Make-up air heating system
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Solution Overview
Problem
Current make-up air systems incur undesired maintenance costs due to mechanical connections between the motor and blower, such as belts, which require frequent replacement and maintenance.
Innovation Solution
A make-up air heating system design that positions the motor directly coupled to the blower within an enclosure, eliminating the need for belts or other mechanical connections, and incorporates a sealed motor enclosure to facilitate cooling and integration with an auxiliary flow assembly for motor cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a motor is connected to drive the blower through a belt or other mechanical connection, then the blower can be driven, but maintenance costs increase due to frequent belt replacement and mechanical connection issues
Solution Approach 1:
The motor and blower are merged into a single integrated motor assembly where the motor is directly coupled to the blower impeller, eliminating separate mechanical connection components like belts. This integration reduces the number of parts that can fail and eliminates maintenance associated with mechanical connections.
Solution Approach 2:
The patent replaces the mechanical belt-driven system with a direct-drive system where the motor shaft is directly coupled to the blower impeller. This substitution eliminates the mechanical connection components (belts, pulleys, bearings) that require maintenance, thereby reducing maintenance costs and improving reliability.
2Quantity of substance
If the motor is positioned within the enclosure, then the system is compact, but the motor requires cooling to prevent overheating
Solution Approach 1:
The air flow path within the enclosure serves multiple functions: it provides the main air handling function for the make-up air system and simultaneously acts as a cooling path for the motor. The air that passes through the enclosure absorbs heat from the motor, eliminating the need for separate cooling systems and maintaining compactness.
Solution Approach 2:
The system uses its own operational air flow to cool the motor. The air passing through the enclosure naturally absorbs heat from the motor during normal operation, allowing the system to self-regulate motor temperature without requiring external cooling mechanisms, thus maintaining compact design.
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
Reduces maintenance costs and improves system efficiency by eliminating mechanical connections and providing effective motor cooling, thereby enhancing the reliability and performance of the heating system.
Implementation Method 1
Heat source 110 (e.g., gas burner, resistance heater) heats air within chamber 120
Implementation Method 2
blower 112 forces heated air into an outlet chamber 122
Implementation Method 3
Air flows around motor 132 within motor enclosure 130 to cool the motor 132
Data Source
AI summary
A make-up air heating system includes an enclosure defining an inlet chamber and an outlet chamber. A heating source is positioned within the inlet chamber and a blower is positioned within the outlet chamber. A motor assembly positioned within the enclosure includes a motor enclosure and a motor. The motor is coupled to the blower.