Radiant Panel Cabin Heating for Mobile Work Machines
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Solution Overview
Problem
Existing battery-powered industrial trucks face inefficiencies in cabin heating due to high energy consumption, poor heat distribution, and ergonomic constraints, as well as issues with air circulation and dust circulation in traditional electric heating systems.
Innovation Solution
The implementation of radiant panel heating elements, such as infrared panel heating elements with an electrically conductive material layer, which convert electrical energy directly into thermal radiation, providing efficient and comfortable heating without air circulation, thus reducing energy consumption and maintaining comfort with lower interior temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a traditional electric heater with fan device is used to heat the driver's cab, then the cabin can be heated, but the energy consumption is high and reduces service life with one battery charge
Solution Approach 1:
The patent replaces the mechanical fan-based air circulation system with a radiant heating system that uses infrared panels to directly radiate heat to surfaces and occupants. This eliminates the need for mechanical air movement components and reduces energy consumption by heating objects directly rather than heating and circulating air.
Solution Approach 2:
The patent changes the heating mechanism from convective air heating to radiant infrared heating. This parameter change allows heat to be transferred directly through radiation to surfaces and people, bypassing the need to heat the air medium, thereby reducing overall energy consumption while achieving the same thermal comfort.
2Temperature
If a traditional electric heater with fan device is used, then the cabin can be heated, but dust and impurities are circulated inside the driver's cab
Solution Approach 1:
The patent eliminates the mechanical fan system that causes dust circulation by replacing it with a radiant heating system. The infrared panels emit thermal radiation that directly heats surfaces and occupants without requiring air movement, thereby preventing dust and impurities from being circulated throughout the cabin.
3Temperature
If a traditional electric heater with fan device is used, then the cabin can be heated, but noise is generated within the driver's cab
Solution Approach 1:
The patent replaces the noise-generating mechanical fan system with a silent radiant heating system. The infrared panels produce heat through electromagnetic radiation without any moving parts, completely eliminating the noise that would otherwise be generated by fan operation while maintaining effective cabin heating.
4Temperature
If an additional assembly heater is installed in the driver's cab, then the cabin can be heated, but a considerable amount of space is required, reducing ergonomics
Solution Approach 1:
The patent integrates the radiant heating panels into existing cabin structures such as the dashboard, door panels, or ceiling surfaces. By nesting the heating elements within already-present structural components, the system achieves effective cabin heating without requiring additional dedicated space, thereby preserving ergonomic design and available cabin volume.
Solution Approach 2:
The patent makes existing cabin structural components serve dual functions: their original structural purpose plus heat radiation. The dashboard, door panels, or ceiling are designed to incorporate infrared heating panels, allowing these multi-functional surfaces to both structure the cabin and provide heating, eliminating the need for separate dedicated heating apparatus.
5Temperature
If a central heating resistor is used to heat the cabin, then the cabin can be heated, but the heat distribution is poor and efficiency is low
Solution Approach 1:
The patent divides the heating function into multiple distributed infrared panels positioned throughout the cabin rather than relying on a single central heating source. This segmentation allows heat to be radiated from multiple locations simultaneously, achieving uniform heat distribution across the cabin and reducing energy loss through more efficient direct heating of surfaces and occupants.
Solution Approach 2:
The patent transitions from centralized convective heating to distributed radiant heating. This parameter change in the heating approach allows thermal energy to be delivered directly to surfaces and people from multiple locations, improving heat distribution efficiency and reducing the energy required to achieve comfortable cabin temperatures.
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 achieves a comfortable and efficient cabin heating system with reduced energy usage, extended operating time, and improved ergonomics by directly heating surfaces and minimizing air heating, reducing dust circulation and heat loss, while allowing precise heating control and preventing condensation.
Implementation Method 1
the radiant panel heating element comprising an electrically conductive material layer that, when applied an electrical voltage converts the electrical energy directly into pure thermal radiation energy and releases it
Implementation Method 2
The thermal radiation energy emitted by the surface heating element has the property that the thermal radiation formed by infrared rays, for example, does not heat the air inside the driver's cab, but rather heats the surfaces of bodies and components inside the driver's cab
Data Source
Figure 1
AI summary
The mobile working machine has a driver's cab (4) in which an electrical cabin heating device (20) is provided. The electrical cabin heating device has a surface heating element (25) that is installed as a heating plate inside the driver's cab. The surface heating element is integrated in vehicle components such as driver's seat (6), armrest (9), cover (17), roof pillar (16), car doors (18a,18b), front wall (31), dashboard (32), and rear wall (33) .