JP3028556B2 - 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 A gas cooker of this type is equipped with an upper burner 2 having a ceramic porous plate or a wire mesh punched metal at a ceiling portion of a heating chamber 1 as shown in FIG. A grill 3 is provided substantially at the center of the room 1 and the food 4
And a lower burner 5 for forming a Bunsen flame disposed at the lower left and right side surfaces of the heating chamber 1 is provided.
There is a double-sided baking method using both of these burners. Among them, as shown in Japanese Utility Model Application Laid-Open No. 57-150323 shown in FIG. 5 and Japanese Utility Model Application Laid-Open No. 61-119006 shown in FIG. 6, a control for controlling the blowing direction of the combustion gas from the lower burner 5 is performed. The plate 6 was provided substantially perpendicular to the flow direction. On the other hand, as in a forced convection oven shown in FIG. 7, a heating chamber in which a grill 8 on which the object 7 is placed and a saucer 9 are stored.
A highly airtight opening / closing door 11 is provided in front of 10, and a heating chamber
In some cases, a circulation fan 12 is provided behind the heating chamber 10, a heating Bunsen burner 13 is provided at the bottom and outside of the heating chamber 10, and an exhaust port 14 is provided behind and above the heating chamber 10.

Problems to be Solved by the Invention However, in such a gas cooker, good cooking results could not always be obtained. For example, in the grill of the double-sided baking type shown in FIG. 4, the upper and lower surfaces of the object to be cooked 4 are simultaneously heated and cooked by the upper burner 2 and the lower burner 5, respectively. The jet velocity of the flame and the combustion gas was extremely low, and the heat of combustion from the left and right lower burners 5 did not easily reach the center of the heating chamber 1, and it was difficult to balance the left and right jets. In particular, as the width L of the heating chamber 1 increases, the tendency becomes more remarkable, and the grilled state of the lower surface of the object to be cooked 4 varies extremely between left and right, or between the side and the center, and a good cooking result is obtained. I couldn't do that. Above all, the difference in the degree of burn between the side portion and the central portion is large. To solve these problems, a system as shown in FIGS. 5 and 6 was employed. Since the direction is unambiguous, the flow direction is difficult to be wide and uniform, and has not been a sufficient solution. Furthermore, since the lower burner protrudes from the side surface, the configuration of the inner wall surface of the heating chamber 1 is complicated, and cleaning is difficult.

In the forced convection oven shown in FIG. 7, the combustion heat of the heating Bunsen burner 13 is forcibly circulated inside the heating chamber 10 by the circulation fan 12 so that the food 7 is heated.
In order to maintain a uniform heat distribution near the object to be cooked 7, it is necessary to increase the air volume of the circulation fan 12 and the combustion volume of the Bunsen burner 13 for heating. In comparison, the amount of combustion per heating volume is 1.5
Not only is it necessary to double or double the size, but also the airtightness of the door 11 is required to increase the amount of circulating air, and the door 11 has to be made of double glass from the viewpoint of safety. Furthermore, from the viewpoint of grilling performance, the amount of water in the food 7 such as fish easily evaporates due to an increase in the air volume, and the finished product has a crisp feeling, and the tail of the fish is also easy to burn off and is not necessarily good. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide a gas cooker having good cooking performance and a simple configuration.

Means for Solving the Problems In order to achieve the above object, the present invention provides a heating chamber having an opening / closing door in the front, an upper burner provided above the heating chamber, and a baking provided substantially in the center of the heating chamber. A lower burner having a mesh, a plurality of flame holes facing the heating chamber from a rear wall surface of the heating chamber below the grill, a blowing device for forcibly sending secondary air for combustion from around the lower burner, and the lower burner A plurality of wind direction control plates for controlling the flow of the flame and the combustion gas in a substantially horizontal direction and an obliquely upward direction are provided in an opening located on the downstream side of the flame forming portion.

According to the present invention having the above-described configuration, the combustion heat from the flame formed by the lower burner is forced to be supplied from around the burner.
Enclosed by the next air flow, stabilizes the flame and promotes the mixing of combustion gas and air, and as a high-temperature gas flow, is more efficient than the lower part of the grill, and the lower surface of the object to be cooked from the lower burner to the door is uniform over a wide area. Can be cooked. In addition, since the object to be cooked can be heated simultaneously from both the upper and lower surfaces by heating from the upper burner, an extra amount of air or a combustion amount is not required, and the cooking performance is extremely good.

Embodiment An embodiment of a gas cooker according to the present invention will be described below with reference to FIG.

As shown in the figure, the heating chamber 15 has an opening / closing door 16 made of a glass door at a front part, an exhaust port 17 at an upper rear part, and an upper burner 18 having a ceramic porous plate as a flame forming part at an upper part. . At the bottom, there is a saucer 21 provided with a grill 20 on which the object 19 is placed. On the rear wall surface of the heating chamber 15 at a height between the grill 20 and the pan 21, an opening 23 having a plurality of wind direction control plates 22 each having an angle in a substantially horizontal direction and an obliquely upward direction is formed. A lower burner 25 made of a substantially linear Bunsen burner having a plurality of flame holes 24 faces from the opening 23 toward the heating chamber 15 from outside the heating chamber 15. The lower burner 25 is surrounded by an air chamber 26, and is located in a secondary air flow path forcibly supplied from an air blower 27.

With the above configuration, the food 19 placed on the grill 20
Is cooked from the upper burner 18 and the lower burner 25 in the heating chamber 15. At this time, the upper burner 18 is
, The upper surface of the article to be cooked 19 can be heated and cooked uniformly. The lower burner 25 forms a flame in the flame hole 24, which is mixed in the air chamber 26 with the secondary air forcibly supplied from the blower 27, and as a high-temperature gas flow, the object 19 and the It flows on the lower surface in parallel to the grill 20. At this time, the flame stabilizes in the process of being mixed with the secondary air in the air chamber 26, and the air-fuel mixture is rapidly gasified to a high temperature and the volume increases sharply, so that the blowing speed at the opening 23 is extremely high. , And the reach is significantly increased. Therefore, a high-temperature gas can flow from the rear of the heating chamber 15 to the door 16 with a relatively small amount of air. In addition, it is possible to suppress the influence of the natural draft in the lower portion of the grill 20. Furthermore, since the flame from the lower burner 25 is peeping into the heating chamber 15, the visual effect is improved, and the amount of radiation to the rear of the article 19 to be cooked is increased. This contributes to the improvement of the baking performance in the rear part of the heating chamber 15 having a low temperature. Also, a plurality of wind direction control plates provided in the opening 23 and having angles of substantially horizontal and obliquely upward directions, respectively.
Since the flow direction of the high-temperature gas is diversified by 22, the heat distribution to the place where the heat transfer to the object 19 is not good is also improved.
2 and 3 show an embodiment in which the wind direction control plate 22 is mounted. Further, the high-temperature gas flow is conveyed in one direction from the rear part to the front part of the heating chamber 15, so that there is no interference of the burner. Will not happen. In addition, this high-temperature gas flow only needs to heat the lower surface of the article to be cooked 19, and compared to a forced convection oven or the like, requires a low air volume and low combustion amount, and as a result, does not heat the opening and closing door 16, Even without double glazing, safety can be ensured and the appearance is simple.

Effects of the Invention As described above, according to the gas cooker of the present invention, the following effects can be obtained.

(1) By the high-temperature gas flow blown out from the lower burner in various directions, the object to be cooked is uniformly and freshly baked, so that a double-sided gas cooker with good baking performance can be provided.

(2) The configuration of the side portion of the heating chamber and the opening / closing door are simplified, and the cooker is easy to clean and easy to clean.

(3) Since a difference in the temperature distribution in the horizontal direction of the heating chamber hardly occurs, a wide gas cooker can be provided.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a gas cooker according to one embodiment of the present invention, FIGS. 2 and 3 are front sectional views of the gas cooker, and FIGS.
The figure is a sectional view of a conventional gas cooking device. 15… Heating room, 18… Upper burner, 19… Cook, 20
…… Grill net, 22 …… Wind direction control board, 25 …… Lower burner.

Continued on the front page (72) Inventor Ryoji Shimada 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (72) Inventor Koji Furuichi 1006 Odaka Kazuma Kadoma City, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (72 ) Inventor Masao Hara 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-1-219417 (JP, A) Rinko 60-9603 (JP, Y2) Rinko Akira 56-90 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24C 3/02 A47J 37/06

Claims (1)

(57) [Claims] A heating chamber having an opening / closing door in front of the heating chamber; an upper burner provided above the heating chamber; a grille provided substantially at the center of the heating chamber; and the heating chamber below the grille. A lower burner having a plurality of flame holes facing the heating chamber from a rear wall surface of the lower burner, a blowing device for forcibly sending secondary air for combustion from around the lower burner, and a downstream side of a flame forming portion of the lower burner. A gas cooker provided with a plurality of wind direction control plates for controlling a flow of a flame and a combustion gas in a substantially horizontal direction and an obliquely upward direction in an opening located at a position.