TWI797355B - Burners for gas stoves and gas stoves - Google Patents

Abstract

[Problem] To provide a burner for a gas stove, which is provided with an annular upper burner part (5), and an annular burner arranged below the upper burner part (5) and concentric with the upper burner part (5) The lower layer burner part (6); it is characterized in that: the upper layer burner part (5) and the lower layer burner part (6) have a plurality of inner peripheral parts toward the inner side of the radial direction at intervals in the circumferential direction respectively. The open crater (51), (61) constitutes an internal flame type burner, which can prevent the combustion flame of the lower burner part (6) from interfering with the combustion flame of the upper burner part (5). [Solution] Make the burner port (61) of the lower burner part (6) open in a direction inclined downward toward the inner side in the radial direction. It is preferably provided with: a secondary air guide (8), which is directed from the gap (7) between the upper burner part (5) and the lower burner part (6) towards the direction from the lower burner part (6) The flow of secondary air for combustion supplied from the injection part of the mixed gas in the burner port (61) imparts a downward direction component.

Description

Burners for gas stoves and gas stoves

The present invention relates to a burner for a gas stove, and a gas stove equipped with the burner for a gas stove; And the annular lower burner part is concentric with the upper burner part.

Conventionally, as this kind of burner for a gas stove, there is known the constitution of an internal flame type burner, which is to make the upper burner part and the lower burner part have a plurality of burners in the radial direction on the inner peripheral part at intervals in the circumferential direction. A burner with an inner opening (for example, refer to Patent Document 1). In this case, the burner port of the lower burner portion opens in a direction inclined upward toward the inner side in the radial direction.

In the gas stove burner of the above-mentioned conventional example, since the mixed gas from the burner port of the lower burner part is ejected obliquely upward, the combustion flame of the lower burner part generated by burning the mixed gas will be close to the upper layer. Combustion flame in the burner section. Therefore, the combustion flame of the lower burner part and the combustion flame of the upper burner part interfere with each other, and combustibility tends to deteriorate. [Prior Art Literature] [Patent Document]

[Patent Document 1] Japanese Patent Application Publication No. 2-133515

[Technical issues to be solved by the invention]

In view of the above problems, the present invention aims to provide a burner for a gas stove that has an upper and lower burner portion composed of an internal flame type burner, and can suppress the burning of the lower burner portion. The combustion flame interferes with the combustion flame of the upper burner part. [Technical solution to solve the problem]

In order to solve the aforementioned problems, the present invention is a burner for a gas stove, which is provided with an annular upper burner portion, and an annular lower burner portion disposed below the upper burner portion and concentric with the upper burner portion. ; It is characterized in that: the upper burner part and the lower burner part are composed of a plurality of crater internal flame burners opening in the inner peripheral part towards the inner side of the radial direction at intervals in the circumferential direction, and the lower burner The burner of the part opens in a direction inclined downward toward the inner side of the radial direction. Furthermore, the gas stove of the present invention is provided with the above-mentioned burner for a gas stove of the present invention.

According to the burner for a gas stove of the present invention, since the mixed gas from the burner port of the lower burner part is ejected obliquely downward, the position of the combustion flame of the lower burner part formed by burning the mixed gas will be downward. Combustion flame that deviates away from the upper burner section. Therefore, mutual interference of the combustion flame of the lower burner part and the combustion flame of the upper burner part can be suppressed, and combustibility can be improved.

In addition, in the present invention, it is preferable that a gap is provided between the upper burner part and the lower burner part, and at least part of the air passing through the gap is supplied to the secondary air from the lower burner as secondary air for combustion. The mixed gas jetting part of the burner is also provided with a secondary air guide for imparting a downward direction component to the flow of the secondary air for combustion supplied from the gap toward the mixed gas jetting part. Thereby, the combustion flame of the lower burner part is directed downward, and the mutual interference of the combustion flame of the lower burner part and the combustion flame of the upper burner part can be suppressed more reliably.

In addition, in the present invention, it is preferable that an extending portion extending radially inward from the lower end of the burner port of the upper burner portion is provided on the inner peripheral portion of the bottom wall portion of the upper burner portion. This suppresses the downward expansion of the combustion flame of the upper burner portion, and contributes to preventing the combustion flame of the lower burner portion and the combustion flame of the upper burner portion from interfering with each other.

Referring to Fig. 1 and Fig. 2, 1 is the gas stove body of the gas stove, and 2 is the top plate covering the upper surface of the gas stove body 1. The gas stove is provided with a burner 4 for the gas stove, which is adjacent to the burner opening 21 provided on the top plate 2, and heats cooking containers such as pans placed on the hob 3 on the top plate 2. The hob 3 has an annular hob frame 31 and a plurality of hob claws 32 fixed to the hob frame 31 . Moreover, the burner ring 22 which covers the gap with the burner 4 for gas stoves in the opening 21 for burners from above is mounted on the top plate 2. As shown in FIG. And, in the gas stove main body 1, there is provided a soup stock receiver 11 for overflowing soup that falls through the central space surrounded by the burner 4 for the gas stove. Further, the grate frame 31 is formed in a shape to cover the burner ring 22 and the upper burner portion 5 described later from above.

The burner 4 for a gas stove includes an annular upper burner portion 5 and an annular lower burner portion 6 disposed below the upper burner portion 5 and concentric with the upper burner portion 5 . The upper burner part 5 and the lower burner part 6 are constituted by internal flame burners respectively having a plurality of burners 51 and 61 opening radially inward in the inner peripheral part at intervals in the circumferential direction. Hereinafter, the upper burner unit 5 and the lower burner unit 6 will be described in detail.

The upper burner part 5 is composed of the following: a bottom wall part 52 made of sheet metal; an outer peripheral wall part 53 made of sheet metal standing upward from the joint part with respect to the outer peripheral part of the bottom wall part 52; The upper wall portion 54 is fixed to the upper end portion of the outer peripheral wall portion 53 in such a manner as to extend radially inward; It is detachably mounted on the bottom wall portion 52 with a gap between them. In the burner head portion 55 , a plurality of grooves serving as burner openings 51 are formed at intervals in the circumferential direction and are recessed upward from the lower surface. And, by placing the burner head portion 55 on the bottom wall portion 52, the lower surface of the groove will be blocked by the bottom wall portion 52, thereby forming a crater between the bottom wall portion 52 and the burner head portion 55. 51. Furthermore, as shown in FIG. 3 , the burner port 51 is opened radially inward so as to have an angle inclined toward one of the circumferential directions. Thereby, the combustion flame of the upper layer burner part 5 will swirl to one of the circumferential directions, and the heating efficiency of the cooking container will be improved.

Furthermore, on the inner peripheral portion of the bottom wall portion 52 of the upper burner portion 5 , an extended portion 52 a extending radially inward from the lower end of the burner 51 is provided. Further, the secondary air guide 8 , which will be described later, extends downward from the extended portion 52 a and is integrally formed on the bottom wall portion 52 .

The lower burner part 6 is composed of the following: a bottom wall part 62 made of sheet metal is formed with a flange part 62a rising upward and extending radially inward on the inner peripheral side; and an upper part made of sheet metal. The wall portion 63 is formed with a flange portion 63 a standing upward from a junction with the outer peripheral portion of the bottom wall portion 62 and extending radially inward. And the flange part 62a of the bottom wall part 62 and the flange part 63a of the upper wall part 63 are joined. And, in the flange portion 62a of the bottom wall portion 62 and the flange portion 63a of the upper wall portion 63, a plurality of recessed portions 62b recessed downward and recessed portions 63b recessed upward are formed in a position shifted in the circumferential direction. , The void in 63b constitutes the burner 61. Also, as shown in FIG. 4, the burner port 61 is also the same as the burner port 51 of the upper burner part 5, and opens radially inward in the manner of having an angle inclined toward one of the circumferential directions, and the combustion flame of the lower burner part 6 It will also circle in one of the directions.

In addition, it is difficult to touch the lower burner part 6 with hands and it is difficult to clean it. Therefore, the inner diameter D1 of the bottom wall portion 52 of the upper burner portion 5 (the diameter of the lower end portion of the secondary air guide 8 ) is equal to the diameter D2 of the inner peripheral portion where the burner port 61 of the lower burner portion 6 is opened. the following. Thereby, the inner peripheral part where the burner port 61 of the lower burner part 6 opens is hidden below the bottom wall part 52 of the upper burner part 5 when viewed from above. Therefore, it is possible to prevent the overflowing soup dripping down the bottom surface of the cooking vessel from adhering to the burner port 61 of the lower burner unit 6 .

Mixed gas is supplied to the upper burner section 5 and the lower burner section 6 through separate mixing tubes not shown in the figure. In addition, by operating the operating member for adjusting the fire power, which is omitted from the illustration, it is possible to change from a small fire that only makes the lower burner part 6 burn with the minimum fire power to make the lower burner part 6 and the upper burner part 5 burn with the maximum fire power respectively. The firepower adjustment of the burner 4 is carried out in the range of the high fire of the gas stove. Also, in order to reduce the amount of heating of the cooking vessel by the small fire as much as possible, the minimum heating power of the lower burner part 6 is set to be smaller than the minimum heating power of the upper burner part 5 . And, in order to suppress the heating of the soup juice receiving part 11 close to the lower floor burner part 6 and can prevent the overflowing soup juice from being burned dry in the soup juice receiving part 11, the maximum firepower of the lower floor burner part 6 is also set to burn more than the upper layer. The maximum firepower of device part 5 is smaller.

However, if the combustion flame of the lower burner part 6 and the combustion flame of the upper burner part 5 interfere with each other, combustibility will deteriorate. Therefore, in the present embodiment, the burner port 61 of the lower burner part 6 is opened in a direction inclined downward toward the inner side in the radial direction. As a result, the air-fuel mixture is jetted obliquely downward from the burner port 61 of the lower burner portion 6 . Therefore, the position of the combustion flame of the lower burner part 6 formed by burning the mixed gas can be shifted downward and away from the combustion flame of the upper burner part 5 . Therefore, mutual interference of the combustion flame of the lower burner part 6 and the combustion flame of the upper burner part 5 can be suppressed, and combustibility can be improved.

In addition, a gap 7 is provided between the upper burner part 5 and the lower burner part 6, and at least a part (in this embodiment, all) of the air passing through the gap 7 is supplied as secondary air for combustion from the The injection part of the mixed gas from the burner port 61 of the lower burner part 6 . Moreover, in this embodiment, the cylindrical secondary air guide 8 extended downward from the extended part 52a of the bottom wall part 52 of the upper burner part 5 is provided. Further, the secondary air guide 8 imparts a downward direction component to the flow of the secondary air for combustion supplied from the gap 7 toward the injection site of the mixed gas from the burner port 61 of the lower burner portion 6 . Thereby, the combustion flame of the lower burner part 6 is directed downward, and the mutual interference of the combustion flame of the lower burner part 6 and the combustion flame of the upper burner part 5 can be suppressed more reliably.

In addition, in the present embodiment, an extended portion 52a extending radially inward from the lower end of the burner 51 is provided on the inner peripheral portion of the bottom wall portion 52 of the upper burner portion 5 as described above. Thereby, downward expansion of the combustion flame of the upper burner part 5 can be suppressed, and it contributes to preventing the combustion flame of the lower burner part 6 and the combustion flame of the upper burner part 5 from interfering with each other.

As mentioned above, although embodiment of this invention was described referring drawings, this invention is not limited to this. For example, in the foregoing embodiment, the secondary air guide 8 is integrally formed on the bottom wall portion 52 of the upper burner part 5, but the secondary air guide 8 which is a separate body from the upper burner part 5 It may also be provided on the upper side of the lower burner part 6 . In addition, in the aforementioned embodiment, the bottom wall portion 52 of the upper burner portion 5 is made of sheet metal, but it may also be made of a cast product. In this case, an annular wall is erected on the outer side of the extended portion 52a of the bottom wall portion 52, and a groove serving as the burner 51 is formed on the annular wall, and is seated on the upper surface of the annular wall. A burner head 55 may also be provided.

1: Gas stove body 11: Soup receiver 2: top plate 21: Opening for burner 22: Burner ring 3: hob 31:Stove frame 32: grate claw 4: Burner for gas stove 5: Upper burner part 51: Crater 52: Bottom wall 52a: Extension 53: Peripheral wall 54: upper wall 55: Burner head 6: Lower burner part 61: Crater 62: Bottom wall 62a: flange part 62b: concave part 63: upper wall 63a: flange part 63b: concave part 7: Gap 8:Secondary air guide

[ Fig. 1 ] is a perspective view of a selected part of a gas stove equipped with a burner for a gas stove according to an embodiment of the present invention. [ Fig. 2 ] is a cross-sectional view taken along line II-II of Fig. 1 . [ Fig. 3 ] It is a cutaway plan view taken along line III-III in Fig. 2 . [ Fig. 4 ] It is a cutaway plan view taken along line IV-IV in Fig. 2 .

1: Gas stove body

2: top plate

3: hob

4: Burner for gas stove

5: Upper burner part

6: Lower burner part

7: Gap

8:Secondary air guide

11: Soup receiver

21: Opening for burner

22: Burner ring

31:Stove frame

32: grate claw

51: Crater

52: Bottom wall

52a: Extension

53: Peripheral wall

54: upper wall

55: Burner head

61: Crater

62: Bottom wall

62a: flange part

62b: concave part

63: upper wall

63a: flange part

63b: concave part

Claims (4)

A burner for a gas stove, which is equipped with an annular and hollow upper burner part, and an annular and hollow lower burner part arranged below the upper burner part and concentric with the upper burner part; it is characterized in that : The upper burner part and the lower burner part are composed of a plurality of burner internal flame burners that open radially inward on the inner peripheral part at intervals in the circumferential direction, and the burner of the lower burner part, It opens in a direction inclined downward toward the inner side of the radial direction. The burner for a gas stove according to claim 1, wherein a gap is provided between the upper burner part and the lower burner part, and at least part of the air passing through the gap is supplied as secondary air for combustion. To the ejection part of the mixed gas from the aforementioned burner port of the lower burner, and provided with: a secondary air guide for imparting the flow of the secondary air for combustion supplied from the aforementioned gap toward the ejection part of the mixed gas toward the downward direction direction component of . The burner for a gas stove as described in claim 1, wherein, on the inner peripheral portion of the bottom wall of the upper burner portion that covers the hollow portion of the upper burner portion from below, a lower burner portion than the upper burner portion is provided. The lower end of the aforementioned crater is an extension part that extends radially inward. A gas stove is equipped with a burner for a gas stove as described in any one of Claims 1 to 3.

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