JP2998250B2 - Gas cooker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas firing chamber for a household gas cooker.

[0002]

2. Description of the Related Art Conventionally, this type of gas cooker (double-sided gas grill) has an upper grill burner at the top of a baking oven, a grille near the center, a lower grill burner at both sides of the object to be cooked near the bottom, and a lower grill burner at the bottom. It is composed of a soup tray for receiving the broth dripped from the food. However, in this conventional configuration, in order to make the heat distribution on the lower surface of the object to be cooked uniform, air must be blown from just above the lower burners on both sides, which is complicated, difficult to manufacture, and expensive. In addition, since the lower grill burners described above are present on both sides of the inside of the firing chamber, there is also a problem that maintenance is difficult.

A conventional example will be described below with reference to FIG. As shown in FIG. 5, an upper grill burner 2 is provided in the upper part of the baking oven 1, a grill 3 is provided near the center, and lower grill burners 5, 5 'are provided on both sides of a lower part of the object 4 to be cooked. A juice tray 6 for receiving the broth of the food 4 is placed on the bottom. The flame 7 burned by the lower grill burners 5 and 5 ′ and the hot air from the upper grill burner 2 heat the food 4 to be cooked, and then are discharged out of the refrigerator through the exhaust holes 8.

[0004]

However, in this configuration, air from the fan motor 10 is blown to the upper part 9 of the lower grill burners 5, 5 'in order to obtain a uniform heat distribution on the lower surface of the object 4 to be cooked. It is configured to carry the heat of the flame 7 as far as possible. However, when the flame enters the firing chamber 1, the flame is pushed downward only because it is blown only from above, so the uniform flame heat distribution range is as follows. It becomes narrow. In order to obtain a uniform heat distribution on the entire lower surface of the object to be cooked, it is necessary to provide the burner flame holes 5, 5 'on both lower sides of the object to be cooked 4. For this reason, the burner was expensive to manufacture and difficult to maintain after use.

Accordingly, an object of the present invention is to provide a gas cooker in which a lower grill burner is provided only on one surface of the inner wall of the baking oven 1 so that the entire lower surface of the object to be cooked has a uniform heat distribution.

[0006]

According to the present invention, in order to achieve the above object, a blow hole for blowing hot air from a lower grill burner is provided on one surface of an inner wall of a firing chamber,
A fan motor for blowing air and an outer frame of a blowing duct having a lower grill burner are provided, and a hot air diffusing portion is provided so as to surround a ventilation hole facing the lower grill burner.

[0007]

According to the present invention, the air blown by the fan motor provided on the upstream side of the lower grill burner is supplied to the rectifying plate 1 by the above-described structure.
8 divides the air into the combustion chamber 14 and the air to cool the juice tray 6. The air blown to the combustion chamber passes through the straightening plate 18 and then passes through the two passages of the lower grill burner 5 and the outer frame 16, and the middle partition plate 20 and the lower grill burner 5. Reaches 7. When the hot air that has passed through the blower holes 12 provided on a part of the inner wall of the firing chamber 1 passes through the hot air diffuser 22 that almost completely surrounds the periphery of the blower holes 12, the flame speed and the blow speed are synergistic and are strong. The hot air is diffused without converging due to the negative pressure phenomenon generated near the inner peripheral wall of the hot air diffusing section 22 by obtaining the wind speed, and a uniform heat distribution 23 which is wide vertically and horizontally can be obtained.

[0008] In addition, with the above-described configuration, only one surface in the lower grill burner firing chamber needs to be installed, and the configuration is easy to maintain.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the gas cooker according to the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the firing chamber 1 has a grill door 11 which can be opened and closed at the front, an exhaust hole 8 at the upper rear, and an upper burner 2 at the upper part. Below, there is a grill 3 and a soup tray 6 on which the food 4 is placed. A blow hole 12 through which the flame 7 of the lower grill burner 5 burned in the combustion chamber 14 is blown out to a part of a rear wall surface of the baking oven 1 at a height between the grill 3 and the soup tray 6; A hot air diffusing section 22 is provided so as to surround the periphery of 12 and is attached to the wall of the firing chamber 1. Further, a cooling hole 13 for cooling the juice receiving tray 6 is provided below the blow hole 12. Hereinafter, description will be made based on FIGS. 1, 2, 3, 4, and 5.

The air blown by the fan motor 10 passes through a fan duct 15 and a blow duct outer frame 16.
Through an opening 17 provided in an upper portion (hereinafter referred to as an outer frame), the flow reaches a rectifying plate 18 having appropriate opening areas at both ends. The inside of the outer frame 16 is constituted by an intermediate partition plate 20 that divides into the combustion chamber 14 and the cooling chamber 19 while holding the straightening plate 16. The air that has reached the current plate is divided into the combustion chamber 14 and the cooling chamber 19 by the above-described configuration. Outer frame 16
In the lower grill burner 5 held so as to be located substantially at the center of the combustion chamber 14, one diverted air passes through a passage formed between the outer frame 16 and the lower grill burner 5 to the blow hole 12. Reach. Another diverted air is the partition plate 2
It passes through a passage formed between the lower grill burner 5 and the lower grill burner 5 to reach the ventilation hole 12. The air blown out to the blow hole 12 is synergistic with the flame 7 of the lower grill burner 5, increases the flow velocity, and increases the hot air diffusion part 22.
To. Since the hot air diffusing portion 22 surrounds the periphery of the hot air diffusing portion 22 almost completely, the hot air flows along the inner peripheral wall of the hot air diffusing portion 22 due to the occurrence of a negative pressure phenomenon, and then flows into the inside of the firing chamber 1. Can be diffused vertically and horizontally without converging to obtain a wide and uniform heat distribution 23. The air in the other cooling chamber 19 exits the cooling hole 13 and then cools the juice tray 6. The combustion exhaust gas of the lower grill burner 5 and the combustion exhaust gas of the upper grill burner 2 are discharged out of the combustion chamber 1 through an exhaust hole 8 provided above the rear part of the firing chamber 1.

[0012]

As described above, according to the gas cooker of the present invention, the following effects can be obtained. (1) As for the heat distribution on the lower surface to be cooked, a strong flow velocity is obtained due to the synergistic effect of the flame velocity and the blowing velocity provided in the hot air diffusion part provided around the ventilation hole of the baking oven, and the hot air flows along the inner peripheral wall of the hot air diffusion part. The upper, lower, left, and right sides are uniform with respect to the lower surface of the object to be cooked. (2) Uniform heat distribution on the lower surface of the object to be cooked can be achieved by installing the lower grill burner on only one surface, and the maintenance becomes extremely easy.

[Brief description of the drawings]

FIG. 1A is an overall sectional view of a gas cooker according to one embodiment of the present invention. FIG.

FIG. 2 is a perspective view of a back wall of a main part of a baking oven of the gas cooking device according to one embodiment of the present invention.

FIG. 3 is a rear perspective view of a gas cooker according to one embodiment of the present invention.

FIG. 4 is an external view of each part of a blowing unit of the gas cooker according to one embodiment of the present invention.

FIG. 5 is an overall sectional view of a conventional gas cooking device.

[Explanation of symbols]

 Reference Signs List 1 firing chamber 5 lower grill burner 10 fan motor 11 door 12 air vent 14 firing chamber 16 air duct outer frame 22 hot air diffusing unit

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideki Kaneko 1006 Kazuma Kadoma, Kazuma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-3-207318 (JP, A) JP-A-4- 9522 (JP, A) JP-A-1-219417 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47J 37/06 F24C 3/02 F24C 15/34

Claims (1)

(57) [Claims] 1. A box-shaped baking cabinet having a door which can be opened and closed on the front side for storing an object to be cooked, a combustion chamber, a lower grill burner provided in the combustion chamber, and air supplied to the combustion chamber. A fan motor, a blower hole provided on a part of the wall of the firing chamber, and a blowhole for blowing hot air obtained by the grill burner in the combustion chamber into the firing chamber, and a periphery of the blower hole. Gas cooker consisting of a hot air diffusing section provided in a vertical direction.