Air distribution device and method for ventilating a room
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Solution Overview
Problem
Existing air distribution devices fail to sufficiently cool supply air on warm days, leading to inadequate indoor climate control and limited air conditioning of entire rooms due to restricted airflow patterns.
Innovation Solution
The air distribution device incorporates at least two nozzles above the ceiling panel with longitudinal axes parallel to the ceiling, allowing for a quasi-linear outflow and division of supply air into two partial volume flows, where one flow is cooled or heated by heat exchanger elements and the other is directed along the ceiling for enhanced induction and mixing, reducing drafts and improving ventilation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If supply air flows horizontally along the ceiling panel, then thermal comfort is improved and drafts are reduced, but the air conditioning of the entire room is limited
Solution Approach 1:
The air outlet is divided into two separate outlets: a first air outlet for horizontal air flow along the ceiling panel and a second air outlet for vertical air flow into the room. This segmentation allows each outlet to perform its specialized function, with the first outlet providing thermal comfort and the second outlet ensuring comprehensive room air conditioning.
Solution Approach 2:
The invention adds a vertical dimension to the air flow by introducing the second air outlet that directs air downward into the room. This complements the horizontal air flow from the first outlet, creating a three-dimensional air distribution pattern that enhances overall ventilation effectiveness.
2Speed
If walls of the air outlet are arranged at an acute angle to the air outlet surface, then horizontal outflow along the ceiling is achieved, but the air flow pattern is restricted
Solution Approach 1:
The air outlet is segmented into two separate outlets with different geometries: the first air outlet has walls arranged at an acute angle for horizontal flow, while the second air outlet has a different configuration for vertical flow. This segmentation enables the system to provide both horizontal and vertical air flow patterns.
Solution Approach 2:
The air distribution device is designed to perform multiple functions through its two outlets: it can generate horizontal air flow for thermal comfort and vertical air flow for room penetration. This multi-functionality makes the device adaptable to different ventilation requirements.
3Temperature
If heat exchanger elements are arranged on the ceiling panel, then air cooling is improved, but the air flow path is limited
Solution Approach 1:
The air flow is segmented into two paths: one path flows horizontally along the ceiling panel where it can be cooled by heat exchanger elements, and the other path flows vertically into the room. This segmentation allows the cooling function and ventilation function to operate simultaneously through different flow paths.
Solution Approach 2:
The first air outlet acts as an intermediary that directs air flow along the ceiling panel past the heat exchanger elements, enabling efficient heat transfer. This intermediate horizontal flow path allows the air to be cooled before being distributed into the room through the second outlet.
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 configuration enhances air conditioning by ensuring thorough mixing and distribution of cooled or heated air, reducing drafts and improving thermal comfort while allowing for efficient energy use by utilizing the ceiling as a 'refrigerant store' for cooling purposes.
Implementation Method 1
a first partial volume flow of the supply air leaves the air distribution space via a horizontally arranged air outlet surface of an air outlet formed by a perforated ceiling panel, and flows along an underside of the ceiling panel of the air distribution device into the room to be ventilated
Implementation Method 2
heat exchanger elements being arranged on a top of the ceiling panel facing away from the room to be ventilated
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention relates to an air distribution device (1) comprising a housing (2) which defines an air distribution chamber (7) for at least indirect connection with an air supply system, wherein the housing (2) has an air inlet cross-section (5) through which supply air (6) can be introduced into the air distribution chamber (7), wherein the housing (2) has an air outlet (8) with a horizontally arranged air outlet surface (9), wherein walls (13) of the air outlet (8) are arranged at an acute angle (α) between 5° and 22° to the air outlet surface (9), and the air outlet surface (9) is formed by a perforated ceiling panel (10), through which a first partial volume flow of the supply air (6) leaves the air outlet (8) and flows along a bottom surface (42) of the ceiling panel (10) into a room (12) to be ventilated, wherein on a surface of the room (12) to be ventilated Heat exchanger elements (28) are arranged on the remote upper surface (24) of the ceiling panel (10).To provide a device for further optimizing the airflow behavior in a room (12) so that the air conditioning of the entire room (12) can be improved, the invention proposes that at least two nozzles (15) be arranged on the housing (2) above the top surface (24) of the ceiling panel (10) such that a longitudinal axis (20) of the nozzles (15) runs parallel to a longitudinal axis (22) of the ceiling panel (10) and parallel to a surface (25) of the ceiling panel (10), and that the respective nozzles (15) are located on both sides of an axis (18) of the housing (2) which runs parallel to a transverse axis (19) of the ceiling panel (10). Furthermore, the present application relates to an associated method.