Tunnel Sterilization Dryer Zone Segmentation
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Solution Overview
Problem
Conventional tunnel-type oven devices for sterilization and drying in food and pharmaceutical industries face challenges in maintaining uniform heat distribution, leading to overheating and temperature differences across the heating chamber, which affects the uniformity of the sterilization process and can damage components.
Innovation Solution
The oven device incorporates air intake and return partition boards to divide the air flow into independent chambers, each equipped with a heater, hot air generator, diffuser fan cover, high-efficiency filter, and temperature probe, allowing for precise temperature control along the longitudinal axis through sequential air flow management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the length of the tunnel type oven is increased to meet capacity requirements, then the sterilization capacity is improved, but the temperature uniformity deteriorates and overheating occurs
Solution Approach 1:
The heating chamber is divided into multiple heating zones along the longitudinal axis, with each zone having its own heater and temperature probe. This segmentation allows independent temperature control in each zone, preventing overheating while maintaining high capacity through the extended oven length.
2Device complexity
If only one temperature probe is positioned in the middle of the heating chamber, then the device complexity is reduced, but the temperature control precision deteriorates
Solution Approach 1:
Multiple temperature probes are distributed across different heating zones along the longitudinal axis of the oven. Each probe monitors temperature in its specific zone, enabling precise localized control. This segmentation of measurement points directly addresses the limitation of single-point monitoring while maintaining manageable system complexity through modular zone control.
3Productivity
If the temperature in the heating chamber is increased to improve sterilization effectiveness, then the sterilization efficiency is improved, but the risk of damaging components increases
Solution Approach 1:
Different temperature levels are maintained in different heating zones along the longitudinal axis. Zones can be optimized for different purposes: higher temperatures for sterilization effectiveness in product areas, and lower temperatures in zones where heat-sensitive components are located. This local quality differentiation allows high sterilization efficiency while protecting components from thermal damage.
Solution Approach 2:
Temperature probes in each heating zone provide real-time feedback to control units, which adjust heater power accordingly. This feedback mechanism prevents temperature from exceeding safe thresholds for components while maintaining optimal sterilization temperatures in product zones, thus protecting reliability while preserving productivity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enhances the uniformity of hot air distribution, preventing overheating and ensuring consistent temperature across the oven, thereby improving the effectiveness and longevity of the sterilization and drying process.
Implementation Method 1
each the air intake chamber comprises a heater, and a hot air generator
Implementation Method 2
The heating principle is carrying out heat exchange through a heater and a circulating air flow
Implementation Method 3
a high temperature high efficiency filter
Implementation Method 4
a temperature probe positioned in the middle of a heating chamber of the oven which is used as the point of control to detect the temperature of air flow
Data Source
AI summary
An baking case body of tunnel type sterilization dryer comprises a case body (1), an air intake cavity (24) which is disposed in the case body (1), a conveyor mesh belt (7), and an air return channel (22). The conveyor mesh belt (7) is located between the air return channel (22) and the air intake cavity (24). The air intake cavity (24) is divided into two or more than two independent air intake chambers (21) by one or more than one air intake partition boards (11). A heater (9) is disposed in each air intake chamber (21), and a hot air generator (2), a diffuser fan cover (3), a high temperature and high efficient filter (4) and a temperature probe (5) are disposed sequentially in each air intake chamber (21) from top to bottom. Air return partition boards (15) are arranged in the air return channel (22), corresponding to the air intake partition boards (11). The air return channel (22) is divided into two or more than two air return cavities (23) by the air return partition boards (15). The exit end of the air return cavity (23) is located at the bottom of the heater (9). The structure of the baking case body of tunnel type sterilization dryer is simple and compact, and the uniformity of the hot air is good.