Fuel Mixing Assembly With Rotation Guide for Consistent Combustion

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Solution Overview

Problem

Existing fuel mixing apparatuses suffer from distortion of the rotation axis of the opening/closing device, leading to improper positioning of the blade, which affects the control of airflow and fuel supply, resulting in inconsistent combustion in devices like boilers.

Innovation Solution

A fuel mixing apparatus with a rotation guide that supports the opening/closing device to prevent the rotation axis from inclining, ensuring precise control of airflow and fuel supply by using a motor-driven adapter and blade system with a pressing boss to block current flow and maintain blade positioning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the opening/closing device is rotated to open or close the passage, then the flow rates of air and fuel are controlled, but the rotation axis of the opening/closing device becomes distorted

Engineering Contradiction:

Improveflow rate controlVSAvoidrotation axis alignment

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The patent introduces an adapter as an intermediary component between the motor and the opening/closing device. The adapter includes a pressing boss that presses against a rotation guide during rotation, preventing the rotation axis from becoming distorted. This intermediary structure transmits the rotational motion while maintaining proper axis alignment, thus resolving the contradiction between operational functionality and rotational precision.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Extent of automation

If the adapter presses the switch to control the motor, then the blade positioning is controlled, but the rotation axis of the adapter becomes inclined

Engineering Contradiction:

Improvemotor controlVSAvoidadapter rotation axis alignment

Core Design Contradiction:

Extent of automationVSManufacturing precision

Solution Approach 1:

The rotation guide acts as an intermediary constraint between the adapter and the motor. As the adapter rotates and presses the switch button to control motor operation, the rotation guide prevents the adapter's rotation axis from inclining by providing a guiding surface that maintains proper alignment throughout the rotational cycle.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Productivity

If the blade is rotated to open or close the passage, then airflow control is achieved, but the blade positioning becomes inaccurate

Engineering Contradiction:

Improveairflow controlVSAvoidblade positioning accuracy

Core Design Contradiction:

ProductivityVSMeasurement precision

Solution Approach 1:

The adapter serves as an intermediary transmission mechanism between the motor and the blade. By incorporating the pressing boss that interacts with the rotation guide, the adapter ensures that rotational motion is transmitted accurately without axis distortion, thereby maintaining precise blade positioning while enabling effective airflow control through the passage.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20250216072A1Fuel mixing apparatus and boiler including the same

Publication Date: 2025.07.03 KYUNGDONG NAVIEN CO LTD

AI summary

Disclosed is a fuel mixing apparatus including a case defining a passage, in which air and a fuel flow, an opening/closing device that opens and closes the passage as at least a portion thereof is rotated, and a rotation guide that supports the opening/closing device to prevent a rotation axis of the opening/closing device from being inclined while the opening/closing device is rotated.