Projector Refrigerant Generator Cooling System
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Solution Overview
Problem
Current projector cooling systems face challenges in increasing cooling performance without enlarging the projector size or increasing noise levels, particularly as projector luminance increases, with air cooling systems experiencing noise issues and liquid cooling systems requiring larger sizes.
Innovation Solution
A projector cooling system that utilizes a refrigerant generator and sender, incorporating a moisture absorption/desorption member, blowers, and thermoelectric heat exchangers to transform air into refrigerant gas for cooling, allowing for efficient heat dissipation without the need for refrigerant refilling or reservoirs, thus maintaining compact size and low noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If air cooling is used to cool the projector, then the cooling performance is improved, but the sound noise due to the blower increases
Solution Approach 1:
The patent replaces the mechanical blower system with a refrigerant-based cooling system that uses phase change (evaporation and condensation) of refrigerant to transfer heat. The refrigerant circulates through evaporators and condensers, absorbing heat from cooling targets and dissipating it externally, eliminating the need for high-speed mechanical blowers that generate noise.
Solution Approach 2:
The patent utilizes phase transitions of the refrigerant (liquid to gas in evaporator, gas to liquid in condenser) to achieve cooling. The refrigerant absorbs latent heat during evaporation at the cooling target and releases latent heat during condensation externally, providing efficient cooling without mechanical noise.
2Temperature
If liquid cooling is used to increase cooling performance, then the cooling performance is improved, but the cooler grows in size
Solution Approach 1:
The patent employs a closed-loop refrigerant circulation system where refrigerant is pumped through evaporators and condensers. The hydraulic system uses phase change and pressure differential to move refrigerant, providing high cooling efficiency in a compact configuration compared to liquid cooling systems.
Solution Approach 2:
The refrigerant undergoes phase transitions (evaporation and condensation) to transfer heat efficiently. This phase change mechanism provides high cooling capacity per unit volume, allowing the cooler to be more compact than liquid cooling systems while achieving superior cooling performance.
3Temperature
If the cooling performance is increased to handle higher luminance, then the cooling capability is improved, but the projector grows in size
Solution Approach 1:
The cooling system is segmented into multiple independent evaporators that can be distributed across different cooling targets (light source device, optical modulator, projection optical device). This modular approach allows efficient heat removal from multiple high-heat-generating components simultaneously without requiring a single large cooling unit.
Solution Approach 2:
The refrigerant's phase transition process (evaporation absorbing heat, condensation releasing heat) provides high efficiency heat transfer. This allows the system to handle the increased heat load from higher luminance projectors while maintaining a compact size, as phase change cooling is more space-efficient than conventional cooling methods.
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 system effectively enhances cooling performance while reducing the projector's size and noise levels, improving refrigerant generation efficiency through thermoelectric heating and cooling processes, and eliminating the need for refrigerant refills, offering improved user convenience and reduced weight.
Implementation Method 1
the second heat exchanger includes a thermoelectric element having a heat absorption surface and a heat dissipation surface
Implementation Method 2
the first heat-transfer member cools the air flowing through the circulation channel to generate the refrigerant
Implementation Method 3
the second heat-transfer member has a heat dissipation section configured to heat air which was cooled by the first heat-transfer member
Implementation Method 4
a moisture absorption/desorption member which rotates
Data Source
AI summary
The projector includes a cooler cooling a cooling target based on transformation of a refrigerant into a gas. A refrigerant generator of the cooler includes a moisture absorption/desorption member, a first blower feeding air to the moisture absorption/desorption member, a first heat exchanger, a second blower circulating air inside a circulation channel passing through the first heat exchanger and the moisture absorption/desorption member, a second heat exchanger at least partially disposed in the circulation channel. The second heat exchanger includes a thermoelectric element, a first heat-transfer member coupled to a heat absorption surface of the thermoelectric element, and a second heat-transfer member thermally coupled to a heat dissipation surface of the thermoelectric element. The first heat-transfer member cools the air flowing through the circulation channel. The second heat-transfer member has a heat dissipation section configured to heat the air which was cooled by the first heat-transfer member.