Combustion apparatus
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Solution Overview
Problem
Conventional combustion apparatuses face challenges in preventing overheating at the combustion box portion between the burner and the heat exchanger while maintaining cost-effectiveness, as existing solutions like winding water tubes or using thermal insulation materials require additional costly components.
Innovation Solution
The combustion apparatus incorporates a fin-tube type heat exchanger and mounts thermal insulation materials on the inner surface of swelling parts formed on the side plates of the combustion box, using the burner structural member and heat exchanger fins to prevent the insulation materials from falling, thus eliminating the need for specialized anti-falling members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If water tubes are wound around the combustion box to prevent overheat, then overheating is prevented, but manufacturing cost increases
Solution Approach 1:
The patent replaces expensive water tubes with a cheaper thermal insulation material that can be simply mounted on the combustion box inner surface. The insulation material serves as a cost-effective alternative to the complex water tube system, achieving temperature control without the high manufacturing costs associated with winding and securing water tubes around the combustion box.
2Ease of manufacture
If thermal insulation material is mounted on the combustion box inner surface to prevent overheat, then manufacturing cost is reduced, but the insulation material falls off
Solution Approach 1:
The patent introduces a resin layer as an intermediary substance between the thermal insulation material and the combustion box inner surface. This resin layer acts as an adhesive mediator that securely bonds the insulation material to the combustion box, preventing it from falling off during operation while maintaining the cost-effective insulation solution.
3Reliability
If dedicated anti-falling members are used to secure thermal insulation material, then insulation material retention is improved, but manufacturing cost increases
Solution Approach 1:
The patent enables the thermal insulation material to secure itself to the combustion box through the resin layer application, eliminating the need for separate dedicated anti-falling members such as clips or fasteners. The resin layer provides sufficient bonding strength to retain the insulation material in place, achieving reliable retention while maintaining cost-effectiveness by avoiding additional components.
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 solution effectively prevents overheating at the combustion box portion between the burner and the heat exchanger while reducing costs by eliminating the need for additional anti-falling components, thus achieving a cost-effective and efficient thermal management system.
Implementation Method 1
a first thermal insulation material that is positioned between the burner and the heat exchanger is mounted on an inner surface of a side plate part
Implementation Method 2
a fin-tube type of a heat exchanger that is disposed in the combustion box and has a plurality of fins which are arranged in parallel, and a plurality of heat absorbing tubes which pierce the fins
Implementation Method 3
a fin-tube type of a heat exchanger that is disposed in the combustion box
Data Source
AI summary
A thermal insulation material is arranged on an inner surface of a swelling part formed at a side plate part and outwardly swelling in an X-axis direction so as to be sandwiched from both sides in a Z-axis direction by a step outwardly bent in the X-axis direction and positioned an end, in a Z-axis plus direction, of the swelling part and by a structural member of a burner protruding inwardly in the X-axis direction from an end, in the Z-axis minus direction, of the side plate part. A vicinity portion of an end, in the Z-axis plus direction, of the thermal insulation material is held from an inside in the X-axis direction by a side edge portion, on each side in the X-axis direction, of the fins.