Combustion apparatus
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Solution Overview
Problem
Existing combustion apparatuses face challenges in securing the positional accuracy and durability of thermal insulation materials, while also incurring high costs for attaching the fixing plates due to the need for brazing and potential positional deviations affecting the thermal insulation effect.
Innovation Solution
A combustion apparatus with a fixing plate attached to the combustion plate flange part, featuring pressing claws to secure the thermal insulation material in position and allowing contact with water passages for heat dissipation, enabling spot welding for cost reduction and preventing overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fixing plate is attached to the water passages by brazing, then the durability of the fixing plate is improved, but the manufacturing cost increases and the process becomes troublesome
Solution Approach 1:
The invention extracts the fixing plate from the water passage assembly and attaches it directly to the combustion plate flange part instead. This separation allows the fixing plate to be installed via simple spot welding rather than requiring complex brazing operations, thereby reducing manufacturing cost and process complexity while maintaining structural integrity
Solution Approach 2:
The invention introduces the combustion plate flange part as an intermediary component between the fixing plate and the water passages. The fixing plate is attached to the flange part, which in turn is positioned relative to the water passages, eliminating the need for direct brazing between the fixing plate and water passages
2Reliability
If the thermal insulation material is fixed through the fixing plate and water passages, then the thermal insulation effect is achieved, but positional deviation occurs and the thermal insulation effect fluctuates
Solution Approach 1:
The invention performs preliminary positioning by attaching the fixing plate directly to the combustion plate flange part before final assembly. This ensures the thermal insulation material is positioned accurately relative to the combustion plate flange part from the outset, preventing positional deviation during subsequent assembly operations
Solution Approach 2:
The invention applies thermal insulation material locally at the combustion plate flange part where it is most needed for thermal management. The fixing plate is specifically positioned to secure the thermal insulation material at this critical location, ensuring optimal thermal insulation performance where the combustion plate flange part requires it most
3Manufacturing precision
If the fixing plate is attached to the combustion plate flange part, then the positional accuracy of thermal insulation material is improved, but the fixing plate may overheat without proper heat dissipation
Solution Approach 1:
The invention uses the combustion plate flange part as a thermal intermediary that conducts heat away from the fixing plate. The flange part serves as a heat sink that dissipates thermal energy, preventing the fixing plate from overheating while maintaining its structural function for securing the thermal insulation material
Solution Approach 2:
The invention utilizes the water passage system (hydraulic element) to provide active cooling to the fixing plate. Water flowing through the passages removes heat from the fixing plate area, preventing overheating while allowing the fixing plate to maintain accurate positioning of the thermal insulation material
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
Ensures accurate positioning and durability of thermal insulation, reduces attachment costs through spot welding, and prevents overheating of the fixing plate and pressing claws via efficient heat dissipation to water passages.
Implementation Method 1
the water passages are disposed into contact with the pressing claws... due to the heat dissipation to the water passages, the pressing claws can also be prevented from getting overheated
Implementation Method 2
water passages in series connection with the heat exchanger are disposed as a cooling means for cooling the combustion box
Implementation Method 3
there is disposed a thermal insulation material overlapping that portion of the combustion plate flange part which faces an inner space of the combustion box... so arranged that overheating of the combustion plate flange part can be prevented
Implementation Method 4
the attaching of the fixing plate in this invention can be performed by an extremely convenient way of spot welding as compared with brazing
Data Source
AI summary
In a combustion apparatus including: a burner made up of a burner body and a sheet-metal combustion plate; and a combustion box which has a connection flange part to be coupled to a body flange part in a circumference of the burner body, the combustion box has disposed therein water passages as a cooling means, and a thermal insulation material which overlaps that portion of the combustion plate flange part which faces an inner space of the combustion box. A fixing plate for the thermal insulation material is attached to the combustion plate flange part. The fixing plate is provided with pressing claws for pressing in position the thermal insulation material so as to press and prevent the thermal insulation material from getting released away from the fixing plate. And water passages are disposed in a manner to contact the pressing claws.