One-Way Throttle Cooling for Outdoor AC Control Heat Dissipation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Variable frequency air conditioners face challenges in high temperature environments due to inefficient heat dissipation in outdoor electrical control systems, leading to reduced compressor operation frequency, compromised cooling effectiveness, and reliability issues such as condensation and temperature drops.
Innovation Solution
Incorporating a one-way throttle valve between the outdoor and indoor heat exchangers, which fully turns on during coolant circulation and throttles when coolant flows back, along with a heat dissipation subassembly and throttling element, to effectively dissipate heat and manage coolant temperature, reducing condensation and improving stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If air convection heat dissipation is used in outdoor electrical control system, then the structure is simple, but heat dissipation effect is poor under high temperature environment
Solution Approach 1:
The patent introduces a heat dissipation water tank filled with water as an intermediary heat dissipation medium. The water absorbs heat from electrical control components through direct contact and convection, significantly improving heat dissipation effectiveness compared to air convection alone, while maintaining relative structural simplicity
Solution Approach 2:
The patent utilizes water (hydraulic medium) for heat dissipation by filling the heat dissipation water tank with water and using water circulation to transfer heat from electrical components. This hydraulic-based heat dissipation system provides superior thermal conductivity and heat transfer efficiency compared to air convection
2Temperature
If compressor operation frequency is decreased to reduce heat production, then electrical control system temperature is controlled, but cooling effect and user comfortability are greatly affected
Solution Approach 1:
The patent extracts the heat dissipation function from the compressor operation control by introducing a separate heat dissipation water tank system. This allows the compressor to maintain high operation frequency for adequate cooling while the independent water-based heat dissipation system separately manages the temperature of electrical control components
Solution Approach 2:
The patent segments the heat dissipation function from the compression function by creating a dedicated heat dissipation water tank system with water circulation paths separate from the refrigeration cycle. This segmentation enables independent optimization of both compression performance and electrical component thermal management
3Reliability
If low temperature coolant is used for heat dissipation, then heat dissipation effect is improved, but condensation water is produced and temperature drops too much affecting reliability
Solution Approach 1:
The patent optimizes the temperature parameters of the coolant by controlling the water temperature in the heat dissipation water tank to be slightly lower than ambient temperature but not excessively cold. This parameter optimization achieves effective heat dissipation while preventing condensation and excessive temperature drops that would harm system reliability
Solution Approach 2:
The patent prevents harmful effects by designing the heat dissipation system to maintain water temperature above the dew point, thereby cushioning against condensation formation. The system proactively controls temperature parameters to avoid the harmful effects of excessive cooling before they can occur
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 enhances the heat dissipation efficiency for electrical control elements, stabilizes the system, reduces condensation, and improves the air conditioner's performance and market competitiveness by allowing higher compressor frequency operation and increased refrigerating capacity in high temperatures.
Implementation Method 1
a heat dissipation subassembly for heat dissipation of the electrical control element
Implementation Method 2
the one-way throttle valve is fully turned on, and in a flowing direction from the second valve port to the first valve port, the one-way throttle valve is a throttling valve
Implementation Method 3
a metal cooling fin dissipates heat through air convection
Implementation Method 4
an outdoor heat exchanger and an indoor heat exchanger
Data Source
AI summary
An air conditioner (100), comprising a compressor (110), a reversing assembly (120), an outdoor heat exchanger (130), an indoor heat exchanger (140), an electric control heat sink assembly (150), a unidirectional throttle valve (160) and a throttle component (170). The unidirectional throttle valve (160) comprises a first valve port (161) and a second valve port (162), on the flow direction from the first valve port (161) to the second valve port (162), the unidirectional throttle valve (170) is fully turned on, and on the flow direction from the second valve port (162) to the first valve port (161), the unidirectional throttle valve (170) is a throttle valve.