JPS5824095Y2 - cooking oven - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cooking oven of a type in which a closed heating chamber is housed within the oven body and indirect heating is performed from the outside of the heating chamber.

Conventionally, this type of oven houses a heating chamber within the oven body with a surrounding space, the lower space is a combustion chamber with an internal burner, and the space on the left, right and back side is the combustion chamber. The hot air space is connected to the hot air space, and the upper space is configured as a housing space for microwave irradiation equipment and other equipment, and the combustion hot air in the combustion chamber is guided to the hot air space and heated by an exhaust fan in the exhaust stack that connects to the hot air space. Types of ovens that indirectly heat the oven are known, but they have the disadvantage that the hot combustion air flowing into the hot air space tends to overheat the oven itself.

The purpose of the present invention is to provide an oven that eliminates such inconveniences, and a closed type heating chamber 3 having a front opening/closing door 2 is housed in an oven body 1 with a surrounding space. The space below the heating chamber 3 is formed into a combustion chamber 5 having an intake port 5a on the front side, and gas burners 4 that inject flame backward are installed in the combustion chamber 5 at intervals on both sides thereof. In addition, the left and right rear and rear spaces of the heating chamber 3 are used as a hot air space 6 connected to the combustion chamber 5, and the space above the heating chamber 3 is used for a microwave irradiation device and other devices. In the oven main body 1, an exhaust pipe 9 having an exhaust fan 8 is disposed on the back surface of the oven main body 1. An exhaust duct 10.10 is installed in the spaces 6, 6 and extends forward with a gap between the left and right side plates 3a, 3a of the heating chamber 3.
are communicated with the hot air spaces 6, 6 on both sides at openings 10a, 10a at the front end, and with the exhaust pipe 9 at openings 10b, 10b at the rear end.

The exhaust pipe 9 has openings 10b and 1 at the rear end of the air collection duct 9b extending to both left and right sides of the fan case 9a at the lower end.
0b.

The combustion chamber 5 is provided with a partition plate 11 extending from the front to the rear of the opening 10a at the front end of the exhaust duct 10 between the heating chamber 3 and the burner 4, so that the combustion hot air in the combustion chamber 5 is A short-circuit flow to the opening 10a is prevented, and the combustion hot air is uniformly flowed to the left, right, and back hot air spaces 6, so that the heating chamber 3 can be heated uniformly.

The partition plate 11 is continuous with the upper edge of the intake port 5a on the front surface of the combustion chamber 5 to prevent cold air from rising from the intake port 5a into the hot air space 6 in a short-circuit manner.

In the drawing, 12 indicates a fan motor attached to the back of the fan case 9a, and the motor 12 has an exhaust fan 8 attached thereto.
According to the insertion of the heating chamber 3 into the oven body 1, the output shaft 13 of the oven body 1 is extended and protruded forward through the through hole 14 formed in the back plate 1b of the oven body 1. is inserted into the heating chamber 3 from the bushing 3b on the back surface of the heating chamber 3, and the stirring fan 15 is attached to this.

In the drawing, 16 is the microwave irradiation window on the top of the heating chamber 3, and 17
indicates a control section on the side of the oven body 1.

Next, to explain its operation, according to the operation of the exhaust fan 8, the cold air sucked from both sides of the intake port 5a passes around the outside of the burner 4 as shown by the dotted line in FIG. Along the both side plates 1a, 1a, the both side plates 1a, 1
Exhaust duct on a) 10.10 front end opening 10 a,
10a, thus forming a flow of cold air on the side plates 1a, la.

On the other hand, the combustion hot air that is sucked into the combustion chamber 5 from the center of the intake port 5a and comes into contact with the flame is transferred to the gas burner 4 provided in the combustion chamber 5.
The gas burner 4 is a gas burner 4 that injects a flame toward the rear, and the gas burner is provided with a gap on both sides of the gas burner 4, so that the gas burner 4 is provided with a space on both sides of the gas burner 4, so that the gas burner 4 is provided with a space on both sides of the gas burner 4. After exchanging heat with the heating chamber 3, it flows into the openings 10a, 10a, and then into the exhaust duct 10.
The air is cooled by mixing with cold air in the air collection duct 9b and exhausted to the outside through the exhaust pipe 9.

Therefore, the oven body 1 has a cold air insulation layer and an exhaust duct)
The cooling effect within 10.10 reliably protects the device from overheating due to hot combustion air, and also prevents damage to the equipment accommodated in the upper housing space 7 due to overheating.

As described above, according to the present invention, exhaust ducts (10.10) extending into the hot air spaces 6, 6 on both the left and right sides are provided on the left and right side plates 1a, la of the oven main body 1, and
10.10 along the exhaust duct) 10.10, the cold air can reliably prevent overheating of the oven body 1 on the outside surface, and the exhaust duct) 10.10
can be assembled and prepared on both side plates 1a and 1a, and has the effect of facilitating assembly.

[Brief explanation of the drawing]

Figure 1 is a cutaway view of one example of implementing the present invention, and Figure 2 is a cross-sectional view of an example of the implementation of the present invention.
The cross-sectional side view taken along line I-II is III in Figure 1.
It is a front view taken along the line -III. 1...Oven body, 1a...Left and right side plates, 2...Opening/closing door, 3...Heating cabinet,
3a... Left and right side plates, 4... Burner,
5... Combustion chamber, 5a... Intake port, 6.
...Hot air space, 7...Accommodation space, 8...
...Exhaust fan, 9...Exhaust pipe, 10...
...Exhaust duct, 10a...Front end opening, 1
0b... Rear end opening.

Claims (1)

[Scope of utility model registration request] 1. A closed type heating chamber 3 having an opening/closing door 2 at the front is housed in the oven body 1 with a space around it, and the space below the heating chamber 3 is used as a combustion chamber having an air intake port 5a at the front. Room 5
A gas burner 4 that injects flame backward is installed in the combustion chamber 5 at a distance on both sides thereof, and spaces on the right and left rear and back sides of the heating chamber 3 are used as the combustion chamber 5. A hot air space 6 connected to the heating chamber 3 is formed, and the space above the heating chamber 3 is configured as a housing space 7 for a microwave irradiation device and other devices,
In the type in which an exhaust pipe 9 having an exhaust fan 8 is disposed on the back side of the oven body 1, the left and right hot air spaces 6, 6 are provided on the left and right side plates 1a, 1a of the oven body 1.
An exhaust duct (10.10) extending forward with a gap between the left and right side plates 3a, 3a of the heating chamber 3 is attached, and the exhaust duct) (10.10) is an opening 10a at the front end.
10a, and the hot air spaces 6.6 on both sides communicate with the exhaust pipe 9 at rear end openings 10b, 10b. 2. The combustion chamber 5 is provided with a partition plate 11 extending from the front between the heating chamber 3 and the burner 4 to an opening 10 a at the front end of the exhaust duct (10.10) and a rear position of the exhaust duct 10 a. A cooking oven as set forth in claim 1 of the utility model registration claim.