Device for mangling laundry items
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Solution Overview
Problem
Existing belt mangles for laundry mangling require inefficient external energy sources for heating the pressing surface, such as steam, which consumes additional space and resources.
Innovation Solution
A double-walled mangle body with a cavity containing a heat transfer medium and a heating device, such as a boiler or radiant heater, is used to efficiently heat the pressing surface, allowing for targeted and compact energy generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If external steam or energy sources are used to heat the pressing surface, then the pressing surface can be heated, but additional space and lines for steam supply are required and the heating is ineffective
Solution Approach 1:
The heating device is merged with the mangle body by integrating it into the double-walled structure. The heating element is positioned within the cavity between the inner and outer walls of the mangle body, combining the heating function with the structural design of the mangle body itself, thereby eliminating the need for separate external steam supply lines and reducing device complexity
Solution Approach 2:
A heat transfer medium is introduced as an intermediary substance between the heating device and the pressing surface. The heating device heats the heat transfer medium in the cavity, which then transfers heat to the pressing surface through thermal conduction, effectively heating the pressing surface without requiring direct contact between the heating device and the pressing surface
2Loss of energy
If a double-walled mangle body with heat transfer medium is used, then targeted and efficient heating is achieved, but the structure becomes more complex
Solution Approach 1:
The mangle body is segmented into a double-walled structure with an inner wall, outer wall, and cavity in between. This segmentation allows the insertion of a heating device and heat transfer medium within the cavity, creating a dedicated heating zone that improves energy efficiency by directing heat precisely where needed without losing energy to the surrounding environment
Solution Approach 2:
The heating device is merged with the double-walled structure by positioning it within the cavity between the inner and outer walls. This integration combines the structural support function of the double-walled design with the heating function, making the added structural complexity serve dual purposes and justifying the increased device complexity through improved energy efficiency
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 configuration enables effective and energy-efficient heating of the pressing surface, reducing energy consumption and space requirements while maintaining a compact design.
Implementation Method 1
a heat transfer medium is located in the at least one cavity and/or at least one heating device for heating the heat transfer medium in the cavity is arranged entirely or at least partially in the interior of the at least one mangle body. The pressing surface can be effectively heated up by the heat transfer medium
Implementation Method 2
at least one heating device for heating the heat transfer medium in the cavity is arranged entirely or at least partially in the interior of the at least one mangle body
Data Source
AI summary
Providing a boiler in the interior of the mangle body, for heating up a gas in particular by an infrared radiant heater, which heats up a heat transfer medium in the cavity of a double-walled shell of the mangle body. The pressing surface of the mangle body can be heated up effectively and in a targeted manner by this heat transfer medium in the cavity of the double-walled shell of the mangle. Belt mangles are known, in the case of which a circumferentially driven mangling belt runs along the outside of the stationary mangle body, which mangling belt transports the laundry items to be mangled on the smooth pressing surface of the mangle body by entrainment. The heating of the pressing surface has been shown to be ineffective in the case of these known belt mangles.