Blower Assembly Enclosure with Segmented Access for Easier Servicing
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Solution Overview
Problem
Existing heat pump water heater blower assembly enclosures are difficult to disassemble, making it challenging to access and service fan components safely and efficiently.
Innovation Solution
The proposed air transferring system includes an enclosure with a base, a lid having an air exhaust, and a shroud with an open top and bottom, along with a faceplate and a blower assembly attached to the faceplate. The blower assembly is external to the shroud, allowing for easy access and service without removing the shroud.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wrap-around sheet-metal shrouds are used to fully enclose the axial fan, then safety is improved, but ease of repair deteriorates
Solution Approach 1:
The enclosure is divided into separate components: a base, a lid, and a shroud with open top and bottom. The blower assembly is positioned on the base and can be accessed by removing only the base, while the shroud remains in place to enclose the fan blades for safety. This segmentation allows independent access to the motor without compromising safety enclosure.
Solution Approach 2:
The blower assembly (motor and impeller) is extracted from within the shroud enclosure and positioned externally on the base. This extraction allows the motor to be serviced by simply removing the base, while the shroud remains intact to provide safety enclosure for the fan blades, resolving the contradiction between safety and ease of repair.
2Ease of repair
If the lid is removed to service the motor, then ease of repair is improved, but device complexity increases
Solution Approach 1:
The enclosure is segmented into a base, lid, and shroud, with the blower assembly positioned on the base. This segmentation creates a direct access path to the motor by removing only the base, eliminating the need to remove the lid and reducing the number of disassembly steps while maintaining simple device architecture.
Solution Approach 2:
The blower assembly is pre-positioned on the base during assembly, creating a configuration where the base serves as the primary access cover for motor servicing. This preliminary positioning simplifies the servicing procedure to a single component removal (base) rather than requiring sequential removal of multiple components.
3Ease of repair
If fluid or air conduits are disconnected to access fan components, then ease of repair is improved, but loss of time increases
Solution Approach 1:
The blower assembly is extracted and positioned on the base, creating a configuration where the motor is accessible by removing only the base. This extraction eliminates the need to disconnect fluid or air conduits that would be required if the motor were enclosed within the shroud, significantly reducing servicing time and complexity.
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
This design facilitates easier disassembly and access to fan components, enhancing maintenance efficiency and safety while maintaining the structural integrity of the enclosure.
Implementation Method 1
an impeller for drawing air through the air exhaust, faceplate opening, and blower exhaust and urging the air out the exhaust
Data Source
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AI summary
An air transferring system is disclosed. The air transferring system includes an enclosure, a faceplate, and a blower assembly attached to the faceplate. The enclosure includes a base, a lid having an air exhaust, and a shroud. The shroud has an open shroud top, an open shroud bottom, and an opening in the shroud defined between a first shroud edge and a second shroud edge. Each of the shroud edges extends between the open shroud top and the shroud bottom. The faceplate includes a faceplate opening that extends between the first and second shroud edges. The blower assembly includes a blower exhaust proximate to all of the faceplate opening, an exhaust opening, and an impeller for drawing air through the air exhaust, faceplate opening, and blower exhaust and urging the air out the exhaust.