JPH07280276A - Baking and cooking device - Google Patents

Abstract

PURPOSE:To enable a smooth air discharging to be carried out through a discharging port and further to enable an energy saving to be attained without reducing a combustion efficiency. CONSTITUTION:There is provided an infra-red burner 13 storing a ceramic combustion plate 10 formed with a plurality of flame ports 9 and 16. A surface density of the flame ports 16 formed at both sides of a front door 5 and a rear discharging port 7 of the ceramic combustion plate 10 is made to be closer than that of the flame port 9 formed at the other part, thereby a flame at each of the flame ports 16 is extended to get secondary air and concurrently the flame is expanded to ignite smoke generated from a cooking item 17a, resulting in that a discharging of smoke can be reduced and a heating region of wide forward or rearward heating distribution can be attained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a baking cooker which uses the heat of combustion of gas.

[0002]

2. Description of the Related Art In recent years, various measures have been taken to improve the cooking environment by burning smoke generated from cooked foods (see, for example, Japanese Utility Model Laid-Open No. 4-14909).

A conventional baking cooker will be described below. As shown in FIG. 3, the gas burner 2 for cooking is arranged in the upper portion of the firing chamber 1, and the gas burner 4 for smoke burning is disposed in the smoke discharge passage 3 led out from the upper rear portion in the firing chamber 1. The flame length of the smoke burning gas burner 4 is increased.

[0004]

However, in the above-mentioned conventional configuration, as the cooking gas burner 2 and the smoke burning gas burner 4 burn, the burning efficiency during cooking is improved, but the inside of the baking chamber 1 is improved. Not only that, the temperature of the smoke exhaust passage 3 also rises, the pressure in the smoke exhaust passage 3 rises, and the exhaust resistance increases, so that exhaust gas or smoke leaks from every place vented to the outside of the firing chamber 1. There is a problem that the cooking environment is bad and the door of the baking cabinet 1 is overheated and it is unsafe, and the total combustion including the smoke burning gas burner 4 and the cooking gas burner 2 arranged in the smoke discharge passage 3 Since the amount increases, there is a problem that energy saving is lacking.

The present invention solves the above-mentioned problems of the prior art by reducing the emission of smoke generated from cooked foods and smoothly exhausting the exhaust gas from the exhaust port without lowering the efficiency of smoke burning. Moreover, it aims at providing the baking cooker which maintained the energy saving property.

[0006]

In order to achieve this object, the baking cooker of the present invention has a heat resistance having a mixing tube at one end in the upper part of the baking chamber provided with a door at the front and an exhaust port at the upper rear. It is equipped with a metal burner case and an infrared burner that houses a ceramic combustion board with a plurality of penetrating flame openings with the combustion surface facing the inside of the firing chamber. The flame densities formed on both sides of the exhaust port side are made denser than the flame densities formed on other parts, and also the front door side and rear exhaust port of the ceramic burner The thickness of the flame openings formed in both side portions is made thicker than the thickness of the flame openings formed in the other portions.

[0007]

In this structure, the flame formed at the flame mouth portion having a dense areal density of the flame mouth expands at the same time as the secondary air is sought, so that the smoke generated from the cooked food always expands. Since the amount of radiant heat is large in front of and behind the ceramic burner, both the food placed on the door side and the food placed near the exhaust port are sufficiently heated and spread over a wide range. A heating distribution will be obtained.

[0008] Further, smoke generated from the food always contacts the flame formed in the portion where the thick flame mouth is arranged,
Moreover, since the front and rear of the ceramic burner are close to the food and the amount of heat received is large, both the food placed on the door side and the food placed near the exhaust port are sufficiently heated, and a wide range is achieved. A heating distribution will be obtained.

[0009]

【Example】

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

As shown in FIG. 1, a plurality of penetrating flame ports 9 and 16 are formed in the upper part of a firing chamber 8 provided with a door 5 in the front and an exhaust port 7 through an exhaust passage 6 in the rear. An infrared burner 13 is provided in which the installed ceramic combustion board 10 is housed in a burner case 12 having a mixing tube 11 formed at one end.
A lower heat source 15 made of a sheathed heater is arranged in the lower part of the baking chamber 8 through a saw net 14 arranged near the center of the baking chamber 8. On the ceramic burner 10, the flame densities 16 formed on both the front door 5 side and the rear exhaust port 7 side are made denser than the flame densities 9 formed on other portions. It has been configured. The infrared burner 13 has a structure in which its combustion surface faces only the firing chamber 8 and does not extend to the exhaust passage 6.

The operation of the baking cooker configured as described above will be described below. When the cooked foods 17, 17a, 17b are placed on the drainboard net 14, the lower heat source 15 is energized, and the infrared burner 13 is ignited, the cooked foods 17,
17a and 17b are heated from both upper and lower sides, and the oil content leached from the cooked food 17a placed on the exhaust port 7 side comes into contact with the lower heat source 15 to emit smoke. On the other hand, ceramic burner 10
16 at the end of both the door 5 side and the rear exhaust port 7 side
Has a surface density higher than the surface density of the other flame ports 9, so that the flame formed at the portion where the flame ports 16 are disposed has a partial density of 2
It expands at the same time it becomes longer in search of the next air. At this time,
Since the smoke generated from the cooked food 17a always comes into contact with the expanded flame and burns, the amount of smoke passing from the exhaust passage 6 to the exhaust port 7 is small and the combustion efficiency is not lowered. Also,
Since the amount of heat received before and after the ceramic burner 10 is larger than that on the door 5 side, both the cooked food 17b placed on the door 5 side and the cooked food 17a placed near the exhaust port 7 are sufficiently heated. A uniform and wide heating distribution can be obtained without narrowing the cooking space. Further, since the combustion surface of the ceramic combustion board 10 faces only the firing chamber 8 and the ceramic combustion board 10 is not extended to the exhaust passage 6 for smoke burning, the exhaust gas can be smoothly discharged from the exhaust port 7, It is possible to prevent the entire cabinet 8 from being overheated due to heat buildup due to exhaust resistance.

(Second Embodiment) A second embodiment of the present invention will be described below.

As shown in FIG. 2, in this embodiment, in addition to the structure of the first embodiment, the ceramic combustion board 10 is replaced by another flame on both the front door 5 side and the rear exhaust port 7 side. The ceramic combustion board 19 has a thick portion 18 formed thicker than the portion where the mouth 9 is arranged. Reference numeral 20 in the figure denotes an infrared burner.

The operation of the baking cooker configured as described above will be described below. When the cooked foods 17, 17a, 17b are placed on the drainboard net 14, the lower heat source 15 is energized, and the infrared burner 20 is ignited, the cooked foods 17,
17a and 17b are heated from both upper and lower sides, and the oil content leached from the cooked food 17a placed on the exhaust port 7 side comes into contact with the lower heat source 15 to emit smoke. On the other hand, ceramic burner 19
Since the thick portion 18 is formed on both the door 5 side and the rear exhaust port 7 side, smoke generated from the cooked food 17a is always in contact with the flame formed by the thick portion 18 and burns. The amount of smoke passing from the exhaust passage 6 to the exhaust port 7 decreases. In addition, the front and rear of the ceramic burner 19 is the cooked food
a, 17b, the amount of heat received is large, so that both the cooked food 17b placed on the door 5 side and the cooked food 17a placed near the exhaust port 7 are sufficiently heated, resulting in a wide heating distribution. can get. Further, since the burning surface of the ceramic burning board 19 faces only the baking chamber 8, the exhaust passage 6 is used for burning the smoke.
Since the ceramic combustion board 19 is not extended up to this point, the exhaust gas can be smoothly discharged from the exhaust port 7. Therefore, it is possible to prevent the entire firing chamber 8 from being overheated due to the heat accumulation due to the exhaust resistance. Furthermore, since it is not necessary to make the surface density of the flame openings 9 in the thick portion 18 dense, fuel consumption can be minimized and energy saving can be maintained.

[0015]

As is apparent from the above description, according to the present invention, the surface density of the flame port formed in both the front door side and the rear exhaust port side of the ceramic burner is formed in the other portion. The flame densities are made denser than the surface density of the installed flame outlets, and the thickness of the flame outlets formed on both the front door side and the rear exhaust outlet side of the ceramic burner is formed on the other portion. With the structure thicker than the above, it is possible to reduce the emission of smoke generated from cooked foods, to smoothly discharge the exhaust gas from the exhaust port without lowering the combustion efficiency, and to have an excellent baking efficiency that saves energy. Can be realized.

[Brief description of drawings]

FIG. 1 (a) is a schematic cross-sectional view showing the concept of the configuration of a baking cooker according to a first embodiment of the present invention (b) is a cross-sectional view of a ceramic burner of the baking cooker (c) is a ceramic burner of the same. Front sketch of

FIG. 2 (a) is a schematic cross-sectional view showing the concept of the configuration of the baking cooker according to the second embodiment of the present invention. FIG. 2 (b) is a cross-sectional view of the ceramic burner of the baking cooker.

FIG. 3 is a schematic sectional view showing the concept of the configuration of a conventional baking cooker.

[Explanation of symbols]

 5 Door 7 Exhaust Port 8 Firing Room 9,16 Flame Port 10,19 Ceramic Combustion Plate 11 Mixing Tube 12 Burner Case 13,20 Infrared Burner 18 Thick Section

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Yuji Nakabayashi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Miki Moriguchi, 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. (72) Inventor Yoshiyuki Kajitani 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (2)

[Claims] 1. A firing chamber provided with a door on the front side and an exhaust port on the upper rear side, a burner case made of a heat-resistant metal provided with a mixing tube at one end, and the burner case with its combustion surface facing the inside of the firing chamber. An infrared burner accommodating a ceramic burner in which a plurality of penetrating flame openings are formed, and is formed on both the door side in front of the ceramic burner and the exhaust port side behind. A baking cooker characterized in that the areal density of the flame mouth is made higher than the areal density of the flame mouth formed in another portion. 2. A firing chamber provided with a door at the front and an exhaust port at the upper rear, a burner case made of a heat-resistant metal provided with a mixing tube at one end, and the burner case with its combustion surface facing the inside of the firing chamber. An infrared burner accommodating a ceramic combustion board having a plurality of penetrating flame openings formed therein, and the flame openings on the door side in front of the ceramic combustion board and on the exhaust port side in the rear are formed. A baking cooker, characterized in that the thickness of both parts is made thicker than the thickness of the other part where the flame mouth is formed.