Wall-mounted air conditioner indoor unit
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Solution Overview
Problem
Existing wall-mounted air conditioner indoor units produce hot exchange air with a small air volume and slow circulation speed, leading to uncomfortable air distribution, especially when blowing cool air directly to users, and lack downward air output directionality which affects air flow and temperature adjustment in rooms.
Innovation Solution
A wall-mounted air conditioner indoor unit design featuring a mixed air outlet on the lower front housing, an air delivery apparatus with inclined air-duct bodies, a centrifugal fan, and a volute that surrounds hot exchange air passages to create a mixed air cavity, allowing for downward air delivery and increased air volume and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If all output air is hot exchange air, then the air conditioner structure is simple, but the air volume is relatively small and circulation speed is slow
Solution Approach 1:
The patent merges hot exchange air and non-hot exchange air into a mixed air outlet, combining two different air sources to increase overall air volume while maintaining structural efficiency
Solution Approach 2:
The air delivery apparatus is segmented into multiple air-duct bodies with different functions (hot exchange air passage, throughway air passage) that work together to deliver different air streams separately and then combine them
2Device complexity
If cool air is directly blown out to users, then the air delivery system is simple, but the output air is not gentle enough and users feel uncomfortable
Solution Approach 1:
The patent introduces non-hot exchange air as an intermediary substance that mixes with hot exchange air to moderate temperature extremes, making the output air gentler and more comfortable for users
Solution Approach 2:
The patent changes the temperature parameter of the output air by mixing hot exchange air with cooler non-hot exchange air, creating a more comfortable temperature range for users
3Device complexity
If the air output direction is not downward, then the housing structure is simple, but the air flow and temperature adjustment in the room is slow
Solution Approach 1:
The patent introduces asymmetric orientation to the air delivery system by inclining the air-duct bodies and mixed air outlet downward, creating directional air flow that improves room air circulation speed
Solution Approach 2:
The patent adds a vertical dimension to the air delivery by inclining structures downward, enabling air to be blown towards the ground and improving overall room air circulation efficiency
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 flow and temperature adjustability by increasing air volume and gentleness, improving user comfort and air distribution, especially when installed at high positions, by blowing mixed air downwards without obstacles, thus improving indoor air uniformity and flowability.
Implementation Method 1
a volute and a centrifugal fan located inside the volute are disposed inside the housing and above the air delivery apparatus
Implementation Method 2
heat exchangers are disposed inside the housing
Data Source
AI summary
A wall-mounted air conditioner indoor unit includes a housing having a front housing and a rear housing, main air intake portions formed on the housing, a mixed air outlet formed on a lower portion of the front housing, a non-hot exchange air inlet formed on the rear housing, and an air delivery apparatus disposed inside the housing. A volute and a centrifugal fan located inside the volute are disposed inside the housing and above the air delivery apparatus. An air output portion of the volute faces the hot exchange air passage, and includes a surrounding portion extending to the air delivery apparatus and surrounding the hot exchange air passages, and air mixed cavities are formed between the surrounding portion and the hot exchange air passages.