HVAC Unit Centering Wedge System for Roof Curb Alignment
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Solution Overview
Problem
Existing HVAC systems face challenges in efficiently centering rooftop units on pre-existing roof curbs, leading to misalignment issues and increased height, which complicates servicing and requires costly adapters and adjustments.
Innovation Solution
A centering system comprising a set of wedges coupled to the base rail of the HVAC unit, featuring angled surfaces that contact and slide along the roof curb to align the unit, ensuring proper positioning without altering the unit's height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional mounting methods are used for HVAC units on pre-existing roof curbs, then installation is simplified, but misalignment occurs between the unit and curb leading to air leaks and improper positioning
Solution Approach 1:
The patent introduces a curb adapter as an intermediary component between the HVAC unit and the pre-existing roof curb. This adapter includes a receiving portion that interfaces with the curb and a base rail portion that interfaces with the HVAC unit, serving as a mediator to achieve proper alignment without directly modifying either the unit or the curb structure.
Solution Approach 2:
The mounting system is divided into distinct functional segments: a receiving portion for interfacing with the roof curb, a base rail portion for interfacing with the HVAC unit, and centering wedges for alignment. This segmentation allows each component to perform its specific function independently, simplifying the overall installation process while achieving precise alignment.
2Manufacturing precision
If adapters are used to center HVAC units on pre-existing curbs, then alignment is improved, but the unit height increases complicating servicing
Solution Approach 1:
The centering wedges are designed as movable, adjustable components rather than fixed structural elements. During installation, the wedges can be positioned and adjusted to achieve proper centering, then removed or stowed away. This dynamic approach provides the necessary centering function without permanently increasing the unit's height or creating obstacles for servicing.
3Manufacturing precision
If manual centering methods are used during installation, then alignment can be achieved, but installation time and labor increase
Solution Approach 1:
The centering wedges are designed to enable the HVAC unit to self-center on the roof curb during the lowering process. The wedges automatically engage with the curb surface and guide the unit into proper alignment through their geometric configuration, eliminating the need for extensive manual measurement and adjustment by installers. This self-centering mechanism significantly reduces installation time while maintaining high accuracy.
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 centering system efficiently aligns HVAC units with roof curbs, preventing air leaks, maintaining the unit's original height, and simplifying installation and servicing by ensuring accurate alignment of air flow inlets and outlets with ductwork.
Implementation Method 1
The angled surface is configured to contact the curb during installation of the HVAC unit to guide the HVAC unit toward a centered position on the curb
Implementation Method 2
The centering system includes a centering wedge configured to couple to a base rail of the HVAC unit, the centering wedge including an angled surface
Data Source
AI summary
The present disclosure relates to a centering system for a heating, ventilation, and/or air conditioning (HVAC) unit to be mounted to a curb. The centering system includes a centering wedge configured to couple to a base rail of the HVAC unit, the base rail having a lateral surface and a base surface along a length of the HVAC unit. The centering wedge includes an angled surface configured to extend between the lateral surface of the base rail and the base surface of the base rail. The angled surface is configured to contact the curb during installation of the HVAC unit to guide the HVAC unit toward a centered position on the curb.