Air return device avoiding heat loss in case of opening of oven

Abstract

The invention relates to an air return device avoiding heat loss in case of the opening of an oven. The air return device is arranged between the upper wall of an oven cavity and the outer shell and provided with an eccentric fan, a motor and a clapboard, wherein the eccentric fan is arranged at the rear side of the upper wall of the oven, the eccentric fan is driven by the motor, the clapboard is arranged on the cavity, one end of the clapboard is arranged at the upper end of the eccentric fan, the other end of the clapboard is arranged at the upper edge of a front opening of the cavity, both sides of the clapboard are provided with lateral plates for closing openings at both sides of the clapboard so that a wind-guiding space is formed between the clapboard and the upper wall of the cavity, the motor is arranged on the lateral plates, a shaft of the eccentric fan penetrates through the lateral plates and is connected with a motor shaft, and a start button of the motor is arranged an oven door for closing the front opening of the oven cavity and is set to be triggered when the oven door is opened so that the eccentric fan is driven by the motor to rotate. The invention can enable hot air between the oven cavity and the outer shell to rapidly enter the cavity, effectively avoids heat loss, prevents the temperature in the cavity from dropping and greatly improves the baking effect.

Description

technical field [0001] The invention relates to an oven. In particular, it relates to a return air device that can prevent heat loss when the oven door is opened, has high heating efficiency and good safety, and prevents heat loss when the oven door is opened. Background technique [0002] The oven is a closed box used for baking food. There are mainly two types: vertical and horizontal. Among them, the vertical is more suitable for families with small kitchens, because it does not occupy the floor area, but the space volume; the horizontal The ones are suitable for families with larger kitchen areas. In addition, from the perspective of the shell of the electric oven, it can be divided into two types: metal baking paint and plastic spraying. Whether it is a vertical oven or a horizontal oven, most of them include a cavity for cooking food and a casing wrapped outside the cavity. The box includes: a heater, a fan for forcing the hot air generated by the heater to circulat...

AI Technical Summary

Problems solved by technology

[0006] However, in the process of baking food in the existing oven, if the oven door 3 is opened halfway to check the baking situation, heat loss will be caused, and the temperature in the cavity 1 will drop by 45 degrees Celsius, and a temperature recovery process is required to continue baking

This reduces the efficiency of baking and causes energy loss

At the same time, due to the heat generated by baking, the temperature of the shell wrapped outside the cavity 1 is too high, which is easy to cause burns and poses a safety hazard

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