JPH0534415U - Gas burner - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the ignitability at the time of ignition of a gas burner formed by bending a steel sheet that is symmetrically bulged around the combustion surface and joining the edges. [Structure] A plurality of slits crossing a combustion surface are closely arranged to form a slit group, the slit groups are arranged at a predetermined interval to form a combustion surface, and small holes are formed at the intervals. ..

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a gas burner used for household gas appliances such as a water heater and a bath kettle.

[0002]

[Prior Art]

 Conventionally, household gas appliances have a gas burner formed by bending a steel sheet that is symmetrically bulged around the combustion surface and joining the edges to form multiple gas burners, depending on the capabilities of the appliance. It is generally configured to be side by side to form the combustion section.

Recently, in order to increase the load of the burner, a means for forming a combustion surface by arranging a large number of slit flame holes crossing the combustion surface is widely used. In addition, a plurality of such slits are arranged close to each other to form a slit group, and the slit groups are arranged at a predetermined interval to form a combustion surface. Gas burners with improved combustibility have been used in consideration of sufficient supply of air to the flame.

[0004]

[Problems to be solved by the device]

 However, when the slits are arranged at a predetermined interval to form a combustion surface, if the intervals between the slits are small, the adjacent flames formed for each slit will be connected and the secondary air will diffuse. , The supply will be impaired. On the other hand, if the interval between the slit groups is set to a large value, the transfer of gas to the gas discharged from each slit group will be impaired, and in the worst case, there is a danger that raw gas will be discharged from the slit without being able to ignite. is there. In such a gas burner, which is inferior in ignitability, the gas discharged from the slit at the beginning of ignition is so lean that it cannot be ignited, and explosive ignition occurs after a certain period of time, so it cannot be used safely. In particular, gas appliances have various types such as the type of gas used, the gas pressure, the size of the appliance, and the condition of use, so it is difficult to satisfy all of these conditions and set an appropriate interval between the slit groups. It was

The present invention is intended to solve these problems, and ensures that the gas discharged to each slit group is transferred to the gas, has excellent ignitability, and can be used under various conditions. The purpose of the present invention is to provide a gas burner that can be used safely.

[0006]

[Means for Solving the Problems]

 In order to achieve these objects, the present invention proposes a gas burner formed by bending a steel sheet that is symmetrically swelled around a combustion surface and joining edges to form a plurality of slits that cross the combustion surface. It is characterized in that individual slits are arranged in close proximity to each other to form slit groups, the slit groups are arranged at a predetermined interval to form a combustion surface, and small holes are opened at the intervals.

[0007]

[Action]

 In the gas burner configured as described above, the gas is discharged from the slits and a small amount of gas is also discharged from the small holes.Therefore, at the time of ignition, the ignition transfer is smoothly carried out for each adjacent slit group. Independently, each slit group forms an independent flame and burns.

[0008]

【Example】

 Examples of the drawings will be specifically described below. The gas burner (1) is manufactured by a general means of bending a steel plate that is symmetrically bulged around the combustion surface (2) and joining the edges, and the gas burner (1) is a tool. According to the ability of the above, a plurality of bodies are arranged to form the combustion part of the gas appliance. The gas burner (1) has an opening (3) for sucking gas and primary air formed in the front surface thereof, and a mixing pipe section (4) for mixing the gas and primary air sucked from the opening (3). ) Is formed, and the combustion surface (2) is formed on the upper end surface of the mixing pipe section (4).

A slit (11) is formed on the combustion surface (2) so as to cross the combustion surface (2), and a plurality of slits (11) (four in the illustrated example) are arranged in close proximity to each other to form a slit group ( 12) has been formed. Then, the combustion surface (2) is formed by arranging the slit groups (12) at a predetermined interval. A small hole (13) is formed at a substantially intermediate position in the space between the adjacent slit groups (12). The shape of the small hole (13) can be arbitrarily set such as a circle, a rectangle, and a small slit. Flame holding plates (5) are attached to the left and right sidewalls rising from the mixing pipe portion (4) to the combustion surface (2), and the upper end of the flame holding plate (5) is located at a position slightly lower than the combustion surface (2). And the lower end is bent outward to form the shield (6).

In the gas burner (1) shown in the drawing, the gas sucked from the opening (3) and the primary air are mixed in the mixing pipe portion (4) and discharged from each slit (11). When ignited by the known ignition means, a small amount of gas is also discharged from the small holes (13), so that the fire transfer of each slit group (12) is smoothly carried out through the small holes (13), and the lit slits are ignited. The slit group (12) is ignited sequentially from the group (12). Then, an independent flame is formed and burned for each slit group (12). Here, the influence of the upward flow of the secondary air along the side wall of the gas burner (1) is moderated by the shielding part (6) of the flame holding plate (5), and the lift of the flame is prevented.

[0011]

[Effect of the device]

 The characteristic effects of this invention are as follows. The slit group (12) is arranged at a predetermined interval to form the combustion surface (2), and the small hole (13) is opened at the interval, so that a small amount of gas is discharged from the small hole (13). Is discharged, and by interposing this, it is possible to reliably transfer the fire to the discharged gas for each of the adjacent slit groups (12). Therefore, under a variety of conditions such as the type of gas used, the gas pressure, the size of the equipment, and the state of use, it is possible to prevent discharge of raw gas and explosion ignition due to poor ignition, and to use safely. As a result, it is permissible to set a large gap between the adjacent slit groups (12), and each slit group (12) forms and burns a flame completely independently and promotes the diffusion of secondary air. Therefore, sufficient secondary air can be supplied to the flame to improve the combustibility.

Further, the small holes (13) can be formed at the same time when the slits (11) are opened, and there is a practical effect that the process is not particularly complicated and can be manufactured at low cost. Of.

[Brief description of drawings]

FIG. 1 is a perspective view of a cut main part of a gas burner of the present invention.

FIG. 2 is a plan view of the gas burner of the present invention.

[Figure 3] Similarly, a front view

[Explanation of symbols]

 1 Gas Burner 2 Combustion Surface 11 Slit 12 Slit Group 13 Small Hole

Claims (1)

[Scope of utility model registration request] 1. In a gas burner formed by bending a steel sheet symmetrically bulging around a combustion surface and joining edges, a plurality of slits crossing the combustion surface are arranged in close proximity to each other. The gas burner is characterized in that a plurality of slits are formed, the slits are arranged at a predetermined interval to form a combustion surface, and small holes are opened at the intervals.