Insulated Filter Box Preventing Condensation via Nested Shells
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional filter boxes experience condensation due to temperature differences in cold conditions, leading to efficiency losses in air handling systems, and require field-installed insulation which is not guaranteed to prevent thermal breaches.
Innovation Solution
A production insulated filter box design featuring an inner shell with a filter airflow channel, an outer shell, and insulation sandwiched between the shells to prevent thermal contact and condensation, with a compact and easy-to-install configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a conventional filter box is used without insulation, then the device complexity is low and ease of manufacture is high, but condensation occurs due to temperature difference which reduces system efficiency
Solution Approach 1:
The patent implements a nested structure where the inner shell containing the filter is placed inside the outer shell, with insulation material positioned between them. This nested configuration provides thermal insulation to prevent condensation while maintaining a compact and integrated filter box design, resolving the contradiction between system efficiency and device complexity.
Solution Approach 2:
The insulation material acts as an intermediary layer between the inner shell (exposed to cold air) and the outer shell (exposed to ambient temperature). This intermediate insulating layer prevents direct thermal contact, eliminating condensation issues while preserving the overall structural simplicity of the filter box.
2Reliability
If field-installed insulation is applied to a conventional filter box, then condensation may be reduced, but thermal breaches can still occur and the installation process becomes more complex
Solution Approach 1:
The filter box is manufactured with the insulation layer and inner shell pre-assembled in a controlled factory environment, ensuring proper insulation installation before field deployment. This preliminary action eliminates the need for complex field insulation installation and ensures reliable condensation prevention without compromising ease of installation.
Solution Approach 2:
The patent combines the insulation layer, inner shell, and outer shell into a single integrated filter box unit during manufacturing. This merging of components simplifies the installation process while ensuring reliable thermal insulation and condensation prevention, as all elements are pre-coordinated in the factory setting.
3Object-affected harmful factors
If the inner shell and outer shell are placed in direct contact, then the device complexity is reduced and manufacturing is easier, but thermal conduction causes condensation on the outer shell surface
Solution Approach 1:
The insulation material serves as an intermediary layer positioned between the inner shell and outer shell, preventing direct thermal conduction. This intermediate layer blocks heat transfer that would cause condensation on the outer shell surface while maintaining a relatively simple overall device configuration.
Solution Approach 2:
The patent applies insulation material specifically in the region between the inner and outer shells where thermal conduction would cause condensation. This localized quality enhancement addresses the condensation issue at the critical interface without unnecessarily complicating the entire device structure.
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 solution effectively eliminates condensation by maintaining thermal separation between the inner and outer shells, ensuring consistent performance across varying temperatures without the need for field-installed insulation, enhancing the efficiency and reliability of air handling systems.
Implementation Method 1
the insulator is sandwiched between the outer shell and the inner shell... the insulator insulates and seals the inner shell from the outer shell
Data Source
AI summary
A filter box mounts to an air intake opening of an air handler. The filter box includes an inner shell, insulator, and an outer shell. The inner shell is adapted to confine one or more filters therein. The inner shell defines an airflow channel from a front end opening of the inner shell through the filter(s) to a rear end opening of the inner shell. The outer shell defines a chamber from a front end opening of the outer shell to a rear end opening of the outer shell. The outer shell contains the inner shell in the chamber and the insulator is sandwiched between the outer shell and the inner shell. The inner shell and the outer shell are separated and spaced apart all over by the insulator and the insulator insulates and seals the inner shell from the outer shell.