HVAC Blower Motor Case Airflow Passageway for Controller Cooling
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Solution Overview
Problem
HVAC blower motor assemblies face increased cooling demands due to larger motors, necessitating enhanced airflow to the controller to maintain optimal operation.
Innovation Solution
A blower motor assembly with a case that includes an airflow inlet and passageway directing airflow to the controller, featuring a flange that redirects airflow to ensure effective cooling, allowing for larger motor sizes without compromising performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If larger motors are used to provide increased airflow, then the motor size increases, but the controller cooling becomes insufficient
Solution Approach 1:
The airflow path is segmented into distinct zones: an exterior airflow inlet, an interior airflow passageway, and a dedicated cooling zone with flange. This segmentation allows separate optimization of motor airflow generation and controller cooling, enabling the controller to receive sufficient cooling airflow even with larger motors producing more heat
Solution Approach 2:
The interior airflow passageway acts as an intermediary structure that channels exterior airflow to the controller region. The flange serves as an intermediary element that redirects airflow to ensure proper cooling of the controller, decoupling the motor size from controller thermal management
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 provides efficient cooling for the controller, reducing noise, preventing water pooling and foreign matter accumulation, and enhancing airflow performance, thereby supporting increased airflow generation capabilities.
Implementation Method 1
An airflow passageway of the blower motor case extends from the airflow inlet to the controller retention portion to direct airflow to the controller
Implementation Method 2
The flange is arranged opposite to the controller retention portion and to the controller to direct to the controller airflow that has passed through the airflow inlet and the airflow passageway
Data Source
AI summary
A blower motor assembly including a blower motor case for housing a blower motor therein. A controller retention portion of the blower motor case is configured to accommodate a controller within the blower motor case. An airflow inlet is defined by the blower motor case at an exterior of the blower motor case. An airflow passageway of the blower motor case extends from the airflow inlet to the controller retention portion to direct airflow to the controller. A flange of the blower motor case is at an end of the airflow passageway that is opposite to the airflow inlet. The flange is arranged opposite to the controller retention portion and to the controller to direct to the controller airflow that has passed through the airflow inlet and the airflow passageway.