Multi-temperature-region ice-temperature fresh keeping storehouse and fresh keeping method for bergamot pears
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Solution Overview
Problem
Existing ice point temperature storage technologies for bergamot pears face challenges in accurately determining the ice point temperature, leading to potential freeze injury and suboptimal preservation due to temperature fluctuations, which affects the shelf life and quality of the fruit.
Innovation Solution
A multi-temperature-region ice point temperature fresh keeping storehouse with online detection and graded storage using four freezers set at specific temperatures (0° C., −1° C., −2° C., and −3° C.) connected level by level, allowing for precise temperature control and buffering to maintain bergamot pears near their individual ice point temperatures, reducing cold injury and extending shelf life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single temperature freezer is used for storage, then the construction and equipment investment is reduced, but the fresh keeping effect is limited and cannot meet different storage requirements
Solution Approach 1:
The storage system is divided into multiple temperature regions (0°C, -1°C, -2°C, -3°C) with separate freezers for different storage needs. This segmentation allows each region to be optimized for specific storage requirements while sharing common buffering resources, resolving the contradiction between simplified construction and effective fresh keeping.
2Duration of action of stationary object
If the storage temperature is set too low, then the shelf life is extended, but freeze injury occurs to the fruit
Solution Approach 1:
Different temperature zones (0°C, -1°C, -2°C, -3°C) are created to match the local quality requirements of different fruit batches. Each zone provides precisely the temperature needed for its stored fruits, preventing freeze injury while extending shelf life through localized temperature optimization.
Solution Approach 2:
The storage temperature parameter is dynamically adjusted based on the ice point temperature of the fruit. By changing the temperature parameter to match the fruit's specific ice point (determined through online detection), the system extends shelf life without causing freeze injury.
3Object-affected harmful factors
If the storage temperature is set too high, then freeze injury is avoided, but the shelf life is not maximized
Solution Approach 1:
The storage temperature parameter is precisely adjusted to match the ice point temperature of the fruit (detected online). This parameter optimization ensures the temperature is high enough to avoid freeze injury but low enough to maximize shelf life, resolving the contradiction between safety and effectiveness.
4Ease of operation
If the ice point temperature is not accurately determined, then the storage system is simpler to operate, but cold injury occurs and quality deteriorates
Solution Approach 1:
Online detection technology provides real-time feedback on the ice point temperature of the fruit. This feedback mechanism automatically determines the optimal storage temperature, maintaining quality while simplifying operation through automated temperature selection based on detected fruit characteristics.
Solution Approach 2:
The system uses online detection to automatically determine the ice point temperature and select the appropriate storage zone without manual intervention. The fruit essentially 'services itself' by having its properties detected and used to determine its optimal storage conditions, resolving the contradiction between operational simplicity and quality maintenance.
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
The system effectively prevents cold injury and maintains the quality of bergamot pears by ensuring storage temperatures are close to the ice point temperature, significantly reducing the cold injury rate to below 1% and prolonging shelf life while maintaining the fruit's original quality.
Implementation Method 1
The cooling region is provided with four freezers, namely, a first freezer in which a storage temperature is 0° C., a second freezer in which a storage temperature is −1° C., a third freezer in which a storage temperature is −2° C., and a fourth freezer in which a storage temperature is −3° C.
Implementation Method 2
a buffering channel for stabilizing a temperature, wherein the buffering channel is provided with a temperature rising buffering channel and a temperature falling buffering channel
Data Source
AI summary
Disclosed herein is a multi-temperature-region ice-temperature fresh keeping storehouse and a fresh keeping method for bergamot pears that includes a precooling region, a feeding and discharging channel, a cooling region, an ice temperature detection device, a grading device, a conveyer belt control device, an automatic storage device, and a temperature rise and fall buffering channel. The cooling region includes four freezers, with temperatures ranging from 0° C.-−3° C. The four freezers are connected level by level according to a temperature reduction rule. The present disclosure implements multi-temperature-region graded storage of bergamot pears according to the value of an ice point temperature of the bergamot pears, so that they are always stored close to the ice point temperature without freezing, thereby preventing freeze injury, and prolonging shelf life.