JPH08100910A - Burner for gas cooking stove - Google Patents

Abstract

PURPOSE: To eliminate the clogging due to broth without increasing the cost. CONSTITUTION: The burner for a gas cooking stove comprises a trusslike burner body 2 having an opening 20 vertically passed through a center, a burner cap 3 having a cylinder 30 to be engaged with the opening 20 at a center, and a gas channel 6 and an ignition space provided between the upper surface of the body and the lower surface of the cap. The oblique surface 25 in which the inner peripheral side of the edge of the opening 20 is formed at the inner periphery of the body 2 is provided at the position disposed with an ignition plug at the outer periphery. Broth reaching the part does hot flow to the space side for ignition by the recess of the lower surface of the gap 3 and the oblique surface of the upper surface of the body 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a burner in a gas stove, and more particularly to a structure of a burner head portion.

[0002]

2. Description of the Related Art As shown in FIG. 2, there is a burner 1 for a gas stove including a burner body 2 to which a mixing tube 10 is connected and a burner cap 3 provided on the upper surface of the burner body 2. The burner main body 2 is provided with an opening 20 that opens up and down at the center thereof, and the burner cap 3 is provided with a tubular portion 30 that fits into the opening 20 at the central portion. The space is used for arranging a sensor 8 for detecting the temperature of the bottom of the pot and for introducing secondary air.
The flame holes 4 are formed between the peripheral upper surface of the burner body 2 and the peripheral lower surface of the burner cap 3. The air-fuel mixture of the gas supplied from the mixing tube 10 and the primary air, that is, the combustion gas, passes through the internal flow passage of the burner body 2 through the through hole 21 formed in the upper surface of the burner body 2 and the upper surface of the burner body 2 and the burner cap. 3 enters the gas flow path 6 between the lower surface and 3 and reaches the flame hole 4.

In the figure, reference numeral 70 is an ignition plug, and 71 is a thermocouple, which are passed through an opening 22 provided in a part of the burner main body 2 and formed on the lower surface of the outer peripheral portion of the burner cap 3. It is arranged in the space for use 7. Here, in the above-mentioned burner 1 whose central portion is opened vertically, when the spilled broth enters this central portion, travels inside the tubular portion 30 of the burner cap 3, and reaches the lower end of the tubular portion 30. A part of it reaches the portion of the gas flow path 6 by a capillary phenomenon from a minute gap between the outer surface of the tubular portion 30 and the inner peripheral surface of the opening 20 of the burner body 2, and this reaches the ignition space 7. The flame hole 75 and the suction flame hole 76 may be clogged.

For this reason, in the above-mentioned conventional example, FIG.
As shown in FIG. 3, the cylindrical portion 30 of the burner cap 3 has a length such that the lower end thereof protrudes to the lower side of the burner main body 2, and the inner peripheral edge of the lower end of the cylindrical portion 30 is sharpened to The broth was kept from rotating to the outer surface side of 30.

[0005]

However, if the tubular portion 30 has the above-mentioned structure, the forgeability of the burner cap 3 is deteriorated and the processing cost is increased. The present invention has been made in view of the above points, and an object of the present invention is to provide a burner for a stove that can eliminate the clogging due to broth without increasing the cost.

[0006]

DISCLOSURE OF THE INVENTION According to the present invention, however, a torus-shaped burner body having an opening vertically extending through a central portion thereof, and a tubular portion fitted to the opening portion at the center thereof and a peripheral portion thereof are provided. A burner cap provided with a flame hole, a gas passage and an ignition space are provided between an upper surface of the burner body and a lower surface of the burner cap, and an ignition plug is disposed in the ignition space. In the burner for the stove in which the combustion gas is supplied to the flame holes from the internal flow passage of the burner body through the gas flow passage, a portion of the lower surface of the burner cap facing the gas flow passage is formed as a recess, The portion on the inner peripheral side of the upper surface where the spark plug is located on the outer peripheral side is characterized in that the inner peripheral side, which is the edge of the opening, is an inclined surface that is lowered, and It has other features that a through hole for feeding the gas is formed from the inner flow path of the burner body to the ignition space or gas flow passage.

[0007]

According to the present invention, due to the concave portion on the lower surface of the burner cap and the inclined surface on the upper surface of the burner body, the broth that reaches this portion does not flow to the ignition space side.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the illustrated embodiments. This burner 1 for a stove comprises a burner body 2 made of sheet metal and a burner cap 3 arranged on the burner body 2. The burner body 2 is formed by combining two pressed metal plates 23 and 24 vertically and caulking the burner body 2 into a torus shape having an opening 20 vertically passing through the central portion thereof. In addition, the mixing tube 10 is integrally formed. The upper metal plate 23 of the burner body 2 has a torus-shaped portion with an inclined surface 25 whose inner peripheral side is lower toward the inner peripheral edge, and the inclined surface 25 has a plurality of through holes. 27 are formed at intervals in the circumferential direction. Further, the lower metal plate 24 is laminated on the lower surface of the upper metal plate 23 in the portion where the ignition plug 70 and the like are arranged, and the opening 22 is provided in this laminated portion.

On the other hand, the burner cap 3 has a cylindrical portion 30 in the central portion, and projections 33, which form the flame holes 4 between them, are projected on the outer peripheral portion on the lower surface side at intervals. An annular recess 34 is provided on the inner peripheral side of the lower surface. Further, an ignition space 7 is formed in a part of the outer peripheral side of the lower surface of the burner cap 3, and an ignition flame hole 44 that connects the ignition space 7 and the recess 34 is provided.

The burner cap 3 is placed on the burner body 2 and the tubular portion 30 is attached to the opening 2 of the burner body 2.
When fitted to 0, an annular gas passage 6 is formed between the lower surface of the burner cap 3 and the upper surface of the burner body 2 by the recess 34, and the combustion gas entering the interior of the burner body 2 from the mixing pipe 10 is formed. Enters the gas flow path 6 through the through hole 27 and flows from there to each flame hole 4. In addition, the gas flow path 6
A part of the combustion gas that has entered enters the ignition space 7 through the ignition flame holes 44.

In this burner 1, the lower end of the tubular portion 30 of the burner cap 3 is connected to the opening 20 of the burner body 2.
The lower end of the tubular portion 30 is placed on the caulked portions of the metal plates 23, 24 in the opening 20 without protruding further downward, and therefore the boiling liquid travels along the inner surface of the tubular portion 30 and the tubular portion When it reaches the lower end of 30, some of it may enter the portion of the gas flow path 6 through a minute gap between the outer surface of the cylindrical portion 30 and the inner surface of the opening 20 due to the capillary phenomenon. Is a recess 3 provided on the lower surface of the burner cap 3.
Since the burner cap 3 and the burner body 2 are not in contact with each other at this portion, and the inner peripheral portion of the upper surface of the burner body 2 is the inclined surface 25, the burner cap 3 enters the gas flow path 6. The simmered liquid does not clog the ignition flame hole 44 or adhere to the ignition plug 70.

In particular, in the illustrated example, since the through hole 27 is opened at the position where the spark plug 70 on the inclined surface 25 is located on the outer periphery, the boiling liquid may reach the ignition flame hole 44. There is no such thing.

[0013]

As described above, in the present invention, the recessed portion on the lower surface of the burner cap and the inclined surface on the upper surface of the burner body prevent the broth reaching this portion from flowing to the ignition space side. In addition, there is no clogging due to broth, and there is practically no increase in the cost for such a structure.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment.

FIG. 2 is a sectional view of a conventional example.

[Explanation of symbols]

 1 Burner 2 Burner body 3 Burner cap 6 Gas flow path 20 Opening 25 Sloping surface 30 Tube

Claims (2)

[Claims] 1. A torus-shaped burner main body having an opening vertically extending through a central portion thereof, and a burner cap having a cylindrical portion fitted at the central portion and a flame hole at a peripheral portion thereof. A gas flow path and an ignition space are provided between the burner body upper surface and the burner cap lower surface, and an ignition plug is disposed in the ignition space. A burner for a stove in which a combustion gas is supplied to the flame holes through a flow path,
A portion of the lower surface of the burner cap facing the gas passage is formed as a concave portion, and a portion of the burner body on which the spark plug is located on the inner peripheral side and the outer peripheral side has a lower inner peripheral side which is an edge of the opening. Burner for the stove, which is characterized by having an inclined surface. 2. The burner for a stove according to claim 1, wherein the inclined surface is provided with an opening for sending gas from an internal flow path of the burner body to an ignition space or a gas flow path.