Integrated Motor and Blower for Compact HVAC Applications
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Solution Overview
Problem
Conventional motorized blower arrangements with a stator in an inner radial direction are bulky and inefficient in terms of space usage.
Innovation Solution
An integrated motor and blower design where the stator is attached to the motor case, and the rotor is positioned concentrically within the stator, with the fan directly attached to the rotor, allowing for reduced space requirements and improved thermal management by enabling heat conduction from the motor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the stator is arranged in an inner radial direction within the rotor, then the motor structure is compact, but the overall device becomes bulky and inefficient in space usage
Solution Approach 1:
The patent merges the motor and blower into a single integrated unit where the motor case serves dual purposes as both motor housing and blower housing. The stator is attached directly to the motor case, and the rotor is coupled to the fan assembly, creating a unified structure that eliminates the need for separate motor and blower housings, thereby improving overall space efficiency while maintaining compact motor dimensions
Solution Approach 2:
The motor case is designed to serve multiple functions: it houses the motor components (stator and rotor) and simultaneously serves as the blower housing. This multi-functional design allows the same structural component to fulfill both motor containment and blower housing roles, resolving the contradiction between motor compactness and overall device space efficiency
2Volume of moving object
If the stator is arranged in an inner radial direction within the rotor, then the motor structure is compact, but thermal management becomes insufficient
Solution Approach 1:
The integration of motor and blower functions allows the fan assembly to serve dual purposes: generating airflow for blower function and simultaneously providing thermal management for the motor. The rotor is directly coupled to the fan, ensuring that motor operation drives fan rotation, which in turn facilitates heat dissipation from the motor components
Solution Approach 2:
The motor-driven fan assembly provides self-service thermal management by using the motor's own operational energy to drive the fan, which then dissipates heat from the motor components. This eliminates the need for a separate cooling system, as the blower function inherently provides thermal management capabilities
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 integrated design reduces space requirements and enhances thermal management by allowing the fan to dissipate heat from the motor, making it suitable for compact applications such as midsize air conditioning units in vehicles.
Implementation Method 1
The motor includes a stator and a rotor that is disposed within a central bore of the stator. The rotor includes a plurality of permanent magnets retained within the rotor.
Implementation Method 2
improved thermal management by enabling heat conduction from the motor
Implementation Method 3
the fan to dissipate heat from the motor
Data Source
AI summary
An integrated blower and motor is provided. The integrated blower and motor can include a rotor and a stator, wherein the rotor is disposed with a central bore of the stator. The integrated blower and motor includes a fan, wherein the fan can be attached to the rotor. According to the embodiments described herein, an integrated blower and motor is provided that is compact and uses less space.