JPH0280016A - Baking cooker - Google Patents

Abstract

PURPOSE:To improve the burning performance and cooking performance of a baking cooker by feeding the secondary air entering through a rear lower opening section to the heat radiating plate of an infrared burner without directly discharging it through an exhaust port. CONSTITUTION:The fresh secondary air entering the interior 2 through the front lower opening section 6 of a baking cooker 1 is sufficiently fed to the red heat section of an inclined heat radiating plate 4 because an infrared burner 3 is inclined and installed on a grill cover 23 and natural convection is thoroughly performed. The fresh secondary air entering through the rear lower opening section 25 of the baking cooker 1 enters the interior 2 via a rectifying plate 26 and is fed to the heat radiating plate 4 of the infrared burner 3. If no rectifying plate 26 exists, the inflow speed is fast, the fresh secondary air entering through the front opening section 6 has a turbulence phenomenon at the back of the heat radiating plate 4, natural convection can not be sufficiently performed, and unsatisfactory burning occurs. The turbulence phenomenon around the heat radiating plate is resolved, and good burning performance is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cooking device in which a heat radiating surface of a gas infrared burner having a large number of combustion holes is provided facing the food to be cooked.

Conventional technology A conventional firing cooker of this type is shown in FIG.

The grilling cooker 1 is equipped with a gas infrared burner 3 in the upper part of the oven interior 2, and a heat radiation plate 4 made up of a plurality of sheets making up the gas infrared burner 3 is placed facing the grill 5 on which the food to be cooked in the oven interior 2 is placed. The secondary air necessary for the gas infrared burner 3 to burn is supplied to the front lower opening 6 and the rear lower opening 2.
5, the combustion exhaust gas is supplied to the heat radiating plate 4, and the combustion exhaust gas is discharged from the exhaust lower.

The gas supplied to the gas infrared burner 3 burns on the surface of a large number of combustion holes 8 provided in the heat radiating plate 4, and the heat radiating plate 4 is heated red-hot by the combustion heat and emits radiant heat. The emitted radiant heat is used as a cooking device 1 for cooking food placed on a gridiron 5.

Problems to be Solved by the Invention However, in the configuration of the conventional baking cooker described above, when the gas infrared burner 3 is burnt, fresh secondary air flows through the front lower opening 6 and the rear lower opening 26 due to natural convection.
However, since the rear opening lower part 25 is located at the lower part of the exhaust lower, the discharge speed from the exhaust lower is faster, and the inflow speed of secondary air from the rear opening lower part 25 is also faster. .

Therefore, the fresh secondary air from the front opening 6 becomes turbulent around the rear part of the heat radiating plate 4, resulting in insufficient natural convection and a problem in that good combustion performance cannot be obtained. Ta. Further, the outer periphery of the grill 6 on which the food to be cooked in the cooking device 1 is placed is cooled by natural convection air flow and heat absorption by the wall of the interior 2, and is further cooled by the rear lower opening 25.
Although it is cooled by the secondary air flow, the grill 5
Since the center part of the grid is difficult to cool down, if the heat radiation plate 4 of the gas infrared burner 3 heats up to red-hot temperature, the food will not be heated evenly, and the center part of the grid will be burnt and uneven cooking will occur. However, the problem was that it was not possible to obtain good cooking performance. The present invention solves such conventional problems, and aims to improve the combustion performance and cooking performance of a firing cooker.

Means for Solving the Problems In order to solve the above problems, the baking cooker of the present invention includes a gas infrared burner having a heat radiation plate using a ceramic plate with a large number of combustion holes, and facing the food to be cooked. The gas infrared burner is provided on the upper surface of the cooking chamber, and is configured to discharge the combustion exhaust gas of the gas infrared burner from an exhaust port provided at the rear of the cooking chamber, and the gas infrared burner is provided at the rear lower part of the cooking chamber at the lower part of the exhaust port at the rear of the gas infrared burner. A rectifier plate is provided to supply the combustion air taken in to the infrared burner.

Operation The present invention is configured as described above so that the secondary air entering from the rear lower opening can be supplied to the heat radiation plate of the infrared burner without being directly discharged from the exhaust port, and the secondary air taken in from the front lower opening is The heat is sufficiently supplied to the heat radiating plate, and there is no turbulence phenomenon around the rear of the heat radiating plate, and the front lower opening.

Since the secondary air entering from the rear lower opening is rectified by the rectifying plate, good combustion performance can be obtained. moreover,
Since secondary air can be sufficiently supplied to the rear part of the heat radiating plate, the red-hot temperature is not high, and the rear part of the food placed on the grill is also heated, so good cooking performance can be obtained.

Example Embodiments of the present invention will be described below with reference to the accompanying drawings.

Incidentally, parts having the same functions as those in the prior art are given the same numbers and explanations will be omitted.

In FIG. 1, a baking cooker 1 has a gas infrared burner 3 having a heat radiating plate 4 held by a holding frame 14, which is inclined with a predetermined width W and placed on the upper surface of an interior 2 facing the food to be cooked. The infrared burner 3 has a press-molded product 16 and a fitting hole 16 for the heat radiating plate 4, and a press having a tip 18 at the periphery of the fitting hole 16 for inserting the heat radiating plate 4. Molded product 17
2 of the ceramic plates in the fitting hole 16.
A gas seal packing 19 is wrapped around and press-fitted onto the side surfaces of the heat radiating plates 4 having the same shape. In the above configuration, fresh 2
Next, the air tilts the infrared burner 3 and the grill cover 2
3, sufficient natural convection occurs and a sufficient amount of heat is supplied to the red-hot part of the inclined heat radiating plate 4, and furthermore,
Fresh food 2 entered from the rear lower opening 25 of the baking cooker 1
The next air enters the chamber 2 via the rectifying plate 26 and is supplied to the heat radiation plate 4 of the infrared burner 3, and the combusted exhaust gas is discharged from the exhaust lower. That is, the rear lower opening 25
The fresh secondary air that has entered through the front opening 6 will flow at a high speed unless the rectifier plate 26 is used, so the fresh secondary air that has entered through the front opening 6 will cause turbulence at the rear of the heat radiation plate 4, causing natural convection. If this is not done sufficiently, poor combustion will occur. Therefore, the current plate 2
6 has the effect of rectifying fresh secondary air entering from the front lower opening 6 and the rear lower opening 25. In addition, the rectifying plate 26
A configuration in which the heat radiation plate 4 is made longer is also conceivable, but if the heat radiation plate 4 is made longer, the radiation area projected onto the grille 50 surface will be reduced. Furthermore, if the rectifying plate 24 is made short, the rectifying effect will be lost and poor combustion will occur. Therefore, the current plate 26
The structure is such that the heat radiating plate 4 of the infrared burner 3 is kept in a constant space and is an effective means for improving combustion performance.

It is possible to consider a configuration in which the inclination width W of the infrared burner 3 is further inclined, but if the inclination width W becomes large, the food placed on the grill 5 will not be heated evenly, and the rear part will be burnt and uneven cooking will occur. do. Furthermore, when the slope width W is made smaller, the flow velocity of fresh secondary air flowing in from the lower front opening 6 is reduced, and a turbulent flow phenomenon occurs at the rear of the heat radiation plate 4.
The effectiveness of the installation will be reduced and poor combustion will occur. Therefore,
The infrared burner 3 is installed with a predetermined slope width W, and is an effective means for improving combustion performance and cooking performance.

In addition, since the rectifying plate 26 is installed at the bottom of the exhaust lower, interposed between the grill cover 23 and the grill case 24, when the boiled food from cooking falls from the exhaust lower into the cooking chamber 2, it will not be heated during baking. Since the falling objects fall to the bottom of the cooking device 1 and are collected on the grill plate 27 via the rectifying plate 26 without staining the floor surface, the falling objects can be easily removed by cleaning, and the bottom of the baking device 1 can be kept clean at all times. is possible.

Furthermore, even if the food placed on the grill 5 is accidentally ignited during cooking, the combustion air flowing in from the rear lower opening 25 passes through the rectifying plate 26 and reaches the heat radiating plate 4. Because of the structure in which the combustion exhaust gas is supplied to the exhaust lower, it is possible to reduce the speed at which the combustion exhaust gas is discharged from the exhaust lower, and to reduce the flame emitted from the exhaust lower.

Effects of the Invention As described above, the cooking device of the present invention provides the following effects.

(1) Combustion air is sufficiently supplied to the heat radiation plate, turbulence around the heat radiation plate is eliminated, and good combustion performance is obtained.

(2) Since it is now possible to obtain uniform heat distribution on the surface of the gridiron on which the food is placed, the food will not burn unevenly and good cooking performance can be obtained.

(3) The lower part of the firing cooker can be kept clean at all times without causing cooking scatterings that fall from the exhaust port to fall onto the floor.

(4) When food placed on the grill catches fire, the inflow speed of the combustion air flowing in from the rear lower opening is slowed down, so the flame coming out from the exhaust port can be reduced. .

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a firing cooker in an embodiment of the present invention,
FIG. 2 is a sectional view of a conventional firing cooker. 1... Firing cooker, 2... Interior, 3.
... Gas infrared burner, 4 ... Heat radiation plate, 5 ... Grilling grid, 8 ... Combustion hole, 26
······rectifier. Name of agent: Patent attorney Shigetaka Awano and 1 other person 2nd
figure

Claims (1)

[Claims] A gas infrared burner having a heat radiating plate using a ceramic plate with a large number of combustion holes is installed on the upper surface of the cooking chamber so as to face the food to be cooked, and the combustion exhaust gas of the gas infrared burner is directed to the cooking chamber. The gas infrared burner is configured to be discharged from an exhaust port provided at the rear, and a rectifying plate is provided at the rear of the gas infrared burner and below the exhaust port to supply combustion air taken in from the rear lower part of the cooking chamber to the infrared burner. A firing cooker consisting of the following configuration.