A baking device based on fuzzy PID control and a baking method thereof

By setting up a zoned heating system with fuzzy PID control and a circulating exhaust mechanism in the tunnel oven, the problem of uneven temperature in the tunnel oven was solved, and the energy consumption of the heater was balanced and the food baking effect was improved.

CN119969432BActive Publication Date: 2026-06-23ZHANGZHOU INST OF TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHANGZHOU INST OF TECH
Filing Date
2024-12-25
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Traditional tunnel furnaces suffer from uneven hot air circulation due to the temperature at both ends of the furnace being lower than that in the middle section because of the inlet and outlet. This results in high energy consumption and short service life of the heaters, and the hot air circulation system struggles to maintain temperature uniformity.

Method used

The baking device adopts fuzzy PID control, and through the partitioned tunnel oven and the use of bidirectional centrifugal fans and circulating exhaust mechanism, it realizes the air circulation or hot gas exhaust of heating zone 1, heating zone 2 and heating zone 3. Combined with the air guide box and the heart-shaped oven top and bottom design, a longitudinal circulation loop is formed to ensure temperature uniformity.

Benefits of technology

It achieves dynamic temperature balance in different zones of the tunnel oven, reduces energy consumption, extends heater lifespan, and improves the uniformity and efficiency of food baking.

✦ Generated by Eureka AI based on patent content.

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    Figure CN119969432B_ABST
Patent Text Reader

Abstract

The application provides a baking device based on fuzzy PID control and a baking method thereof, which comprises a tunnel furnace, a conveying mechanism and a heating mechanism. The tunnel furnace comprises an outer furnace body and an inner furnace body. The outer furnace body is arranged around the outer periphery of the inner furnace body. One side of the inner furnace body is provided with a feeding port, and the other side of the inner furnace body is provided with a discharging port. The conveying mechanism is arranged between the feeding port and the discharging port of the inner furnace body. The heating mechanism is arranged in the inner furnace body and below the conveying mechanism. The inner furnace body is sequentially provided with a heating first zone, a heating second zone and a heating third zone along the feeding direction. The application can guide the heat energy of the heating second zone of the tunnel furnace to the heating first zone and the heating third zone through a bidirectional centrifugal fan. Because the air in the heating second zone flows to the heating first zone and the heating third zone, the pressure of the heating second zone is reduced. Under the action of the pressure difference, the air in the heating first zone and the heating third zone flows to the heating second zone, thereby forming a dynamic circulation loop.
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