JPS6318095B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention is a device in which high-temperature gas consisting of exhaust gas and air is sucked into a fan and blown into a roasting box for cooking. This relates to a forced heat circulation type gas oven whose structure aims to provide uniform heating.

Conventionally, this type of forced heat circulation gas oven was the 6th.
As shown in FIG. 7, a burner combustion chamber 41 is installed in a part of the roasting box 40, for example, in the lower part, and
The structure is also in the same roasting box 40. Originally, this type of gas oven made cooking quick, but on the other hand,
Due to the influence of the forced hot air fan 42, the flow of hot air from the outlet and the flow of hot air within the roasting box 40 are not equalized, which tends to cause uneven heating of the food in the roasting box 40. . Furthermore, as shown in FIG. 7, since a single open-area outlet 43 is formed on the left and right sides of the roasting box 40, the high-temperature gas directly hits the food, which tends to cause localized heating bias. , conversely, strong wind fan 4 near the center of the food
Near 2, there is a decrease in the temperature of the high-temperature gas, and there is a deviation in the heating of the food being cooked. 37 is a plate.

Therefore, the present invention allows high-temperature gas to flow indirectly to the food to be cooked, and regulates the air volume to easily eliminate the drawbacks of the conventional method and ensure reliable cooking.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

1 to 5 show embodiments of the present invention. 1 is an exterior case with an air vent 2 on the bottom;
3 is a roasting box whose front opening is opened and closed by a front door 4, and there is a hot air inlet 7 on the back of the roasting box 3 approximately in the center.
bulges out into the roasting box 3 on the left and right sides, and hot air blowing holes 9 (9a, 9b, 9c) and 10 (10a,
10b, 10c), and a hot air partition plate 12 having an exhaust hole 11 for discharging hot air at the top thereof. Reference numeral 16 denotes a heat source case which is provided on the back side of the hot air partition plate 12 and has a combustion chamber 13 at the bottom, a suction chamber 14 above this on the back side of the hot air partition plate 12, and a fan storage chamber 15 on the back side communicating with the intake chamber. , roasting box 3, hot air partition plate 12, and heat source case 16
are separate bodies, and are attached to the back of the roasting box 3 with a hot air partition plate 12 and a heat source case with screws. The combustion chamber 13 is located at the lower part of the heat source case 16, and has a combustion air inlet 1 in the peripheral wall.
7, a combustion gas vent 18 opening into the suction chamber 14 is formed in the top wall, and a gas burner 19 is housed therein. Further, the suction chamber 14 is formed so as to surround the hot air inlet 7 of the hot air partition plate 12 by the partition wall 20, and the fan 2 provided in the storage chamber 15 is
A suction port 22 is provided opposite to the suction side of 1. Furthermore, the hot air blowing holes 9 (9a, 9b, 9
c) 24 is an exhaust pipe connected to the upper exhaust hole 11 of the hot air partition plate 12, which constitutes a discharge system 23 communicating with the hot air partition plate 12.
Further, reference numeral 25 denotes a regulating plate having a hot fluid regulating hole 27 fixed to the edge of the intake port 7 of the hot air partition plate 12 via a screw 26 . Note that the hot air suction port 7 of the hot air partition plate 12 and the suction port 22 of the partition wall 20 are smaller than the outer diameter of the fan 21. 28 is a motor that drives the fan 21, 29 is a cold cutting fan, and these fans 21, motor 28, and storage chamber 1 which becomes a casing
5 and the like constitute a fan motor 30. The fan 21 is detachably attached to the shaft 31 of the motor 28 via a fan attachment screw 32. In the figure, numeral 33 indicates a gas controller, and numerals 34 and 35 indicate plates.

Further, there are hot air blowing parts 8 on the left and right sides of the hot air partition plate 12, and the hot air blowing parts 8 are trapezoidal and protrude toward the roasting box 3 side. Hot air blowing holes 9 (9a, 9b, 9c) 10 (10a, 1
0b, 10c). This hot air outlet 9 (9
a, 9b, 9c) 10 (10a, 10b, 10
c) is arranged in upper, middle and lower parts of the hot air blowing section 8, and blows out in the direction of the left and right side walls of the roasting box 3 and in the left and right horizontal directions. In addition, the hot air blowing section 8 is connected to the plate 3.
The hot air partition plate 12 and the hot air blowing part 8 that divides the hot air are integrally molded. Further, the left and right and upper and lower side walls 5 of the roasting box 3 are provided with hot air blowing holes 9 of the hot air blowing section 8.
Opposed to (9a, 9b, 9c), in order to facilitate the flow of hot air and to ensure a wide left and right distance from the plates 34 and 35, concave portions are formed by bulging toward the exterior case 1 side. The direction of the concave portion of the left and right side walls 5 of the roasting box 3 bulging toward the exterior case side and the volume of air blown horizontally to the left and right of the roasting box 3 are regulated to 60-70% and 30-40% of the blowout area. .

The amount of heat that flowed out from inside the roasting box 3 through the regulation hole 27 and the amount of heat that passed through the combustion gas passage 18 from the gas burner 1
The combustion gas from 9 flows into the suction chamber 14, is sucked by the fan 21 from the suction port 22, and is discharged through the discharge system path 2.
Flows to 3. Due to the merging action during this suction-discharge process and the stirring action of the fan 21, the two heat flows are sufficiently mixed and become uniform in temperature.

In the configuration of the hot air partition plate 12, the amount of mixed heat hits the hot air blowing part 8 and flows from the upper, middle and lower hot air blowing holes 9a to 9c, 10a to 10c in the direction of the left and right side walls 5 of the roasting box 3, and in the left and right horizontal directions. It's blown out. First, the lower part is blown out from the hot air blowing hole 9a, flows under the bottom surface of the dish 34, along the bulge of the side wall 5 of the roasting box 3, hits the front door 4, flows under the roasting box 3 and the bottom of the dish 34, and then the hot air It joins with the hot air blown out from the blowout hole 10a, and is sucked by the fan 21 from the space between the rear part of the plate 34 and the hot air partition plate 12. A portion flows between the plates 34 and 35 and the fan 21
is attracted by. The upper part is blown out from the hot air outlet 9c, flows over the top surface of the dish 35, through the recess in the side wall 5 of the roasting box 3, hits the front door, and is sucked in by the fan 21.
It flows through the ceiling of the roasting box 3 and the space above the plate 35, joins with the hot air blown out from the hot air blowing hole 10c, and passes through the space between the rear of the plate 35 and the hot air partition plate 12 to the fan 21. A portion is exhausted from the exhaust hole 11. A further portion flows between the plates 34 and 35 and is sucked in by the fan 21. The middle part is blown out from the hot air outlet 9b, flows between the plates 34 and 35, through the concave part of the side wall 5 of the roasting box 3 that bulges toward the exterior case, and is reversed at the front door 4 or merges with the above two mixed hot air. The heated air flows between the plates 34 and 35, merges with the hot air blown out from 10b, and is sucked in by the fan 21.

The hot air blown into the roasting box 3 once
It flows along the recess formed by expanding the side wall 5 toward the exterior case 1 side, and flows into the ceiling, bottom, and center of the roasting box 3, so that the high-temperature gas does not partially strongly hit the food immediately after being blown out. Since it creates a flow to the suction hole while indirectly enveloping the food, there is no local heating bias. Furthermore, the hot air blowing holes 10 (10a, 10b, 10c) blow horizontally to the left and right into the center of the refrigerator to supplement heating.
Uniform heating is always possible, and there is no unevenness in cooking. That is, since the side wall 5 of the roasting box 3 is a concave portion bulging toward the outer case 1 side, the plates 34 and 35
By widening the distance between the left and right sides, high-temperature gas will not directly hit the dishes 34 and 35 and the food to be cooked, and the hot air blowing part 8 will be moved from the side wall 5.
By restricting the airflow to the direction of the hot air and the left and right horizontal directions, the food is heated so as to envelop the food, and the temperature drop near the hot air partition plate is compensated for from the center of the food, so the food is heated evenly. It is something that can be done.

Furthermore, the ratio of hot air blowing holes 9 and 10 is 60 to 70% for blowing hole 9 and 30 to 40% for blowing hole 10.
Good results were obtained in the range of .

In other words, the food to be cooked is heated from the side walls and the front door, but since the temperature is lower in the center and near the hot air partition plate 12, more heat is sent to the side walls and the returned hot air is used. This is because

The amount of hot air blown into the roasting box 3 is as follows:
By changing the area of the blow-off holes 0b, 10c), the air volume can be divided into appropriate amounts, and the total blow-out air volume can also be increased or decreased. Furthermore, the hot air blowing section 8
By changing the size and shape of the trapezoid, and by changing the depth of the side wall 5 protruding toward the exterior case 1, the direction of the hot air can be controlled.
This allows for a design that matches the size of the roasting box 3 and the size of the plate.

Further, the roasting box does not require any complicated parts, and the inside of the box is easy to clean and can be used cleanly at all times.

As described above, in the present invention, the food is surrounded and heated by the high-temperature gas blown into the roasting box, so that the food can be heated uniformly without local heating deviation.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of a gas oven showing an embodiment of the present invention, Fig. 2 is a cross-sectional view thereof, Fig. 3 is a perspective view of a hot air partition plate, and Figs. A vertical cross-sectional view and a cross-sectional view thereof showing the flow, and FIGS. 6 and 7 are a vertical cross-sectional view and a front view of a roasting box of a conventional example. 3... Roasting box, 5... Side wall, 8... Hot air blowing part, 9 (9a, 9b, 9c)... Hot air blowing hole,
10 (10a, 10b, 10c)...Hot air outlet, 12...Hot air partition plate, 19...Burner, 21
...Juan.

Claims (1)

[Claims] 1. In a gas oven consisting of a combustion box equipped with a burner and a fan for sucking and discharging the burned high-temperature gas, and a roasting box for cooking with the high-temperature gas, the high-temperature gas is placed between the combustion box and the roasting box. The side wall of the roasting box is provided with hot air blowing holes on the left and right sides that divide and regulate the hot air directly in the forward direction in a direction substantially parallel to the side wall, and a partition plate with a hot air intake port is provided in the center. A forced heat circulation type gas oven in which a concave portion is formed by bulging out toward the outer case side.