JPH08135930A - Infrared burner and roasting cooker using it - Google Patents

Abstract

PURPOSE: To ensure an infrared burner capable of securing a wider variable combustion amount range and obtain a roasting cooker having excellent cooking performance using the burner. CONSTITUTION: A first recess 5 and a first projection 6 are alternately formed in and on a combustion surface of a ceramic combustion panel 4, and a second recess 8 deeper than the first recess 5 is provided in a flame hole arrangement part 7 located at a peripheral end of the panel 4. With the construction, combustion heat at a flame hole in the second recess 8 provided on the peripheral end can be kept as it is from a deep part of the adjacent projection 6 upon low load combustion so that CO from the peripheral end flame hole arrangement part 7 is prevented from being produced and hence a combustion amount range can be increased to improve the whole combustion performance of the ceramic combustion panel 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an infrared burner for burning gas and a baking cooker using the infrared burner.

[0002]

2. Description of the Related Art A conventional infrared burner and a baking cooker using the infrared burner will be described below.

As shown in FIGS. 4 and 5, the burner body 31
On the burning surface of the ceramic burning board 32 arranged in
There is a baking cooker 38 in which an infrared burner 36 having a configuration in which convex portions 34 provided with and concave portions 35 having no flame mouth are alternately provided is installed in a baking chamber 37 (for example, JP-A-1-234707).
(See the official gazette).

In this structure, the concave portion 35 is used as the flameless opening area, and the portion having the reduced heat capacity is used as the convex portion 3 provided with the flame opening 33.
Although it is trying to secure the combustibility by sandwiching it alternately with 4, the ceramic combustion plate 3
The peripheral edge portion of No. 2 was cooled most, the amount of CO generated increased, and the combustibility was deteriorated. Therefore, as a result, the combustion amount variable range was narrowed. Infrared burner 36 like this
When applied to a baking cooker 38 that requires a wide range of heat control, especially a weak squeeze, good cooking results could not be obtained due to overburning, and a wide cooking menu could not be supported.

Further, as shown in FIG. 6, the burner body 41
, An infrared burner 45 is provided with a ceramic combustion board 43 having a plurality of penetrating flame openings 42, and a heating plate 44 made of a heat-resistant metal provided on the entire periphery of the ceramic combustion board 43 and the flameless opening area. There is (for example, actual Kaihei 1-1362
No. 41).

In this structure, the temperature of the peripheral edge of the flameless opening region of the ceramic combustion board 43 is kept higher to ensure the combustibility, but a separate member such as the heating plate 44 is required. About 4 ceramic burners 43
Since it is fixedly mounted on the burner body 41 without a gap, the number of working steps is increased, resulting in an extremely high cost.

[0007]

As described above, in the conventional configuration, the infrared burner 36 cools the vicinity of the peripheral end portion of the flame opening portion of the ceramic burner 32, especially when burning under a low load, and CO Is increased, and therefore the variable range of the combustion amount is narrowed. Further, when the infrared burner 36 is used as a cooking burner of the baking cooker 38, a good cooking result cannot be obtained. Further, the infrared burner 45 needs a separate member called a heating plate 44 for keeping the temperature of the peripheral edge of the flameless opening area of the ceramic burner 43, and about four ceramic burners 43 are fixedly arranged on the burner body 41 without any gap. There is a problem that the cost is extremely high in that the work man-hours increase due to the installation.

The present invention solves the above-mentioned problems of the prior art by preventing the cooling of the ceramic combustion disc, especially during low-load combustion, and ensuring quick combustibility and a wide combustion amount variable range.
Providing an infrared burner that can reduce unburned components such as CO
An object of the present invention is to provide a baking cooker capable of obtaining good cooking results by using the infrared burner as a cooking burner.

[0009]

In order to achieve the above object, an infrared burner of the present invention and a baking cooker using the infrared burner are provided with a burner case and a plurality of penetrating flame ports arranged in the burner case. The ceramic combustion plate is formed, and the first concave portion and the convex portion provided with flame openings are alternately formed on the surface of the ceramic combustion plate on the downstream side where the fuel premixture flows, and at least the peripheral edge of the ceramic combustion plate is formed. A structure in which a second recess deeper than the first recess is provided in the flame port arrangement portion, a firing chamber having an exhaust port and an infrared burner insertion port at one end, and a ceramic having a plurality of penetrating flame ports Equipped with an infrared burner in which the burner is installed in the burner case, the infrared burner is installed toward the firing chamber, and the peripheral end of the infrared burner insertion port is made into a recess with respect to the burning surface of the infrared burner, and ceramic burning is performed. With the outer periphery of the board Part configuration are opposed to, and,
The firing chamber was provided with an exhaust port at one end and the infrared burner described above installed in the firing chamber.

[0010]

In this structure, the first concave portion and the convex portion provided with a plurality of flame openings are alternately formed on the downstream surface of the ceramic combustion plate through which the fuel premixture flows, and the flame openings at least at the peripheral edge are formed. By providing the second concave portion deeper than the first concave portion in the arrangement portion, during low load combustion, a convex portion where the combustion heat at the flame port of the second concave portion provided at the peripheral end is adjacent Since it can be heated and kept warm from a relatively deep place, CO generation from the vicinity of the flame mouth at the peripheral edge can be prevented, the variable range of the combustion amount can be increased, and the combustibility of the entire ceramic burner can be improved. A wide combustion amount variable range can be obtained.

Further, an infrared burner having a ceramic burner having a plurality of penetrating flame openings in a burner case is provided in an infrared burner insertion port of the firing chamber, with its burning surface facing the firing chamber. , The peripheral end of the infrared burner insertion port is formed as a recess with respect to the combustion surface of the infrared burner, and the outer peripheral portion of the ceramic combustion plate is opposed to the concave portion, so that it is formed between the concave part and the outer peripheral portion of the ceramic combustion plate. The air layer and the folded-back portion at the inner peripheral edge of the recess keep the flame outlet near the outer peripheral portion of the ceramic combustion plate warm, so that low load combustion (weak)
The generation of CO can be suppressed, a cooking burner having a wide range of combustion amount can be secured, good cooking results can be obtained in a wide cooking menu, and the ceramic burner can be prevented from falling due to the recess.

Further, by arranging the above-mentioned infrared burner with its combustion surface facing the firing chamber, during low load combustion, the heat of combustion at the flame opening of the second concave portion provided at the peripheral end is generated. Since the adjacent convex parts can be heated and kept warm from a relatively deep place,
By preventing the generation of CO from the vicinity of the flame mouth at the peripheral edge, it is possible to secure a cooking burner having a wide combustion amount variable range, and a good cooking result can be obtained in a wide cooking menu.

[0013]

【Example】

(Embodiment 1) An embodiment of an infrared burner of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, a ceramic combustion plate 4 having a large number of penetrating flame openings 3 is arranged in the opening of the burner case 2 of the burner body 1, and the ceramic pre-mixture of the ceramic combustion plate 4 First concave portions 5 and convex portions 6 are alternately formed on the downstream surface (combustion surface) that flows, and the deeper than the first concave portions in the flame outlet arrangement portion 7 at the peripheral end of the ceramic combustion board 4. This is a configuration in which the second recess 8 is provided.

As described above, according to the present embodiment, the first concave portion 5, the convex portion 6 and the second concave portion 8 are formed on the combustion surface of the ceramic combustion board 4, and a plurality of flame holes are formed in each concave and convex portion. With the configuration described above, at the time of low-load combustion, the convex portions 6 adjacent to each other by the combustion heat at the flame mouths of the second concave portions 8 provided in the flame mouth arrangement portion 7 at the peripheral end can be heated and kept warm from a relatively deep portion. Therefore, it is possible to prevent the generation of CO from the vicinity of the flame mouth 7 at the peripheral edge, increase the variable range of the combustion amount, improve the combustibility of the entire ceramic burner 4, and further enable low load combustion.

(Embodiment 2) As shown in FIG. 2, a firing chamber 13 having an exhaust port 11 and an infrared burner insertion port 12 at one end.
And a ceramic burner 15 having a plurality of flame openings 14 penetrating therethrough in the infrared burner insertion opening 12
6, the infrared burner 17 arranged so that its combustion surface faces the firing chamber 13, and the opening peripheral end portion 18 of the infrared burner insertion port 12 is positioned above the combustion surface of the infrared burner 17. Ceramic burner 1 bent into a V-shaped concave shape
5, the outer peripheral portion of 5 and the peripheral edge portion 18 of the opening face each other.

As described above, according to this embodiment, the air layer formed between the opening peripheral end portion 18 and the outer peripheral portion of the ceramic combustion plate 15 and the upwardly directed inner peripheral end of the opening peripheral end portion 18 are directed upward. During the low-load combustion (weak), the U-shaped folded portion keeps the flame opening near the outer peripheral portion of the ceramic combustion plate 15 warm.
CO generation is suppressed, a cooking burner with a wide combustion amount variable range can be secured, good cooking results can be obtained for a wide cooking menu, and the ceramic combustion plate 15 is fired by the opening peripheral end portion 18. It is possible to prevent the container 13 from falling to the bottom. As described above, the configuration of the opening peripheral end portion 18 of the infrared burner insertion port 12 can also serve as a flame retaining, heat retaining, and fixing mechanism for the infrared burner 17, so that it can be configured at low cost without requiring a separate member. . Therefore,
It is possible to provide a baking cooker which has a great advantage for the user in terms of a wide range of calorie adjustment and low cost.

(Embodiment 3) As shown in FIG. 3, this embodiment is provided with a baking chamber 23 having an exhaust port 21 and an infrared burner insertion port 22 at one end, and the infrared burner insertion port 22 is provided with the firing chamber 23 of the first embodiment. An infrared burner 24 having the ceramic burner 4 arranged in the burner case 2 is arranged with its burning surface facing the firing chamber 23.

As described above, according to this embodiment, at the time of low load combustion, the convex portion 6 in which the combustion heat at the flame opening of the second concave portion 8 provided in the flame opening arrangement portion 7 at the peripheral end is adjacent to the convex portion 6 is formed. Heating from relatively deep,
Since it is possible to keep warm, it is possible to prevent the generation of CO from the vicinity of the flame mouth arrangement part 7 at the peripheral edge, to secure a cooking burner with a wide combustion amount variable range, and to obtain good cooking results on a wide range of cooking menus. To be In this way, since the combustibility can be ensured by the ceramic combustion board 4 itself, high durability can be maintained. Therefore, it is possible to provide a baking cooker with a great advantage for the user in terms of a wide range of calorie adjustment and high durability.

[0020]

As is apparent from the above description, the infrared burner of the present invention and the baking cooker using the infrared burner have the following effects.

(1) A first concave portion and a convex portion are alternately formed on the combustion surface of the ceramic combustion plate, and a second concave portion deeper than the first concave portion is provided at least at the flame end portion at the peripheral end. As a result, CO is prevented from being generated from the vicinity of the flame opening at the peripheral edge,
The variable range of the combustion amount can be increased, the combustibility of the entire ceramic burner is improved, and further low load combustion is possible.

(2) An infrared burner having a ceramic burner arranged in a burner case is provided at the infrared burner insertion port toward the firing chamber, and the opening peripheral end of the infrared burner insertion port is connected to the infrared burner. By making a concave portion with respect to the combustion surface, and facing the outer peripheral portion of the ceramic combustion plate and the peripheral edge of the opening,
Since the structure of the opening peripheral end of the infrared burner insertion port can also serve as the flame holding, heat insulating, and fixing mechanism of the infrared burner, it is possible to provide a baking cooker with low cost, large calorie adjustment range, and high merit. it can.

(3) By arranging the above-mentioned infrared burner toward the firing chamber, the combustibility can be ensured by the ceramic burner itself, so that the calorie adjustment range is large and the durability is very high for the user. It is possible to provide a baking cooker with high merit.

[Brief description of drawings]

FIG. 1 (a) is a front view of a main part of a ceramic burner for an infrared burner according to an embodiment of the present invention. FIG. 1 (b) is a sectional view of the main part of the infrared burner.

FIG. 2 is a sectional view showing the concept of the configuration of a baking cooker according to the present invention.

FIG. 3 is a sectional view showing the concept of the configuration of a baking cooker using an infrared burner according to an embodiment of the present invention.

FIG. 4A is an external perspective view of a conventional infrared burner. FIG. 4B is a schematic front view of a ceramic burner of the infrared burner.

FIG. 5 is a schematic cross-sectional view of a baking cooker using a conventional infrared burner.

FIG. 6 is a front view of another conventional infrared burner.

[Explanation of symbols]

 2, 16 burner case 3, 14 flame port 4, 15 ceramic combustion plate 5 first concave portion 6 convex portion 7 peripheral edge flame outlet arrangement portion 8 second concave portion 11, 21 exhaust port 12 infrared burner insertion port 13, 23 Firing Room 17, 24 Infrared Burner 18 Opening Edge

Claims (3)

[Claims] 1. A burner case, and a ceramic combustion plate provided in the burner case and having a plurality of penetrating flame openings, the ceramic combustion plate having the fuel premixture on a downstream side thereof. An infrared ray in which first concave portions and convex portions provided with flame openings are alternately formed, and a second concave portion deeper than the first concave portion is provided at least in the flame opening arrangement portion at the peripheral edge of the ceramic combustion board. Burner. 2. An infrared burner comprising: a firing chamber having an exhaust port and an infrared burner insertion port at one end; and an infrared burner in which a ceramic combustion board having a plurality of penetrating flame ports is disposed in a burner case. A baking cooker which is disposed toward the baking chamber and has a peripheral end portion of the infrared burner insertion port as a concave portion with respect to a combustion surface of the infrared burner, and an outer peripheral portion of the ceramic combustion plate and the concave portion face each other. 3. A baking cooker equipped with a baking cabinet having an exhaust port at one end, and an infrared burner according to claim 1 or 2 installed in the baking cabinet.