Refrigerant Heat-Sink Assembly for Outdoor AC Control Cooling
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
The air conditioner employs a series connection of first and second one-way throttle valves between outdoor and indoor heat exchangers, allowing coolant to dissipate heat effectively in both refrigeration and heating modes, reducing the outdoor heat exchanger temperature and minimizing condensation, while maintaining stability and simplifying the system's structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a metal cooling fin dissipates heat through air convection, then the heat dissipation structure is simple, but under outdoor high temperature environment the heat dissipation effect is poor
Solution Approach 1:
The patent introduces a heat dissipation tube containing coolant as an intermediary heat dissipation medium. The coolant flows through the heat dissipation tube to carry away heat from the electrical control system, replacing direct air convection with fluid-based heat transfer. This resolves the contradiction by achieving superior heat dissipation performance in high temperature environments while maintaining structural simplicity through the integrated tube design.
2Temperature
If the operation frequency of the compressor is decreased to reduce heat production, then the electrical control system temperature is controlled, but the cooling effect of the air conditioner is greatly affected
Solution Approach 1:
The patent segments the heat dissipation function from the compressor operation control. The electrical control system is equipped with an independent heat dissipation system consisting of a heat dissipation tube and coolant circulation path. This allows the compressor to operate at high frequency for optimal cooling performance while the separate heat dissipation system independently manages the temperature of the electrical control components, resolving the contradiction between temperature control and cooling effectiveness.
3Temperature
If a low temperature coolant is used for heat dissipation, then the heat dissipation effect is improved, but condensation water is produced and the temperature drops too much affecting reliability and safety
Solution Approach 1:
The patent optimizes the coolant temperature parameter within a specific range (5℃-35℃) to balance heat dissipation efficiency with system reliability. By controlling the coolant temperature to be higher than ambient temperature in certain operating conditions, the system achieves effective heat dissipation while preventing condensation water formation and excessive temperature drops that would compromise electrical component reliability and safety.
4Temperature
If the coolant is throttled before flowing into the heat dissipation subassembly, then the cooling effect is improved, but condensed water is produced
Solution Approach 1:
The patent implements preliminary heating of the coolant through the outdoor heat exchanger before the coolant enters the heat dissipation subassembly. This preliminary action raises the coolant temperature above the dew point, preventing condensation water formation during subsequent throttling. The system achieves effective cooling through controlled throttling while eliminating the harmful condensation effect by preparing the coolant state in advance.
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 cooling and heating performance, improves the stability and reliability of the electrical control element, reduces production costs, and increases market competitiveness by effectively dissipating heat and minimizing condensation.
Implementation Method 1
a heat dissipation subassembly for heat dissipation of the electrical control element
Implementation Method 2
a outdoor heat exchanger and an indoor heat exchanger
Implementation Method 3
a first one-way throttle valve and a second one-way throttle valve disposed in series connection between the outdoor heat exchanger and the indoor heat exchanger
Data Source
Figure 1~2
Figure 3~4
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 first unidirectional throttle valve (160) and a second unidirectional throttle valve (160'). The electric control heat sink assembly (150) comprises an electric control component (151) and a heat dissipation assembly (152). The first unidirectional throttle valve (160), on the flow direction from a first valve port (161) to a second valve port (162), is completely turned on. On the flow direction from the second valve port (162) to the first valve port (161), the first unidirectional throttle valve (160) is a throttle component. The second unidirectional throttle valve (160'), on the flow direction from a third valve port (161') to a fourth valve port (162'), is completely turned on. On the flow direction from the fourth valve port (162') to the third valve port (161'), the second unidirectional throttle valve (160') is a throttle component.