JP2002106856A - Gas stove - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve both of the improvement of heating efficiency for a cooking pan and the stability of combustion performance. SOLUTION: Since a trivet 14 is directly fixed to a burner 12 through a trivet receiving ring 16, a distance between a flame hole 5 and an upper end of the trivet is uniquely determined, and the distance h is kept unchanged even when a cooking pan P is placed on the trivet 14. As a result, in a high efficiency stove, in which the distance h is brought into close contact up to allowable combustion limit for improving the heat efficiency, the distance h is kept unchanged accurately to maintain excellent combustion performance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas stove with improved thermal efficiency.

[0002]

2. Description of the Related Art Hitherto, as one method for improving the thermal efficiency of a gas stove, it is known to increase the heat transfer area, that is, to increase the contact area between the flame and the pot bottom. In order to increase the heat transfer area, it is conceivable to increase the burner opening angle, that is, the gas injection angle, or to reduce the distance between the burner opening and the pot bottom. In high-efficiency gas stoves with a higher flame angle and a shorter distance between the flame port and the pan bottom, the distance between the flame port and the pan bottom is brought close to the permissible limit of combustion to improve thermal efficiency. Therefore, if the distance becomes shorter than the reference value, the combustion deteriorates immediately, and if the distance becomes longer, the thermal efficiency decreases. Therefore, it is necessary to maintain this distance accurately.

[0003]

However, in the above-mentioned high-efficiency gas stove, as shown in FIG. 5, the gotoku 54 is placed on the top plate 11, and the flame opening 15 of the burner 12 and the gotoku nail 54a are formed. Distance from the upper end, that is, the distance h between the flame outlet 15 and the bottom surface of the cooking pot P or the like placed on the gotoku 54
'Cannot be determined uniquely. Furthermore, since the top plate 11 is large and is fixed around the body frame, a large deflection occurs in the part where the virtue is placed, so that the size and weight of the cooking pot P etc. placed on the virtue 54 differ. As a result, the distance h 'between the bottom of the pot and the flame outlet 15 changes considerably. It is an object of the present invention to solve the above-mentioned problems and to achieve both improvement of the heating efficiency of a cooking pot and stabilization of combustion performance.

[0004]

According to a first aspect of the present invention, there is provided a gas stove having a burner in which a number of flame ports are radially arranged on an outer periphery, and a pan placed above the burner. The gist of the present invention is to provide a gas stove provided with the above-mentioned virtues for providing virtues receiving means for detachably mounting the virtues and supporting the virtues receiving means with the burner.

According to a second aspect of the present invention, in the gas stove according to the first aspect of the present invention, the above-mentioned gas receiving means is also used as a juice receiving tray, and the juice receiving tray is provided on an outer peripheral portion of the burner main body. Characterized by being placed and supported

In the gas stove according to the first aspect of the present invention having the above structure, since the virtues are directly supported by the burners through the virtues receiving means, the distance between the burners and the upper end of the virtue is univocally determined. As a rule, even if a cooking pot or the like is placed on the gotoku, the distance between them does not change and is kept constant.

In the gas stove according to the second aspect of the present invention, the juice tray is mounted on the outer peripheral portion of the burner main body, and the juice tray functions as a receiving means, so that it is not necessary to increase the number of components. Production costs can be reduced.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In order to further clarify the configuration and operation of the present invention described above, a preferred embodiment of a gas stove according to the present invention will be described below.

FIG. 1 and FIG. 2 show a gas stove as a first embodiment. FIG. 1 is a side view of a cross section taken along dashed line AA in FIG. 2. In the gas stove 10, an opening 11a is provided in a top plate 11, a burner 12 is arranged at a central position of the opening 11a, and a ring-shaped juice receiving tray 13 is placed on an outer peripheral edge of the opening. And, above the burner 12, a gotoku 14 on which the cooking pot P is placed is provided. The burner 12 has a burner main body 12a having an annular air-fuel mixture chamber for mixing fuel gas and primary air, and a burner head 12 which is mounted on the burner main body 12a to form a large number of flame ports 15 on an outer peripheral edge.
b. It is desirable that the angle (flame angle d) of the burner 12 with respect to the horizontal direction of the burner 12 be 35 degrees or more in order to increase the thermal efficiency. Further, the burner body 12a is provided with a flange portion 12d that protrudes slightly downward in the horizontal direction so as to surround the annular air-fuel mixture chamber. Flame mouth 15
In the vicinity are an electrode 17 for ignition and a thermocouple 18 for flame detection.
Is installed.

Gotoku 14 has a plurality of Ls on which the cooking pot P is placed.
It consists of a character-shaped five-law claw 14a and a rectifying ring 14b,
An insertion piece 14c is provided at the lower end of the gotoku nail 14a. The rectifying ring 14b is fixed to the middle part of the leg of the goto claw 14a by forming a horizontal ring surface, and the inside of the horizontal ring surface is formed to be inclined downward. In addition, on the entire periphery of the flange portion 12d of the burner main body 12a except for the installation space for the electrodes 17 and the thermocouples 18, a virtues receiving ring 16 as a virtue receiving means is fixedly installed by spot welding or screwing. As shown in FIG. 3, a central opening 16d through which the annular air-fuel mixture chamber of the burner main body 12a is inserted is formed in the goto receiving ring 16.
And a juice receiving hole 1 for accommodating the dent portion of the juice receiving tray 13
6a and a virtues receiving hole 16b for inserting the insertion piece 14c of the virtues 14 and supporting the virtues are provided. The periphery (hatching portion in FIG. 3) of the central opening 16d is joined to the flange portion 12d of the burner main body 12a, and at this portion the stake receiving ring 16 is supported by the burner main body 12a. In the center opening 16d, a cutout 16c for inserting the electrode 17 and the thermocouple 18 is formed.

The top plate 11 has an opening 11a.
Is provided with an insertion hole 11b through which the leg of the gotoku claw 14a is inserted.
Is fixed to the flange 12d of the burner body 12a so that the receiving hole 16b is located immediately below the hole 12b. Therefore, when the sword 14a is inserted into the insertion hole 11b from above the top plate 11 and dropped right below, the insertion piece 14c is inserted into the sword receiving hole 16b, and the stake 14 is fixed to the stake ring 16.

In the gas stove 10 described above, as a method of improving thermal efficiency, the flame angle d is increased (35 degrees or more) in order to increase the heat transfer area.
And the distance h between the upper end of the gotoku claw 14a and the upper end of the gotoku claw 14a are brought close to the allowable combustion limit. Therefore, when the distance h is shorter than the reference value, the combustion performance deteriorates, which causes incomplete combustion. vice versa,
The thermal efficiency decreases as the distance increases. Hence the distance h
Need to be kept accurate. According to the gas stove 10 of the present embodiment, since the gotoku 14 is directly fixed to the burner 12 via the gotoku receiving ring 16, the relationship between the flame outlet 15 and the upper end of the gotoku claw 14a is uniquely determined, The distance h can be accurately maintained, and the combustion performance can be favorably maintained.

At the time of combustion of the burner 12, in addition to the secondary air A (solid arrow in the drawing) passing through the middle opening 12c in the center of the burner head 12b as necessary secondary air, the rectifying ring 1
Secondary air B (solid arrows in the figure) that passes between 4b, the top plate 11, and the juice tray 13 is introduced. Here, since the gas stove 10 is provided with the rectifying ring 14b, the flow of the secondary air B and the combustion exhaust (dotted arrow in the drawing) becomes smooth, and fresh secondary air is always supplied to the flame. Can,
Combustion performance is improved. Connect the tip of rectifying ring 14b to flame outlet 1.
5, the combustion performance is further improved by forming the flame outlet 15 below the lowermost end of the flame outlet 15.

Next, a gas stove according to a second embodiment will be described. As shown in FIG. 4, the gas stove according to the second embodiment also uses the juice receiving tray 46 as a means for receiving the juice, and mounts the inner edge 46a of the juice receiving tray 46 on the flange 12d of the burner main body 12b. By fixing by doing, it is not necessary to increase the number of constituent members, so that the manufacturing cost can be suppressed.

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments at all, and it goes without saying that the present invention can be implemented in various modes without departing from the gist of the present invention. is there. For example, in the first embodiment, the juice receiving tray 13 and the gorgeous receiving ring 16 are arranged so as to overlap with each other. If the arrangement is made such that 16 is lower than the juice receiving tray 13, it is not necessary to provide the juice receiving storage hole 16a. Although the burner main body 12a and the virtue receiving ring 16 are separately formed and then joined together, they may be integrally formed from the beginning.

[0016]

As described in detail above, claim 1 of the present invention
According to the gas stove described, since Gotoku is supported by a burner through Gotoku receiving means, the distance between the burner mouth of the burner and the upper end of Gotoku, that is, the distance between the burner mouth and the bottom of the pot, is univocal. Is kept constant. As a result, this distance can be kept close to the permissible limit of combustion and high efficiency can be maintained without causing deterioration of combustion, which causes generation of harmful substances such as carbon monoxide. It will be.

Further, according to the gas stove according to the second aspect of the present invention, since the virtue receiving means is also used as a soup tray, it is not necessary to increase the number of parts, so that the production cost can be reduced. it can.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a gas stove as a first embodiment as viewed from a side.

FIG. 2 is an external view of a gas stove as the first embodiment.

FIG. 3 is an external view of a goto receiving ring.

FIG. 4 is a cross-sectional view of a gas stove as a second embodiment as viewed from a side.

FIG. 5 is a cross-sectional view of a gas stove as a conventional example viewed from the side.

[Explanation of symbols]

12 burner, 12a burner body, 12b burner head, 12d flange, 14 gotoku, 14a gotoku nail, 1
4b… Rectifying ring, 15… Flame outlet, 16… Gotoku receiving ring,
13,46… Soup saucer

Claims (2)

[Claims] 1. A gas stove having a burner in which a number of flame ports are radially arranged on an outer periphery and a goto for placing a pot above the burner, wherein the goto is detachably mounted. A gas stove comprising a receiving means, wherein said means is supported by said burner. 2. A gas stove according to claim 1, wherein said means for receiving a dish is also used as a soup tray, and said soup tray is mounted and supported on an outer peripheral portion of said burner main body.