Gas fired window heater
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Solution Overview
Problem
Conventional room heaters, especially gas-fired ones, require venting through walls and cannot be easily moved or installed in windows without modifying the structure, making them inefficient and costly for heating additions to buildings where main heating systems are inadequate.
Innovation Solution
A window-mounted propane or gas-fired heater with tubular heat exchangers, in-shot burners, and a blower for efficient heat transfer, using outside air for combustion and exhausting products without wall modifications, with a portable fuel supply and double-wall construction for safety, allowing for easy installation and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If gas-fired wall heaters are used, then heating efficiency is improved, but wall modifications are required for venting and combustion air
Solution Approach 1:
The venting system is extracted from the wall structure and integrated into the window frame itself. The window frame includes dedicated venting openings that allow combustion gases to be exhausted directly through the window, eliminating the need for wall modifications while maintaining proper venting functionality for gas-fired heating.
Solution Approach 2:
The window assembly serves multiple functions: it provides the building envelope opening, houses the heater unit, provides venting for combustion gases, and supplies combustion air. This multi-functionality eliminates the need for separate wall modifications that would otherwise be required for venting and air supply.
2Ease of operation
If portable electrical heaters are used, then installation flexibility is improved, but heating efficiency and cost-effectiveness deteriorate
Solution Approach 1:
The heater is merged with the window assembly, creating an integrated unit that combines the benefits of permanent installation (gas-fired efficiency) with the flexibility of window-mounted placement. The heater unit can be installed in various window locations throughout the building, providing efficient gas-fired heating without the need for wall modifications or permanent structural changes.
3Use of energy by moving object
If wall mounted heaters are used, then heating performance is improved, but removal and relocation become difficult
Solution Approach 1:
The heater is extracted from the wall mounting configuration and relocated to the window frame mounting. This allows the high-performance gas-fired heating to be achieved while maintaining installation flexibility, as the window-mounted unit can be easily removed and relocated to different windows or buildings without structural repairs.
4Reliability
If conventional venting systems are used, then combustion safety is improved, but installation complexity and cost increase
Solution Approach 1:
The venting system transitions from a horizontal wall penetration to a vertical exhaust through the window frame. The venting openings are positioned in the window frame to exhaust combustion gases vertically or at an angle away from the building, providing safe combustion gas discharge without the complexity of horizontal wall venting systems.
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 solution provides efficient, economical, and safe heating without wall modifications, allowing for easy relocation and efficient heat transfer, enhancing indoor air quality and reducing installation costs.
Implementation Method 1
one or more burners, preferably in-shot burners, for combusting a gaseous fuel, preferably propane
Implementation Method 2
The products of combustion flow through the tubular heat exchangers and are exhausted to the atmosphere
Implementation Method 3
A blower is provided for introducing air from within the room (or outside air) into the heating chamber to be heated by the tubular heat exchangers and for discharging the heated air into the room
Data Source
AI summary
A heater is disclosed that is installed in a window opening in a room for heating the room. The heater has a cabinet having an inner and an outer cabinet with an air gap therebetween, with a heating chamber in the inner cabinet. A burner is provided that is located on an outside wall of the heater. The burner has an inlet and an outlet with a combustion nozzle therebetween, with the burner outlet in communication with a respective serpentine heat exchange tube within said heating chamber where the heat exchange tube receives the hot products of combustion from its burner and discharges the products of combustion to the atmosphere. The heater has a blower that draws air from within the room and forces the air over and around the heat exchange tube(s) within the heating chamber discharges the heated air back into the room.