Generator Air Intake Damper for Combustion Control

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Solution Overview

Problem

Generators often operate at suboptimal efficiency due to uncontrolled combustion air temperature, leading to reduced power output and increased emissions of unburned and partially burned hydrocarbons.

Innovation Solution

An air intake system with a damper and temperature control mechanism, where an air intake housing with holes is connected to a damper that can slide along an inner plate, allowing adjustment of air intake based on external and internal temperature sensors, enabling control of air temperature fed to the generator.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the generator operates with uncontrolled combustion air intake, then the device complexity is reduced, but the combustion efficiency and power output deteriorate

Engineering Contradiction:
Improveair intake system complexityVSAvoidpower output
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The patent applies the dynamics principle by implementing a movable damper within the air intake housing that can adjust its position to control the amount of combustion air entering the generator. The damper is connected to an actuator that responds to temperature sensor signals, dynamically adjusting air intake based on real-time temperature conditions between the enclosure interior and exterior, thereby optimizing power output without excessive system complexity

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent implements feedback control through temperature sensors that continuously monitor the temperature difference between the enclosure interior and exterior. These sensors provide feedback to the control system, which then actuates the damper to adjust air intake accordingly, creating a closed-loop control system that maintains optimal combustion efficiency and power output

Inventive Principle:
Principle #23Feedback

2Device complexity

If the generator operates with uncontrolled combustion air intake, then the device complexity is reduced, but the combustion efficiency deteriorates

Engineering Contradiction:
Improveair intake system complexityVSAvoidcombustion efficiency
Core Design Contradiction:
Device complexityVSLoss of energy

Solution Approach 1:

The movable damper dynamically adjusts the air intake opening based on real-time temperature conditions, optimizing the combustion air-to-fuel ratio. This dynamic adjustment ensures efficient combustion by preventing both excessive air intake (which would cool the combustion process) and insufficient air intake (which would cause incomplete combustion), thereby minimizing energy loss without requiring complex system architecture

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

Temperature sensors provide continuous feedback on the thermal conditions inside and outside the enclosure, enabling the control system to adjust the damper position to maintain optimal combustion temperature. This feedback mechanism prevents energy loss by ensuring the combustion process receives the appropriate amount of air to burn fuel completely and efficiently

Inventive Principle:
Principle #23Feedback

3Ease of operation

If the generator operates with uncontrolled combustion air intake, then the ease of operation is maintained, but the emissions of unburned hydrocarbons increase

Engineering Contradiction:
Improveoperation simplicityVSAvoidhydrocarbon emissions
Core Design Contradiction:
Ease of operationVSObject-generated harmful factors

Solution Approach 1:

The temperature feedback control system automatically adjusts the damper position to ensure complete combustion by maintaining optimal air-to-fuel ratios. This automated control reduces harmful hydrocarbon emissions by preventing incomplete combustion conditions, while the system remains easy to operate as it functions autonomously based on temperature sensor inputs without requiring manual intervention

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The air intake control system is self-regulating, using temperature sensors to automatically adjust the damper position without operator intervention. The system serves itself by monitoring its own thermal conditions and making appropriate adjustments to minimize emissions, maintaining ease of operation while reducing harmful hydrocarbon output through optimized combustion

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS12060859B2Generator enclosure air intake with damper
Publication Date: 2024.08.13 STEWART & STEVENSON LLC
  • US12060859B2 patent drawing
  • US12060859B2 patent drawing
  • US12060859B2 patent drawing

AI summary

A system includes a generator and an enclosure surrounding the generator, the generator having an air intake and an inside surface. The system also includes an air intake housing affixed to the inside surface of the enclosure and fluidly connected to the air intake, the air intake housing terminating in an air intake housing inner plate positioned at inner edge of the air intake housing. The air intake housing inner plate has a plurality of air intake holes. In addition, the system includes a damper, the damper abutting the air intake housing inner plate, the damper having a plurality of damper holes. The damper is adapted to slide along the air intake housing inner plate.