Electronic Register Vent Zoning for Retrofit HVAC Control
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Solution Overview
Problem
Traditional home heating and cooling systems lack zonal control, leading to inefficiencies and high costs, as they require professional installation and are expensive to retrofit into zoned systems, limiting their adoption in the residential market.
Innovation Solution
The Electronically-Controlled Register Vent (ECRV) system allows homeowners to easily convert non-zoned HVAC systems into zoned systems by replacing standard register vents with self-contained units that include a thermostat, motor, and pressure sensors, enabling remote control and wireless communication for efficient temperature management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional zoned HVAC system is installed, then temperature control precision is improved, but installation cost and complexity increase significantly
Solution Approach 1:
The system divides the HVAC control into independent zone modules, each with its own thermostat and damper assembly. This allows each zone to be controlled separately while using a shared central HVAC system, reducing overall installation complexity while maintaining zoned temperature control precision.
Solution Approach 2:
Wireless communication modules serve as intermediaries between zone thermostats and the central HVAC system, eliminating the need for complex wired installations. This intermediary layer enables precise temperature control across multiple zones while keeping installation simple and affordable for homeowners.
2Loss of energy
If a zoned HVAC system is installed, then energy efficiency is improved, but initial cost increases
Solution Approach 1:
Each zone thermostat independently monitors its own temperature conditions and automatically controls its associated damper without requiring professional programming or configuration. This self-service capability allows homeowners to install and operate zoned systems themselves, dramatically reducing installation costs while maintaining energy efficiency benefits.
Solution Approach 2:
The system uses universal wireless communication protocols and standard HVAC components that can be integrated with existing central HVAC systems. This multi-functionality allows the same zoned control architecture to work with various HVAC equipment types, reducing overall system cost while achieving significant energy savings through selective zone control.
3Device complexity
If manual register vent control is used, then system simplicity is maintained, but temperature uniformity across zones deteriorates
Solution Approach 1:
Manual mechanical register vent control is replaced with electronically-controlled dampers actuated by wireless thermostats. This substitution maintains relative system simplicity by using off-the-shelf wireless components while dramatically improving temperature uniformity across zones through automated, precise control of airflow to each zone based on actual temperature conditions.
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 ECRV system reduces energy consumption by allowing precise control of heating and cooling in specific zones, increasing efficiency by up to 30% and lowering installation costs, making zoned HVAC systems more accessible and affordable for homeowners.
Implementation Method 1
the ECRV includes a pressure sensor to measure the pressure of the air in the ventilation duct that supplies air to the ECRV
Implementation Method 2
a motor to open and close the register vent
Data Source
AI summary
An Electronically-Controlled Register vent (ECRV) that can be easily installed by a homeowner or general handyman is disclosed. The ECRV can be used to convert a non-zoned HVAC system into a zoned system. The ECRV can also be used in connection with a conventional zoned HVAC system to provide additional control and additional zones not provided by the conventional zoned HVAC system. In one embodiment, the ECRV is configured have a size and form-factor that conforms to a standard manually-controlled register vent. In one embodiment, a zone thermostat is configured to provide thermostat information to the ECRV. In one embodiment, the zone thermostat communicates with a central monitoring system that coordinates operation of the heating and cooling zones.