Refrigerated Display Cabinet Airflow Layout for Bottom Cooling
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Solution Overview
Problem
Refrigerated sales furniture of the front access type has limited space for presenting goods due to inefficient cooling of the bottom area, as the fan and evaporator are positioned underneath the lowest shelf, restricting the available space and cooling efficiency.
Innovation Solution
A refrigerated sales furniture design with an air suction channel, fan, and cold air channel configuration that directs cold air from the back to the bottom area, ensuring efficient cooling across the entire presentation space, including the bottom area, by arranging the fan behind the bottom area and using air guiding shelves to direct cold air vertically and horizontally.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the fan and evaporator are arranged underneath the lowest goods presentation shelf, then the cooling mechanism is compact, but the available space for presenting goods is reduced and bottom area cooling efficiency deteriorates
Solution Approach 1:
The air suction channel is repositioned from a vertical arrangement underneath the lowest shelf to a horizontal arrangement at the rear of the goods presentation space. This dimensional change allows the cooling components to be located in the rear space rather than occupying the bottom presentation area, thereby maximizing goods display space while maintaining effective bottom area cooling through the strategically positioned suction channel.
Solution Approach 2:
The air suction channel acts as an intermediary element that connects the rear space (where the fan is located) to the bottom area of the goods presentation space. By positioning the suction channel's front end at the bottom area and its rear end at the rear space, it mediates the airflow path, enabling cold air to be effectively delivered to the bottom area without the fan and evaporator physically occupying that space.
2Device complexity
If the fan and evaporator are arranged underneath the lowest goods presentation shelf, then the structure is simplified, but the bottom area cooling efficiency deteriorates
Solution Approach 1:
The air channel system is segmented into distinct functional portions: an air suction channel with a front end portion positioned at the bottom area and a rear end portion positioned at the rear space, and a cold air channel that branches off to deliver cold air specifically to the bottom area. This segmentation allows the cooling system to address the bottom area's cooling needs independently while maintaining overall structural efficiency.
Solution Approach 2:
The air channel configuration provides localized cooling optimization by directing cold air specifically to the bottom area through the cold air channel's front portion, while the rear portion of the air suction channel is positioned at the rear space for efficient air intake. This local quality approach ensures that each area receives appropriate cooling attention without requiring complex centralized control.
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 maximizes the available space for presenting goods while ensuring efficient cooling of the entire presentation space, particularly the bottom area, reducing energy consumption and maintaining stable temperatures.
Implementation Method 1
a fan for conveying air from the air suction channel (20) through an air pressure channel (32), through an evaporator (46), through a cold air channel (48) and through a perforated goods presentation space rear wall (16) to the goods presentation space (10)
Implementation Method 2
conveying air from the air suction channel (20) through an air pressure channel (32), through an evaporator (46), through a cold air channel (48)
Data Source
AI summary
A refrigerated sales furniture (2) according to the present invention comprises a furniture rear wall (6) extending substantially upright from a base (4); a goods presentation space (10) including a bottom area (12); an air suction channel (20) for sucking air from a lower front end portion of the refrigerated sales furniture (2), the air suction channel (20) having a rear air suction channel portion (26) being arranged at a position behind the bottom area (12) of the goods presentation space (10) and arranged adjacent to and substantially in parallel to the furniture rear wall (4); a fan (30) for conveying air from the air suction channel (20) through an air pressure channel (32), through an evaporator (46), through a cold air channel (48) and through a perforated goods presentation space rear wall (16) to the goods presentation space (10), the fan (30) being arranged between the air suction channel (20) and the air pressure channel (32) at a height corresponding to the height of the bottom area (12) of the goods presentation space (10); the air pressure channel (32) having a lower air pressure channel portion (34) that extends in front of and substantially in parallel to the rear air suction channel portion (26) of the air suction channel (20); the cold air channel (48) having a lower cold air channel portion (54) for conveying cold air through the lower rear wall portion (18) of the perforated goods presentation space rear wall (16) to the bottom area (12) of the goods presentation space (10), the lower rear wall portion (18) of the perforated goods presentation space rear wall (16) being positioned behind the bottom area (12) of the goods presentation space (10), the lower cold air channel portion (54) extending between the lower air pressure channel portion (34) of the air pressure channel (32) and the lower rear wall portion (18) of the perforated goods presentation space rear wall (16).