Evaporator and refrigerator having the same
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Direct cooling type refrigerators with roll-bond type evaporators face challenges in frost removal, leading to reduced cooling efficiency and difficulty in maintaining food freshness due to the lack of an effective defrosting mechanism, resulting in prolonged defrosting times and increased power consumption.
Innovation Solution
A roll-bond type evaporator with a heating wire heater integrated into the case, allowing for efficient heat generation to melt frost, reducing defrosting time, and enhancing cooling efficiency without the need for additional space or complex fabrication processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a defrosting heater is installed at a roll-bond type evaporator, then frost removal efficiency is improved, but device complexity increases
Solution Approach 1:
The heating wire heater is integrated directly into the evaporator case structure, merging the defrosting function with the evaporator body. This eliminates the need for separate defrosting devices and reduces overall system complexity while maintaining effective frost removal capability.
Solution Approach 2:
The evaporator case serves dual functions: as the structural housing for the cooling mechanism and as the mounting structure for the heating wire heater. This multi-functionality reduces the number of separate components needed in the system.
2Device complexity
If natural defrosting is used in direct cooling type refrigerators, then device complexity is reduced, but loss of time increases
Solution Approach 1:
The heating wire heater is pre-installed within the evaporator case structure, ready for immediate activation when frost accumulation is detected. This eliminates the delay associated with natural defrosting while maintaining a relatively simple device structure.
Solution Approach 2:
The heating wire heater can be activated periodically or on-demand based on frost detection, providing controlled defrosting cycles that are more efficient than passive natural defrosting while keeping the system simple.
3Productivity
If a heating wire heater is integrated into the evaporator case, then cooling efficiency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The heating wire heater is designed as a separate component that can be independently manufactured and then integrated into the evaporator case. This segmentation allows for specialized manufacturing of the heater component while keeping the overall evaporator manufacturing process manageable.
Solution Approach 2:
The evaporator case acts as an intermediary structure that houses and positions the heating wire heater. This intermediary role simplifies the integration process by providing a dedicated mounting structure that reduces precision requirements for direct attachment.
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
The integrated heating wire heater efficiently removes frost, reducing defrosting time, maintaining food freshness, and lowering power consumption by improving cooling efficiency, while allowing for mass production through simplified fabrication.
Implementation Method 1
a heating wire heater inserted into the heating tube to surround the evaporator case, and generating heat, in response to power supplied
Implementation Method 2
an evaporator cooling surrounding air by a cooling operation that refrigerant introduced from the condenser absorbs latent heat while evaporated
Implementation Method 3
a condenser condensing high-temperature and high-pressure refrigerant compressed in the compressor in a manner of radiating heat
Data Source
AI summary
The present disclosure relates to an evaporator, including an evaporator case formed in a box shape with both sides open in a manner of bending two case sheets coupled to each other, a cooling tube left as an empty space between the two case sheets to form a cooling passage for a flow of refrigerant, a heating tube left as an empty space between the two case sheets in a non-overlapping manner with the cooling tube, and a heating wire heater inserted into the heating tube to surround the evaporator case, and generating heat, in response to power supplied, such that heat for defrosting is transferred to the evaporator case.