Engine Drive Fan Assembly with Motor Cooling to Prevent Gas Leakage
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Solution Overview
Problem
Conventional engine drive apparatuses face limitations in mixed gas flow supply, restricting engine output and risking fires due to mixed gas leakage towards the motor during supercharging.
Innovation Solution
An engine drive apparatus with a fan assembly that supercharges mixed gas by drawing air through a motor, preventing leakage through strategically positioned inlet and outlet holes, and using a flow path forming case to separate air and mixed gas flows, ensuring the motor is radiated and protected from gas leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a fan assembly is used to super-charge mixed gas to increase engine output, then the mixed gas flow amount increases, but mixed gas may leak towards the motor causing fire hazards
Solution Approach 1:
The patent divides the housing into multiple sealed compartments including a motor housing and a fan housing. The motor housing contains the motor while the fan housing contains the fan and mixed gas flow path. This segmentation physically separates the mixed gas from the motor, preventing gas leakage to the motor while maintaining high flow rates for engine supercharging.
Solution Approach 2:
The patent introduces a sealed housing structure as an intermediary barrier between the mixed gas flow path and the motor. The housing with sealed joints and gaskets acts as a mediator that allows the fan to super-charge mixed gas while preventing direct contact between the gas and motor, thus eliminating fire hazards.
2Device complexity
If the motor is positioned close to the fan for compact design, then device complexity is reduced, but mixed gas leakage towards the motor increases fire risk
Solution Approach 1:
The patent segments the housing into distinct motor housing and fan housing portions with sealed joints. This segmentation allows close positioning of motor and fan for compact design while maintaining physical separation through sealed walls, thus reducing overall device complexity while preventing gas leakage to motor.
Solution Approach 2:
The patent uses gaskets and sealed joints (flexible sealing elements) between housing portions to create effective barriers. These thin film-like seals prevent gas leakage while allowing compact assembly, thus maintaining structural simplicity while eliminating fire risks from gas proximity to motor.
3Temperature
If air is drawn through the motor for cooling, then motor radiating efficiency improves, but mixed gas may be drawn into the motor causing leakage
Solution Approach 1:
The patent segments the housing to create separate air flow paths. The motor housing has dedicated air inlet and outlet openings that are sealed from the mixed gas flow path. This segmentation allows air to be drawn through the motor for cooling while preventing mixed gas from entering the motor, thus improving cooling efficiency without causing gas leakage.
Solution Approach 2:
The sealed motor housing acts as an intermediary that separates the air cooling flow path from the mixed gas flow path. Air can be drawn through the motor for cooling while the sealed housing prevents mixed gas from following the same path into the motor, thus enabling effective cooling without gas leakage.
4Ease of manufacture
If the fan housing is opened for easy assembly, then ease of manufacture improves, but mixed gas flow paths may become exposed increasing leakage risk
Solution Approach 1:
The patent segments the housing into removable portions including a fan housing that can be separated from the main body. This segmentation allows easy assembly and disassembly for manufacturing while the sealed joints between segments prevent mixed gas leakage when assembled, thus improving ease of manufacture without increasing leakage risk.
Solution Approach 2:
The patent uses gaskets and sealed joints as intermediary sealing elements between removable housing portions. These seals ensure that when the housing is assembled, the mixed gas flow path remains enclosed and sealed, preventing leakage while allowing the housing to be disassembled for easy manufacturing and maintenance.
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
Enhances mixed gas flow to the engine, increasing output while preventing gas leakage and potential fires, ensuring efficient and safe operation.
Implementation Method 1
a fan connected with the motor via a shaft to drive
Implementation Method 2
the air supplied to the mixer after passing through the motor. Accordingly, the air guided to the mixer may radiate the motor
Data Source
AI summary
There is disclosed an engine drive apparatus comprising an engine configured to generate a power by combusting mixed gas of air and gas fuel; a fan assembly arranged in an upstream of the engine and configured to super-charge the mixed gas towards the engine; and a mixer provided in an upstream of the fan assembly and configured to mix the air and the fuel with each other, wherein the fan assembly comprises a motor; and a fan connected with the motor via a shaft to drive, and the air is supplied to the mixer after passing through the motor.