JPH094853A - Gas hot plate - Google Patents

Abstract

PURPOSE: To improve a combustibility without deteriorating thermal efficiency by deviating the blowout directions of all flame holes of a ring shaped burner by prescribed angle from the center of the burner. CONSTITUTION: A ring shaped burner head 4b has many flame holes 12b formed circumferentially on its inner peripheral surface with the blowout directions of the flame holes 12b deviated by a prescribed angle B from the center of the burner. Thus, the combustion flames 10b of the burner reaching the bottom 11b of a pan initially collide with a part near the center, spread in the outer peripheralion and are elevated along the side surface of a cooking pan by a draft force. Therefore, the residence time and distance of the flames 10b on the bottom 11b of the pan are increased, and the bottom 11b of the pan is effectively used for a heat transfer, so that thermal efficiency is enhanced. Further, the flames do not collide with one another, so that blowout gas from the flame holes 12b easily flows and primary air can be effectively attracted. The flames turn so that the primary air effectively comes into contact with secondary air to be agitated therewith. Therefore, a desired combustion can be obtained even in a small combustion space.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas stove having an annular burner in which a large number of flame ports are arranged in a row in the circumferential direction of an inner peripheral surface.

[0002]

2. Description of the Related Art Heretofore, there has been known a gas stove provided with an annular burner in which a large number of flame openings are arranged in a row in a circumferential direction of an inner peripheral surface. For example, as shown in FIGS. 5 and 6, the gas stove proposed in the actual Kaihei 2-100102 has a soup pan 2 placed on a top plate 1 and a cooking pan 8 above an opening 15 formed in the soup pan 2.
The Gokutoku claw 5 for mounting the burner, the burner body 3 for burning the fuel gas, and the annular burner head 4a which is detachably mounted coaxially with the head of the burner body 3 at a substantially central position of the juice tray 2. The secondary air 9a is supplied to the central opening of the burner head 4a so that the annular burner burns well, and the secondary air 9b is effectively supplied between the juice receiving tray 2 and the burner head 4a.

[0003]

However, in the gas stove having such a structure, as shown in FIG. 6, the ejection directions of all the flame openings 12a are directed to the center, and therefore, the opposing flame openings 12a Since it becomes difficult for the jetted gas to flow from the flame outlet 12a after colliding with the flame 10a, the primary air suction may be deteriorated and the combustibility may be hindered. Further, since all the flames 10a are concentrated in the center and collide with each other, the flow of the secondary air 9b from below the central opening 15 is reduced, and the flames 10a
The flammability was not good because the contact amount between a and air was insufficient. Therefore, it is necessary to increase the distance from the burner flame outlet 12a to the cooking pot 8 in order to secure a space for making sufficient contact between the secondary air 9a and 9b. Since it did not hit vigorously, the heat efficiency sometimes decreased. A gas stove according to the present invention has an object to solve the above problems and provide a gas stove capable of improving combustibility without impairing thermal efficiency.

[0004]

A gas hob according to claim 1 of the present invention which solves the above-mentioned problems is provided with an annular burner in which a large number of flame ports are arranged in a row in the circumferential direction of the inner peripheral surface. In the above, the gist is that the ejection directions of all the flame openings of the annular burner are displaced from the center by a predetermined angle. The gas stove according to claim 2 is the same as the gas stove according to claim 1,
The gist is that the ejection directions of all the flame openings of the annular burner are inclined upward by a predetermined angle.

[0005]

The gas stove according to claim 1 of the present invention, which has the above-described structure, has a predetermined angle offset from the center of the ejection direction of all flame ports provided in the circumferential direction of the inner peripheral surface of the burner. The collision of the flames of the facing flames disappears. As a result, the gas ejected from the flame port can easily flow and the primary air can be sucked in favorably. Further, since the flame swirls and the agitating contact with the secondary air becomes good, the flame can be satisfactorily combusted even in a small combustion space. Further, in the gas stove according to claim 2, since the ejection directions of all the flame ports provided in the circumferential direction of the inner peripheral surface of the burner are inclined upward by a predetermined angle, the draft force is increased and the secondary air from below is increased. And the state of contact with the secondary air becomes even better.

[0006]

EXAMPLES In order to further clarify the constitution and operation of the present invention described above, preferred examples of the gas stove of the present invention will be described below. The feature of the gas stove of the present embodiment is that a burner is provided in which the ejection directions of all the flame ports provided in the circumferential direction of the inner peripheral surface are displaced from the center by a predetermined angle and are inclined upward by a predetermined angle. The basic configuration of the gas stove is the same as the conventional example, and the common part is
The same reference numerals are given to the drawings and the description is omitted. As an example, an annular burner provided on a gas stove is shown in FIGS.
This will be described with reference to FIGS. As shown in FIG. 1, this gas stove includes a soup saucer 2 placed on a top plate 1, a burner body 3 for burning fuel gas, and a burner body 3 at a substantially central position of an opening 15 of the soup saucer 2. An annular burner head 4b is detachably mounted coaxially on the head. As shown in FIGS. 2 and 4, the annular burner head 4b is formed by arranging a large number of flame openings 12b in the circumferential direction of the inner peripheral surface thereof with a predetermined angle B offset from the center and tilted upward by A degrees. .

One side of the burner body 3 is supported by the engagement of the primary air suction damper 18 and the gas ejection nozzle 19, and the other side is fixed in the instrument by locking the foot 21 to the support plate 20. Then, the primary air is introduced into the burner through the opening of the primary air suction damper 18 while being entrained by the jet of jetting gas jetted from the gas jet nozzle 19. The opening of the primary air suction damper 18 of the burner body 3 sucks primary air and adjusts the opening degree to adjust the suction amount. As described above, the burner of this embodiment is configured by the Bunsen burner that sucks the primary air by the gas jet jet of the gas jet nozzle 19. Further, a doughnut-shaped mixing chamber is formed at the head of the burner body 3, and the burner head 4b is detachably mounted on the mixing chamber. Further, the burner head 4b is provided with a large number of flame openings 12b in the circumferential direction of the inner peripheral surface thereof.
The direction of is shifted from the center by a predetermined angle and is tilted upward. Further, a hole for introducing secondary air is provided in the center of the burner head 4b.

In Gokutoku, a ring-shaped air supply / exhaust rectifying plate 7 is fitted at a predetermined height position of the Gokutoku claw 5, and a locking portion 6 provided below the Gokutoku claw 5 is fitted into a hole provided in the top plate 1. It is fitted and positioned and fixed to the top plate 1. The inner peripheral surface of the air supply / exhaust rectification plate 7 extends downwardly to the vicinity of the opening 15 formed in the juice receiving tray 2, and a space up to the upper ends of the juice receiving tray 2 and the Gotoku nail 5 is divided vertically. The soup saucer 2 is covered almost entirely.
Further, since the Gokutoku with the air supply / exhaust baffle 7 is exposed to flames, the material used is heat-resistant enamel made of iron that can withstand high temperatures. The top plate 1 and the soup saucer 2 are coated with a non-leakable fluorine resin, which is a non-leakable synthetic resin, because the broth of cooked food and the pieces of cooking material are likely to fall off, and the surface does not easily get dirty. There is.

The cooking pot 8 is placed on the Gotoku Nail 5 and the burner head 4 is placed.
When b is ignited and cooking is started, the ejection direction of the flame outlet 12b is displaced from the center by a predetermined angle B, so the pot bottom 11
As shown in FIG. 3, the combustion flame 10b of the burner which has reached b, first hits the vicinity of the center and spreads in the outer peripheral direction while turning, and rises along the side surface of the cooking pot 8 by the draft force. In this way, the residence time and distance of the flame 10b on the pot bottom 11b become longer, the pot bottom 11b is effectively used for heat transfer, and the thermal efficiency becomes higher. (Conventionally, as shown in FIG. 7, since the combustion flame 10a that hits the pot bottom 11a spreads radially, the residence time and distance of the flame 10a on the pot bottom 11a are short.)

Further, since there is no collision of flames, the gas blown out from the flame port 12b can flow easily, and the primary air can be sucked in favorably, and the flame swirls to make good stirring contact with the secondary air 9a, 9b. Therefore, it is possible to satisfactorily combust even in a small combustion space. Further, since the combustion flame 10b rises along the side surface of the cooking pot 8 while swirling, the flame does not overflow to the outside of the cooking pot 8 so that the sleeve of the user (especially the elderly) catches fire. It is safe because I have never been told that I will get burned.

Further, as shown in FIG. 4, since the ejection direction of the flame outlet 12b is inclined upward by a predetermined angle A, the flame collides with the bottom of the pot vigorously, and the heat transfer is improved, so that the thermal efficiency is increased. To do. In addition, the draft force increases and the secondary air 9
Since more a and 9b are involved, the amount of contact with the secondary air 9a and 9b is further increased and combustion is improved. Therefore,
In the gas stove of this embodiment, the thermal efficiency can be improved without impairing the combustibility, so that the energy can be saved.

Further, since the air supply / exhaust rectifying plate 7 is provided, the air supply passage for the secondary air 9a is protected up to the vicinity of the opening 15 formed in the juice receiving tray 2, so that flames and exhaust overflowing downward are supplied to the air supply passage. It is no longer said that the secondary air 9a flowing through the air is polluted to cause defective combustion due to lack of oxygen. Further, it is not necessary to provide a gap for secondary air between the soup saucer 2 and the burner head 4a, and the spilled juice from the cooking pot 8 may adhere to the parts in the appliance through the gap. Can be prevented. Further, since the broth that has entered through the central hole of the burner head 4a can be received by the internal juice receiving tray 16 and taken out and discarded, it does not adhere to the parts.

Further, since the exhaust air does not flow into the air supply passage to contaminate the secondary air 9a, the combustion performance is stable even if the dimension from the soup saucer 2 to the cooking pot 8 is further reduced. Since a high flame can directly come into contact with the cooking pot 8 to improve heat transfer, the thermal efficiency is improved. Also, the soup tray 2 is separated from the top plate 1 in this embodiment, but it may of course be integrally formed with the top plate 1. Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments. For example, a burner head is
Needless to say, it may be provided in a position projecting from the opening of the tray and can be implemented in various modes without departing from the scope of the present invention.

[0014]

As described in detail above, claim 1 of the present invention
According to the described gas stove, since the flame is swirled by shifting the jet direction of the burner flame outlet from the center by a predetermined angle, the residence time and distance of the flame at the bottom of the pot become longer, and the pot bottom effectively transfers heat. Is used for high heat efficiency.
Further, the swirling of the flame facilitates the flow of the gas ejected from the flame port, which improves the suction of the primary air and also improves the stirring contact with the secondary air, thereby improving the combustibility. Also, since the flame spreads like a vortex from the center of the bottom of the pot, the flame does not overflow significantly outside the pot. As a result, the sleeve of the user is safe because it does not catch fire and get burned.

Further, according to the gas stove according to the second aspect of the present invention, the flame is vigorously collided with the bottom of the pot by inclining the jet direction of the flame upward, so that the thermal efficiency can be improved. Also,
Since the draft force is increased and the contact with the secondary air is improved, the combustibility can be improved.

[Brief description of drawings]

FIG. 1 is a side sectional view of a gas stove as an example.

FIG. 2 is a front view of the burner head with the flame opening angle shifted as an example.

FIG. 3 is a conceptual diagram showing a flow of burner flames at the bottom of a pot as an example.

FIG. 4 is a side sectional view of a gas burner as one example.

FIG. 5 is a side sectional view of a gas stove as a conventional example.

FIG. 6 is a front view of a burner head as a conventional example.

FIG. 7 is a conceptual diagram showing a flow of a burner flame at the bottom of a pot as a conventional example.

[Explanation of symbols] 1 top plate 2 soup saucer 3 burner body 4 burner head 5 Gotokuzume 7 supply / exhaust rectifiers 9a, 9b secondary air flow 10a, 10b flame 11a, 11b pot bottom 12a, 12b flame outlet 18 primary air suction Damper 19 Gas injection nozzle

Claims (2)

[Claims] 1. A gas stove equipped with an annular burner having a large number of flame openings arranged in the circumferential direction of the inner peripheral surface, wherein the ejection directions of all the flame openings of the annular burner are offset from the center by a predetermined angle. Gas stove characterized by. 2. The gas stove according to claim 1, wherein the ejection directions of all the flame openings of the annular burner are inclined upward by a predetermined angle.