JP2757516B2 - Gas cooker - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a gas cooker using a gaseous fuel such as city gas or liquefied petroleum gas.

2. Description of the Related Art In recent years, an energy-saving type gas cooker in which both sides of a cooked product are simultaneously grilled uniformly has become mainstream.

Conventionally, this type of gas cooker generally has a configuration shown in FIG. 3 and FIG. That is, in the gas grill, an upper burner 2 having a ceramic perforated plate or a wire mesh punched metal as a combustion plate is mounted on a ceiling of a heating chamber 1, and Bunsen is placed on the left and right lower portions of a cooking object 4 placed on a grill 3. There has been a double-sided baking method in which a lower burner 5 for forming a flame is provided, and both the upper burner 2 and the lower burner 5 are used.

The forced convection oven shown in FIG. 4 is provided with a highly airtight opening / closing door 10 in front of a heating chamber 9 containing a grill 7 on which the object 6 is placed and a saucer 8.
Is provided with a circulating fan 11, a heating Bunsen burner 12 is provided at the bottom of the heating chamber 9 and outside, and an exhaust port 12A is provided behind and above the heating chamber 9.

Problems to be Solved by the Invention However, in the gas grill of the double-sided baking method shown in FIG. 3, both upper and lower surfaces of the object to be cooked 4 can be heated and cooked simultaneously by the upper burner 2 and the lower burner 5, respectively. However, since the lower burner 5 is located at the lower part on the left and right sides of the object 4 to be cooked, it is difficult for the combustion heat from the left and right lower burners 5 to sufficiently reach the central part. In particular, as the width L of the heating chamber 1 increases, the tendency becomes more severe, and the lower surface of the object to be cooked 4 causes extreme unevenness in the left and right (front and rear) and central portions, and a good cooking result cannot be obtained.

Further, in the forced convection oven shown in FIG. 4, the heated air of the heating Bunsen burner 12 is forcibly circulated inside the heating chamber 9 by the circulation fan 11 to heat and cook the article 7 to be cooked. In order to keep the heat distribution near the cooking object 7 uniform, it is necessary to increase the air volume of the circulation fan 11 and the combustion amount of the Bunsen burner 12 for heating. The amount is 1.5
Not only is it required to be about twice, but also the airtightness of the door 10 is required to increase the amount of circulating air, and it is necessary to make the door 10 double glazing from the viewpoint of safety, which increases the cost. There were drawbacks.

An object of the present invention is to solve the above-mentioned problems and to provide a high-performance gas cooker that is free from uneven grilling and has good fuel efficiency.

Means for Solving the Problems To achieve the above object, the gas cooker of the present invention is provided with a radiant heat source above a heating chamber having an opening / closing door, and a lower burner is provided at a lower rear part of the heating chamber and outside the heating chamber. And an air blower provided with an air ejection portion in the vicinity of the lower burner or integrally with the heating burner in parallel with the row of flame holes of the lower burner.

According to the present invention, the direction of the flame and the hot air formed by the flame hole row of the lower burner is controlled by the above configuration by the diffused air flow blown out from the air blowout part arranged in parallel with the flame hole row of the lower burner. Then, the hot air generated by the combustion of the lower burner can reach far from the flame hole row. That is, the generated hot air reaches the front from the lower rear of the heating chamber, heats the lower part of the object placed on the grill with the hot air, and separates the upper and lower surfaces by the radiant heat from the radiant heat source. Can be heated simultaneously.

An embodiment of the gas cooker according to the present invention will be described below with reference to FIGS. 1 and 2.

As shown in the figure, an opening / closing door 13 made of a glass door is provided at a front portion of the heating chamber 15, and an exhaust port 14 is provided at an upper rear portion.
At the top of the heating chamber 15, there is a radiant heat source 16 using a ceramic perforated plate as a combustion plate, for example, and at the bottom of the heating chamber 15, there is a saucer 19 on which a grill 18 on which the object 17 is placed is placed. . An opening 20 is formed at the rear of the heating chamber 15 at a height between the grill 18 and the pan 19. The opening 20 outside the heating chamber 15
There is a lower burner 21 made of a substantially straight pipe-shaped Bunsen burner at a position corresponding to the air outlet section 23, which is provided integrally with the lower burner 21 and in parallel with the flame hole array 22 of the lower burner. A wind direction control plate 24 is attached to an upper portion of the air ejection unit 23. The air ejection unit 23 is connected to a blower 25 provided outside the heating chamber 15.

The air ejection portion 23 is provided with an air ejection hole 26 in parallel with the flame hole row 22 of the lower burner 21, and an end of the air ejection portion 23 is fitted to a protruding portion of the blower 25 to form a connection state. doing.
A gas nozzle 27 faces the mouth of the lower burner 21.

 Next, the operation in the above configuration will be described.

When the radiant heat source 16 and the lower burner 21 are ignited, first, the lower surface of the article 17 to be cooked is started to be blown from the blower 25 toward the air ejection part 23 at the same time as the ignition. Then, the air sent into the air ejection part 23 becomes an ejection flow from the air ejection hole 26 and flows out in a certain direction along the inclination of the wind direction control plate 24,
While controlling the direction of the flame formed by the flame hole row 22 of the lower burner 21, the hot air generated in the flame hole row 22 is transported forward from the opening 20 behind the heating chamber 15 and is placed on the grill 18 While uniforming the heat distribution on the lower surface of the placed article 17 to be cooked,
The upper surface of the object 17 is heated by radiant heat from the radiant heat source 16 due to ignition.

As described above, the upper surface and the lower surface of the food 17 are separately and simultaneously heated by radiant heat and hot air, respectively. At this time, the horizontal hot air formed by the lower burner 21 is heated by the heating chamber 15.
Since the sheet is conveyed from the rear to the front while maintaining its width substantially, the difference in heat distribution in the width direction of the heating chamber 15 is extremely small, that is, there is almost no temperature difference between the left, right, and center. Therefore, the unevenness of the food 17 due to radiation in the refrigerator does not occur.

Further, the difference in heat distribution before and after the heating chamber 15 can be further reduced by turning on / off or turning on the air from the air blower 25 to the air ejection unit 23 for a certain period of time and performing a weakening operation. Further, the amount of hot air formed by the flame of the lower burner 21 and the jet of the air jetting part 23 is
It only needs to heat the lower part of the door, and compared to the conventional forced convection oven, etc., it requires only a small air volume and low combustion amount, and as a result, the opening and closing door 13 is not heated.
Even if 13 is not made of double glass, sufficient safety can be ensured.

Effects of the Invention As is apparent from the above description of the embodiment, according to the present invention, a heating chamber having an opening / closing door, a radiant heat source provided above the heating chamber, a grill provided in the center of the heating chamber, and a grill are provided. A lower burner provided behind and outside the heating chamber below the mesh,
By providing a blower in which an air blowing portion is provided near or integrally with the lower burner and in parallel with the row of flame holes of the lower burner, the heat distribution in the width direction of the heating chamber below the grill can be made uniform. Further, in the front-back direction of the heating chamber, the heat distribution can be made uniform by controlling the flow rate of the blower, and the width of the front and rear heat distribution can be freely varied. Therefore, the entire upper and lower surfaces of the object to be cooked can be uniformly heated and good cooking without uneven grilling can be performed. In addition, since the lower surface can be subjected to limited heating in accordance with the size of the object to be cooked, there is no heating loss, and a low air volume and low combustion amount can be achieved as compared with conventional forced convection and the like. Therefore, it is possible to suppress an excessive rise in the temperature of the door, and it is possible to provide a low-fuel-consumption, low-cost gas cooking appliance with improved cooking performance, such as sufficient safety, without using a double-glazed door.

[Brief description of the drawings]

FIG. 1 is a side sectional view of one embodiment of a gas cooker of the present invention.
FIG. 2 is a partial sectional view showing a connection relationship between an air ejection portion and a blower of the embodiment, FIG. 3 is a front sectional view of a conventional gas grill, and FIG. 4 is a side sectional view of a conventional forced convection oven. is there. 13 Opening door, 15 Heating chamber, 16 Radiant heat source, 18
Grid, 21 ... Lower burner, 22 ... Fire hole array, 23 ... Air blowing part, 25 ... Blower.

Continuing from the front page (72) Inventor Hideki Kaneko 1006 Kadoma, Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. ) Surveyed field (Int.Cl. ⁶ , DB name) A47J 37/00-37/07

Claims (1)

(57) [Claims] A heating chamber having an opening / closing door; a radiant heat source provided above the heating chamber; a grille provided in the heating chamber; and a grille provided below the grille behind the heating chamber and outside the heating chamber. A gas cooker provided with a lower burner, and an air blower provided near the lower burner or integrally with the lower burner and having an air ejection portion disposed in parallel with the row of flame holes of the lower burner.