JPH10339412A - Gas cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent thermal deformation and distortion by a method wherein a burner part having a mixing tube and a flame hole and a grill burner having a combustion surface with a radiating plate part which is heated by the burner part to radiate infrared rays are installed on a box part having an exhaust part and conical surfaces are successively connected together onto the combustion surface with the radiating late part. SOLUTION: A grill plate 3 having a grill 2 on which a material 1 to be cooked is placed is housed into a box body 5 having an exhaust part 4 at a rear end part thereof and an opening part 6 is formed at the box body 5. A plane integrated with a burner part 8 in which tiny holes are made in a stainless sheet or the like by punching to arrange burner ports 7 is drawn on a square pole to form a pyramid having conical surfaces. The pyramid is formed in multiple layers to make refraction parts at the radiation plate part 9 and at the burner part 8 thereby forming a combustion surfer 10. A bottom side of the pyramid 15 formed on the combustion surface 10 makes a reinforcing beam passing through the burner part 8 which jets out a flame to raise the temperature thereof thereby preventing a thermal deformation of the burner ports 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas cooker having a built-in grill burner for grilling fish and the like.

[0002]

2. Description of the Related Art Conventionally, a grill burner of this type is known from Japanese Patent Application Laid-Open No. 8-54107.

FIGS. 7 and 8 show the structure of a conventional grill burner. In a grill portion 30 for grilling fish of a gas cooker, a burner portion 31 and a radiating plate portion 32 for radiating infrared rays are provided on the upper surface in the refrigerator. The radiation plate 32 is heated by the flame from the burner 31, so that the object to be cooked is irradiated with infrared rays from the radiation plate 32 and cooked. The burner portion 31 and the radiation plate portion 32 are integrated, and a punching hole that becomes a flame hole is formed in a part of the steel plate to form a combustion surface 33 with a radiation plate.

Further, an enamel layer is formed on the burning surface 33 for the purpose of radiating infrared rays and for the purpose of improving corrosion resistance, or an aluminum-plated steel plate is used. The burning surface 33 is not flat but has a burning surface. Is formed by a quadrangular pyramid that is inclined at a gentler gradient than the central part 34 of the object, maintains the strength of the burner, prevents thermal deformation, and makes the radiation plate part 32 oblique to broaden the irradiation range of infrared rays. Was cooking.

[0005] In recent years, it has been desired to increase the size and height of the inside of a grill burner in order to improve the usability such that a large-sized fish can be cooked in a grill burner of this kind without cutting and that a large number of fish can be cooked simultaneously. ing.
In order to widen the interior of the grill and increase the baking area of the object to be cooked, it is necessary to increase the range of infrared radiation, that is, to increase the combustion surface 33 of the burner. In order to obtain the baking time, it is necessary to increase the calorie consumption of gas.

The conventional grill burner forms a flame downward and heats the burner portion 31 itself and the radiation plate portion 32 by the flame of the burner portion 31 formed by a large number of flame holes. The temperature of 31 is 650 ° C to 700 ° C
Has been reached.

[0007]

Normally, the flame holes are arranged in alignment with the end of the combustion surface 33 in order to obtain a predetermined burning area. When the size of the burner is also increased, the burner itself tends to be distorted, the number of the large number of flame holes increases to increase the burning area, and the high temperature portion in the combustion surface 33 increases, so that the burner is weak against thermal deformation. Become.

Further, as the number of the large number of flame holes increases, the strength of the combustion surface 33 itself becomes weak, and it becomes difficult to maintain the flatness, and the burner portion 31 formed with the large number of flame holes is deformed. And the width of thermal expansion and contraction at the time of ignition and extinguishing of the grill burner increases with an increase in the number of flame holes, so that there is a problem that cracks may be generated in the combustion surface 33 due to stress concentration or distortion noise may be generated. .

Further, if the calorie consumption of the gas is increased in order to obtain a predetermined baking time when the inside of the grill is raised, the temperature of the combustion surface 33 rises, and the same problem as described above may occur. there were.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems, and to provide a grill burner having a wide infrared irradiation range without generating thermal deformation, distortion, cracks and distortion noise even when a combustion surface is enlarged. The purpose is to:

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a box having an exhaust portion, a mixing tube, a burner having a large number of flame holes, and an infrared ray heated by the burner. A grill burner provided with a combustion surface with a radiating plate that emits light is installed, and a plurality of conical surfaces are connected to the burning surface with a radiation plate in a convex manner.

[0012] According to the above invention, the bottom surface of the conical surface of each layer serves as a reinforcing beam portion, and it is possible to prevent the burner portion and the radiation plate portion formed by a large number of flame holes from being deformed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be carried out in the form described in each claim. As described in claim 1, a box having an exhaust portion has a mixing pipe and a large number of flame holes. A grill burner having a burner portion and a combustion surface with a radiation plate portion that emits infrared rays heated by the burner portion is installed, and the combustion surface with the radiation plate portion is formed by connecting a plurality of conical surfaces in a convex shape. By doing so, the bottom surface of the conical surface of each layer becomes a reinforcing beam portion, and it is possible to prevent deformation of the burner portion and the radiation plate portion formed by a large number of flame holes.

Further, since the combustion surface is formed by dividing the combustion surface into a plurality of symmetrical ones in the vertical and horizontal directions, the combustion surface is formed by a large number of cones, so that one cone is formed small. Thus, the bottom surface of each pyramid serves as a reinforcing beam portion, which can prevent deformation of the burner portion and the radiation plate portion formed by a large number of flame holes.

Further, by providing a plurality of concave and convex portions on a burner portion having a large number of flame holes and a burner portion of a combustion surface with a radiation plate for emitting infrared rays.
Since the stress can be dispersed at any place so that the thermal stress is not concentrated at one place by the plurality of uneven portions, the strain of many flame holes can be absorbed.

Further, the burner portion having a large number of flame holes and the burner portion of the combustion surface with a radiation plate for radiating infrared rays are divided and formed, so that the burner portion is divided. As a result, the burner surface temperature can be locally reduced, and the portion where no flame hole is formed has increased strength, so that the burner portion having many flame holes and the radiation plate portion can be prevented from being deformed.

An embodiment of the gas cooker according to the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 shows a grill burner of a gas cooker according to Embodiment 1 of the present invention.
Is placed in a box 5 having an exhaust portion 4 at the rear end, and an opening 6 is provided in the box 5.
Is formed. A large number of small holes of about 0.6 mm were punched into a thin stainless steel plate or the like to form a flame hole 7 as shown in FIG.
The plane in which the burner part 8 and the radiation plate part 9 in which are arranged is integrated is squeezed into a quadrangular prism, a quadrangular pyramid having a conical surface is formed thereon, and the pyramid is formed in a multilayer. Part 9
The burner portion 8 is formed with a multi-stage bent portion to form the combustion surface 10.

Further, the combustion surface 10 is press-formed on a metal plate to press-mold a burner body 12 which integrally forms a concave portion serving as a mixing tube 11, and a peripheral portion thereof is brought into close contact engagement by caulking to form the mixing tube 11. Several caulking holes in the vicinity 1
3 engages the burner main body 12 to form a thin box-shaped grill burner.

Gas is sealed by the peripheral edge of the burner body 12 and the caulking hole 13, combustion gas is supplied from the inlet of the mixing tube 11, and the cooking product 1 is installed in the opening 6 by screws or the like.
Is cooked.

In FIG. 2, the radiation plate 9 is gently inclined from the center of the quadrangular pyramid to form the first quadrangular pyramid 14,
A part of the second quadrangular pyramid 15 from the four sides of the bottom of the first quadrangular pyramid 14 is formed. The second quadrangular pyramid 15
A part of the third pyramid 16 from the four sides at the bottom of is formed. The bottom of the second quadrangular pyramid 15 passes through the flame hole 7.

Although three pyramids have been described here, the same applies when a quadrangular pyramid is formed in multiple stages or a cone having a cone surface or a hexagonal pyramid instead of a quadrangular pyramid is divided and refracted in multiple stages. It is.

Next, the operation will be described. The bottom of the second quadrangular pyramid 15 formed on the combustion surface 10 passes through the burner section 8 which emits a flame and rises in temperature, thereby becoming a reinforcing beam, thereby preventing thermal deformation of the flame hole 7. it can.

Further, since there are many bent portions at each stage, stress concentration due to thermal expansion and contraction can be dispersed. Further, the radiation plate portion 9 is formed at a different angle for each layer.

(Embodiment 2) FIG. 3 is a perspective view of a combustion surface of a gas cooker according to Embodiment 2 of the present invention. In FIG. 3, a burner 8a having a flame hole 7a of about 0.6 mm is arranged on a combustion surface 10a.

Then, four quadrangular pyramids whose radiation plate portions 9a are gently inclined from the central portion are arranged, and a straight beam 17 is provided in a cross between the quadrangular pyramids. Note that the quadrangular pyramid here is also the same with a pyramid having a conical surface such as a cone or a hexagonal pyramid.

Next, the operation will be described. By the base 18 of the quadrangular pyramid formed on the combustion surface 10a and the straight beam 17 separating each quadrangular pyramid, a skeleton can be formed on the front, rear, left and right of the combustion surface 10a, and thermal deformation can be prevented.

Further, since the area of the same combustion surface 10a is formed by a large number of square pyramids, one square pyramid can be formed small. That is, one side or base 18 of the pyramid
Can be shortened. Furthermore, the radiation plate portions 9a face different directions in the plurality of quadrangular pyramids, respectively.

(Embodiment 3) FIG. 4 is a perspective view of a combustion surface of a cooking device according to Embodiment 3 of the present invention. In FIG. 4, a burner portion 8b having a flame hole 7b of about 0.6 mm is arranged on a combustion surface 10b. Then, in the longitudinal direction of the burner portion 8b in which the large number of flame holes 7b are arranged, two concave portions 23 each having a long hole having a depth of about 2 mm are formed in a downward direction where the flame is not ejected. The shape of the concave portion 23 is formed to be hemispherical.

The position of the concave portion 23 is designated by the burner portion 8b in which a large number of flame holes 7b are arranged.
The same effect can be obtained by arranging also in the central portion where is not arranged, that is, the radiation plate portion 9b.
By changing the size and quantity, it can be arranged in any size and shape.

(Embodiment 4) FIG. 5 is a perspective view of a combustion surface of a cooker according to Embodiment 4 of the present invention. FIG. 6 is a sectional view of a grill burner of a cooker according to Embodiment 4 of the present invention.

5 and 6, the mixed gas introduced from the mixing pipe 11 enters a grill burner constituted by a combustion surface 10C and a burner body 12, and has a plurality of flame holes 7C arranged on the combustion surface 10C. It is ejected from the portion 8C.

The radiant plate 9C of the combustion surface 10C is heated by the external flame 24 formed by the ejected gas, and
, The combustion exhaust gas of the external flame 24 from many flame holes 7C is guided to the exhaust part 4.

As a result, the temperature of the combustion surface 10C is higher on the exhaust portion 4 side (upper side in the figure) in which the combustion exhaust gas flows, and the temperature of the exhaust portion 4 side of the burner portion 8C is also higher.
Here, in the present invention, a flame hole 7C of about 0.6 mm is arranged on the burner portion 8C.

The flat portion 2 on which the flame holes 7C are not formed on the exhaust portion 4 side of the burner portion 8C in which a large number of flame holes 7C are arranged.
5 is provided. The same effect can be obtained by providing a plurality of flat portions 25 where the flame holes 7C are not formed, not only on the exhaust portion 4 side.

Further, a burner portion 8d is arranged on the radiation plate portion 9C so that the flow of the combustion gas also acts on the center of the food 1,
The heat distribution of the radiation plate portion 9C with the infrared radiation heat is variously designed.

[0036]

As described above, according to the present invention, the following advantageous effects can be obtained.

(1) According to the first aspect, by forming the combustion surface by connecting a plurality of conical surfaces in a convex shape, the strength of the burner portion and the radiation plate portion formed by a large number of flame holes is reduced. Even if the combustion surface is enlarged with the increase in the volume of the inside of the grill, or even if the calorie consumption of gas is increased, the deformation, distortion and distortion noise of the combustion surface due to thermal deformation can be prevented, and the volume of the inside of the grill can be increased.

Further, since there are many bent portions on the combustion surface, stress concentration due to thermal expansion and contraction can be dispersed, and cracks and cracks on the combustion surface can be prevented. Further, since a plurality of radiation plates having different angles can be formed, the irradiation range of infrared rays can be expanded without unevenness, and even when the inside of the grill storage is enlarged, unevenness of grilled food can be reduced.

(2) According to the second aspect, the combustion surface according to the first aspect is formed by dividing the combustion surface into a plurality of symmetrical ones in the vertical and horizontal directions, thereby forming a skeleton in front, rear, left and right of the combustion surface to prevent thermal deformation. Can be. Also, since the same combustion surface area is formed by a large number of conical surfaces, it is possible to form one conical surface small, that is, since each side of the conical surface can be shortened, thermal deformation and distortion, The generation of distortion noise can be prevented.

Further, since the radiation plate portions are directed to different directions on each of the plurality of conical surfaces, the irradiation range of infrared rays can be expanded, and even if the inside of the grill storage is enlarged, uneven grilling of the cooked food is reduced. be able to.

(3) According to the third aspect of the present invention, since the burner portion in which a large number of flame holes of the combustion portion are arranged is provided with an uneven portion, the portion expanded by thermal expansion of the burner portion heated to a high temperature. Thus, thermal deformation and distortion of the combustion surface can be absorbed to prevent distortion noise, and cracks and cracks in the combustion surface due to thermal expansion and contraction can be prevented.

(4) According to the fourth aspect, the burner portion is divided to form a flat portion which does not form a large number of flame holes, thereby increasing the strength of the continuous flame holes. This can prevent thermal deformation, distortion and distortion noise of the combustion surface, and can prevent cracks and cracks in the combustion surface due to thermal expansion and contraction. In addition, stable combustion can be obtained when a flat portion where no flame hole is formed serves as a passage for combustion exhaust gas. Further, by alternately arranging the burner portions and the radiation plate portions, it is possible to design variously mixing the combustion gas of the burner portion and the heating of the radiation plate portion by the radiant heat.

[Brief description of the drawings]

FIG. 1A is an exploded perspective view of a grill burner of a gas cooker according to a first embodiment of the present invention. FIG.

FIG. 2 is a perspective view of a combustion surface of the embodiment.

3 is a perspective view of a combustion surface of a gas cooker according to a second embodiment of the present invention. FIG.

FIG. 4A is a perspective view of a combustion surface of a gas cooker according to a third embodiment of the present invention.

FIG. 5 is a perspective view of a combustion surface of a gas cooker according to a fourth embodiment of the present invention.

FIG. 6 is a sectional view of the grill burner of the embodiment.

FIG. 7 is an exploded perspective view of a conventional gas cooker.

8 is a perspective view of a combustion surface of a grill burner of a conventional gas cooker.

[Explanation of symbols]

 4 Exhaust part 5 Box 7, 7a, 7b, 7C Flame hole 8, 8a, 8b, 8C, 8d Burner part 9, 9a, 9b, 9C Radiant plate part 10, 10a, 10b, 10C Combustion surface 11 Mixing pipe 14 One 15th quadrangular pyramid 15 2nd quadrangular pyramid 16 3rd quadrangular pyramid 17 beam 18 base 23 concave 25 flat

Claims (4)

[Claims] 1. A grill burner comprising: a box having an exhaust portion; a mixing tube; a burner having a plurality of flame holes; and a combustion surface having a radiation plate portion which is heated by the burner and emits infrared rays. A gas cooker which is installed, and wherein the combustion surface with the radiation plate portion is formed by connecting a plurality of conical surfaces in a convex manner. 2. A gas cooker according to claim 1, wherein the combustion surface is divided into a plurality of symmetrically vertical and horizontal planes. 3. A grill burner including a mixing tube, a burner having a large number of flame holes, and a combustion surface with a radiation plate heated by the burner and radiating infrared rays is installed in a box having an exhaust portion. A gas cooker, wherein a plurality of uneven portions are provided on the burner portion. 4. A grill burner including a mixing tube, a burner having a large number of flame holes, and a combustion surface with a radiation plate which is heated by the burner and emits infrared rays is installed in a box having an exhaust portion. And a gas cooker formed by dividing the burner portion.