JPH0681613B2 - Baking cooker - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a baking cooker in which a heat radiation surface of a gas infrared burner having a large number of combustion holes is provided so as to face a food item.

2. Description of the Related Art FIG. 2 shows a baking cooker of this type as a conventional example.

The baking cooker 1 is provided with a gas infrared burner 3 in the upper part of the chamber 2, and a plurality of heat radiation plates 4 constituting the gas infrared burner 3 are placed facing the grill 5 on which the food in the chamber 2 is placed. The secondary air necessary for the gas infrared burner 3 to burn is configured to be the front lower opening 6 and the rear lower opening 25.
The intake heat radiation plate 4 is supplied to the intake heat radiation plate 4, and the combustion exhaust gas is discharged from the exhaust port 7.

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 radiation plate 4, and the heat radiation plate 4 is heated by the heat of combustion to radiate heat. The emitted radiant heat is configured as a baking cooker 1 that heats and cooks a food item placed on the grill 5.

However, in the configuration of the conventional baking cooker described above, when the gas infrared burner 3 is burned, fresh secondary air is generated by natural convection, so that the front lower opening 6 and the rear lower opening 25. The lower opening 25 of the rear opening is located below the exhaust port 7, so that the discharge speed from the exhaust opening 7 is high, and the inflow speed of the secondary air from the lower opening 25 of the rear opening is also higher. Get faster

Therefore, the fresh secondary air from the front opening 6 becomes a turbulent flow phenomenon around the rear portion of the heat radiating plate 4, natural convection is not sufficiently performed, and good combustion performance cannot be obtained. Further, the outer periphery of the grill 5 on which the cooked food of the baking cooker 1 is placed is cooled by the flow of air of natural convection, and is absorbed by the heat absorption of the wall surface of the inside 2 of the grill. Although it is cooled by the flow of air, the central portion of the grill 5 is hard to cool. Therefore, when the heat radiating plate 4 of the gas infrared burner 3 is heated and red-heated, the food is not uniformly heated, and the grill is not heated. There was a problem that the central part of the was burned and uneven cooking occurred, and good cooking performance could not be obtained. The present invention solves the above conventional problems, and an object thereof is to improve the combustion performance and cooking performance of a baking cooker.

Means for Solving the Problems In order to solve the above problems, the baking cooker of the present invention has a gas infrared burner having a heat radiation plate using a ceramic plate provided with a large number of combustion holes, facing the food. It 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 part of the cooking chamber, at the lower part of the exhaust port at the rear part of the gas infrared burner, at the lower rear part of the cooking chamber. A straightening vane is provided to supply more intake air for combustion to the infrared burner.

Effect of the Invention 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 also sufficiently supplied to the heat radiating plate, no turbulent flow phenomenon occurs around the rear part of the heat radiating plate, and the secondary air entering from the front lower opening and rear lower opening is rectified by the rectifying plate, so good combustion is achieved. The performance is obtained. Further, since the secondary air can be sufficiently supplied to the rear part of the heat radiation plate, the red heat temperature becomes high, and the rear part of the cooked food placed on the grill is also heated, so that good cooking performance can be obtained.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings.
The parts having the same functions as the conventional ones are given the same numbers and their explanations are omitted.

Referring to FIG. 1, a baking cooker 1 has a gas infrared burner 3 having a heat radiating plate 4 held by 14 holding frames with an inclination of a predetermined width W so that the gas infrared burner 3 faces the cooked product and is placed on the upper surface of the refrigerator 2. The infrared burner 3 has a press-formed product 15 and a fitting hole 16 for the heat radiating plate 4, and the heat radiating plate 4 is provided around the periphery of the fitting hole 16.
It is held by press-fitting with a press-molded product 17 having an open end 18 for insertion of, and a gas seal packing 19 is wound around the side faces of two heat radiation plates 4 of the same shape made of ceramic plates in the fitting hole 16. . In the above structure, the fresh secondary air that has entered the chamber 2 through the front lower opening 6 of the baking cooker 1 tilts the infrared burner 3 and installs it on the grill cover 23, so natural convection is sufficiently performed. Inclined heat radiation plate 4
The fresh secondary air sufficiently supplied to the red heat section of the baking cooker 1 and entering from the rear lower opening 25 of the baking cooker 1 enters the inside 2 through the flow straightening plate 26 and the heat radiation plate 4 of the infrared burner 3 The exhaust gas that has been supplied to and burned is discharged from the exhaust port 7. That is, the fresh secondary air entering from the rear lower opening 25 has a high inflow speed unless the flow straightening plate 26 is interposed, so that the fresh secondary air entering from the front opening 6 is disturbed at the rear of the heat radiation plate 4. It becomes a flow phenomenon, and natural convection cannot be performed sufficiently and combustion failure occurs. Therefore, the rectifying plate 26 has an effect of rectifying the fresh secondary air entering from the front lower opening 6 and the rear lower opening 25. Further, it is conceivable to further lengthen the straightening vane 26, but if it is lengthened, the radiating area on the surface of the grill 5 overhanging below the heat radiating plate 4 is reduced. Further straightening plate
If 24 is shortened, the rectification effect will be lost and combustion failure will occur. Therefore, the rectifying plate 26 is configured to be installed so as to maintain a constant space with the heat radiating plate 4 of the infrared burner 3, which shows that it is an effective means for improving combustion performance.

Further, a configuration in which the inclination width W of the infrared burner 3 is further inclined is conceivable, but when the inclination width W is increased, the food placed on the grill 5 is not uniformly heated, and the back portion is scorched and uneven cooking occurs. . Further, when the inclination width W is made smaller, the flow velocity of the fresh secondary air flowing in from the lower opening 6 on the front surface is reduced, a turbulent flow phenomenon occurs at the rear part of the heat radiation plate 4, and the effect of installing the straightening plate 26 is reduced. Small combustion failure occurs. Therefore, it is shown that the infrared burner 3 is configured to be installed while holding a predetermined inclination width W, which is an effective means for improving combustion performance and cooking performance.

In addition, the current plate 26 is attached to the bottom of the exhaust port 7 to cover the grill cover 23.
Since it is installed between the grill case 24 and the grill case 24, when spilled food on the stove falls from the exhaust port 7 into the chamber 2, it does not fall to the bottom of the baking cooker 1 and stain the floor surface. The fallen objects can be easily removed by cleaning because they are collected in the grill plate 27 via the straightening plate 26, and the lower part of the baking cooker 1 can be always kept clean.

Further, even when the food placed on the grill 5 is accidentally ignited during cooking, the combustion air flowing in from the rear lower opening 25 intervenes the rectifying plate 26 and the heat radiating plate 4 Since the exhaust gas is supplied to the exhaust port 7, it is possible to reduce the discharge speed of the combustion exhaust gas from the exhaust port 7 and reduce the flame standing up from the exhaust port 7.

Effects of the Invention As described above, according to the baking cooker of the present invention, the following effects are obtained.

(1) The turbulent flow phenomenon around the heat radiating plate in which the combustion air is sufficiently supplied to the heat radiating plate is also eliminated, and good combustion performance can be obtained.

(2) Since it is possible to obtain a uniform heat distribution on the grill surface on which the cooked product is placed, the cooked product is prevented from being unevenly burned, and good cooking performance can be obtained.

(3) The lower part of the baking cooker can be kept clean at all times without dropping the cooking scattered matter dropped from the exhaust port to the floor surface.

(4) When the cooked food placed on the grill catches fire, the inflow speed of the combustion air flowing from the rear lower opening is reduced, so that the flame emitted from the exhaust port can be reduced. .

[Brief description of drawings]

FIG. 1 is a sectional view of a baking cooker according to an embodiment of the present invention,
FIG. 2 is a sectional view of a conventional baking cooker. 1 ... Baking cooker, 2 ... Inside, 3 ... Gas infrared burner, 4 ... Heat radiation plate, 5 ... Grill net, 8 ... Combustion hole, 26
……rectifier.

Claims (1)

[Claims] 1. A gas infrared burner having a heat radiation plate using a ceramic plate having a large number of combustion holes is provided on the upper surface of the cooking chamber so as to face a food item with an inclination, and the gas infrared burner is combusted and exhausted. Gas is configured to be discharged from an exhaust port provided at the rear of the cooking chamber, and combustion air taken from the rear lower part of the cooking chamber is supplied to the infrared burner at the rear of the gas infrared burner and the lower part of the exhaust port. Therefore, a baking cooker with a straightening vane.