Blower Housing With Remote Air Intake for Quiet Exhaust Dilution
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Solution Overview
Problem
Existing blower housings for climate control furnaces and water heaters are complex, costly to manufacture and assemble, and increase noise due to direct ambient air intake for cooling and dilution, complicating the construction and assembly process.
Innovation Solution
A simplified blower housing design that integrates motor cooling and exhaust gas dilution with a noise muffler, double-layered wall for insulation, and a remote air intake conduit to reduce noise and complexity, allowing easy assembly and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If ambient air is drawn directly into the blower housing to cool the motor and dilute exhaust gases, then cooling and dilution effectiveness is improved, but noise from motor and fan operation escapes and construction complexity increases
Solution Approach 1:
A remote air intake conduit acts as an intermediary element, channeling ambient air from a location remote from the blower housing into the housing. This mediator allows cooling air to reach the motor and dilute exhaust gases while preventing direct noise transmission through the air intake path, thus resolving the contradiction between cooling effectiveness and noise reduction.
2Temperature
If modifications are made to the blower housing to enable direct ambient air intake for cooling and dilution, then cooling and dilution effectiveness is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The air intake function is segmented from the main blower housing structure. Instead of modifying the housing itself with complex openings and channels, the air intake function is separated into a distinct remote conduit assembly. This segmentation simplifies the main housing design while achieving the required cooling and dilution functions through the separate conduit system.
3Temperature
If ambient air is drawn directly into the blower housing for cooling and dilution, then cooling and dilution effectiveness is improved, but assembly time and cost increase
Solution Approach 1:
The remote air intake conduit serves as a pre-assembled intermediary component that can be independently manufactured and tested before final installation. This mediator component approach allows for standardized production and simplified on-site assembly, reducing the time and cost associated with complex housing modifications while maintaining effective cooling and dilution functions.
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 effective motor cooling and exhaust gas dilution while reducing noise and manufacturing costs, simplifying assembly and operation by isolating noise and heat, and ensuring safe handling.
Implementation Method 1
The housing is designed to receive dilution air from a location that is remote from the housing, thereby reducing blower operation noise at the blower housing
Implementation Method 2
double-layered wall for insulation
Implementation Method 3
A noise muffler is positioned over the opening to the housing through which ambient air is drawn
Data Source
AI summary
A blower housing may be used with a climate control furnace or with a water heater and provides cooling of the motor that rotates the blower fan and also provides dilution and cooling of exhaust gases drawn from the furnace or water heater. The housing has an interior dilution compartment that communicates with an elongate conduit. The dilution compartment receives dilution air through the conduit, thereby reducing blower operation noise at the blower housing.