Parallel Heat Exchanger Heating Apparatus for Compact RV Installation
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Solution Overview
Problem
Existing heating apparatuses for recreational vehicles are bulky, expensive, require intensive maintenance, and have inefficiencies in energy consumption.
Innovation Solution
A heating apparatus with two parallel heat exchanging units, a single combustion air fan unit, and a modular design that includes a housing shell to enhance stability and flexibility, allowing independent control of fluid heating and efficient heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If known heating apparatus configurations are used, then heating function is provided, but the apparatus becomes bulky and heavy
Solution Approach 1:
The patent combines multiple heat exchanging units and their respective burners into a single integrated housing, merging previously separate components into one compact structure. This reduces the overall volume and weight of the apparatus while maintaining the heating functions through shared structural support and coordinated operation of integrated components.
Solution Approach 2:
The housing serves multiple functions simultaneously: it provides structural support, contains the heat exchanging units and burners, and acts as a protective enclosure. This multi-functionality reduces the need for separate structural elements, thereby decreasing apparatus volume while maintaining stability and reliability.
2Ease of repair
If known heating apparatus configurations are used, then heating function is provided, but maintenance becomes intensive
Solution Approach 1:
The housing is designed with removable or accessible panels that allow individual heat exchanging units and burners to be accessed, removed, or replaced without disassembling the entire apparatus. This segmentation of access paths simplifies maintenance procedures while maintaining a compact integrated structure during operation.
3Loss of energy
If known heating apparatus configurations are used, then heating function is provided, but energy efficiency decreases
Solution Approach 1:
The heat exchanging units are positioned to maximize continuous heat transfer from exhaust gases to the heated fluid. The integrated design ensures that heat energy is continuously extracted from the exhaust stream through optimized flow paths and heat exchange surfaces, reducing energy loss while maintaining a relatively simple structural configuration.
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
The apparatus is compact, robust, and efficient, reducing maintenance needs while enabling flexible and independent heating of different fluids, thus optimizing space and energy use.
Implementation Method 1
The burners are configured to burn fuel gas or liquid further supplied to each of the burners together with the combustion air received from the combustion air fan unit to get hot exhaust gasses
Implementation Method 2
The heat exchanging units are configured to receive the exhaust gasses from the burners and to transfer heat from the exhaust gasses to fluids to be heated, provided within the heat exchanging units
Data Source
Figure 1~2
Figure 3
Figure 4A~4B
AI summary
A heating apparatus (1), in particular for recreational vehicles like campers or caravans, comprises a heating unit (10) and two separate heat exchanging units (30) and (40), which are coupled to the heating unit (10) in parallel with each other. The heating unit (10) comprises one burner (20) and (22) for each heat exchanging unit (30) and (40), and at least one combustion air fan unit (26) configured to supply the burners (20) and (22) with combustion air. The burners (20) and (22) are configured to burn fuel gas or liquid further supplied to each of the burners (20) and (22) together with the combustion air received from the combustion air fan unit (26) to get hot exhaust gasses. The heat exchanging units (30) and (40) are configured to receive the exhaust gasses from the burners (20) and (22), and to transfer heat from the exhaust gasses to fluids to be heated, provided within the heat exchanging units (30) and (40). The heat exchanging units (30) and (40) are positioned in parallel with each other side by side on one side of the heating unit (10). Furthermore, the present invention refers to a recreational vehicle with such a heating apparatus (1).