Compressor refrigerator for a motor vehicle
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Solution Overview
Problem
Refrigerators in motor vehicles, such as camper vans, face challenges in maintaining efficient cooling performance due to higher internal temperatures, especially when mounted at elevated positions, and existing designs often inefficiently manage heat dissipation and air flow, leading to reduced performance.
Innovation Solution
A compressor refrigerator design with a housing and cooling system that includes a cooling fan, compressor, and an air funnel to guide air flow past components, along with a control arrangement for operating in different modes (day and night) to optimize cooling capacity and noise/power consumption, utilizing a furniture cabinet that integrates with the vehicle chassis to define air flow paths and prevent cold and hot air mixing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the refrigerator is mounted at an elevated position in the vehicle, then it is more accessible to occupants, but the internal temperature increases and cooling performance decreases
Solution Approach 1:
The air flow path is segmented into distinct cold and hot zones using a divider panel. The cold air flow path is separated from the hot air flow path, allowing independent optimization of each zone. This segmentation enables the refrigerator to maintain effective cooling despite elevated mounting position by ensuring dedicated cold air circulation.
Solution Approach 2:
Different regions of the refrigerator are given different functional qualities. The storage space is optimized for cold storage while the rear housing area is designed for heat dissipation. The divider panel creates localized cold and hot zones, allowing the system to simultaneously achieve effective refrigeration and efficient heat management in different locations.
2Reliability
If the cooling system operates at high capacity, then cooling performance is improved, but noise and power consumption increase
Solution Approach 1:
The control arrangement provides dynamic operation modes that adjust system behavior based on conditions. The day mode optimizes for cooling capacity when high performance is needed, while the night mode reduces power consumption and noise when full cooling capacity is not required. This dynamic adjustment allows the system to adapt to varying operational requirements.
Solution Approach 2:
The system operates in periodic cycles with different modes (day/night modes) that alternate based on operational needs. This periodic switching between high-performance and energy-saving modes allows the refrigerator to maintain reliability while managing power consumption and noise levels appropriately for different time periods.
3Productivity
If air flow is increased to improve heat dissipation, then cooling efficiency is improved, but cold and hot air may mix reducing effectiveness
Solution Approach 1:
The air flow system is segmented into separate cold and hot air pathways using a divider panel. Cold air intake and circulation is separated from hot air exhaust paths. This segmentation allows high air flow rates for efficient heat dissipation while preventing mixing between cold and hot air streams, maintaining refrigeration effectiveness.
Solution Approach 2:
The divider panel acts as an intermediary structure that physically separates cold and hot air flow paths. This intermediate element enables independent optimization of cold air circulation for refrigeration and hot air flow for heat dissipation, preventing direct mixing while allowing both processes to operate at high 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
The design enhances cooling performance by efficiently routing air flow and managing heat dissipation, maintaining effective refrigeration despite elevated temperatures and limited space constraints, while also offering adjustable operation modes for reduced noise and power consumption.
Implementation Method 1
a cooling fan (22) and a compressor (24)... The housing (14) cooperates with a general shape of an inside of a vehicle (10) to create a venting channel for maintaining or improving the performance of the compressor refrigerator (10)
Implementation Method 2
a cooling fan (22) and a compressor (24)
Implementation Method 3
The rear housing (40) may be secured to a rear wall of the refrigerator (10)... creating a venting channel for maintaining or improving the performance
Implementation Method 4
cooling system (18) that cools the interior volume
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
Refrigerator arrangement (10) for a motor vehicle (12) comprising: a compressor refrigerator (10) including a housing defines an interior volume and a cooling system (18) for cooling the interior volume; and a furniture cabinet (26); wherein the compressor refrigerator and furniture cabinet (26) generally follow a shape of the a chassis (14) of the motor vehicle and cooperate with the motor vehicle to define a path for cooling air (A) to cool components of the cooling system.