JP2762734B2 - Gas cooker - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-sided gas cooker that uses gaseous fuel such as city gas or liquefied petroleum gas and has burners at the top and bottom.

2. Description of the Related Art Conventionally, a gas cooker of this type includes an upper burner 22 having a ceramic porous plate or a wire mesh or punched metal as a flame outlet 35 on a ceiling portion of a heating chamber 21 like a gas grill shown in FIG.
Are installed, and a grill 23 is provided substantially at the center of the heating chamber 21 so that the object to be cooked 24 can be placed thereon. A lower burner 25 that forms a Bunsen flame is provided below the left and right sides of the heating chamber 21. Thus, there is a double-sided baking method using both the upper burner 22 and the lower burner 25.
Among them, as disclosed in Japanese Utility Model Application Laid-Open No. 57-150323 shown in FIG. 4 and Japanese Utility Model Application Laid-Open No. 61-119006 shown in FIG. 5, the blowing direction of the combustion gas from the lower burner 25 is controlled. Some control plates 26 are provided substantially perpendicular to the flow direction of the combustion gas. On the other hand, as in a forced circulation oven shown in FIG. 6, a highly airtight opening / closing door 31 is provided in front of a heating chamber 30 containing a grill 28 on which the object 27 is placed and a tray 29, In some cases, a circulation fan 32 is provided behind the heating chamber 30, a Bunsen burner 33 for heating is provided outside the bottom of the heating chamber 30, and an exhaust port 34 is provided above the heating chamber 30.

Problems to be Solved by the Invention However, in such a conventional gas cooker, good cooking results could not always be obtained. For example, in the grill of the double-sided baking type shown in FIG.
The upper and lower surfaces of 24 were simultaneously heated and cooked by the upper burner 22 and the lower burner 25, respectively. But the lower burner
25 was spontaneous combustion, and its flame and combustion gas ejection speed were configured to be extremely low. Therefore, it is difficult for the combustion heat from the left and right lower burners 25 to reach the center of the heating chamber 21, and it is also difficult to balance the left and right ejection balance. In particular, as the width L of the heating chamber 21 increases, the tendency becomes more severe, and the grilled state of the lower surface of the object 24 is left and right, or if it is extreme at the sides and the center, the entire surface of the object is cooked. It was difficult to obtain good cooking results. Above all, the difference between the scorching between the side portion and the central portion is large, and FIG. 4 and FIG.
A system as shown in the figure was considered. However, it is difficult to control the flow direction of the combustion gas because the blowing speed of the combustion gas is low and the control of the suction direction of the combustion gas is almost perpendicular to the blowing direction. In addition, since it is difficult to diversify the flow direction, it has not been a sufficient solution, for example, it is difficult to maintain a wide and uniform heat distribution in the heating chamber. Further, since the lower burner is ejected from the side surface and the end of the control plate 26 projects into the heating chamber 21, the structure of the inner wall surface of the heating chamber 21 becomes complicated, and the inside is difficult to clean. there were. When cleaning, the control board
The end of 26 was dangerous, as it could hurt your hand.

In the forced circulation oven shown in FIG. 6, the heating heat of the Bunsen burner 33 is forcedly circulated inside the heating chamber 30 by the circulation fan 32 to heat the object 27 to be cooked. In this method, it is necessary to increase the air volume of the circulation fan 32 and the combustion amount of the heating Bunsen burner 33 in order to maintain a uniform heat distribution in the vicinity of the cooking object 27. The burning amount of 1.
About 5 to 2 times is required. In addition, since the amount of circulating air is large, the airtightness of the door 31 is required. Since the door 31 is heated to a high temperature, the door 31 needs to be made of double glass from the viewpoint of safety. In addition, from the viewpoint of grilling performance, since the circulation air volume is large, the moisture of the food 27 with a lot of moisture such as fish easily evaporates, it burns dry and crisp, and the tail of the fish also burns easily, and it is not necessarily It was not good cooking.

An object of the present invention is to solve such a problem, and an object of the present invention is to provide a double-sided baking gas cooker in which the whole object is uniformly burned and whose configuration is simple.

Means for Solving the Problems In order to achieve this 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 mesh, a lower burner having a plurality of flame holes facing the heating chamber from a rear wall surface of the heating chamber below the grill, and a blower for forcibly sending secondary air for combustion to an air chamber around the lower burner. A hot air outlet is provided on the downstream side of the flame forming portion of the lower burner, and a plurality of projections are provided near a flame hole of the outlet.

Action With this configuration, the combustion heat generated from the flame formed by the lower burner is wrapped by the forced secondary air flow supplied from around the burner, stabilizing the flame, promoting the mixing of the combustion gas and air, and Form a flow. The high-temperature gas stream is uniformly flowed under the grill to heat the object to be cooked efficiently. Moreover, the lower surface of the object from the lower burner to the door can be cooked uniformly over a wide range. In addition, since the upper surface of the object to be cooked is simultaneously heated by heating from the upper burner, it is possible to simultaneously heat the upper and lower surfaces.

As a result, cooking does not require large amounts of air or fuel,
Extremely efficient cooking performance can be realized.

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

As shown in the figure, a heating chamber 1 has an opening / closing door 2 made of a glass plate at a front part, an exhaust port 3 at an upper part at a rear part, and an upper burner 4 having a ceramic porous plate as a flame forming part at an upper part.
Is provided. At the bottom of the heating chamber 1, there is a saucer 7 provided with a grill 6 on which the object 5 is placed. This grill 6
On the rear wall surface of the heating chamber 1 at an intermediate height between the heating chamber 1 and the receiving tray 7, an outlet 9 provided with a plurality of squeezed projections 8 at the front is formed. A lower burner 11 composed of a Bunsen burner in which a plurality of flame holes 10 are arranged in a substantially linear shape from the outside of the heating chamber 1 toward the inside of the heating chamber 1 through the outlet.
Is arranged. Also, this lower burner 11 is
It is surrounded by 12 and located in the flow path of the secondary air forcibly supplied from the air blower 13.

Next, the operation of the gas cooker configured as described above will be described. The object 5 to be cooked placed on the grill 6 is
Inside, both sides are heated and cooked from the upper burner 4 and the lower burner 11. At this time, since the burner 4 substantially covers the entire surface of the object 5 to be cooked, the upper surface of the object 5 can be cooked uniformly. Further, the lower burner 11 forms a flame in the flame hole 10, and the flame is mixed with the secondary air forcedly supplied by the blower 13 in the air chamber 12, and as a high-temperature gas flow, the material 5 and the The flow is parallel to the grill 6 and flows along the lower surface of the object 5 to be cooked. The combustion of the flame is stabilized in the process of being mixed with the secondary air in the air chamber 12, and the air-fuel mixture of the flame and the secondary air is rapidly gasified to a high temperature and the volume is rapidly increased. The blowing speed at 9 is very high and the reach of the hot gas stream is significantly increased. Therefore, a high-temperature gas can flow from the rear part of the heating chamber 1 to the door 2 with a relatively small amount of air. Due to the flow of the high-temperature gas, turbulence of the high-temperature gas due to a natural draft generated below the grill 6 can be suppressed. Further, since the flame injected from the lower burner 11 is blown into the heating chamber 1, the flame can be visually recognized through the glass of the door. In addition, the amount of radiant heat to the rear of the object 5 increases. Furthermore, the residence time of the high-temperature gas flow is shortened, and the baking performance at the rear of the heating chamber 1 which has conventionally had relatively low heat transfer is improved.
Also, the flow direction of the high-temperature gas is easily diversified and stabilized by the plurality of throttle-shaped projections 8 provided in front of the outlet 9. Therefore, the heat transfer in the portion where the heat transfer to the object 5 is not good is improved, and the heat distribution is also improved. Since the projection 8 has a drawn shape, it is resistant to thermal deformation, and moreover,
Even when the heating chamber 1 is cleaned, deformation is unlikely to occur, and cleaning is facilitated. Further, the flow of the high-temperature gas is stabilized, and good baking performance can be maintained even when used for a long time. FIG. 2 shows the mounting state of the projection 8. As can be seen from the figure, the hot gas flow flows in one direction from the rear to the front of the heating chamber 1,
The interference between the flame of the burner and the hot gas flow is eliminated, and the heating chamber 1
The temperature variation in the inside becomes extremely small, and the temperature distribution is improved, so that the burning unevenness that has occurred at a specific place of the article to be cooked 5 does not occur. The high-temperature gas flow only needs to heat the lower surface of the article 5 to be cooked, and can perform cooking with a low air volume and a low combustion amount as compared with a forced circulation oven or the like. As a result, the opening and closing door 2 is heated to a high temperature. Therefore, the temperature of the glass plate can be maintained at a safe temperature and safety can be ensured, and the appearance can be simplified without using double glass as in the related art.

In the present embodiment, a protrusion having an aperture shape is provided in the vicinity of the outlet of the lower burner. However, the shape of this projection is not limited to the aperture shape. But it doesn't matter.

Effects of the Invention As is clear from the above description of the embodiment, according to the gas cooker of the present invention, the following effects can be obtained.

(1) The high-temperature gas flows diffused and blown out in various directions by the protrusions provided in front of the lower burner, so that the food can be baked uniformly and freshly without losing moisture, and both sides have good baking performance. A baked gas cooker can be provided. In addition, the projection provided immediately before the lower burner is formed in a shape that is unlikely to be deformed even when exposed to a high temperature due to a flame, so that it is possible to maintain good grilling performance even when used for a long time.

(2) The configuration of the side of the heating chamber and the opening / closing door is simplified,
It is a safe cooker with excellent appearance, easy to clean, and not to hurt your hands during cleaning.

(3) Since the temperature distribution in the horizontal direction in the heating chamber becomes uniform, a wide and wide gas cooker can be provided.

[Brief description of the drawings]

1 is a side sectional view of a gas cooker according to one embodiment of the present invention, FIG. 2 is a front sectional view of the same, FIG. 3 is a front sectional view of a main part of a conventional gas cooker, and FIG. FIG. 5 is a side sectional view of a gas cooker having a control plate, FIG. 5 is a side sectional view of a gas cooker having the same row of flame control plates, and FIG. 6 is a side sectional view of the forced circulation gas cooker. 1 ... heating room, 4 ... upper burner, 5 ... cooking object, 6
…… Grill net, 8… protrusion, 9… outlet, 10… flame outlet,
11… Lower burner, 12… Air chamber, 13… Blower.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Ryoji Shimada 1006 Kadoma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (72) Inventor Masao Hara 1006 Kadoma Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. No. (72) Inventor Yoshiteru Kagomoto 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (58) Field surveyed (Int.Cl. ⁶ , DB name) A47J 37/06 366 F24C 3/02

Claims (1)

(57) [Claims] 1. A heating chamber having an opening / closing door at the front, an upper burner provided above the heating chamber, a grill provided substantially at the center of the heating chamber, and the heating chamber below the grill. A lower burner having a plurality of flame holes facing the heating chamber from a rear wall surface of the lower burner; a blower for forcibly sending secondary air for combustion to an air chamber surrounding the lower burner; and a flame of the lower burner. A gas cooker provided with a hot air outlet on the downstream side of the forming part and a plurality of projections provided near a flame hole of the outlet.