JPH02203114A - Burning device - Google Patents

Abstract

PURPOSE:To provide a positive flame transfer by a method wherein a pilot burner for performing a flame transfer adjacent to an upper burner and a lower burner forming a continuous combustion surface is provided, the lower burner is formed with an air blowing passage and a combustion secondary air is supplied to the pilot burner. CONSTITUTION:An air blowing device 11 is integrally fitted to a lower burner 8 and formed with it so as to constitute a burner unit 12. At a central part of a flow branch part 114 of an air pipe 112 is formed an air blowing part 116 for supplying a combustion secondary air to a pilot burner 18. An upper burner 7 and a lower burner 8 are formed such that each of a pair of right and left burners is formed by a continuous combustion surface and a pilot burner 18 having a flame rod 20 is adjacent to the combustion surface, so that a positive flame transfer can be attained. Since the secondary combustion sir for the pilot burner 18 is supplied from an air blowing part 116, the combustion is not influenced by the exhaust gas ignited at a flame transfer hole 84 of the lower burner 8 and there is no bad combustion state.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an improvement of a pilot burner of a gas heating cooker or the like using a burner device.

BACKGROUND OF THE INVENTION Conventionally, the pilot burner of this type of burner device has a first
As shown in Fig. 2, the upper burner 7 and the lower burner 8 are composed of a pair of left and right burners.
An ignition unit 7u consisting of a spark plug 7c, a pilot burner 7d, and an ignition detector 7e is attached to each of a pair of left and right sides.

In addition, 7f is the exhaust port, 7g and 8g are the upper and lower burners 7.8
This is the gas supply pipe to.

Problem to be Solved by the Invention However, in the above configuration, the upper and lower burners 7.8 are attached only to one side of the left and right pair, and the ignition of the left and right pair of burners depends on the length of the flame of the pilot burner 7d. It is possible to ignite the fire at the same time, but once the ignition is confirmed, it will be extinguished.
If the burners 7a and 8a on the side where the ignition detector 7e is not installed blow out during combustion, the burner 7 on the side where the ignition detector 7e is installed
Raw gas is released from b and 8b without ignition, creating a dangerous situation. Furthermore, since a plurality of ignition units 7u are installed, the configuration becomes complicated and the cost increases.

The present invention solves these conventional problems, and provides a burner device that maintains stable and good combustion in the pilot burner, reliably transfers flame with a simple configuration, and has excellent safety without releasing raw gas. This is the primary purpose.

The second purpose is to further stabilize combustion in the pilot burner for flame transfer.

Means for Solving the Problems In order to achieve the above-mentioned first object, the present invention provides a pilot burner that faces the upper and lower burners that form a continuous combustion surface and performs flame transfer. A blowing path is formed, and secondary air for combustion is supplied from the blower toward the pilot burner from the air blowing section.

Furthermore, in order to achieve the second object, an air guide body is disposed to cover the air blowing part of the lower burner to supply air.

According to the above-described structure, the present invention forms a pair of left and right burners, each of the upper and lower burners, with a continuous combustion surface, and allows the pilot burner to transfer the flame, thereby increasing safety by preventing generation of raw gas due to extinguishing. Even if the pilot burner is arranged above the lower burner, the secondary combustion air of the pilot burner is blown from the air blowing part of the lower burner, so that good combustion can be provided.

Furthermore, the air guide body covering the air blowing part of the lower burner lowers the air flow velocity and allows secondary air to be evenly supplied to the pilot burner, making it possible to provide a more stable flame.

EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 to 11. This is an application of the present invention to a heating cooker, where l is a heating chamber formed by a grill case 2;
There is a grill 4 on which the food to be cooked 3 is placed in the upper and lower center of the heating chamber 1, the front part of the heating chamber 1 can be opened and closed with a door 5, and the upper part of the rear part is an exhaust port 6.

An upper burner 7 is installed on the ceiling of the heating chamber 1, and lower burners 8 are installed on both sides of the lower part, and these burners heat both the upper and lower surfaces of the food to be cooked 3.

Reference numeral 9 is a saucepan for receiving oil, juice, etc. falling from the food to be cooked 3, and water IO is placed therein.

A blower device 11 is integrally fitted and formed in the lower burner 8 to form a burner unit 2, which is shown in FIGS. 3, 4, 5, and 6.
Figures, Figures 7(a) to (C), Figures 8(a) to (C)
The detailed structure is shown in FIG.
The burner body 13 is composed of a blower body 14 in which the burner body 13 and the blower body 14 are arranged in one row or in a plurality of rows, and a partition wall 15 that partitions the burner body 13 and the blower body 14. These burner body 13, blower body 14, and partition wall 15 are approximately H.
The burner tube 82 is formed into a substantially H-shape by the burner body 13 and the partition wall 15, through which fuel and primary air flows, and a gas inlet and gas suction are provided at both ends of the burner tube 82 from one side. A gas supply section 83 having a mixing tube section for mixing with primary air, a flame transfer flame hole section 84 provided at a burner tube 82° branched in the center, and heating flame hole sections 85 on both sides are provided. The flame transfer flame hole portion 84 and the heating flame hole portion 85 form a continuous combustion surface. Further, a tubular portion formed in a substantially U-shape by the blower body 14 and the partition wall 15 is used as an air pipe 112 through which air flows, and in the center of this air pipe 112 there is an air port 113 connected to the blower 16 and a branch part to both sides. An air ejection part 115 having air ejection holes 111 on both sides is provided. Furthermore, the burner body 13, the blower body 14, and the partition wall 15 are integrally fitted and formed by caulking or welding. Note that the burner tube 82 and the air tube 112 are separated by the partition wall 15 and form independent passages.

Reference numeral 17 denotes a wind direction control body (not shown in FIG. 3) attached to the blower 14, which regulates the wind direction with respect to the flame of the lower burner 8 to ensure that the heat flow reaches a long distance. .

Furthermore, an air blowing section 116 is formed in the center of the air pipe 1120 branch section 114 to supply secondary air for combustion to the pilot burner 18 . 19 is an air guide body, which is an air blowing part 11 formed in the air pipe 112 of the lower burner 8.
6 and has a flange 191 that collides with the air ejected from the air ejection part 116 to reduce the flow velocity, and an opening 192 that supplies air toward the pilot burner 18 with a natural flow that reduces the flow velocity. ing.

The upper burner 7 is shown in FIGS. 5, 9(a), (b), (C
) As shown in D, the lower burner plate 71 has an open lower 2 and a gas lower 3 formed in a 0-shape that serve as the combustion surface, and a combustion chamber made of a wire mesh, a ceramic perforated plate, etc. is placed so as to cover the open lower 2. A plate 74 is attached to form a flame hole 75. 76 is a burner upper plate and has a burner pipe 78 that communicates with the gas man lower plate 7 and the combustion plate 74. This burner lower plate 71 and burner upper board 76 are fixed together, and the gas man lower plate 3. A combustion plate 74 and a burner tube 78 form a flame hole 75 to create a continuous combustion surface.

The pilot burner 18 includes burners 1181 to 1181 as shown in FIGS. 5, 6, 7, and 10(a) to (e).
183, and the burner plate 181 has a gas pipe 1 extending from the gas mixing pipe 184 to the upper and lower burners 7.8.
85 and a local flame hole 186 for the flame ion current detector 20 (hereinafter referred to as a flame rod) and for flame transfer, and a large number of gas holes 187 are formed in the burner plate 182 corresponding to the gas pipes 185, The ejected gas collides with the burner l11B3 to reduce the flow velocity, forming a flame transfer hole 188 on one outer circumferential side of the burner plate 183 to create a stable flame transfer. 189 is a mounting plate for Pyrositovarna 18,
21 is a spark plug. Incidentally, the burner I 181, the burner I 1B2, and the burner Fi 183 are integrally formed by caulking and welding.

Next, FIG. 11 is a system diagram showing the configuration of a gas heating cooker according to an embodiment of the present invention. The heating flame hole part 85 of 8 and the flame hole 81 of the flame transfer flame hole part 84 form a continuous combustion surface, and the upper burner 7 also forms a continuous combustion surface with the flame hole 75, and these upper and lower burners A pair of left and right burners of 7.8 are configured to allow flame transfer. A pilot burner 18 faces the combustion surface of the upper burner 7 and lower burner 8 and is ignited. The pilot burner 18 is equipped with a flame rod 20 and an ignition plug 21 to check whether there is ignition, and the air blower 113 of the blower 11 is connected to the blower 16.
The upper, lower, and pilot burners 7.8.18 are equipped with solenoid valves that open and close the gas, and the gas is supplied from the original solenoid valve 22 to the solenoid valves 221 and 222 corresponding to each burner.
．． It is supplied from the gas line 23 via 223.

Further, reference numeral 24 denotes an operating section which controls upper and lower burners 7.
No possibility to select and set heating according to 8 in advance, 25
is input from the operating section 24 and frame rod 20 in the control section, and is output to the respective electromagnetic valves 22, 221, 222, and 223 and the blower 16 to control the gas heating cooker. Note that 26 is a power source. 27 is a rear mounting plate provided on the main body.

In the above configuration, the upper burner 7 and the lower burner 8 are ignited, and the flame from the air blower 16 is directed from the air blowing hole 111 of the blower device 11 to the lower burner 8, and has a horizontal or downward vector component. An air stream is ejected and the heat stream reaches the lower center of the grill m4, heating the entire surface with uniform heat distribution.At this time, the radiant heat from the combustion of the upper burner 7 simultaneously heats both the upper and lower surfaces of the food to be cooked 3. Even in the ultra-wide heating chamber 1, quick and even cooking can be achieved.

In addition, by regulating the wind direction with a wind direction control body 17 near the blower 11, and by controlling the amount of air blown by the blower 11 and sequentially moving the strong heating parts, it is possible to make the heat distribution uniform and to heat the sardines in the heating chamber l. It becomes wider, and even more cooking effects can be obtained.

Furthermore, since both the upper burner 7 and the lower burner 8 each form a pair of left and right burners with continuous combustion surfaces and face the pilot burner 18 equipped with the flame rod 20, it is possible to reliably transfer the flame. , heating can be performed using the burner selected with the operation unit 24, and there is no risk of raw gas leaking due to the burner turning off.

At the same time, since secondary air for combustion in the pilot burner 18 is supplied from the air blowing part 116 of the branch part 114 of the air pipe 112, the gas mixing pipe of the pilot burner 18
By using both the primary air and the primary air sucked in by the lower burner 8, a stable and good combustion flame can be formed without being affected by the exhaust gas combusted in the flame transfer hole part 84 of the lower burner 8. . Therefore, the flame can reliably transfer to the upper and lower burners 7.8, and the ignition detection output of the flame rod 20 is also good, so that ignition detection can be performed with high accuracy.

Effects of the Invention As described above, the gas heating cooker using the burner device of the present invention provides the following effects.

(1) The width of the heating chamber can be made extremely wide, and the lower part of the grill can be heated with uniform heat distribution, resulting in good cooking performance without uneven cooking. In addition, since the upper and lower burners heat the food with even heat distribution from both sides, there is no uneven heating unlike conventional methods, so there is no need to turn the food over during cooking, and the cooking time can be shortened.

(2) The pilot burner can reliably transfer the flame to the upper and lower burners, and there is no risk of raw gas leaking due to extinguishing as in the conventional case, making it highly safe. Moreover, the ignition units for the upper and lower burners have a simple structure with a minimum ratio. It is also easy to manufacture.

Furthermore, since secondary combustion air is supplied from the lower burner to the pilot burner, a stable and good combustion flame can be formed. Therefore, the flame can reliably transfer to the upper and lower burners, and the ignition detection output of the flame rod can also be stably reliable.

(3) Since the air blowing part of the lower burner is covered with an air guide body, the air flow velocity is reduced and combustion air can be blown to the pilot burner in a natural flow, so that a more stable flame can be formed.

[Brief explanation of the drawing]

Fig. 1 is a front longitudinal cross-sectional view of an embodiment of the present invention applied to a gas heating cooker, Fig. 2 is a side longitudinal cross-sectional view of Fig. 1, and Fig. 3 is a perspective view of the burner unit of the lower burner in the present invention. Figure 4 is a perspective view of the air guide body attached to the burner unit, Figure 5 is a partially sectional front view showing the mounting relationship between the upper and lower burners and the pilot burner, and Figure 6 is the lower burner and the pilot burner. FIG. 7 is a detailed view of the lower burner; (a) is a plan view showing the main parts; (b) is a front view of (a); C) is a side view of the cross section of (8), Fig. 8 is a plan view of each part of the lower burner, Fig. 9 is a plan view of each part of the upper burner, Fig. 10 is a detailed view of the pilot burner, and (a) is the front view. , (b) is a side view of (a), (C) is a back view of (a), (d) is a sectional view taken along line AA' of (a), and (e) is a cross-sectional view of (C).
) B-8' cross-sectional view of Fig. 11, side 7... upper burner, 8... of the gas heating cooker in Fig. 3
・Lower burner, 11... Air blower, 16...
...Blower, 18...Pilot burner, 1
9... Air guide body, 75... Flame hole,
84... Flame transfer flame hole portion, 85... Heating flame hole portion, 112... Air pipe (air blowing path), 116
...Air blowing section. Name of agent Patent attorney Shigetaka Awano (1 person)

Claims (2)

[Claims] (1) A lower burner that forms a continuous combustion surface with a heating flame hole and a flame transfer flame hole, an upper burner that has continuous flame holes that form a continuous combustion surface, and an upper burner disposed above the lower burner. a pilot burner for performing flame transfer, which is installed to face the combustion surface of the upper and lower burners, a blower for blowing air to the lower burner, and an air passage is formed in the lower burner,
A burner device comprising an air blowing part that supplies air from a part thereof, and supplies secondary air for combustion to the pilot burner from the air blowing part. (2) A burner device in which an air guide body is disposed in the air blowing part of the lower burner so as to cover the air blowing part, and the air flow velocity is reduced to supply the air to the pilot burner to obtain stable combustion.