Process for forming a register box that is adaptable to ductwork of an HVAC system
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Solution Overview
Problem
Existing register boxes for HVAC systems face challenges in achieving airtight seals and efficient insulation due to labor-intensive manufacturing processes, air leakage, and the need for adaptable duct connections, which require skilled personnel and are costly and hazardous for workers.
Innovation Solution
A process for forming a register box with a body having side panels and a wall with pre-cut circular areas, where an expandable polymeric foam material is introduced and solidified around a plug, allowing for customizable duct connections and improved insulation by using the removed circular areas as guides for cutting the foam to fit various duct sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional sheet-metal register boxes are used with manual insulation installation, then workers can install the boxes, but the process is labor-intensive, hazardous for workers, and requires skilled personnel for airtight sealing
Solution Approach 1:
The register box is divided into modular components: a collar adapter portion with a collar that can be selectively positioned and secured, and a body portion with insulation already integrated. This segmentation allows unskilled workers to simply assemble the pre-managed components rather than performing complex sealing and insulation tasks on-site.
Solution Approach 2:
The insulation material is pre-installed within the body portion during manufacturing, and the collar adapter is pre-configured with securing mechanisms. These preliminary actions eliminate the need for workers to perform hazardous insulation installation and complex sealing tasks on-site, improving both safety and installation efficiency.
2Reliability
If register boxes require airtight seals through complex manufacturing processes, then sealing performance improves, but manufacturing complexity and cost increase
Solution Approach 1:
The register box combines a collar adapter portion (which can be metal or other material) with a body portion that includes integrated insulation material. This composite structure achieves airtight sealing through the design of the collar adapter and its securing mechanisms rather than through complex manufacturing processes, simplifying production while maintaining reliability.
Solution Approach 2:
The collar adapter includes self-securing mechanisms such as clips, tabs, or interlocking features that automatically create airtight seals when the collar is positioned and secured to the ductwork. This self-service approach eliminates the need for complex manual sealing processes during installation, reducing both manufacturing complexity and installation difficulty.
3Ease of manufacture
If register boxes are designed for fixed duct sizes, then manufacturing is simplified, but adaptability to various duct diameters is reduced
Solution Approach 1:
The collar adapter portion is designed with dynamic adjustability, allowing the collar to be selectively positioned at different locations along the adapter and secured in various orientations. This dynamic design enables a single collar adapter component to accommodate multiple duct diameters and configurations, providing versatility without requiring multiple specialized parts.
Solution Approach 2:
The collar adapter is designed as a universal component that can interface with ductwork of various diameters through selective positioning and securing mechanisms. The same collar adapter structure serves multiple functions: accommodating different duct sizes, providing airtight sealing, and enabling easy installation. This multi-functionality achieves adaptability without increasing manufacturing complexity.
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 process enables airtight seals, reduces labor and costs, allows unskilled workers to install the register boxes, minimizes air loss, and improves worker safety by using expandable polymeric foam that is energy-efficient and fire-resistant, while being adaptable to various duct sizes without special tools.
Implementation Method 1
introducing an expandable polymeric foam material into an interior of the body; expanding the expandable polymeric foam material in the interior of the body such that the expandable polymeric foam material solidifies across the wall and around the plug
Data Source
AI summary
A process for forming a register box has a body formed with a plurality of side panels arranged in a generally square or rectangular configuration with a wall extending transverse to the side panels. A plurality of circular areas are cut into the wall. An expandable polymeric foam material is introduced into an interior of the body. The body is positioned in a fixture such that the wall is juxtaposed against a surface of the fixture. A plug is inserted into the interior of the body. The expandable polymeric foam material is expanded in the interior of the body such that the expandable polymeric foam material solidifies across the wall and around the plug. The plug is then removed from the body and the body is then removed from the fixture.