JPH04300512A - Gas cooker - Google Patents

Abstract

PURPOSE:To offer the constitution by which a thermal distribution of the lower face of an object to be cooked becomes wide and uniform. CONSTITUTION:On the upstream of the lower grill burner 5, a straightening vane 18 having different openings of plural lines in plural bent tongues 18a, 18b is provided. This cooker is constituted so that air fed from a fan motor is straightened, and pressure-governed by openings 21a, 21b, 21c and 21d provided on plural bent tongues 18a, 18b of this straightening wane 18 and fed to the upper and the lower parts of the lower grill burner 5. According to this constitution, combustion heat can be carried horizontally to a distant part, and a thermal distribution of the lower face of an object to be cooked can be made wide and uniform.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas delivery device for a domestic gas cooker.

0002

[Prior Art] Conventionally, this type of gas cooker (double-sided gas grill) has a grill burner at the top of the baking chamber, a grill grill near the center, lower grill burners located on both sides of the food to be cooked near the bottom, and a grill burner at the bottom. It consists of a saucepan that catches the grilling juices dripping from the food being cooked. However, with this conventional configuration, air must be blown from directly above the lower grill burners on both sides in order to uniformize the heat distribution on the bottom surface of the food being cooked, which poses problems such as being complex, difficult to manufacture, and expensive. was there.

A conventional example will be explained below with reference to FIG. As shown in FIG. 5, an upper grill burner 2 is provided in the upper part of the baking chamber 1, a grill grate 3 is provided near the center, and lower grill burners 5, 5' are provided on both sides of the lower part of the food to be cooked 4. A soup saucer 6 is placed at the bottom to receive the cooking juice from the food 4. The flame 7 burned by the lower grill burners 5, 5' and the hot air from the upper grill burner 2 heat the food to be cooked 4, and then are discharged to the outside of the refrigerator from the exhaust hole 8.

0004

[Problems to be Solved by the Invention] However, in this configuration, the heat distribution on the lower surface of the food to be cooked 4 is such that the hot air from the flames of the lower grill burners 5, 5' rises by natural convection.
If the width was wide, uniform heat distribution could not be obtained. FIG. 5 is a diagram showing a conventional example, and in order to eliminate the above-mentioned drawbacks, a lower grill burner 5,
A fan motor 10 blows air into the upper part 9 of the flame hole 7 at 5'. However, since the air is blown only from the upper part of the flame hole 7, the flame is pressed down from above, and the range of uniform heat distribution of the flame becomes narrow. Therefore, in order to obtain a uniform heat distribution over the entire lower surface of the object to be cooked, it is necessary to provide flame holes 5, 5' for the burner on both sides of the lower surface of the object to be cooked, which makes the burner expensive to manufacture, and Maintenance was also difficult as the burners were located on both sides.

[0005] An object of the present invention is to provide a gas cooking appliance in which the lower grill burner is used only on one side of the inner wall of the baking chamber 1 to provide uniform heat distribution over the entire lower surface of the food to be cooked.

[0006]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a box-shaped baking chamber which has a door that can be opened and closed in the front and stores food to be cooked; a combustion chamber that houses a lower grill burner and has a ventilation hole that blows combustion heat from gas combustion of the lower grill burner to the baking chamber; and a cooling hole that blows cooling air that cools the juice tray. and a rectifier plate that rectifies the flow of air, and the combustion chamber includes a first air passage provided between the lower grill burner and the outer frame of the air duct, the grill burner and a partition plate. and a second airflow path provided between the two airflow paths, and the baffle plate has a plurality of rows of air outlet openings corresponding to both of the airflow paths at one end at an upstream position of both airflow paths of the combustion chamber and the other end thereof. The cooling chamber has an opening that blows a certain amount of air into the cooling chamber.

[0007]

[Function] With the above-described structure, the present invention divides the air from the fan motor provided upstream of the lower grill burner into air into the combustion chamber and air into the soup pan for cooling by the rectifier plate. Air is blown into the combustion chamber through a first air duct consisting of a lower grille burner and an outer frame, a tongue piece with one end bent into multiple parts, a second air duct consisting of a middle partition plate and a lower grille burner, and both air ducts. It has independent ventilation openings facing each other, and blows air from above and below against the flame of the lower grill burner, so that the combustion heat is carried horizontally and far. The openings upstream of the tongues aim to equalize the air pressure distribution, and the openings downstream of the tongues aim to equalize the heat distribution on the lower surface of the food to be cooked. The upper opening downstream of the tongue piece is made slightly larger than the lower opening to suppress the upward flow of combustion heat due to thermal draft and to expand the heat distribution range. Further, the air blown from the cooling holes is used to cool the juice tray and the like.

[0008]

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

As shown in FIG. 1, the baking chamber 1 is equipped with a grill door 11 that can be opened and closed at the front, and an exhaust hole 8 at the upper part of the rear.
At the top, an upper grill burner 2 is provided which uses a ceramic porous plate as a flame forming part. Also, below is the food to be cooked 4.
There is a soup tray 6 on which a grill 3 is placed. A combustion chamber 14 is provided in a part of the rear wall surface of the baking chamber 1 at a height between the gridiron 3 and the soup tray 6. A ventilation hole 12 is provided so that the combustion heat 7 of the lower grill burner 5 burned in the combustion chamber 14 is blown out. Furthermore, cooling holes 13 for cooling the juice tray 6 are provided below the ventilation holes 12. Description will be given below based on FIGS. 1, 2, 3, and 4. FIG. 4 is a diagram of each part of the blower. Figures 2 and 3
is the upper opening 2 opened in the tongue piece 18b of the rectifying plate 18.
1c, lower grill burner 5 depending on the size of the lower opening 21d
It is a figure showing the temperature distribution behavior of the lower surface of the gridiron 3 of the isothermal line 7a of the combustion heat 7 of.

The air blown by the fan motor 10 passes through the fan duct 15 and passes through the air duct outer frame 16 (
(hereinafter referred to as an outer frame) through an opening 17 provided in the upper part, one end is bent into a plurality of parts, and an appropriate opening area 21a,
The current plate 18 has openings 21b, 21c, and 21d, and a suitable opening 21E at the other end. The inside of the outer frame 16 is constituted by a partition plate 20 that holds the baffle plate 18 and divides the combustion chamber 14 into a cooling chamber 19. The air that has reached the current plate 18 passes through the above-mentioned current plate 18.
With this configuration, the air is divided into a combustion chamber 14 and a cooling chamber 19. One end of the divided air flows into the openings 21a and 21b of the tongue piece 18a, in which one end of the rectifying plate 18 is bent into a plurality of shapes, on the upstream side.
The air blown from the fan motor 10 by the first
Next, perform rectification and pressure regulation. Next, it reaches the tongue piece 18b and the upper opening 2
The air that has passed through 1c passes through the first air passage I formed between the outer frame 16 and the lower grill burner 5, and reaches the air outlet 12. The air that has passed through the opening 21d of the tongue piece 18b passes through the second air passage II formed between the partition plate 20 and the lower grill burner 5, and reaches the air outlet 12. When the upper opening 21c of the tongue piece 18b is smaller than the lower opening 21d, the isothermal line 7a of the combustion heat 7 has an extremely high heat distribution on the grill 3 surface of the food to be cooked 4, which is high on the back side and low on the door side, as shown in FIG. It becomes bad. On the other hand, if the upper opening 21c of the tongue piece 18b of the current plate 18 is larger than the lower opening 21d, it will be lower on the back side and higher on the door side, as shown in FIG. As described above, by appropriately and arbitrarily adjusting the upper opening 21c and lower opening 21d of the tongue piece 18b, it is possible to carry the combustion heat 7 horizontally to a long distance and obtain a uniform heat distribution. The other branched air passes through an opening 21E provided at the other end 18c of the rectifier plate 18 and reaches the cooling chamber. Furthermore, the liquid flows from the cooling chamber 19 to the cooling hole 13 and cools the juice tray 6 housed in the baking chamber 1. Combustion heat 7 of the lower grill burner 5 and combustion exhaust gas of the upper grill burner 2 are discharged to the outside of the refrigerator from an exhaust port 8 provided at the rear upper part.

[0011]

[Effects of the Invention] As described above, the gas cooker of the present invention provides the following effects. (1) By adjusting the size of the plurality of rows of openings provided at one end of the rectifier plate, it is possible to perform predetermined rectification and pressure regulation, and it is possible to equalize the temperature on the bottom surface of the food to be cooked. (2) Since air is blown from above and below against the combustion heat, the combustion heat is carried over a long distance, and a gas cooker with an extremely wide heat distribution can be obtained with only one burner. (3) Since only one burner is required, maintenance is easy.

[Brief explanation of drawings]

FIG. 1: Overall sectional view of a gas cooker in one embodiment of the present invention.

[Fig. 2] Heat distribution behavior diagram when the back side becomes high temperature due to the size of the opening of the gas cooker in an embodiment of the present invention.

[Fig. 3] Heat distribution behavior diagram when the door side becomes high temperature due to the size of the opening of the gas cooker in one embodiment of the present invention.

[Figure 4
] External view of each part of a blower device for a gas cooker in an embodiment of the present invention

[Figure 5] Overall sectional view of a conventional gas cooker

[Explanation of symbols]

1　Firing chamber 5 Lower grill burner 6 Soup saucer 10 Fan motor 11 Door 12 Ventilation hole 13 Cooling hole 14 Combustion chamber 16　Blower duct outer frame 18 Current plate 19 Cooling room 20 Partition board I First air duct II Second ventilation path

Claims (1)

[Claims] Claim 1: A box-shaped baking chamber with a door that can be freely opened and closed on the front for storing food to be cooked, a fan motor for blowing air provided adjacent to the baking chamber, and a lower grill burner. a combustion chamber having a blowing hole for blowing combustion heat generated by gas combustion of a lower grill burner to the baking chamber; a cooling chamber having a cooling hole for blowing cooling air to cool the soup saucer; and a rectifying plate for straightening the air flow. The combustion chamber includes a first air passage provided between the lower grill burner and the outer frame of the air duct, and a second air passage provided between the grill burner and the partition plate. , the baffle plate has a plurality of rows of blow-off openings corresponding to both the air passages at one end and an opening for blowing a fixed amount of air into the cooling chamber at the other end at a position upstream of both air passages of the combustion chamber. Gas cooker consisting of: