Household refrigeration appliance with a door stop bar having a heating line thermally coupled thereto by a heat conducting transmission medium
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Solution Overview
Problem
Existing household refrigeration appliances face challenges in achieving effective heat transfer to the door stop bar and maintaining thermal insulation, leading to inefficient energy consumption and compromised sealing due to complex and space-intensive frame heating arrangements.
Innovation Solution
A household refrigeration appliance design featuring a door stop bar with a tubular heating line thermally coupled to a front panel via a heat-conducting medium, such as butyl adhesive tape, allows for targeted and efficient heat transfer while maintaining a compact and thermally insulated structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a frame heating arrangement is incorporated in the door stop bar as a Peltier element, then heating function is achieved, but the structure becomes very complex and space-consuming
Solution Approach 1:
The patent extracts the heating function from the complex Peltier element and implements it using a simple heating line (heating cable) instead. This simplifies the structure by removing the need for ceramic plates, semiconductor pieces, and ferromagnetic plates while maintaining the heating capability through a more straightforward heating line arrangement.
Solution Approach 2:
The patent replaces the expensive and complex Peltier element with a simpler, more cost-effective heating line that can be easily installed and replaced. The heating line is a conventional, readily available component that achieves the same heating function without the complexity of solid-state thermoelectric conversion.
2Ease of manufacture
If the heating line is arranged spaced at a distance from the front strip with an air space, then installation is simplified, but heat transfer to the front strip is restricted
Solution Approach 1:
The patent introduces a heat-conducting transmission medium as an intermediary between the heating line and the front panel. This medium fills the air space and provides a thermal bridge that efficiently transfers heat from the heating line to the front panel, eliminating the heat transfer restriction caused by the air gap while maintaining installation simplicity.
Solution Approach 2:
The patent uses a composite structure combining the heating line, heat-conducting transmission medium, and front panel. This composite arrangement leverages the thermal conductivity of the transmission medium to bridge the gap between the heating line and front panel, achieving both easy installation and effective heat transfer.
3Ease of manufacture
If the door stop bar is arranged in a fixed position on the walls, then assembly is simplified, but closing behavior is restricted when the door stop bar is tilted or rotated
Solution Approach 1:
The patent transitions from a completely fixed door stop bar to a dynamic mounting system that allows controlled adjustment. The door stop bar can be tilted and rotated within certain limits during assembly to achieve proper alignment and closing behavior, while still maintaining a fixed position during operation. This dynamic adjustment capability resolves the contradiction between assembly simplicity and door closing performance.
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 design enhances heat transfer to the door stop bar, improves thermal insulation, and prevents unwanted heat introduction into the refrigeration space, resulting in efficient energy use and effective sealing.
Implementation Method 1
a heat-conducting transmission medium that is separate from the front panel and the heating line and is embodied from a solid material
Data Source
AI summary
A household refrigeration appliance has a housing in which there is embodied a receiving space for foodstuffs, a first door and a second door separate therefrom. The doors closing a front-side receiving opening of the receiving space to the front. A door stop bar is disposed externally to the doors which is arranged in the receiving opening and is connected by a first end to a first boundary wall and by a second end to a second boundary wall. Wherein in the closed state the doors abut against the door stop bar on the front side, and have a frame heating which is arranged on the door stop bar for the purpose of heating the door stop bar. A heating line of the frame heating is arranged behind a front panel of the door stop bar and is thermally coupled to the front panel by the heat-conducting transmission medium.