Wall-Mounted AC Indoor Unit With Downward Mixed-Air Outlet
Find Innovative SolutionsGenerate Solutions
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 direct air downwards effectively for improved room air flow and temperature adjustment.
Innovation Solution
A wall-mounted air conditioner indoor unit design featuring a flow air apparatus with sequentially arranged airduct bodies, a centrifugal fan, and a volute that directs mixed air downwards, incorporating a non-hot exchange air inlet and a mixed air outlet with an inclined configuration to increase air volume and circulation speed, and a surrounding portion to buffer and uniformly emit hot exchange air.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If all exhausted air is hot exchange air, then the air volume is relatively small, but the air circulation speed is slow
Solution Approach 1:
The patent combines hot exchange air and non-hot exchange air into a mixed air outlet, merging two separate air streams to increase total air volume while maintaining circulation efficiency through the coordinated operation of the centrifugal fan and volute structure
Solution Approach 2:
The mixed air outlet serves multiple functions: it exhausts hot exchange air, introduces non-hot exchange air, and directs mixed air downwards. This multi-functional design increases air volume handling capability while maintaining effective air circulation throughout the room
2Productivity
If hot exchange air is directly blown out, then the air volume is concentrated, but the user feels uncomfortable
Solution Approach 1:
The patent introduces non-hot exchange air as an intermediary substance that mixes with hot exchange air in the mixed air outlet. This intermediary air reduces the temperature and intensity of the exhaust air, making it more comfortable for users while maintaining effective air exchange efficiency
Solution Approach 2:
The mixed air outlet changes the parameters of the exhaust air by combining hot exchange air with non-hot exchange air, resulting in mixed air with modified temperature and flow characteristics that are gentler and more comfortable for users
3Device complexity
If the air exhausted direction is upward, then the air outlet structure is simple, but the air flow and temperature adjustment in the room is slow
Solution Approach 1:
The patent directs the mixed air outlet downwards, changing the exhaust direction from the conventional upward orientation. This dimensional change in air flow direction leverages gravity and room geometry to improve air circulation speed and temperature distribution efficiency without significantly increasing structural complexity
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 intake volume, speeds up indoor air flow, and makes the air more gentle, improving user comfort and air flowability and temperature adjustability, even when installed at a high position, by directing mixed air downwards without obstacles.
Implementation Method 1
a centrifugal fan and a volute provided with a first air intake portion, a second air intake portion, and an air exhaust portion are disposed inside the housing and above the flow air apparatus
Implementation Method 2
heat exchangers are disposed inside the housing
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, where 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 size of an upper portion of the hot exchange air passage is greater than a size of a lower portion of the hot exchange air passage, thereby forming a passage structure that is wide at the upper portion and narrow at the lower portion, 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.