Ceiling Induction Air Unit With Laminar Mixed-Air Heat Radiation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional heating and cooling apparatuses, such as multi-air conditioners and fan coil units, suffer from high wind velocity causing drafts, temperature unevenness, and low efficiency, especially in poorly insulated spaces with high thermal loads or significant air flow, and require additional measures for dew condensation, increasing costs.
Innovation Solution
A heating and cooling unit that mixes feed air with circulated air from the room and uses a heat storage radiation member with flow dividing fins and elliptical pipes to radiate heat in a laminar flow manner, reducing pressure loss and enhancing heat transfer, while eliminating the need for separate dew condensation measures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional heating and cooling apparatuses (multi-air conditioners or fan coil units) are used to blow cold or warm air directly to the room, then cooling or heating effect is achieved, but the wind velocity is too high causing drafts and temperature unevenness
Solution Approach 1:
The patent divides the air flow into multiple streams using partition walls inside the casing. Multiple blowers generate separate air flows that are directed through different paths and mixed before being supplied to the room. This segmentation reduces the velocity of each individual stream and creates more uniform temperature distribution when the streams mix and combine.
Solution Approach 2:
The patent employs a mixed air blower positioned within or alongside the main air flow path. The mixed air blower draws in room air and mixes it with the conditioned air from the heat exchanger, creating a composite air stream. This nested arrangement allows the system to incorporate secondary air handling functions within the primary air conditioning structure.
2Power
If radiation cooling or heating is used in ceiling panels, then low heat or high heat emission is achieved, but the air conditioning efficiency is low and the range of use is limited
Solution Approach 1:
The patent combines two air conditioning approaches into a single system: conventional forced air conditioning (through the heat exchanger and main blower) and radiation cooling/heating (through the heat storage radiation member). The heat storage radiation member absorbs or releases heat to or from the room, while the forced air system provides rapid temperature control. This merging allows the system to achieve high power efficiency while maintaining versatility across different application scenarios.
Solution Approach 2:
The heat storage radiation member serves multiple functions: it acts as a thermal energy storage device, a radiation heat exchanger, and a supplemental heating or cooling source. The system can operate in different modes (forced air only, radiation only, or both together) depending on the thermal load and environmental conditions, making it universally applicable to various spaces including those with poor thermal insulation or high thermal loads.
3Temperature
If radiation cooling or heating is used, then heat emission is achieved, but dew condensation occurs requiring additional measures that increase cost
Solution Approach 1:
The patent introduces mixed air as an intermediary between the heat storage radiation member and the room environment. The mixed air, which has been tempered by the forced air system, prevents the radiation member surface temperature from dropping too low, thereby preventing dew condensation. The mixed air stream acts as a thermal buffer that maintains the radiation member above the dew point while still allowing effective heat transfer to the room.
4Temperature
If only heat emission from radiation panel is employed, then radiation heating or cooling is achieved, but the space unsuitable for air conditioning increases
Solution Approach 1:
The patent merges forced air conditioning with radiation heating/cooling in a single integrated system. The heat exchanger and blower provide forced air conditioning capability, while the heat storage radiation member provides radiation heating or cooling. This combination allows the system to effectively condition spaces that would be unsuitable for radiation-only systems, such as rooms with poor thermal insulation, high thermal loads, or significant air infiltration.
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 achieves high efficiency and power, reduces unsuitable spaces for air conditioning, prevents drafts and temperature unevenness, expands usage range, and integrates heat transfer for efficient and uniform heating and cooling without the need for additional dew condensation equipment.
Implementation Method 1
a heat storage radiation member, which is attached in the mixer case in a thermally-conductive manner, for obtaining heat from the mixed air and radiating the heat to the room inside
Implementation Method 2
a heat storage radiation member, which is attached in the mixer case in a thermally-conductive manner, for obtaining heat from the mixed air and radiating the heat to the room inside
Implementation Method 3
The heat storage radiation member comprises a plurality of juxtaposed flow dividing fins for dividing the flow of mixed air to be supplied to the room inside and letting the mixed air through
Data Source
AI summary
In an induction emission air conditioning apparatus installed in a ceiling, it is provided within a casing with a heat exchanger through which a feed air introduced from an outdoor side passes, a fan passing the feed air through the air conditioning heat exchanger, and a heating and cooling unit 1 for blowing a mixed air obtained by inducing and suctioning the air in the room inside by using the feed air passing through the heat exchanger so as to mix with the feed air, into the room inside in a laminar manner, and emitting the heat of the mixed air to the room inside, integrally.