JPH11193928A - Gas appliance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas appliance that is applicable for plural kinds of fuel gases and can be used by optionally selecting any one of plural kinds of gases. SOLUTION: A plurality of gas circuits 2 and 4 are provided independently of one another in correspondance with various kinds of fuel gases to be supplied from the outside, and an appliance valve 9 to supply and stop a fuel gas supplied from the gas circuits 2 and 4 to a burner 1 is provided. Further, in the case where a supply line for fuel gas is connected with either of the gas circuits 2 and 4, a simultaneous usage prevention means 24 is provided to prevent the supply line from being connected with the other gas circuit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a gas appliance,
More specifically, the present invention relates to a gas appliance capable of handling a plurality of types of fuel gas.

[0002]

2. Description of the Related Art Conventional gas appliances include gas appliances using gas supplied from a gas company via gas pipes (hereinafter referred to as "city gas") as fuel gas and LP gas cylinders. There are gas appliances that use LP gas (propane gas, etc.) supplied through a gas pipe as fuel gas, and gas stoves that use city gas as fuel (city gas stove) and those that use LP gas as fuel (LP
Gas stove).

[0003] The city gas stove is characterized in that it has a low running cost and can be used continuously and stably, but has the disadvantage that it cannot be used in places where city gas piping is not provided. is there.

[0004] Further, the LP gas stove is characterized in that it can be used in an area where so-called city gas piping is not provided, but when the LP gas cylinder becomes empty, it is necessary to replace the cylinder. Become
There is a disadvantage in that it cannot be used unless the cylinder is refilled or replaced.

[0005] For the above-mentioned reasons, both the city gas stove and the LP gas stove are widely used in various areas as equipment necessary for daily life.

By the way, since the calorific value differs between city gas (generally, natural gas is often used in recent years) and LP gas, the fact is that both cannot be used as fuel gas for the same gas stove. .

[0007] For this reason, the city gas is moved from an area where city gas pipes are provided (city gas use area) to an area where city gas pipes are not provided (LP gas use area). If you move from an LP gas-using area where city gas has not been installed to a city gas-using area where city gas pipes are provided,
There is a problem that the LP gas stove cannot be used.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a gas appliance capable of coping with a plurality of types of fuel gas by one unit.

[0009]

In order to achieve the above object, a gas appliance according to the present invention (claim 1) is adapted to a single burner and a plurality of fuel gases of different types supplied from outside. And a plurality of gas circuits arranged independently of each other, and a device for supplying and stopping fuel gas supplied from the gas circuit to the burner.

A plurality of gas circuits are provided independently of each other in correspondence with a plurality of different types of fuel gas supplied from the outside, and an instrument for supplying / stopping each fuel gas to / from a burner is provided. One can respond to each fuel gas supplied from a plurality of gas circuits, so that any one of a plurality of types of fuel gas can be arbitrarily selected and used. Therefore, the city moved from an area where city gas piping is provided to a city where LP gas is used, or from an area where LP gas is used to city gas. In such a case, it becomes possible to cope with each fuel gas with one gas appliance, and it becomes unnecessary to purchase a gas appliance every time when moving.

A gas appliance according to a second aspect of the present invention is a single appliance provided with a plurality of openable and closable gas circuits corresponding to the plurality of gas circuits, as an appliance for supplying and stopping fuel gas to and from the burner. It is characterized by the use of a brush.

When a single appliance provided with a plurality of gas circuits corresponding to the plurality of gas circuits is used as the appliance, the number of parts can be reduced and the product cost can be reduced. Become.

In the gas appliance according to a third aspect of the present invention, a single ignition unit for igniting the plurality of fuel gases is used as an ignition unit for igniting the fuel gas, and the operation of the appliance is performed. Thus, the ignition means is operated.

When a single ignition means is used and this ignition means is operated in conjunction with the operation of the appliance, the number of parts can be further reduced and the cost of the product can be reduced.

Further, in the gas appliance according to claim 4, when a fuel gas supply line is connected to any of the plurality of gas circuits, the fuel gas supply line is connected to the other gas circuits. It is characterized by having a simultaneous use preventing means for preventing such a situation.

By providing the simultaneous use prevention means, it is possible to prevent the occurrence of excessive combustion (excessive thermal power) due to the simultaneous use of a plurality of types of fuel gas, thereby improving reliability.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described, and features thereof will be described in more detail. In this embodiment, a cooking gas stove that can handle two types of fuel gas, a city gas and an LP gas, will be described as an example.

[Embodiment 1] FIG. 1 shows that one of two gas circuits (city gas circuit) has city gas (house gas,
FIG. 2 is a diagram showing a state in which a supply line (gas hose) of, for example, 13A) is connected, and FIG. 2 shows a supply line (gas hose) of an LP gas supplied from the LP gas cylinder to the other of the two gas circuits (LP gas circuit). FIG.

The gas stove includes a burner 1 for burning city gas and LP gas as fuel gas, a city gas circuit 2 for supplying city gas as fuel gas to the burner 1 from outside, and a burner 1 for supplying LP gas to the burner 1. And an ignition means 5 for igniting city gas or LP gas supplied to the burner 1.

In this embodiment, the single ignition means 5 is configured to perform both the ignition of the city gas and the ignition of the LP gas. Further, as the ignition means 5, a piezoelectric ignition device, an ignition switch, or the like can be used.

At the tips of the city gas circuit 2 and the LP gas circuit 4, nozzles 3 having a hole diameter corresponding to each gas type are provided.
6, 37 (FIGS. 3A and 3B) are provided.

The nozzles 36 and 37 are formed integrally with a damper nozzle 38 (FIGS. 3A and 3B) provided at the opening of the mixing tube 6. An opening 35 is formed in the damper nozzle 38 so as to have a predetermined area for adjusting the amount of air suction, and the opening 35 exhibits a damper function. In a general stove, the damper is adjusted so as to have a predetermined opening in order to adjust the air suction amount according to the gas type.
In order to cope with different types of fuel gas, it is necessary to adjust the damper opening in each case according to the gas to be used. In this embodiment, the arrangement of the nozzles 36 and 37 is taken into consideration. Opening 35 of damper nozzle 38
It is not necessary to adjust the opening degree.

That is, in this embodiment, LP
The nozzle 37 of the gas circuit 4 is arranged at a position substantially at the center axis of the mixing pipe 6 so that air can be easily sucked. Normally, the opening degree of the damper must be narrower than that of LP gas such as 13A. Nozzle 36 of the city gas circuit 2
By displacing the mixing tube 6 from the center axis position, the air suction performance is reduced, and an appropriate amount of air can be sucked without narrowing the opening of the damper nozzle 38.

At the rear end of the city gas circuit 2, a plug (a plug for a gas hose quick coupling) 31 to which a socket (a socket for a gas hose quick coupling) 32 attached to an external gas hose (supply line) 39 is connected. The socket 42 attached to an external gas hose (supply line) 40 is provided at the rear end of the LP gas circuit 4.
Is connected. The plugs 31 and 41 and the sockets 32 and 42 are connected to the socket 3
When the sleeves 32a and 42a disposed on the outer periphery of the shafts 2 and 42 so as to be movable in the axial direction move rearward (in a direction away from the plugs 31 and 41), the connection between them is released, and the sleeves 32a and 42a are moved forward (plugs). 31 and 41), the connection between the two is fixed.
No. 12064, and the like.

The city gas circuit 2 and the LP gas circuit 4 are provided with a single instrument loop 9. The instrument shell 9 includes an instrument shell main body 10 and two parallel gas circuits (a circuit 11 for city gas) disposed in the instrument shell main body 10.
And a closing member 13 provided with a circuit 12) for LP gas,
A knob 14 is provided for rotating the closing member 13 to open and close the gas circuits 11 and 12, and the ignition means 5 is operated by the rotation of the knob 14.

In the gas stove according to this embodiment, the seesaw plate 2 rotatably held by the rotating shaft 25 is provided.
3 are provided. The seesaw plate 23 constitutes a simultaneous use preventing means 24 for preventing the simultaneous use of the city gas and the LP gas, and one end 23a is disposed at the rear end of the LP gas circuit 4. And the other end 23b is disposed near the plug 31 disposed at the rear end of the city gas circuit 2.

When the city gas socket 32 is connected to the plug 31 as shown in FIG. 1, the other end 23b of the seesaw plate 23 is moved toward the plug 31 (right side in FIG. 1) by the socket 32. When pushed, the seesaw plate 23 rotates and the one end 23a moves to the opposite side (the left side in FIG. 1).
It cannot be connected to the plug 41 of the LP gas circuit 4. When the socket 42 to be connected to the LP gas circuit 4 is connected to the plug 41, one end 23a of the seesaw plate 23 moves to the opposite side (the left side in FIG. 1) of the plug 41, The sleeve 42a of the socket 42 is pushed to the opposite side (the left side in FIG. 1) of the plug 41 by one end 23a of the seesaw plate 23, and the socket 42 and the plug 41
Is disconnected.

On the other hand, as shown in FIG. 2, when the socket 42 for LP gas is connected to the plug 41,
2, one end 23a of the seesaw plate 23 is pushed toward the plug 41 (the right side in FIG. 2), and the seesaw plate 23 rotates, and the other end 23b moves to the opposite side (the left side in FIG. 2). The socket 32 to be connected to the city gas circuit 2 is
It cannot be connected to the plug 31 of the city gas circuit 2. When the socket 32 to be connected to the city gas circuit 2 is connected to the plug 31, the other end 23b of the seesaw plate 23 moves to the opposite side (the left side in FIG. 2) of the plug 31. The sleeve 32a of the socket 32 is pushed to the opposite side (left side in FIG. 2) of the plug 31 by the other end 23b of the seesaw plate 23, and the socket 32 and the plug 31 are pressed.
Is disconnected.

As a result, the simultaneous use of the city gas and the LP gas can be reliably prevented, and the simultaneous use of the city gas and the LP gas can avoid excessive combustion (excessive thermal power). , Reliability can be improved.

[Embodiment 2] FIG. 4 is a view showing a gas stove according to another embodiment of the present invention.

In the gas stove of this embodiment, a shutter 51 is provided in front of the plugs 31 and 41, and the shutter 51 is used for preventing simultaneous use of city gas and LP gas. Prevention means 2
It is 4.

That is, in the gas stove of this embodiment, plugs 31 and 41 for city gas and LP gas provided at the rear ends of the city gas circuit 2 and the LP gas circuit 4 are provided. A shutter 51 and a shutter guide 52 for slidably holding the shutter 51 are provided between the gas sockets 32 and 42.

In the gas stove according to the second embodiment,
When one of the city gas and LP gas sockets 32 and 42 is connected to the plug (31 or 41) by operating (moving) the shutter 51, the front of the other plug (31 or 41) is connected. Is closed by the shutter 51, and the other socket (32 or 42) cannot be connected. In FIG. 4, a socket 42 can be connected to a plug 41 provided at the rear end of the LP gas circuit 4, and the city gas socket 32 is connected to the plug 3
1 cannot be connected.

Since the configuration of the other parts of the gas stove of the second embodiment is the same as that of the gas stove of the first embodiment, the description of the corresponding parts of the first embodiment will be referred to, and the description thereof will be given here. Is omitted. Note that, in FIG. 4, portions denoted by the same reference numerals as those in FIGS. 1 and 2 indicate the same or corresponding portions.

In the gas stove according to the second embodiment,
As described above, with a simple configuration, it is possible to reliably prevent city gas and LP gas from being used simultaneously, and excessive combustion (excessive thermal power) is caused by simultaneous use of city gas and LP gas. Can be avoided, and the reliability can be improved.

In the first and second embodiments,
The case where the gas hose is connected by using a socket to connect the gas hose to the plug has been described, but the rear end of the city gas circuit and the LP gas circuit is made of rubber without using the socket and the plug. It is also possible to use a so-called rubber tube mouth type in which the gas hoses are directly connected.

In the first and second embodiments, the gas stove is described as an example. However, the present invention can be applied to other gas appliances such as a grill. In the first and second embodiments, the case where the number of gas circuits is two has been described as an example. However, the number of gas circuits may be three or more, and the gas circuits may be configured to correspond to three or more types of gases. .

In the gas stoves of the first and second embodiments, there are no particular restrictions on the specific external configuration and detailed structure, and a plurality of plugs and a plurality of plugs for supplying a plurality of fuel gases to a normal gas stove are provided. Various types of gas stoves with a gas hose connection nozzle can be configured.

In other respects, the present invention is not limited to the above-described embodiment.
Various applications and modifications can be made within the scope of the invention with regard to the specific configuration of the simultaneous use preventing means for preventing the simultaneous use of gas.

[0040]

As described above, the gas appliance of the present invention
A plurality of gas circuits are provided independently of each other for a plurality of fuel gases of different types supplied from the outside, and a device for supplying and stopping each fuel gas to and from the burner is provided. The table can correspond to each fuel gas supplied from a plurality of gas circuits, and any one of a plurality of types of fuel gas can be arbitrarily selected and used. Therefore, moving from an area where city gas piping is provided to a city gas usage area to an area where city gas piping is not provided to LP gas,
If you move from a gas-using area to a city gas-using area, you can use a single gas appliance to handle each fuel gas, eliminating the need to purchase a gas appliance each time you move. .

Further, in the case where a single appliance provided with a plurality of gas circuits corresponding to the plurality of gas circuits is used as the appliance as in the gas appliance of claim 2, the number of parts is reduced. It is possible to reduce the cost and product cost.

Further, as in the gas appliance of claim 3, a single ignition unit for igniting a plurality of fuel gases is used as the ignition unit, and the ignition unit is operated by the operation of the appliance. In this case, it is possible to reduce the number of parts and reduce the product cost.

Further, by providing the simultaneous use prevention means, it is possible to prevent the occurrence of excessive combustion (excessive thermal power) due to the simultaneous use of a plurality of types of fuel gas and improve the reliability. Will be possible.

[Brief description of the drawings]

FIG. 1 is a view showing a gas appliance (gas stove) according to an embodiment of the present invention, showing a state in which a city gas supply line is connected to one of two gas circuits (city gas circuit). It is.

FIG. 2 is a view showing a gas appliance (gas stove) according to one embodiment of the present invention, showing a state in which an LP gas supply line is connected to the other of two gas circuits (LP gas circuit). It is.

3A and 3B are diagrams showing a structure of a damper nozzle of a gas appliance (gas stove) according to one embodiment of the present invention, wherein FIG. 3A is a front view and FIG.

FIG. 4 is a view showing a gas appliance (gas stove) according to another embodiment of the present invention.

[Description of Signs] 1 Burner 2 City gas circuit 4 LP gas circuit 5 Ignition means 6 Mixing pipe 9 Instrument lamp 10 Instrument lamp body 11 City gas circuit 12 LP gas circuit 13 Closure 14 Knob 23 Seesaw plate 23a Seesaw One end of the plate 23b The other end of the seesaw plate 24 Simultaneous use prevention means 25 Rotating shaft 31 City gas plug 32 City gas socket 32a City gas socket sleeve 35 Opening 36 City gas nozzle 37 LP gas nozzle 38 Damper nozzle 39 Gas hose (supply line) for city gas 40 Gas hose (supply line) for LP gas 41 Plug for LP gas 42 Socket for LP gas 42a Sleeve for socket for LP gas 51 Shutter 52 Shutter guide

Claims (4)

[Claims] 1. A single burner, a plurality of gas circuits arranged independently of each other corresponding to a plurality of different types of fuel gas supplied from the outside, and a fuel supplied from the gas circuit A gas appliance for supplying / stopping gas to / from the burner. 2. An appliance for supplying / stopping fuel gas to / from a burner, wherein a single appliance having a plurality of openable / closable gas circuits corresponding to the plurality of gas circuits is used. The gas appliance according to claim 1, wherein 3. A single ignition means for igniting the plurality of fuel gases is used as ignition means for igniting the fuel gas, and the ignition means is operated by the operation of the appliance. The gas appliance according to claim 1 or 2, wherein 4. A simultaneous use preventing means for preventing a fuel gas supply line from being connected to another gas circuit when a fuel gas supply line is connected to one of the plurality of gas circuits. The gas appliance according to claim 1, 2, or 3, further comprising: