Roll-Up Door Guide Heating System for Cold Storage Frost Prevention
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Solution Overview
Problem
Frost and ice buildup in the side guide columns and roll-up doors of cold storage and freezer facilities cause operational malfunctions and damage due to air leakage and temperature differences.
Innovation Solution
A system and method for heating the door guide area using conduits for circulating heated air, a heater connected to the conduits, and heat transfer walls with fins to maintain the air temperature above freezing, reducing frost and ice formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the door assembly is configured in a cold air and/or freezer facility to maintain low temperature, then energy efficiency and cold storage function are improved, but frost and ice buildup occurs in the gap between the door and guiding assembly
Solution Approach 1:
The heating system proactively warms the door guide area before frost and ice can form, preventing the harmful buildup before it occurs. The heater continuously or periodically applies heat to the gap between the door and guiding assembly, maintaining temperatures above freezing despite the cold storage environment.
Solution Approach 2:
A heating system acts as an intermediary between the cold storage environment and the door guide area. The heater introduces thermal energy into the gap space, creating a localized warm zone that protects against frost formation while allowing the rest of the storage facility to remain cold.
2Ease of operation
If air flows into the gap between the door and guiding assembly during door operation, then door movement and sealing flexibility are improved, but frost and ice buildup occurs causing operational malfunctions
Solution Approach 1:
The system converts the harmful effect of air flow into a beneficial one by heating the incoming air before it contacts the door guide area. The air that would otherwise cause frost buildup is pre-warmed, transforming it from a harmful factor into a neutral or beneficial element that maintains moisture without freezing.
Solution Approach 2:
The heating system serves as an intermediary that treats the air flowing into the gap, warming it to prevent frost formation. This allows continuous door operation with maintained sealing flexibility while eliminating the reliability issues caused by ice buildup.
3Reliability
If heating is applied to the door guide area to prevent frost buildup, then door assembly reliability is improved, but energy consumption increases
Solution Approach 1:
Instead of heating the entire cold storage facility, the system applies heating locally only to the specific gap area between the door and guiding assembly where frost formation occurs. This localized approach minimizes energy consumption while effectively preventing frost buildup in the critical zone.
Solution Approach 2:
The heating system applies just enough thermal energy to prevent frost formation in the door guide area, rather than excessively heating the entire facility. The partial action is sufficient to maintain reliability by keeping the critical gap area above freezing while minimizing overall energy consumption.
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
Effectively prevents frost and ice buildup by maintaining the air temperature above freezing, ensuring smooth operation and extending the lifespan of door and guide assemblies.
Implementation Method 1
a heater fluidly connected to the first conduit and configured to provide heated air to the first and second conduits
Implementation Method 2
a first conduit for channeling a flow of heated air in a first direction; a second conduit for channeling the flow of heated air in a second direction
Implementation Method 3
a heat transfer wall part of the second conduit, the heat transfer wall configured to transfer heat from the flow of heated air in the second direction to a space outside of the second conduit
Implementation Method 4
heat transfer fins for collecting heat from heated air in the second conduit, the heat transfer fins attached to the heat transfer wall extend into the second conduit
Data Source
AI summary
A method for heating a door guide area includes: channeling a flow of heated air in a longitudinal first direction in a first conduit; channeling the flow of heated air in a longitudinal second direction different than the first direction in a second conduit; providing heated air to the second and first conduits by routing the heated air directly from a heater laterally across the first conduit to the second conduit; transferring heat from the flow of heated air in the second conduit to a heated space outside of the first and second conduits; and configuring a side portion of a roll-up door to be in the heated space when the roll-up door is in a closed position.