Warehouse Rack Air Sealing for Uniform Pallet Heat Transfer
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Solution Overview
Problem
Existing freezer warehouse systems face inefficiencies in maintaining consistent airflow through palletized product stacks due to irregular spacer configurations, leading to heat transfer inefficiencies and increased energy expenditure.
Innovation Solution
A racking system with resiliently flexible side seals and an air dam mechanism that forms a tight seal around pallet assemblies, ensuring efficient airflow through the pallet stacks with minimal leakage, even with unevenly stacked rows, and automatically compensates for vacant bays to maintain pressure differentials without increasing fan power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If irregular spacer configurations are used in pallet assemblies, then ease of loading and stacking flexibility is improved, but airflow consistency and heat transfer efficiency deteriorate
Solution Approach 1:
The patent employs flexible side seals made of resilient material that can deform to accommodate irregular spacer configurations and unevenly stacked rows. These seals maintain airtight sealing while adapting to various loading patterns, thus preserving both loading flexibility and airflow consistency without requiring rigid structural constraints.
2Loss of energy
If tight sealing around pallet assemblies is implemented, then airflow leakage is reduced, but system complexity increases due to additional sealing components
Solution Approach 1:
The patent utilizes flexible side seals that integrate seamlessly with the existing racking structure. These seals are mounted on the racking members and automatically conform to the pallet assembly contours, providing effective sealing without requiring complex mechanical systems or multiple discrete components.
Solution Approach 2:
The flexible side seals are designed to automatically adjust and seal against the pallet assembly when inserted into the racking system. The resilient material self-adjusts to maintain sealing contact, eliminating the need for additional actuators, sensors, or complex control mechanisms to ensure airtight closure.
3Reliability
If air dams are added to compensate for vacant bays, then pressure differential maintenance is improved, but device complexity increases
Solution Approach 1:
The patent implements movable air dams that can dynamically adjust their position based on bay occupancy status. When a bay is vacant, the air dam moves to block excess airflow; when occupied, it retracts to allow proper airflow through the pallet assembly. This dynamic adaptation maintains pressure differential stability without requiring complex control systems.
Solution Approach 2:
The air dam mechanism is designed to automatically respond to bay occupancy conditions through pressure differential changes or mechanical triggers. The system self-regulates airflow compensation without external control signals, sensors, or actuators, thereby maintaining reliability while minimizing added complexity.
4Adaptability or versatility
If resiliently flexible side seals are used to accommodate uneven stacking, then adaptability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent employs resilient side seals made from flexible materials that can deform to accommodate variations in pallet assembly dimensions and uneven stacking patterns. The flexibility of these seals compensates for manufacturing tolerances and loading irregularities, providing effective sealing without requiring extremely precise fabrication tolerances.
Solution Approach 2:
The side seals are designed with varying degrees of resilience and flexibility through material selection and cross-sectional geometry. This allows the seals to adapt to different stacking conditions while maintaining sealing effectiveness, reducing the need for multiple seal types or highly precise manufacturing across different operating conditions.
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 achieves high-efficiency airflow management with reduced energy consumption by minimizing air leakage and optimizing airflow pathways, allowing for effective heat transfer across palletized products while accommodating uneven stacking and varying occupancy levels.
Implementation Method 1
resiliently flexible side seals
Implementation Method 2
maintain pressure differentials
Implementation Method 3
efficient airflow through the pallet stacks
Data Source
AI summary
A high efficiency airflow management system can be used to reliably and consistently draw air through palletized product stacks with a minimum of energy expenditure. A racking system is provided with a grid of pallet bays separated from an air plenum/chamber by a wall having an airflow opening for each pallet bays. An air seal is formed at the periphery of each opening by resiliently flexible side seals and a top seal to form a highly airtight interface between the pallet assembly and the adjacent airflow opening. When a pressure differential is developed between the chamber and the pallet bay, air is efficiently drawn substantially exclusively through the pallet assemblies with minimal leakage. The flexible sealing arrangement accommodates pallet assemblies with unevenly stacked rows of cases without significant loss of system efficiency.