Refrigerator Bypass Pipe Design for Simultaneous Chamber Cooling
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Solution Overview
Problem
Conventional refrigerators operate storage chambers independently, leading to inefficient cooling and increased power consumption due to selective cooling operations and lack of simultaneous operation of refrigerating and freezing chambers, as well as inefficient defrosting processes.
Innovation Solution
A refrigerator system with a compressor, condenser, flow control part, branch pipes, evaporators, and a bypass pipe, allowing for simultaneous cooling of both chambers and efficient defrosting operations by controlling refrigerant flow through a four-way valve and bypass expander, enabling simultaneous cooling and defrosting without the need for additional heaters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate evaporators are used for refrigerating and freezing chambers, then each chamber can be cooled independently, but the refrigerator cannot cool both chambers simultaneously and power consumption increases
Solution Approach 1:
The patent applies multi-functionality by enabling a single evaporator to serve both refrigerating and freezing chambers through a four-way valve. The evaporator can be selectively connected to different chambers based on operational needs, allowing one component to perform multiple cooling functions that previously required separate evaporators.
Solution Approach 2:
The patent implements dynamics through the four-way valve that dynamically redirects refrigerant flow between different chambers. This dynamic switching capability allows the system to adapt refrigerant distribution in real-time, enabling simultaneous or selective cooling of chambers without requiring fixed, dedicated evaporators for each chamber.
2Use of energy by stationary object
If selective cooling operation is used to reduce power consumption, then energy efficiency improves, but temperature control stability deteriorates
Solution Approach 1:
The patent maintains continuous useful action by enabling simultaneous operation of the evaporator with both chambers through strategic refrigerant flow distribution. The four-way valve allows the evaporator to continuously provide cooling to both chambers at the same time, eliminating the intermittent cooling cycles that cause temperature fluctuations and maintain stable temperatures without sacrificing energy efficiency.
3Reliability
If defrosting heater is installed at each evaporator, then defrosting function is provided, but device complexity and power consumption increase
Solution Approach 1:
The patent applies universality by using the single evaporator structure to serve multiple chambers, which inherently reduces the number of separate defrosting heaters needed. Since one evaporator replaces multiple evaporators, the corresponding defrosting system is simplified, requiring fewer heating elements while still providing defrosting capability for all chambers through the shared evaporator.
Solution Approach 2:
The patent implements self-service through the bypass expander that enables the evaporator to self-defrost by controlling refrigerant flow. The system can redirect refrigerant through the bypass line to create cooling cycles that naturally remove frost from the evaporator surfaces, eliminating the need for external heating elements and reducing both device complexity and power consumption.
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
Enables effective simultaneous cooling of both the refrigerating and freezing chambers while reducing power consumption by allowing for efficient defrosting operations without additional heating elements, improving operational efficiency and temperature control.
Implementation Method 1
a compressor configured to compress a refrigerant
Implementation Method 2
a condenser configured to condense the refrigerant compressed by the compressor
Implementation Method 3
an expander installed at the plurality of the branch pipes to depressurize the refrigerant
Implementation Method 4
a plurality of evaporators connected to the plurality of branch pipes
Data Source
AI summary
Provided are a refrigerator and a control method thereof. The refrigerator according to the embodiment includes a compressor configured to compress a refrigerant; a condenser configured to condense the refrigerant compressed by the compressor; a flow control part disposed at an exit side of the condenser to switch a flow direction of the refrigerant condensed by the condenser; a plurality of branch pipes configured to extend from the flow control part; an expander installed at the plurality of the branch pipes to depressurize the refrigerant; a plurality of evaporators connected to the plurality of branch pipes; and a bypass pipe configured to extend from an exit side of one of the plurality of evaporators to an entrance side of the other evaporator and having a bypass expander installed thereat to depressurize the refrigerant.