HVAC Blower Motor Support With H-Shaped Vibration Decoupling
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Solution Overview
Problem
Existing motor support devices for vehicle heating, ventilation, and air-conditioning systems fail to effectively decouple motor vibrations across various positions, leading to sound and vibration disturbances that compromise passenger comfort.
Innovation Solution
A motor support device featuring a base and ring with decoupling means that absorb axial and tangential vibrations, maintaining rigidity against radial constraints, and are distributed in a standardized manner to accommodate both horizontal and vertical motor positions, using a plastic material with H-shaped decoupling elements for optimal damping and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If decoupling means are designed for a specific vibration type, then that vibration type is decoupled effectively, but the device cannot accommodate different motor positions (horizontal or vertical)
Solution Approach 1:
The motor support device incorporates a universal set of three decoupling elements that can handle all three vibration directions (radial, axial, and tangential) simultaneously. This multi-functional configuration allows the same device to effectively decouple vibrations regardless of whether the motor is positioned horizontally or vertically, eliminating the need for position-specific design variations.
Solution Approach 2:
The solution transitions from addressing single-direction vibrations to three-dimensional vibration control by introducing decoupling elements arranged in multiple spatial orientations. The three decoupling elements are positioned at different angular locations and orientations around the motor support, creating a three-dimensional decoupling network that accommodates vibrations from any direction and any motor orientation.
2Object-affected harmful factors
If decoupling means are added to handle all vibration types, then all vibrations are decoupled, but the complexity and cost of the device increases
Solution Approach 1:
The solution merges the functions of multiple specialized decoupling devices into a single integrated motor support structure. Instead of using separate decoupling mechanisms for radial, axial, and tangential vibrations, the invention combines all three decoupling elements into one unified device that handles all vibration types simultaneously, reducing overall system complexity and component count.
Solution Approach 2:
All three decoupling elements are made from the same elastic material and follow a consistent geometric design pattern, differing only in their orientation and positioning. This homogeneous approach simplifies manufacturing and maintenance compared to using different types of decoupling mechanisms for different vibration directions, while still achieving comprehensive vibration control.
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 effectively decouples motor vibrations regardless of position, significantly improving passenger comfort by eliminating sound disturbances and maintaining damping properties even at low temperatures.
Implementation Method 1
The decoupling means are interposed between the first and the second faces... the recess created in a direction parallel to the axis A causes a flexibility of the decoupling means with respect to an axial constraint and a tangential constraint while maintaining the rigidity of the decoupling means with respect to a radial constraint
Implementation Method 2
The specific structure of the decoupling means ensure the decoupling between the motor and the motor support regardless of the type of vibrations caused by implementation of the motor and the blower wheel. Thus, the axial and tangential vibrations are absorbed by the decoupling means.
Data Source
AI summary
The invention relates to a support device (1) of a motor of a blower. The support device (1) comprises a base (2), a ring (3) which extends according to an axis and which is able to house the motor. The support device (1) also comprises at least a decoupling means (4) which connects the base (2) and the ring (3). The ring (3) comprises a first face (5) extending according to the axis and the base (2) comprises a second face (10) extending according to the axis. The decoupling means (4) is interposed between the first (5) and the second (10) faces. The decoupling means may have an “H” shape in order to absorb the vibrations caused by the motor.