Wall-Mounted AC Indoor Unit With Mixed Downward Airflow
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Solution Overview
Problem
Existing wall-mounted air conditioner indoor units have a small air volume and slow indoor air circulation, with hot exhaust air being blown directly to users, causing discomfort, especially in refrigeration mode, and lack the ability to blow air downwards effectively.
Innovation Solution
A wall-mounted air conditioner indoor unit design featuring a flow air apparatus with go-through airduct bodies, a centrifugal fan, and an air exhaust portion that surrounds hot exchange air passages, allowing for the mixing of non-hot exchange air with hot exchange air and directing the mixed air downwards, increasing air volume and circulation speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If all exhausted air is hot exchange air, then the air conditioner can maintain simple structure, but the air volume is relatively small and circulation speed is slow
Solution Approach 1:
The air outlet is divided into two separate outlets: a first air outlet for discharging hot exchange air and a second air outlet for discharging mixed air. This segmentation allows the system to handle different air streams separately, increasing overall air volume while maintaining manageable structural complexity through modular design
Solution Approach 2:
A flow air apparatus is introduced as an intermediary component between the heat exchanger and the second air outlet. This apparatus includes airduct bodies with go-through passages that facilitate the mixing of hot exchange air with non-hot exchange air, enabling increased air volume without proportionally increasing system complexity
2Object-affected harmful factors
If hot exchange air is blown directly to users, then the air conditioner can maintain simple structure, but the exhausted air is not gentle enough and users feel uncomfortable
Solution Approach 1:
The flow air apparatus acts as an intermediary that mixes hot exchange air with non-hot exchange air before discharge. This mixing process gentles the exhaust air temperature and flow characteristics, improving user comfort while avoiding the need for complex temperature control systems
Solution Approach 2:
The system changes the temperature parameter of the exhaust air by mixing hot exchange air with cooler non-hot exchange air. This parameter modification makes the discharged air more comfortable for users while maintaining a relatively simple structural configuration
3Speed
If the air conditioner is mounted at a relatively high position, then it can be installed on the wall, but the air exhausted direction should be downward to speed up flow and temperature adjustment
Solution Approach 1:
The air duct bodies are designed with adjustable or oriented structures that can direct air flow dynamically. The go-through passages are configured to facilitate downward air movement, optimizing flow speed and temperature adjustment while maintaining installation flexibility through the modular air duct design
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 design enhances air flowability and temperature adjustability by increasing air volume and gentleness, providing a more comfortable experience for users by blowing mixed air downwards from a high installation position without obstacles.
Implementation Method 1
a centrifugal fan, located inside the volute, is disposed inside the housing and above the flow air apparatus
Implementation Method 2
a heat exchanger for exchanging heat with the introduced outside air
Implementation Method 3
a position that is on the rear housing and that is corresponding to the mixed air outlet is provided with a non-hot exchange air inlet
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The present invention discloses a wall-mounted air conditioner indoor unit, including a front housing and a rear housing forming a housing of the indoor unit, heat exchangers are disposed inside the housing, the housing is provided with main air intake portions, a lower portion of the front housing is provided with a mixed air outlet, the rear housing is provided with a non-hot exchange air inlet, a flow air apparatus is disposed inside the housing, a volute and a centrifugal fan located inside the volute are disposed inside the housing and above the flow air apparatus, an air exhaust portion of the volute faces the hot exchange air passage of the flow air apparatus, the air exhaust portion of the volute is further provided with a surrounding portion that extends to the flow air apparatus and that surrounds the hot exchange air passages, and an air mixed cavity is disposed between the surrounding portion and the hot exchange air passages. The indoor unit not only can exhaust gentle mixed air having a large air volume and a suitable temperature but also can blow the mixed air out downwards, so as to improve flowability and temperature adjustability of space air when the wall-mounted air conditioner indoor unit is used.