Integrated control box for HVAC units
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Solution Overview
Problem
The complexity of wiring in HVAC systems' control circuitry makes installation and maintenance difficult for technicians, increasing the risk of improper electrical connections.
Innovation Solution
A control box with a divider separating high and low voltage sections, where the low voltage section is covered to prevent improper access, allowing technicians to easily access the high voltage section for wiring connections while ensuring safe and correct installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control circuitry is integrated into the HVAC unit with complex wiring, then the HVAC unit can be controlled effectively, but the installation and maintenance difficulty increases
Solution Approach 1:
The control box is divided into separate high voltage and low voltage sections using a divider wall, allowing technicians to access only the high voltage section for wiring connections while the low voltage section containing the controller remains protected and inaccessible, thus simplifying installation and maintenance while maintaining control effectiveness
Solution Approach 2:
A cover is introduced as an intermediary element that selectively covers the low voltage section while leaving the high voltage section exposed, facilitating easy access for wiring connections while protecting the controller from improper access
2Ease of operation
If all control box sections are exposed for access, then wiring connections are easy to make, but the risk of improper electrical connections increases
Solution Approach 1:
The control box is segmented into high voltage and low voltage sections with selective exposure - the high voltage section is exposed for easy wiring access while the low voltage section containing the controller is covered and protected, preventing improper access while maintaining wiring accessibility
Solution Approach 2:
Different sections of the control box have different accessibility characteristics - the high voltage section is designed to be exposed and accessible for wiring connections, while the low voltage section is designed to be covered and protected, providing localized quality appropriate to each section's function
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
Facilitates efficient and safe installation and maintenance of HVAC units by keeping the low voltage section covered and the high voltage section accessible, reducing the risk of electrical mishaps and simplifying the installation process.
Implementation Method 1
a transformer coupled to the second wiring and configured to receive the higher voltage electrical power output by the power source and output lower voltage electrical power to the controller
Data Source
AI summary
The present disclosure relates to a control box configured to connect to heating, ventilation, and/or air conditioning (HVAC) equipment. The control box includes an outer housing and a divider wall located within the outer housing that separates a high voltage section of the control box and a low voltage section of the control box. The control box also includes a controller disposed within the low voltage section and first wiring extending from the controller to the HVAC equipment via a first passage formed in the outer housing. Additionally, the control box includes second wiring extending between the low voltage section and the high voltage section via a second passage formed in the divider wall. Furthermore, the control box includes a cover configured to engage the outer housing to cover the low voltage section while exposing the high voltage section.