JPS6151204B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gas turbine, and aims to make the heat distribution uniform and improve the thermal efficiency.

Current gas stoves are constructed as shown in Fig. 2 in order to achieve uniform heat distribution, with a main flame hole 2 formed in the shape of tooth grooves on the outer periphery, and an inner flame hole 2' bored in the upper part of the inside. A main flame 14 and an inner flame 14' are formed by a burner cap 5' and a burner head 6' on which the burner cap 5' is placed and connected to a mixing pipe. In this case, an air vent 16 is provided in the center for supplying combustion air to the inner flame 14'.

That is, when heating something with poor fluidity, such as a hot cake or stew, poor heat distribution due to the flame can cause local burns, so a small flame is created inside to equalize the heat. For this reason, an air vent is required to supply air to the inner flame, and this creates a path for boiling spills to fall into or below the device, posing a strong problem of cleaning.

Furthermore, since the inner flame is formed in a small space surrounded by the large main flame and the pan bottom placed on top, stabilizing the inner flame becomes a very difficult problem. In addition, if the pan is moved closer to the burner in order to improve thermal efficiency, it will be difficult to stabilize the inner flame.

In this way, from the standpoint of thermal efficiency and contamination, it is desirable to have no internal flame and no central air vent, but an internal flame is necessary to ensure uniformity of heat, and consideration must be given to its stabilization. .

Here, we provide a gas stove that improves thermal efficiency, uniformizes heat distribution, and can cope with dripping of boiling liquid, etc., and will be explained based on FIG. 1.

Reference numeral 1 designates a gas stove main body, which has tooth grooves forming main flame holes 2 on its outer periphery, and a burner cap 5 partially or entirely composed of a porous body 4 made of a heat-resistant inorganic material with pores 3 bored in the upper part. A stove burner consisting of a placed burner head 6, a mixing pipe 7, and a nozzle 8, a gas stove 9, a saucer 10, and a trivet 11.
This makes up a gas stove. The porous body 4 is made of a heat-resistant inorganic material supporting an oxidation catalyst such as a platinum-based or transition metal oxide catalyst.

Reference numeral 12 is a heat-resistant, heat-transmitting material such as crystallized glass, and is detachably held on the upper surface of the burner cap 5 by several support rods 13. 14 is a flame formed in the main flame hole 2, and 15 is a pan.

In the above configuration, when gas fuel is supplied, it is supplied to the burner head 6 while being sufficiently mixed with the air sucked in by the mixing pipe 7, with most of it flowing into the main flame hole 2, and a small amount of the remaining air-fuel mixture flowing into the porous body 4. It is supplied from the pore 3. At this time, the area of the pores 3 is determined so that the mixture of the two is distributed so that the heat distribution is uniform.
The supplied air-fuel mixture is ignited and combusted. At this time, the main flame 14 is formed in the main flame hole 2 in the same manner as in the conventional gas stove, and the main flame 14 is wide in the outer circumferential direction, and the heating form of the pan remains unchanged. The air-fuel mixture supplied to the porous body 4 is ejected from the pores 3 and forms a small flame when ignited, but as the porous body 4 is heated, almost flameless combustion occurs due to the action of the catalyst, and the porous body 4 becomes red hot. Heat transmitting body 1
2, it emits infrared rays and also supplies high-temperature combustion gas to the bottom of the pan. In other words, it corresponds to conventional internal inflammation. However, what is different from the conventional method is that the porous body performs catalytic combustion, so at least the air required can continue combustion and release heat. However, it is desirable that the amount of air suctioned by the nozzle 8 be as large as possible, and it is best if the primary air ratio is 60 to 70% or more, preferably close to 100%. This may cause problems with the stability of the main flame, so if necessary, the main flame and the porous body may have separate air-fuel mixture supply passages.
That is, the use of individual mixing tubes must also be considered.

By forming the upper part of the burner cap 5 with the porous body 4 carrying the catalyst as described above, there is no need to consider the stability of the inner flame described above, and there is no need for air ventilation holes in the inner periphery. Moreover, the inner flame becomes substantially flameless, and a highly uniform heat distribution is obtained as heat radiation due to red heat.

In addition, since there is no need to consider the stability of the inner flame, the height of the trivet 11 can be lowered, which can be expected to improve thermal efficiency.Also, since there is no need for air vents on the inner periphery, it is possible to 10 prevents the broth from falling to the lower part of the saucer, which eliminates the drawbacks described at the beginning and provides the desired effect.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a gas stove according to an embodiment of the present invention, and FIG. 2 is a sectional view of a main part of a conventional gas stove burner. 2... Flame hole (main flame hole), 3... Stoma, 4... Porous body, 7... Mixing tube, 12... Heat transmitting body.

Claims (1)

[Claims] 1 A plurality of flame holes are formed on the outer periphery of a burner head having a mixing tube to generate a Bunsen-like flame as the main flame, and the upper part of the burner head is partly or entirely made of a porous body with a plurality of small pores through which the fuel mixture can pass. A gas stove comprising: a porous body supporting an oxidation catalyst; and a heat-resistant heat transmitting body disposed to cover the porous body from above.