Refrigerated Shelf Multi-Layer Airflow Design for Cooling Efficiency
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Solution Overview
Problem
Existing refrigerated shelves face challenges in achieving optimal cooling efficiency and construction for efficient energy use while maintaining a favorable assembly and user-friendly design.
Innovation Solution
The arrangement of radial fans in the upper half of the vertical space above the evaporator, with intermediate separation to prevent flow short circuits, and the use of distributed openings in the interior cover for airflow, combined with a multi-layered structure and heat-insulating panels, creates an efficient airflow path and thermal insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fans are arranged in the lower area of the vertical space below the evaporator, then the construction is simplified, but airflow short circuits occur and cooling efficiency deteriorates
Solution Approach 1:
The patent inverts the conventional fan arrangement by positioning fans in the upper area above the evaporator instead of below it. This inversion prevents airflow short circuits because the fans draw air from above the evaporator through the flow canal arrangement, ensuring proper airflow direction and improving cooling efficiency while maintaining construction simplicity
2Device complexity
If multiple fans are arranged side-by-side without separation, then device complexity is reduced, but mutual negative flow occurs and cooling performance deteriorates
Solution Approach 1:
The patent introduces an intermediate separation structure (partition wall or baffle) between multiple side-by-side fans. This intermediary element prevents mutual negative flow by directing each fan's airflow through the flow canal arrangement in the back wall group, ensuring that multiple fans work cooperatively rather than interfering with each other, thus maintaining cooling performance while keeping the structure relatively simple
3Adaptability or versatility
If a voluminous soil group design is used, then fan arrangement flexibility is improved, but assembly manageability and user convenience deteriorate
Solution Approach 1:
The patent segments the soil group into a multi-layer structure with distinct functional layers: a first layer containing the evaporator and flow canal arrangement, and a second layer above it containing the fans. This segmentation provides fan arrangement flexibility within the upper layer while making the overall structure more compact and easier to assemble and manage, as each layer has a specific function and can be assembled independently
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 enhances cooling performance by ensuring even airflow and reducing the risk of electrical issues, while providing effective thermal insulation and easy assembly, resulting in improved cooling efficiency and user convenience.
Implementation Method 1
an evaporator or and and in the vertical space for cooling air. Erer heat exchanger of the cooling device is arranged
Implementation Method 2
several side -side fans in the upper half of the vertical space above the evaporator or other heat exchange are arranged
Implementation Method 3
combined with a multi-layered structure and heat-insulating panels, creates an efficient airflow path and thermal insulation
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a cooling unit comprising a base group (11), a rear wall group (12) and an upper group (13), defining a cooling chamber (4) from below, the back and above, and are provided at least in part with components of a cooling device (5) and which have a multi-layered structure with a flow channel arrangement embodied therein. In the base group (11) as well as the rear wall group (12) and the upper group (13) intermediate spaces are formed between respective layers as parts of the flow channel arrangement and the lower intermediate space (11.6) formed in the base group (11) is, on the rear side, in fluidic connection for the circulating air with a lower section of the vertical intermediate space (12.4) formed in the rear wall group (12) and the upper intermediate space (13.7) formed in the upper group (13) is, on the rear side thereof, in fluidic connection for the circulating air with an upper section of the vertical intermediate space (12.4) formed in the rear wall group (12) and an evaporator or another heat exchanger of the cooling device is arranged in the vertical intermediate chamber for generating cooling air. At least one ventilator (56), designed in particular as a radial ventilator, is arranged at least in the vertical intermediate spaces in order to guide the airflow through the intermediate spaces (11.6, 12.4, 13.7) which are the measures allowing an advantageous cooling function.