JP2961683B2 - High load burner for small gas stove - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas burner for household small gas stoves, which is generally called a single-burn gas stove. The amount of combustion (thermal power) without changing the ring size (diameter of crater) of the conventional small gas stove burner. And a burner improved so that it can be increased.

[0002]

2. Description of the Related Art A conventional burner for a small gas stove is shown in FIG.
As shown in FIG. 1, generally, a burner body 104 for obtaining a premixed gas obtained by mixing a gas fuel such as LPG and primary air;
The crater 1 having a large number of flame ports 102 and 103 mounted on the burner main body 104 and dividing and ejecting the premixed gas
01 and. The burner main body 104 is provided with a crater 101, and a crater base 105 for forming a ring-shaped flow path for flowing gas fuel between the crater 101 and a venturi tube 106 as a premixer connected thereto.
It is composed of The venturi tube 106 mixes with the gas while sucking the surrounding air by the injection energy of the gas fuel injected from the gas nozzle 107 installed at the opening end. In addition, the ring-shaped crater 101 has a series of flame cavities 102 inside and outside thereof,
103 is provided as shown in FIG. 4 and FIG. 5, and according to this burner,
From 3, a flame is formed inward. Here, if the interference of adjacent flames occurs, a red fire due to a shortage of air is caused. Therefore, it is necessary to open each flame outlet at a sufficient distance. In addition, in order to increase the burning amount and the thermal power of the burner without changing the ring size of the crater 101, the number of holes in the crater is increased by providing the flares 103 on the inside as well as the flares 102 outside the crater 101. We are devising.

[0003]

However, the inner circumferential side of the ring-shaped crater 101 has a shorter circumferential length than the outer circumferential side, and the inwardly formed flame becomes more inward. Since the distance between adjacent flames is reduced, the flame interval needs to be wider than the flame diameter 102 on the outer diameter side in order to avoid interference of the flame. For this reason, the number of flame ports 103 that can be formed on the inside becomes extremely smaller than that on the outside. Further, the inside of the crater 101 has a problem that the introduction of the outside air is restricted by the flame formed outside, so that the combustion air tends to be insufficient. For this reason, in the structure of the conventional gas burner for general household use, it is difficult to perform high load combustion (high calorie), for example, 4,500 kcal /
Since h is the limit, there is a problem of insufficient heating power in, for example, Chinese cuisine requiring high heat. An object of the present invention is to provide a burner for a small gas stove having the same ring size so that the combustion amount can be increased as compared with the conventional case.

[0004]

The configuration of the high-load burner for a small gas stove according to the present invention is as follows. 1 . On the outer peripheral surface side of the ring-shaped crater, a first flame port is formed obliquely upward, and a second flame port is formed outside of the first flame port and diagonally upward, and a third flame is formed. An opening is formed outside the second opening and in a horizontal direction, a second opening is formed below the first opening, and a third opening is formed below the second opening. A high-load burner for a small gas stove, wherein a flame port is formed, and a secondary air supply port is provided above the first flame port. 2 . In 1 above, a high-load burner for a small gas stove, wherein the third flame port is formed obliquely upward. 3 . In the above 1 or 2 , a high-load burner for a small gas stove, wherein an inner peripheral surface of a crater through which secondary air flows toward a secondary air supply port is inclined.

[0005]

In the burner for a small gas stove, the first
The premixed gas is supplied from the premixer to the flame port, the second flame port, and the third flame port. The flames formed in the first, second, and third flames are all formed radially outward from the ring-shaped flame, are formed stepwise, and are formed in the first flame. The secondary air required for combustion is sufficiently supplied from the secondary air supply port to the flame. As a result, in the flames formed in the first, second, and third flame ports, and in the first, second, and third flame ports, there is no interference between the flames formed in the adjacent flame ports, respectively. Further, since the secondary air is sufficiently supplied from the inside to the flame formed in the first flame port, an independent flame having a strong thermal power is formed in each flame port.

[0006]

1 and 2 show an embodiment of a crater of a high-load burner for a small gas stove according to the present invention. The burner main body of the high-load burner for a small gas stove according to the present invention is not particularly important in the present invention, and the description and illustration of the structure are omitted. Is possible.

The crater 1 of this embodiment has a ring shape in which a bottom portion 2 mounted on a burner main body (not shown) is entirely open, and a first obliquely upwardly extending outer peripheral surface side thereof is provided. A flame port 3 is formed, a second flame port 4 obliquely upward is formed on the outer side of the lower stage, and a third flame port 5 in a horizontal direction is further formed on the outer side of the lower stage. A predetermined interval (pitch) is provided. First and second, third flame ports 3, 4,
The predetermined interval of 5 is a pitch required so that at least the flames formed by the flame ports 3, 4, and 5 do not interfere with each other and become red fire due to lack of air. Further, it is preferable to make the hole diameter of each of the flame ports 3, 4, and 5 as small as possible in order to obtain flame stability.

[0008] The first flame 3 and the second, third flame 4,5
Pilot flame ports 6 and 7 for forming a pilot flame (sled flame) are appropriately provided below. Although the pilot flame ports 6 and 7 are not particularly limited, in the case of the embodiment, the pilot flame ports 6 and 7 are formed so as to be shifted from the corresponding flame ports 3, 4 and 5 by a half pitch in the circumferential direction.

At the top of the crater 1, a crater top plate 11 is installed with a gap. The crater top plate 11 is supported at a fixed distance from the crater 1 by columns 12 provided at regular intervals. For this reason, a secondary air supply port 13 is formed between the crater top plate 11 and the crater 1, from which air flowing in from the space 14 inside the stove is supplied to the outside space. It is supplied by natural ventilation toward 15. Reference numeral 16 denotes an inclined surface formed on the inner peripheral surface side of the crater 1 to improve natural ventilation. According to the burner for a small gas stove of the present invention configured as described above, the fuel gas burns as follows.

From the first, second, and third flame ports 3, 4, and 5, premixed gas supplied from the gas passage 1a is directed outward so that the distance increases as the distance from the premixed gas increases. Spouts. Therefore, each flame is formed at a sufficient interval that does not interfere with each other, and burns without generating red fire. At this time, the flames of the second and third flame ports 4 and 5 obtain secondary air by air rising from around the stove and completely burn. Also, the flame of the first flame 3 is surrounded by the flames of the second and third flames 4 and 5, and even if the combustion air cannot be sufficiently obtained from the surroundings, the inside of the stove is The secondary air can be obtained by the rising air flowing from the space 14 through the secondary air supply port 13 to the outer space 15. Therefore, the flame of the first flame port 3 is not short of air, and can be completely burned. In addition, since the first flame port 3 and the second and third flame ports 4 and 5 are all directed outward, the flame and the flame spread radially and do not narrow. Each of the intervals 4, 5 can be reduced to the minimum. Therefore, the number of the first, second, and third flame outlets 3, 4, and 5 can be increased in comparison with the case of a conventional crater having the same ring size. The above embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications can be made without departing from the gist of the present invention. For example, in the case of the third flame port 5, it may be formed not diagonally but obliquely upward.

[0011]

As is apparent from the above description, the high-load burner for a small gas stove according to the present invention comprises a first flame port, a second flame port, and a third flame port arranged in the circumferential direction, all of which are ring-shaped. Because it was provided on the outer peripheral surface side of the crater of the shape of
Since the flames formed in the third flame outlet are all outward and have a radial shape that increases as the distance between the flames increases, the distance between the first, second, and third flame holes is minimized. Can be narrowed. In addition, since the first, second, and third triple flame ports are formed on the outer peripheral surface side of the crater, the circumferential length is long and more flame ports can be formed. Therefore, even with a ring diameter of the same size, a larger number of flame ports can be provided than in the past, so that the amount of combustion of the flame port can be increased to increase the amount of combustion. For example, for a crater of the same ring size, 4,500 kcal
/ H from 7,500 kcal / h.

In the case of the first aspect of the present invention, even if the flame of the first flame port is surrounded by the flames of the second and third flame ports in the lower stage, it becomes difficult to take in the secondary air from the outside. Since sufficient secondary air is supplied from the inside through the secondary air supply port to the premixed gas ejected from the first flame port, a complete combustion flame is formed also in the first flame port. it can.
Therefore, even with a crater having a small ring size, complete combustion can be realized and a large amount of combustion can be obtained. Further, in the case of the present invention, the flow of the secondary air can be smoothly performed by forming the inclined surface on the inner peripheral surface of the crater.

[Brief description of the drawings]

FIG. 1 is a plan view showing 火 of a crater of a high-load burner for a small gas stove according to the present invention.

FIG. 2 is an enlarged sectional view taken along line AA '.

FIG. 3 is a partially longitudinal front view showing an example of a conventional small gas stove burner.

FIG. 4 is a longitudinal sectional view showing an example of a crater of a conventional small gas stove burner, and is an explanatory diagram showing only a half from the center.

FIG. 5 is a plan view showing 火 of the crater of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Crater 1a Gas passage 2 Bottom 3 First flame 4 Second flame 5 Third flame 6, 7 Pilot flame 11 Crate top plate 12 Column 13 Secondary air supply port 14 Space 15 Outside space 16 Incline surface

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-185023 (JP, A) Japanese Utility Model Showa 58-21724 (JP, U) Japanese Utility Model Application Showa 55-100828 (JP, U) (58) Field (Int.Cl. ⁶ , DB name) F23D 14/06 F24C 3/08

Claims (3)

(57) [Claims] 1. A first flame is provided on an outer peripheral surface side of a ring-shaped crater.
The mouth is formed obliquely upward and the second flame is the first flame
Outside and diagonally upward, and the third flame port
Formed horizontally outside the second flame port
At the same time, a second flame port is formed below the first flame port,
Forming a third flame port below the second flame port;
A high-load burner for a small gas stove having a secondary air supply port provided above a first flame port . 2. The method according to claim 1, wherein the third flame port is obliquely upward.
A high-load burner for small gas stoves formed in a suitable orientation . 3. The secondary air supply according to claim 1 or 2,
Incline the inner peripheral surface of the crater through which secondary air flows toward the mouth
Small gas stove for high-load burner consisting of Te.