JP3242485U - Convection structure of combustion burner oven - Google Patents

Abstract

An object of the present invention is to generate spontaneous forced convection in an oven only with wind pressure and heat from a combustion burner without using electric power. SOLUTION: In the present invention, a flame 11 of a combustion burner 4 is passed through a flame tube 2 installed between an oven inner box 1 and a shielding plate 3, and high-temperature convection air 6 is passed from a heat dissipation hole 5 of the flame tube 2. emits As the high-temperature convective air 6 rises, the air pressure in the lower part of the chamber is reduced, and the low-temperature convective air 7 is sucked up, thereby enabling convection throughout the chamber. [Selection drawing] Fig. 1

Description

This invention relates to the structure of an oven that uses only a combustion burner for power, heats the inside of the oven with the combustion heat, and at the same time creates forced convection inside the oven with the wind pressure and chimney effect.

In the case of the existing convection type gas oven, the combustion heat of the gas burner is stirred by the power of the built-in motor, and the inside of the oven is forcibly convected to heat and cook. was necessary. Therefore, it is difficult to use in places without a power supply, and the equipment tends to be heavy and bulky, making it unsuitable for portability. Until now, there has been no convection structure that does not require complicated electrical equipment, is easy to carry, and provides sufficient heating capacity.

Japanese Patent Laid-Open No. 11-190520

The prior patent documents assume a structure using combustion burners and pipes as in the present invention. However, no consideration of convection is found in this document, nor is there any structure that could generate it. In addition, according to the prior patent document, it is assumed that the baking effect is due to the radiant heat from the pipe, and with this structure, the convection required by the present invention cannot be generated in the chamber.

The mechanism of the existing gas oven basically stores the heat of combustion in the oven and performs forced convection by motor power. Mounting such heat-vulnerable electrical equipment on equipment makes the structure of the equipment complicated and heavy, and development suitable for portability cannot be expected. In addition, since it does not operate in an environment where electricity cannot be obtained, it is extremely unsuitable for easy carrying for outdoor cooking.

The mechanism of the existing electric oven basically stores the heat of the electric heater installed in the main body in the oven and performs forced convection by the motor power. Electric ovens generally consume a lot of power and are heavy because they are made up of precision electronic equipment. For this reason, it is extremely unsuitable for carrying easily for outdoor cooking.

Primitive ovens exist that assume heating by a burner installed inside the chamber, but there is no mechanism for uniform convection of combustion heat inside the chamber, and they simply store combustion heat inside the chamber. It is a structure, not a structure that convects the inside of the refrigerator.

Problem to be solved

In the mechanism of convection of combustion heat by motor power, the equipment is complicated, heavy, and requires electric power, so it was not possible to provide a portable convection oven. This is intended to provide an effective convection structure in the oven chamber by using only a combustion burner and simplifying the structure.

How to solve the problem

We devised a forced convection structure for an oven that does not require a power supply. Combustion heat has a strong force that tends to rise. In addition, since the flame of the burner, which burns vigorously, also has wind pressure, we thought that by making good use of this wind pressure and changes in air pressure due to the chimney effect, we could achieve ideal convection in the refrigerator.

Effect of idea

The flame that has entered the flame guide tube is emitted as convection from the heat radiation hole at the top of the flame guide tube. The discharged high-temperature convection air rises between the inner wall and the shielding plate and enters the upper part of the chamber. At this time, the air pressure in the lower part of the chamber was lowered due to the chimney effect, and the air in the lower part of the chamber was sucked up, creating a spontaneous convection inside the chamber.

1 is a cross-sectional view of the present invention; FIG. 1 is a front view of the present invention; FIG.

A partial implementation will be described below with reference to the accompanying drawings. In FIG. 1, an oven inner box 1 and a shielding plate 3 are made of thin metal plates. The flame 11 from the burner 4 enters the flame tube 2 made of metal or heat-resistant material, and passes through the heat radiating hole 4 in the upper part of the flame tube 2 to become high-temperature convection air 6, which flows between the oven inner box 1 and the shielding plate 3. Rise. This upward movement of the high-temperature convection air 6 lowers the air pressure in the lower part of the chamber due to the chimney effect, sucks up the low-temperature convection air 7 that has lost heat, mixes with the high-temperature convection air 6 again, and circulates in the chamber. The flame guide tube 3 protects the flame of the burner from the air inside the refrigerator to prevent accidental fire. In addition, the chimney effect is also promoted by the rising air current caused by the flame tube 3 heated by the burner. A portion of the cold convection air 7 is pushed out by the pressure of the burner combustion and exhausted through the exhaust holes 8 .

1 Oven inner box 2 Flame guide tube 3 Shield plate 4 Combustion burner 5 Radiation hole 6 High temperature convection air 7 Low temperature convection air 8 Exhaust hole 9 Food to be cooked 10 Cooking tray 11 Flame

Claims (1)

A convection structure of a gas oven with heat supply holes and heat exhaust holes. The flame of a combustion burner is passed through a flame guide installed between the shield plate and the inside of the oven inner box, and the combustion heat is transferred to the flame guide. A convection structure characterized by generating convection in the refrigerator by releasing heat from the heat radiation hole.

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