for portable gas appliances) before operating the appliance main valve, and then the lid plate must be opened to turn off the appliance main valve. Since the structure is such that it cannot be operated, it is possible to prevent gas leakage even during reuse in the above-mentioned situation, freeing you from this anxiety, and since the restraint means itself has a simple structure, it can be manufactured at low cost. and has a beneficial effect on safety.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway schematic diagram of the gas valve opening/closing restraint device according to the present invention applied to a floor-standing water heater as an example, and FIGS. The main parts are shown, and Figure 2 is a perspective view showing the lid plate of the main parts in an expanded state.
FIG. 3 is a partially cutaway side view of the main part, and FIG. 4 is a plan view of FIG. 3. 1...Outer box, 2...Heat exchanger, 5...
...Top plate, 5a... Back part of the top board, 6...
...Main gas supply pipe, 7...Appliance main valve, 8.
... Gas branch pipe, 9 ... Gas outlet plug, 10 ... Plug, 11 ... Portable gas appliance, 12 ... Socket, 13...
・Knob, 13 a...Knob protrusion, 14・
...Lid plate, 15...Through hole, 15a...
... Notch, 16... Notch, 17...
・The clue is the part.

Claims (1)

[Scope of utility model registration request] In a floor-standing gas combustion appliance that has a built-in appliance main stopper and a spare stopper branched from the downstream side of the main stopper installed on the top plate, an opening is formed in the top plate and the opening can be pivoted so as to be freely deployable upwards. Covering with a supported lid plate, inserting the knob of the spare stopper through the through hole of the lid plate and standing upright on the top plate, and relating rotation of the knob and opening/closing of the lid plate in a constraint relationship, On the other hand, opening and closing of the moth stopper is characterized in that the device main stopper is positioned so that it can be opened and closed by inserting a hand through the opening, and the cover plate cannot be opened unless the reserve stopper is closed. restraint device.