Air Conditioner Internal Compressor Cooling Using Suction Guide Holes
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Solution Overview
Problem
Air conditioner apparatuses face issues with compressor overheating and control device errors due to inadequate cooling, which can lead to reduced efficiency and operational errors, and expose external components to dust and insects when external cooling solutions are used.
Innovation Solution
The air conditioner apparatus incorporates a case with first and second common passages, indoor and outdoor discharge fans, desiccant heat exchangers, and a suction guide with cooling holes to direct air flow to the compressor and control device, preventing backflow and maximizing ventilation through one-way valves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the compressor is disposed inside the air conditioner apparatus without external cooling, then the device complexity is reduced, but the compressor becomes overheated which shortens lifetime and reduces operating efficiency
Solution Approach 1:
The patent combines the cooling function with the existing air circulation system by directing air flow through the compressor accommodation chamber. The suction guide integrates cooling holes that channel air directly to the compressor, merging the cooling pathway with the air circulation pathway without adding separate cooling infrastructure.
Solution Approach 2:
The system uses its own operating air flow to cool the compressor. The air that circulates through the air conditioner apparatus naturally passes through the compressor chamber, allowing the compressor to be cooled by the system's own operational air movement without requiring external cooling resources.
2Productivity
If the control device is cooled by forming a hole in the external surface, then the operating efficiency is improved, but the control device becomes exposed to dust and insects causing fire hazards
Solution Approach 1:
The control device cooling pathway is nested within the internal air circulation system. Air flows through the case interior and reaches the control box through internal passages, allowing the control device to be cooled by internal air flow without creating external openings that would expose it to harmful external factors.
Solution Approach 2:
The internal air flow acts as an intermediary medium to transfer heat from the control device to the surrounding air. This intermediary cooling method allows heat dissipation without direct exposure to external environment, preventing dust and insect ingress while maintaining effective cooling.
3Temperature
If air flow is directed to the compressor accommodation chamber through cooling holes, then the compressor cooling efficiency is improved, but the airflow to heat exchangers may be reduced
Solution Approach 1:
The suction guide is segmented into different functional surfaces: a first guide surface with cooling holes for compressor cooling, and a second guide surface without cooling holes for maintaining heat exchanger airflow. This segmentation allows independent optimization of cooling paths without compromising heat exchanger performance.
Solution Approach 2:
Different regions of the suction guide have different properties: the first guide surface has cooling holes for local compressor cooling, while the second guide surface maintains open structure for heat exchanger airflow. This local differentiation allows simultaneous optimization of both cooling functions without mutual interference.
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 solution effectively cools the compressor and control device internally, preventing overheating and operational errors while maintaining internal airflow to desiccant heat exchangers, enhancing compressor efficiency and minimizing external exposure risks.
Implementation Method 1
a cooling hole is formed in the suction guide so as to send some of air flown into the case to the compressor accommodation chamber so that some of the air flowing inside the case flows to the compressor accommodation chamber to cool the compressor
Implementation Method 2
a heat exchanger in which a refrigerant circulates through a compressor is desiccant-coated for humidification or dehumidification
Implementation Method 3
a heat exchanger in which a refrigerant circulates through a compressor is desiccant-coated for humidification or dehumidification
Data Source
AI summary
The air conditioner apparatus according to the present invention includes: a case which forms a first common passage, and a second common passage; and a suction guide which is disposed in each of the first common passage and the second common passage, which guides air flown into the case to a first desiccant heat exchanger which is disposed in the first common passage or a second desiccant heat exchanger which is disposed in the second common passage, and which forms a compressor accommodation chamber where a compressor is accommodated, wherein at least two cooling holes for sending some of the air flown into the case to the compressor accommodation chamber and for sending air flowing inside the compressor accommodation chamber to the first common passage or the second common passage are formed in the suction guide.